СОСТАВ ПОКРОВНОГО ГАЗА И СПОСОБЫ ЕГО ИСПОЛЬЗОВАНИЯ

Изобретение относится к области металлургии, в частности к составам, пригодным в качестве покровных газов для защиты расплавленного магния/сплавов магния. Состав покровного газа для защиты расплавленного магния/сплава магния включает в себя фторсодержащий ингибитор в количестве менее 1 об.% и газ-носитель. Каждый компонент состава имеет потенциал глобального потепления (GWP) (сравниваемый с абсолютным GWP диоксида углерода при периоде распада 100 лет) менее 5000, обеспечивается высокоэффективная защита расплавленного магния/сплавов магния. 3 с. и ф-лы, 26 з.п. ф-лы, 1 табл.

СПОСОБ ТЕМПЕРАТУРНОЙ ОБРАБОТКИ СПЛАВОВ МАГНИЯ

Изобретение относится к термообработке магниевых сплавов, которые могут быть упрочнены дисперсионным твердением. Низкотемпературная термообработка сплава включает следующие стадии: (а) обеспечение способного к упрочнению при старении сплава на основе магния, обработанного гомогенизационным отжигом и закаленного, и (b) осуществление низкотемпературного старения указанного сплава при температуре ниже 100°С в течение времени, достаточного для развития улучшенной ответной реакции на старение. Состаренный сплав содержит дисперсные выделения типа зон Гинье-Престона (ГП), в том числе плоские ГП1 и призматические ГП2 дисперсные выделения, перпендикулярные к основной плоскости магния. Обеспечивается образование мелкодисперсных выделений высокой численной плотности и увеличение твердости и пластичности сплава. 2 н. и 16 з.п. ф-лы, 1 табл., 11 ил.

МАГНИЕВО-БЕРИЛЛИЕВЫЕ СПЛАВЫ, ОБРАБОТАННЫЕ В ПОЛУТВЕРДОМ СОСТОЯНИИ

Изобретение относится к сплавам из бериллия и магния с содержанием 1 - 99 мас.% бериллия без интерметаллического соединения МgВе13. Способ получения сплава исключает перемешивание жидких сплавов и ввод скалывающих сил за счет использования распыленных или измельченных частиц бериллия в смеси с твердыми частицами или жидким магнием. Техническим результатом использования изобретения является получение магниевых сплавов, характеризующихся низкой плотностью, модуль упругости которых превышает модуль упругости магния на 100-400%. Способ получения этих сплавов не требует нагрева до сверхвысоких температур. 3 с. и 16 з.п.ф-лы, 3 табл., 3 ил.

Способ приготовления и подачи защитной газовой смеси для плавки магниевых сплавов

Изобретение относится к области металлургии, конкретно к плавке и литью сплавов на основе магния, и может быть использовано для получения фасонных отливок, например, корпусов различных агрегатов, используемых в аэрокосмической отрасли и в других отраслях промышленности. Способ приготовления и подачи защитной газовой смеси газа-носителя, инертного или малоактивного по отношению к расплаву, и газообразного перфторэтилизопропилкетона при плавке магниевых сплавов включает получение газовой смеси, содержащей перфторэтилизопропилкетон в количестве 0,1-10% от объема подаваемой газовой смеси, непосредственно в подводящей трубке, подающей газовую смесь к плавильному тиглю, посредством смешения газа-носителя и газообразного перфторэтилизопропилкетона, получаемого испарением его жидкой фазы, подводимой самотеком капельным способом через капиллярный ввод непосредственно в подводящую трубку, за счет конвективной передачи тепла от металла в тигле. Изобретение направлено на создание способа приготовления ...

Способ модифицирования магниевых сплавов

Изобретение относится к области металлургии легких сплавов и может быть использовано при производстве магниевого сплава системы магний-алюминий-цинк-марганец, содержащего примесь циркония. В способе перед модифицированием при температуре 770-780°C в расплав вводят кальций и железо в количестве 0,05-0,15% и 0,005-0,015% соответственно от массы расплава с интервалом введения железа не менее 10 мин, после выдержки расплава в течение 10-20 мин при температуре 720-750°C осуществляют модифицирование магнезитом в количестве 0,3-0,4% от веса расплава, при этом железо вводят в состав железосодержащего сплава при соотношении железа к содержащейся в сплаве примеси циркония 0,25-2,5. Изобретение позволяет устранить негативное влияние примеси циркония, обеспечивает возможность проведения модифицирования сплава для повышения качества литья за счет уменьшения содержания в сплаве водорода, тем самым снижая возможность образования микрорыхлостей, а также позволяет получить мелкозернистую структуру сплава ...

ПОРОШКОВАЯ СМЕСЬ ДЛЯ ОСУЩЕСТВЛЕНИЯ ЭКЗОТЕРМИЧЕСКОЙ РЕАКЦИИ

... 1. Порошковая смесь для осуществления экзотермической реакции, включающая порошок сплава магния с металлическим катализатором и регулятор скорости реакции смеси с водным раствором электролита, отличающаяся тем, что в качестве металлического катализатора используется железо и/или кремний, а в качестве регулятора скорости реакции смесь содержит фракцию порошка сплава магния относительно низкой дисперсности при следующих соотношениях компонентов, мас.%: порошок сплава магния с размерами частиц 200-500 мкм 65-90 порошок сплава магния с размерами частиц 501-800 мкм 10-35 2. Порошковая смесь по п.1, отличающаяся тем, что она дополнительно содержит фракцию порошка сплава магния относительно высокой дисперсности при следующих соотношениях компонентов, мас.%: порошок сплава магния с размерами частиц 200-500 мкм 65-85 порошок сплава магния с размерами частиц 501-800 мкм 10-25 порошок сплава магния с размерами частиц 100-199 мкм 5-15 3. Порошковая смесь по пп.1 и 2, отличающаяся тем, что в сплаве ...

ЛИТЕЙНЫЕ МАГНИЕВЫЕ СПЛАВЫ

... 1. Литейный сплав на основе магния, который включает в себя по меньшей мере, 85 мас.% магния; от 2 до 4,5 мас.% неодима; от 0,2 до 7,0%, по меньшей мере, одного редкоземельного металла с атомным номером от 62 до 71; до 1,3 мас.% цинка; и от 0,2 до 1,0 мас.% циркония; необязательно с одним или несколькими из до 0,4 мас.% других редкоземельных элементов; до 1 мас.% кальция; до 0,1 мас.% элемента, ингибирующего окисление, отличающегося от кальция; до 0,4 мас.% гафния и/или титана; до 0,5 мас.% марганца; не больше, чем 0,001 мас.% стронция; не больше, чем 0,05 мас.% серебра; не больше, чем 0,1 мас.% алюминия; не больше, чем 0,01 мас.% железа; и меньше, чем 0,5 мас.% иттрия; остаток приходится на случайные примеси. 2. Сплав по п.1, который содержит от 2,5 до 3,5 мас.% неодима. 3. Сплав по п.1, который содержит приблизительно 2,8 мас.% неодима. 4. Сплав по п.1, который содержит от 1,0 до 2,7 мас.% гадолиния. 5. Сплав по п.1, который содержит приблизительно 1,5 мас.% гадолиния. 6. Сплав по п.1 ...

Hitzebeständige Magnesiumlegierung

HERSTELLUNGSVERFAHREN FÜR WASSERSTOFFSPEICHERNDES METALLPULVER

Verfahren zur Herstellung von vergueteten Gussteilen aus einer Magnesium-Aluminium-Zink-Legierung

VERBUNDWERKSTOFF AUF MAGNESIUMBASIS UND HERSTELLUNGSVERFAHREN DAFÜR

VERBUNDWERKSTOFF AUF MAGNESIUMBASIS UND HERSTELLUNGSVERFAHREN DAFÜR

Hochfeste nicht brennbare Magnesiumlegierung

Hochfeste nicht brennbare Magnesiumlegierung, hergestellt durch Zugeben zumindest eines zusätzlichen Additivs, ausgewählt aus Kohlenstoff (C), Molybdän (Mo), Niob (Nb), Silizium (Si), Wolfram (W), Aluminiumoxid (Al2O3), Magnesiumsilicid (Mg2Si) und Siliziumkarbid (SiC) zu einer nicht brennbaren Magnesiumlegierung, hergestellt durch Zugabe von 0,5 bis 5,0 Massen-% von Kalzium zu einer Magnesiumlegierung.

Aluminiumfreie Magnesiumlegierung

MAGNESIUM UND BERYLLIUM ENTHALTENDE SUPRALEITENDE INTERMETALLISCHE VERBINDUNG UND DIE INTERMETALLISCHE VERBINDUNG ENTHALTENDE SUPRALEITENDE LEGIERUNG UND VERFAHREN ZU IHRER HERSTELLUNG

Improvements in making alloy extruded forms by powder metallurgy

Alloy forms are made by extruding a heated mixture of silver powder and magnesium base alloy powder which contains 0.1 per cent-0.8 per cent by weight of zirconium, preferably 0.3 per cent and may also contain up to 2 per cent cerium or up to 8 per cent zinc or up to 1 per cent calcium or combinations of these other ingredients. The silver comprises 0.1 per cent-6.0 per cent by weight of the mixture.

Improvements in die-expressed articles of a magnesium-base alloy

... 662,312. Powder metallurgy; extruding. DOW CHEMICAL CO. Nov. 7, 1949 [Nov. 12, 1948], No. 28508/49. Class 83 (iv). [Also in Group II] A method of making an extruded article of a magnesium-base alloy (see Group II) comprises atomizing the alloy into microinhomogeneous particles of from 0.001 to 0.02 inch in diameter, heating to a temperature within the range of plastic deformation of the alloy and applying pressure to compact and extrude the alloy, the reduction in cross-section being at least 80 per cent. Molten metal is atomized (see Group II), fed into a heated container 20 and extruded through a die 21 by a hydraulic plunger 25. Before extruding, the die opening 22 is temporarily plugged with a piece of magnesium alloy 29. The container and die are maintained at a temperature within the plastic deformation range of the alloy and preferably about 600‹ to 800‹ F. The charge should be compressed and extruded before its microinhomogeneous structure is adversely affected by the heating. Suitable ...

Improvements in making alloy extruded forms by powder metallurgy

A method of making extruded forms of an alloy containing magnesium, zirconium and aluminium comprises mixing a powdered p magnesium base alloy containing zirconium with powdered aluminium or an aluminium-containing alloy and then extruding the mixed powder in heated condition. The aluminium-containing alloy is preferably a magnesium base alloy containing at least 0.5 per cent aluminium and if desired containing also zinc or manganese or both. The zirconium-containing magnesium base alloy may also contain cerium, zinc, calcium or silver. To this mixture of alloy powders may also be added unalloyed magnesium-soluble metal in powder form selected from manganese, cadmium, lead, tin, zinc. The Specification contains a number of tables setting out the detailed composition of various powder mixtures on which tests were carried out.

Improvements in or relating to magnesium alloys and method of making same

Alloys containing magnesium, copper and silicon are produced by alloying copper and silicon to form a copper silicon alloy and alloying this alloy with magnesium or a copper-magnesium alloy, the copper-silicon alloy being preferably added to molten copper-magnesium alloy. The copper-silicon and copper-magnesium alloys should have melting-points substantially lower than the melting-points of copper and magnesium respectively, e.g. by use of the eutectic binary alloys. The ternary alloy produced may then be alloyed with ferro-silicon or with ferro-silicon containing a small amount of copper to form an alloy for addition to molten iron or steel. A part or all of the silicon used to form the original copper-silicon alloy may be replaced by ferro-silicon, the resulting copper-magnesium-silicon alloy containing a substantial amount but less than 20 per cent of iron. In this case the copper-silicon-iron alloy should have a melting-point substantially lower than that of the ferro-silicon used.

Magnesium-base alloy

A workable magnesium alloy has the following percentage composition:- .Ca.0.01 - 0.8 .Zn.0.05 - 0.95 .Mn.up to 1.5 .Zr.up to 0.8 .Mg.the remainder and is characterised in that Ca times (Zn-0.2) does not exceed 0.1 when Zr is absent or that Ca times (Zn-0.35) does not exceed 0.1 when Zr is present. The alloy may be hot-rolled to sheet form at 370-480 DEG C. followed by annealing for 1 hour at 345-510 DEG C. Cold-rolling follows, preceded if desired by a solution treatment at 480-510 DEG C. Instead of cold-rolling the sheet may be warm-rolled with an input temperature to the rolls of 370-510 DEG C. and an exit temperature of 150-315 DEG C. The sheet may then be reheated to 150-370 DEG C. for 1 hour.

Corrodible downhole article

Wrought magnesium-base alloy

A weldable wrought magnesium base alloy has a composition within the range .Al.0.1 -1.75% .Zn.0.05-0.6% .Mn.0.2 -1.0% .Ca.0.05-0.6% .Mg.the balance, the proportion of Ca not exceeding 1.4 minus twice the proportion of Zn. Reference is made to extrusion of billets of the alloy to strip form and to ageing the extrusions for 24 hours at 175 DEG C. Slabs of the alloy may be rolled to sheet form in a number of passes at about 455 DEG C. The resulting sheet may be annealed for one hour at 480 DEG C., quenched in water, cold rolled close to the cracking point and heat treated for one hour at 150 DEG C. and for one hour at 370 DEG C. Hot rolled specimens were heat treated for one hour at 510 DEG C., quenched in water and aged for 24 hours at 175 DEG C.

Application of aluminium-zirconium-titanium-carbon intermediate alloy in deformation process of magnesium and magnesium alloys

An application of an aluminum-zirconium-titanium-carbon (Al-Zr-Ti-C) intermediate alloy in the deformation process of magnesium and magnesium alloys. The chemical composition of said Al-Zr-Ti-C intermediate alloy in weight percentage is: 0.01% to 10% of Zr, 0.01% to 10% of Ti, 0.01% to 0.3% of C, and Al accounting for the rest; said deformation process is a plastic molding method; said application is the refinement of magnesium crystal grains or magnesium alloy crystal grains. Also provided is an application method of the Al-Zr-Ti-C intermediate alloy in the continuous casting and rolling of magnesium and magnesium alloy. The aluminum-zirconium-titanium-carbon (Al-Zr-Ti-C) intermediate alloy has a strong nucleation capability and crystal grain refinement effects in magnesium and magnesium alloys, and enables the continuous, scalable production of deformed material of magnesium and magnesium alloy.

Corrodible downhole article

Improvements in or relating to magnesium base alloys

In a method for making a magnesium base alloy containing at least 80% Mg at least 0.25% Zn and at least one of the elements rare earth metals or thorium the alloy is heated in hydrogen (e.g. until the alloy contains at least 50 c.c. hydrogen per 100 gms of alloy). Alloys disclosed contain:- .R.E. metals.0.2 - 6.0% .Zn.0.25-10% .Zr.0 - 1% .Mu.0 - 2.5% and optionally, one or more of the following .Ag.up to.8.0% .Cd.up to.5.0% .Li.up to.6.0% .Ca.up to.1.0% .Ga.up to.2.0% .In.up to.2.0% .Tl.up to.5.0% .Pb.up to.1.0% .Cu.up to.0.25% .Be.up to.0.05% .Bi.up to.1.0% .Th.up to.3.0% .Fe.up to.0.1% Mg at least 80% being the balance ...

Improvements in and relating to magnesium alloys

... 513,627. Alloys; rolling. MAGNESIUM ELEKTRON, Ltd. (I. G. Farbenindustrie Akt.-Ges.). Jan. 14, 1938, No. 1341. [Class 82 (i)] [Also in Group XXII] Magnesium alloys, suitable for making sheets, forgings, and extruded articles, contain 0.1-2.5 per cent. of manganese and 0.1-0.8 per cent. of cerium or other rare earth elements or mixtures thereof, with or without a total of not more than 1.5 per cent. of other constituents such as zinc and aluminium. Sheets of the alloy may be made by rolling to about 5 mm. thickness at about 300‹C. followed by cold rolling to 1 or 2 mm. Other alloys contain 0.1-2.5 per cent. of manganese, 0.1-1.5 per cent. of cerium, and 0.1-1.0 per cent. of zinc and/or 0.1-0.5 per cent. of aluminium.

Improved magnesium alloys

An alloy suitable for canning the fuel elements of nuclear reactors, contains in percentage by weight either Zr 0.6, Mn 0.1, Mg balance, or Zr 0.7, Mn 0.27, Mg balance. Specification 851,871 is referred to.

Improvements in or relating to magnesium base alloys

The corrosion resistance of Mg base alloys containing 0.2 to 10 per cent Zr, 0.25 to 6 per cent Th, (with or without Rare Earth metals not exceeding 5 per cent, the Th and Rare Earth metals together not exceeding 6 per cent), is increased by the addition to the molten alloy of such quantity of In as will produce 0.01 to 2.0 per cent in the finished alloy. In addition to these specified metals the alloy may also contain Zn to 5 per cent, Mn to 0.5 per cent, Be to 0.002 per cent. Ca to 0.2 per cent, Hg to 3 per cent, Pb to 1 per cent, Tl to 1 per cent, Li to 3 per cent, Te to 0.1 per cent, Ag to 1 per cent. Specifications 511,137, 637,040, 733,221 and 759,411 are referred to.

Magnesium alloy powder metal compact

Aluminium alloy powder metal compact

Magnesium alloy powder metal compact

Aluminium alloy powder metal compact

Aluminium alloy powder metal compact

Magnesium alloy powder metal compact

VERFAHREN ZUR HERSTELLUNG VON ZUNDSTEINEN

Magnesiumbasislegierung und Verfahren zur Herstellung derselben

Die Erfindung betrifft eine Magnesiumbasislegierung. Um eine Magnesiumbasislegierung zu erreichen, welche sowohl eine hohe Festigkeit als auch eine hohe Dehnbarkeit aufweist, ist vorgesehen, dass die Magnesiumbasislegierung aufweist (in Gew.-%): in einem ersten Anteil Magnesium, in einem zweiten Anteil mehr als 10,0 % Aluminium, einen dritten Anteil eines oder mehrerer Elemente, welcher mit Aluminium zumindest eine erste Phase bildet, optional mehr als 0,0 bis 1,0 % Zink, Rest Magnesium und herstellungsbedingte Verunreinigungen, wobei die Magnesiumbasislegierung eine Mg17Al12-Phase enthält und eine Bildungstemperatur der ersten Phase größer ist als eine Bildungstemperatur der Mg17Al12-Phase. Weiter betrifft die Erfindung ein Verfahren zur Herstellung der Magnesiumbasislegierung.

A method for enhancing a corrosion resistance of a magnesium alloy with a formed component against galvanic corrosion and corrosion-resistant member thus obtained

Die Erfindung betrifft ein Verfahren zur Erhöhung einer Korrosionsbeständigkeit eines mit einer Magnesiumbasislegierung gebildeten Bauteiles gegen galvanische Korrosion, insbesondere mikrogalvanische Korrosion. Eine Erhöhung einer Korrosionsbeständigkeit gegen galvanische Korrosion wird erfindungsgemäß auf einfache Weise dadurch erreicht, dass eine eine vorbestimmte Dicke aufweisende Oberflächenschicht des Bauteiles, welche mit der Magnesiumbasislegierung gebildet ist, erhitzt wird, um die Oberflächenschicht mit einer homogenisierten Mischkristallphase auszubilden, wonach die Oberflächenschicht abgekühlt wird, sodass die Oberflächenschicht mit einer übersättigten Mischkristallphase gebildet wird. Weiter betrifft die Erfindung ein korrosionsbeständiges Bauteil, welches mit einem solchen Verfahren erhältlich ist.

MAGNESIUM ALLOYS FOR HYDROGEN STORAGE

METAL MAGNESIUM CONNECTIONS, YOUR PRODUCTION AS WELL AS YOUR APPLICATION TO THE PRODUCTION OF FINE METALLIC POWDER, METAL CRAVING POWDER AND INTER+METALLIC CONNECTIONS

Vergütbare magnesium alloy with contents of aluminum and bismuth.

PROCEDURE FOR MANUFACTURING A MAGNESIUM ALLOY BY EXTRUSION AND USE OF THE EXTRUDED SEMI-FINISHED MATERIAL AND CONSTRUCTION UNITS

SCREEN GAS

Alloy for pyrotechnic purposes

Magnesium or magnesium alloy having high formability at room temperature and manufacturing method thereof

The present invention provides magnesium or magnesium alloys having high formability at room temperature, the magnesium or magnesium alloys having a grain size ≤ 2 microns. The present invention also provides a method for manufacturing the magnesium or magnesium alloys having high formability at room temperature. The magnesium or magnesium alloys having high formability at room temperature are prepared by simple processing means. The present invention overcomes a problem of poor formability at room temperature.

Hydrogen storage alloys having a long cycle life

Method of heat treating magnesium alloys

Magnesium-based alloy for wrought applications

An improved magnesium-based alloy for wrought applications is disclosed, including a method of fabricating alloy sheet from said alloy. The improved magnesium-based alloy consists of: 0.5 to 4.0% by weight zinc; 0.02 to 0.70% by weight a rare earth element, or mixture of the same including gadolinium; and incidental impurities. The rare earth element in some embodiments may be yttrium and/or gadolinium. In some embodiments the magnesium-based alloy may also consist of a grain refiner and in some embodiments the grain refiner may be zirconium. In combination, the inclusion of zinc and a rare earth element, into the magnesium alloy may have enhanced capacity for rolling workability, deep drawing at low temperatures and stretch formability at room temperature. The improved alloy may also exhibit increased tensile strength and formability while evincing a reduced tendency for tearing during preparation.

Biodegradable implant and method for manufacturing same

The present invention relates to a biodegradable implant including magnesium, and to a method for manufacturing same, wherein the magnesium includes manganese (Mn) as an impurity; and one selected from the group consisting of iron (Fe), nickel (Ni), and a mixture thereof, the content of the impurity is more than 0 and 1 or less weight parts relative to 100 weight parts of the magnesium, and {the one selected from the group consisting of iron (Fe), nickel (Ni), and a mixture thereof}/manganese (Mn) = more than 0 and less than 5.

Method of heat treating magnesium alloys

Medical instruments and devices and parts thereof using shape memory alloys

MAGNESIUM CAPSULES

METHOD OF HEAT TREATING MAGNESIUM ALLOYS

A method for the low temperature heat treatment of an age-hardenable magn esium based alloy, including following steps: (a) providing a solution heat- treated and quenched age-hardenable magnesium based alloy; and (b) subjectin g said alloy to low temperature ageing below 120 °C for a period of time suf ficient to develop an enhanced ageing response.

MAGNESIUM-LITHIUM ALLOY

The invention disclosed is a magnesium-based alloy for use in electrical batteries. The alloys contain 6-13%/w of lithium and exhibits enhances electrochemical properties. Small amounts of aluminum may be added to the alloys to enhance corrosion resistance.

MAGNESIUM ALLOYS

Magnesium alloys having favourable tensile properties contain silver, copper and neodymium. The alloys are subjected to a solution heat treatment followed by ageing to give optimum properties.

METHOD FOR THE ECONOMIC MANUFACTURE OF LIGHT COMPONENTS

The present invention relates to a method for the economic production of light structural components with high flexibility in the geometry attainable. It also relates to the material required for the manufacturing of those parts. The method of the present invention allows a very fast manufacturing of the parts. The method of the present invention also allows the economic manufacturing of components with intricate internal geometries (such as for example cooling or heating circuits).

COPPER-CONTAINING, HIGH-TOUGHNESS AND RAPIDLY DEGRADABLE MAGNESIUM ALLOY, PREPARATION METHOD THEREFOR AND USE THEREOF

Provided are a copper-containing, high-toughness and rapidly degradable magnesium alloy, a preparation method therefor and the use thereof, wherein same relate to the field of materials for oil and gas exploitation. When the magnesium alloy is in an as-cast state, an extrusion state or an aging state, a strengthening phase thereof mainly comprises an Mg12CuRE-type long period phase and an Mg5RE phase and an Mg2Cu phase, the Mg12CuRE-type long period phase has a volume fraction of 3-60%, the Mg5RE phase has a volume fraction of 0.5-20%, and the Mg2Cu phase has a volume fraction of 0.5-15%, wherein RE is a rare-earth metal element. A fracturing ball, made of the magnesium alloy, can alleviate the problem that a fracturing ball has a low strength and is difficult to degrade in the prior art, thereby obtaining a copper-containing, high-toughness and rapidly degradable magnesium alloy, wherein the corrosion rate thereof can reach up to 3000 mm/a, and at the same time, the tensile strength thereof ...

HIGH CONDUCTIVITY MAGNESIUM ALLOY

A castable, moldable, or extrudable magnesium-based alloy that includes one or more insoluble additives. The insoluble additives can be used to enhance the mechanical properties of the structure, such as ductility and/or tensile strength. The final structure can be enhanced by heat treatment, as well as deformation processing such as extrusion, forging, or rolling, to further improve the strength of the final structure as compared to the non-enhanced structure. The magnesium-based composite has improved thermal and mechanical properties by the modification of grain boundary properties through the addition of insoluble nanoparticles to the magnesium alloys. The magnesium-based composite can have a thermal conductivity that is greater than 180 W/m-K, and/or ductility exceeding 15-20% elongation to failure.

PROCESS FOR PREPARING COMPOSITES COMPRISING CARBON AND MAGNESIUM FOR HYDROGEN STORAGE

The invention relates to a process for preparing carbon and magnesium com prising composites, comprising: a) contacting a carbon material comprising p ores of which at least 30%, based on the total number of pores, have a pore diameter in the range 0.1 to 10x10-9 m with a molten metallic magnesium or m agnesium alloy to obtain a intermediate composite; and b) cooling the interm ediate composite to obtain a carbon and magnesium comprising composite. The invention further provides a carbon and magnesium comprising composite obtai nable by the process of the invention, the use of a carbon and magnesium com prising composite obtainable by the process and a hydrogen storage system. ...

MG-BASED ALLOY FOR HYDROGEN STORAGE

A range of alloys of Mg and at least one of Cu, Si, Ni and Na alloys that is particularly suitable for hydrogen storage applications. The alloys of the invention are formed into binary and ternary systems. The alloys are essentially hypoeutectic with respect to their Cu and Ni contents, where one or both of these elements are present, but range from hypoeutectic through to hypereutectic with respect to their Si content when that element is also present. The terms hypoeutectic and hypereutectic do not apply to Na if it is added to the alloy. The alloy compositions disclosed provide high performance alloys with regard to their hydrogen storage and kinetic characteristics. They are also able to be formed using conventional casting techniques which are far cheaper and more amenable to commercial use than the alternative ball-milling and rapid solidification techniques which are much more expensive and complex. Each of the individual binary Mg-E systems, where E = Cu, Ni or Si, forms a eutectic ...

METHODS OF OFF-LINE HEAT TREATMENT OF NON-FERROUS ALLOY FEEDSTOCK

The present invention, in some embodiments, is a method of forming an O temper or T temper product that includes obtaining a coil of a non-ferrous alloy strip as feedstock; uncoiling the coil of the feedstock; heating the feedstock to a temperature between a recrystallization temperature of the non-ferrous alloy and 10 degrees Fahrenheit below a solidus temperature of the non-ferrous alloy; and quenching the feedstock to form a heat-treated product having am O temper or T temper. The non-ferrous alloy strip used in the method excludes aluminum alloys having 0.4 weight percent silicon, less than 0.2 weight percent iron, 0.35 to 0.40 weight percent copper, 0.9 weight percent manganese, and 1 weight percent magnesium.

PROCESS OF PRODUCING MG2SI-CONTAINING ALLOYS

In a fusion-metallurgical process of producing fine-grained hereogeneous, ductile alloys which contain Mg2Si, the grain size of the Ng2Si crystallites formed by primary solidification is kept below 30 .mu.m in that the molten alloy is doped with 0.05 to 2.00% by weight phosphorus.

High Strength Magnesium-Based Alloys

NANOCRYSTALLINE MG-BASED MATERIALS AND USE THEREOF FOR THE TRANSPORTATION AND STORAGE OF HYDROGEN

Disclosed is a very light-weight, Mg-based material which has the ability to reversibly store hydrogen with very good kinetics. This material is of the formula (Mg1-x A x) D y wherein A is an element selected from the group consisting of Li, Ca, Ti, V, Cr, Mn, Fe, Co, Ni, Cu, Zn, Al, Y, Zr, Nb, Mo, In, Sn, O, Si, B, C and F; D is a metal selected from the group consisting of Fe, Co, Ni, Ru, Rh, Pd, Ir and Pt (preferably Pd); x is a number ranging from 0 to 0.3; and y is a number ranging from 0 to 0.15. This material is in the form of a powder of particles of the formula Mg1-x A x as defined hereinabove, having an average size ranging from 0.1 to 100 .mu.m, each particle consisting of nanocrystalline grains having an average size of 3 to 100 nm or having a nan o- layered structure with a layer spacing of 3 to 100 nm. Some of these particles have clusters of metal D attached thereto, with an averag e size ranging from 2 to 200 nm. Also disclosed are a process for preparing this material which ...

Magnesium alloys-and fibre material for metal ceramics

The binary Mg base alloy for motor or aircraft components, reactors, catalysts, filler metal in welding, dental applications, cutting tools, gas turbines blades, filters etc. is composed of 5-97 wt.% pref. 5-65 wt.% particles of a bcc AB type phase with CsCl structure and lattice const. 2.60-3.20A in which A is Ni,Al or Fe or combination of these, and B is Ti, Al and Be or combination of these. The second phase which consists of Me or Mg-Li alloy contg. up to 55 wt.% Li and 3 wt.% of elements of CsCl type in solid solution, is hexagonal or also bcc and has a lower m.p. than the CsCl type phase. The alloy is obtained by either powder metallurgy or melting and casting, and is fabricated by rolling etc. and may be strengthened by incorporation of fibres or whiskers, or is impregnated with other materials, and may be provided with a coating. The MG-rich phase may be oxidised to MgO or complex oxides to provide a metal ceramic.

Metallsaite für Musikinstrumente.

Verfahren zur Veredelung von Magnesiumlegierungen, die zwischen 80 und 97% Magnesium enthalten.

Zur Herstellung von Magnesiumlegierungen geeignete Legierung.

Durch Knetverarbeitung erzeugter Gegenstand aus Magnesiumlegierung.

Zur Herstellung von Magnesiumlegierungen geeignete Legierung.

Magnesiumlegierung.

Verfahren zur Herstellung von Magnesium und Aluminium enthaltenden Legierungen.

Hochprozentige Magnesiumlegierung.

Verfahren zur Vergütung von Magnesiumlegierungen.

Magnesiumlegierung.

Magnesiumlegierung.

Binäre Magnesiumlegierung.

Verfahren zur Herstellung einer Magnesiumlegierung von hoher Festigkeit.

Zur Herstellung von Magnesiumlegierungen geeignete Legierung.

Magnesiumlegierung.

Magnesiumlegierung und Verfahren zu ihrer Herstellung.

Magnesiumlegierung.

Procédé d'amélioration des propriétés des alliages à base de magnésium contenant un ou plusieurs métaux des terres cériques.

Procédé d'augmentation de la résistance à la corrosion des alliages à base de magnésium et contenant en outre des métaux des terres cériques et du manganèse.

Magnesiumlegierung.

Magnesiumlegierung.

Procédé de préparation d'alliages de magnésium avec des métaux de terres cériques.

Magnesiumlegierung.

Magnesiumlegierung.

Magnesium-Aluminium-Legierung.

Magnesium-Legierung.

Procédé pour l'obtention d'alliages fondus à base de magnésium destinés à être coulés sous pression.

Verfahren zum Entfernen von Eisen aus Metallschmelzen mit mehr als 80% Magnesium.

Alliage de magnésium.

Alliage de magnésium

Procédé de préparation d'alliages à base de magnésium

Procédé de traitement par la chaleur d'un alliage à base de magnésium et alliage traité par ledit procédé

Magnesiumlegierung.

Magnesiumlegierung.

Biodegradable implant and method for manufacturing same

This invention relates to a biodegradable implant including magnesium, wherein the magnesium contains, as impurities, (i) manganese (Mn); and (ii) one selected from the group consisting of iron (Fe), nickel (Ni) and mixtures of iron (Fe) and nickel (Ni), wherein the impurities satisfy the following condition: 0</(i)≦5, and an amount of the impurities is 1 part by weight or less but exceeding 0 parts by weight based on 100 parts by weight of the magnesium, and to a method of manufacturing the same.

Corrosion resistance of magnesium alloy article surfaces

Surfaces of magnesium-base alloy workpieces may be mechanically worked and deformed to increase their resistance to corrosion, especially corrosion occurring in the presence of water or water and salt or other corrosive media. Workpiece surfaces that are to be thus protected are engaged in squeezing, sliding, and frictional contact with a suitable burnishing or other working tool that traverses the surface to compress and deform it and to refine the metallurgical grain structure. For example, the grain size is reduced in a surface layer that may extend to a depth of up to a few millimeters. And grain orientation is altered within that depth. The tool is not employed to intentionally remove material from the surface of the workpiece. The initial dimensioning of the workpiece may take into consideration the alteration of surfaces by the mechanical working process.

Linear object, bolt, nut and washer each comprising magnesium alloy

There is provided a linear object comprising magnesium-alloy having not only excellent heat resistance but also excellent plastic formability. The linear object comprising magnesium-alloy contains, on a mass percent basis, 0.1% to 6% Y, one or more elements selected from the group consisting of 0.1% to 6% Al, 0.01% to 2% Zn, 0.01% to 2% Mn, 0.1% to 6% Sn, 0.01% to 2% Ca, 0.01% to 2% Si, 0.01% to 2% Zr, and 0.01% to 2% Nd, and the balance being Mg and incidental impurities, in which the linear object comprising magnesium-alloy has a creep strain of 1.0% or less, the creep strain being determined by a creep test at a temperature of 150° C. and a stress of 75 MPa for 100 hours.

COMPOSITE MATERIAL, PART FOR CONTINUOUS CASTING, CONTINUOUS CASTING NOZZLE, CONTINUOUS CASTING METHOD, CAST MATERIAL, AND MAGNESIUM ALLOY CAST COIL MATERIAL

Provided is a composite material suitable for forming a part for continuous casting capable of producing cast materials of excellent surface quality for a long period of time and with which a molten metal is inhibited from flowing into a gap between a nozzle and a moving mold. 1. A composite material that constitutes at least part of a part for continuous casting used in continuous casting of a molten metal of pure magnesium or a magnesium alloy , the composite material comprising:a porous body having pores; anda filler incorporated in at least part of a portion that comes into contact with the molten metal, the portion being part of a surface portion of the porous body, wherein the filler contains at least one selected from a nitride, a carbide, and carbon as a main component.2. The composite material according to claim 1 , further comprising:a coating layer on a surface of the porous body in the portion where the filler is incorporated,wherein the coating layer contains at least one selected from a nitride, a carbide, and carbon as a main component.3. The composite material according to claim 2 , wherein the coating layer contains alumina as a component other than the main component.4. The composite material according to claim 2 , wherein the coating layer has a relative density of 30% or more and 95% or less.5. The composite material according to claim 2 , wherein the coating layer has a thickness of 200 μm or more.6. The composite material according to claim 2 , wherein the coating layer is a layer formed by fixing a powder to a surface of the porous body by a heat treatment.7. The composite material according to claim 1 , wherein the porous body has a flexural modulus of 90 GPa or less.8. The composite material according to claim 1 , wherein the porous body has a heat conductivity of 15 W/m·K or more in a plane direction of the porous body.9. A part for continuous casting used in continuously casting pure magnesium or a magnesium alloy claim 1 ,{'claim-ref': ...

MAGNESIUM ALLOY SHEET MATERIAL

Disclosed is a magnesium alloy material having excellent tensile strength and favorable ductility. Therefore, the magnesium alloy sheet material formed by rolling a magnesium alloy having a long period stacking order phase crystallized at the time of casting includes in a case where a sheet-thickness traverse section of an alloy structure is observed at a substantially right angle to the longitudinal direction by a scanning electron microscope, a structure mainly composed of the long period stacking order phase, in which at least two or more αMg phases having thickness in the observed section of 0.5 μm or less are laminated in a layered manner with the sheet-shape long period stacking order phase. 1. A magnesium alloy sheet material formed by rolling a magnesium alloy having a long period stacking order phase crystallized at the time of casting , comprising:in a case where a sheet-thickness traverse section of an alloy structure is observed at a substantially right angle to the longitudinal direction by a scanning electro microscope,a structure mainly composed of the long period stacking order phase, in which at least two or more αMg phases having thickness in the observed section of 0.5 μm or less are laminated in a layered manner with the sheet-shape long period stacking order phase.27.-. (canceled)8. The magnesium alloy sheet material according to claim 1 , comprising 2 atom % of Zn claim 1 , 2 atom % of Y claim 1 , and the remaining part including Mg and unavoidable impurities.9. The magnesium alloy sheet material according to claim 1 , wherein regarding the structure mainly composed of the long period stacking order phase claim 1 , in a case where a section cut in the sheet thickness direction along the rolling direction of the magnesium alloy sheet material is observed from the perpendicular direction of the section claim 1 , a range of an area ratio of the long period stacking order phase is 36% or more.10. The magnesium alloy sheet material according to ...

NON-FLAMMABLE MAGNESIUM ALLOY WITH EXCELLENT MECHANICAL PROPERTIES, AND PREPARATION METHOD THEREOF

A magnesium alloy that has excellent ignition resistance and is excellent in both strength and ductility. The magnesium alloy includes, by weight, 1.0% or greater but less than 7.0% of Al, 0.05% to 2.0% of Ca, 0.05% to 2.0% of Y, greater than 0% but not greater than 6.0% of Zn, and the balance of Mg, and the other unavoidable impurities. The total content of the Ca and the Y is equal to or greater than 0.1% but less than 2.5% of the total weight of the magnesium alloy. The Mg alloy forms a dense composite oxide layer that acts as a protective film. Thus the Mg alloy has very excellent oxidation resistance and ignition resistance, can be melted, cast and machined in the air or a common inert atmosphere (Ar or N), and can reduce the spontaneous ignition of chips that are accumulated during the process of machining. 1. A magnesium alloy manufactured by melt casting , the magnesium alloy comprising , by weight , 1.0% or greater but less than 7.0% of Al , 0.05% to 2.0% of Ca , 0.05% to 2.0% of Y , greater than 0% but not greater than 6.0% of Zn , a balance of Mg , and other unavoidable impurities ,wherein a total content of the Ca and the Y is equal to or greater than 0.1% but less than 2.5% of a total weight of the magnesium alloy.2. The magnesium alloy of claim 1 , wherein a content of the Ca ranges claim 1 , by weight claim 1 , from 0.2% to 1.5%.3. The magnesium alloy of claim 1 , wherein a content of the Y ranges claim 1 , by weight claim 1 , from 0.1% to 1.5%.4. The magnesium alloy of claim 1 , wherein contents of the Ca and the Y range from 0.3% to 2.0% of a total weight of the magnesium alloy.5. The magnesium alloy of claim 1 , further comprising claim 1 , by weight claim 1 , greater than 0% but not greater than 1.0% of Mn.6. The magnesium alloy of claim 1 , further comprising claim 1 , by weight claim 1 , 0.1% to 1.0% of Zr.7. A method of manufacturing a magnesium alloy claim 1 , comprising:forming a magnesium alloy molten metal, which contains Mg, Al and Zn; ...

HIGH-STRENGTH MAGNESIUM ALLOY WIRE ROD, PRODUCTION METHOD THEREFOR, HIGH-STRENGTH MAGNESIUM ALLOY PART, AND HIGH-STRENGTH MAGNESIUM ALLOY SPRING

A high-strength magnesium alloy wire rod suitable for products in which at least one of bending stress and twisting stress primarily acts is provided. The wire rod has required elongation and 0.2% proof stress, whereby strength and formability are superior, and has higher strength in the vicinity of the surface. In the wire rod, the surface portion has the highest hardness in a cross section of the wire rod, the highest hardness is 170 HV or more, and the inner portion has a 0.2% proof stress of 550 MPa or more and an elongation of 5% or more. 1. A high-strength magnesium alloy wire rod used for members in which at least one of bending stress and twisting stress primarily acts , the wire rod comprising:a surface portion having the highest hardness in a cross section of the wire rod, the highest hardness being 170 HV or more;an inner portion having a 0.2% proof stress of 550 MPa or more and an elongation of 5% or more.2. The high-strength magnesium alloy wire rod according to claim 1 , whereinthe magnesium contains Mg as a main element and Ni and Y.3. The high-strength magnesium alloy wire rod according to claim 2 , whereinthe magnesium consists of 2 to 5 atomic % of Ni, 2 to 5 atomic % of Y, and the balance of Mg and inevitable impurities.4. The high-strength magnesium alloy wire rod according to claim 1 , wherein the portion having the highest hardness in the vicinity of the surface has an average grain diameter of 1 μm measured by an EBSD method.5. A production method for a high-strength magnesium alloy wire rod claim 1 , the method comprising:a step for yielding a raw material in a form of foil strips, foil pieces, or fibers of a magnesium alloy by a rapid solidification method,a sintering step for forming a billet by bonding, compressing, and sintering the raw material,{'claim-ref': {'@idref': 'CLM-00001', 'claim 1'}, 'a step for plastic forming the billet, thereby obtaining the wire rod according to .'}6. A production method for a high-strength magnesium alloy ...

MAGNESIUM ALLOYS CONTAINING HEAVY RARE EARTHS

Magnesium alloys which possess good processability and/or ductility whilst retaining good resistance to corrosion and/or degradation comprising Y: 0-10% by weight, Nd: 0-5% by weight, wherein the total of Y+Nd is at least 0.05% by weight, one or more heavy rare earths selected from Ho, Lu, Tm and Tb in a total amount of above 0.5% and no more than 5.5% by weight, Gd: 0-3.0% by weight, and Sm: 0-0.2% by weight. The alloy optionally includes one or more of: Dy: 0-8% by weight; Zr: 0-1.2% by weight; Al: 0-7.5% by weight; Zn and/or Mn: 0-2% by weight in total; Sc: 0-15% by weight; In: 0-15% by weight; Ca: 0-3% by weight; Er up to 5.5% by weight, provided that the total of Er, Ho, Lu, Tm and Tb is no more than 5.5% by weight; and one or more rare earths and heavy rare earths other than Y, Nd, Ho, Lu, Tm, Tb, Dy, Gd and Er in a total amount of up to 0.5% by weight; the balance being magnesium and incidental impurities up to a total of 0.3% by weight. 1. A magnesium alloy suitable for fabricating into a medical implant comprising:Y: 0-10% by weight,Nd: 0-5% by weight, one or more heavy rare earths selected from Ho, Lu, Tm and Tb in a total amount of above 0.5% and no more than 5.5% by weight,', 'Gd: 0-3.0% by weight, and', 'Sm: 0-0.2% by weight,', Dy: 0-8% by weight,', 'Zr: 0-1.2% by weight,', 'Al: 0-7.5% by weight,', 'Zn and/or Mn: 0-2% by weight in total,', 'Sc: 0-15% by weight,', 'In: 0-15% by weight,', 'Ca: 0-3% by weight,', 'Er up to 5.5% by weight, provided that the total of Er, Ho, Lu, Tm and Tb is no more than 5.5% by weight, and', 'one or more rare earths and heavy rare earths other than Y, Nd, Ho, Lu, Tm, Tb, Dy, Gd and Er in a total amount of up to 0.5% by weight,, 'wherein optionally the alloy includes one or more of], 'wherein the total of Y+Nd is at least 0.05% by weight,'}the balance being magnesium and incidental impurities up to a total of 0.3% by weight.2. An alloy as claimed in wherein the content of Y is 0.05-5% by weight.3. An alloy as claimed in ...

Magnesium-based alloy for wrought applications

An improved magnesium-based alloy for wrought applications is disclosed, including a method of fabricating alloy sheet from said alloy. The improved magnesium-based alloy consists of: 0.5 to 4.0% by weight zinc; 0.02 to 0.70% by weight a rare earth element, or mixture of the same including gadolinium; and incidental impurities. The rare earth clement in some embodiments may be yttrium and/or gadolinium. In some embodiments the magnesium-based alloy may also consist of a grain refiner and in some embodiments the grain refiner may be zirconium. In combination, the inclusion of zinc and a rare earth element, into the magnesium alloy may have enhanced capacity for rolling workability, deep drawing at low temperatures and stretch formability at room temperature. The improved alloy may also exhibit increased tensile strength and formability while evincing a reduced tendency for tearing during preparation.

Magnesium alloy sheet having improved formability at room temperature, and method for manufacturing same

Provided are a magnesium alloy sheet having improved formability at room temperature and a method for manufacturing same. According to one embodiment of the present invention, the method for manufacturing the magnesium alloy sheets having improved formability at room temperature is characterized by comprising a first pretreatment step of applying residual compression stress to the surface the magnesium alloy raw material.

Magnesium-Alloy Member, Compressor for Use in Air Conditioner, and Method for Manufacturing Magnesium-Alloy Member

A magnesium alloy member capable of achieving a mechanical strength and a high-temperature fatigue strength sufficient for a compressor for in automotive air conditioners The magnesium alloy member is formed by subjecting a cast material of a magnesium alloy containing, on the basis of mass %, from 0.3% to 10% calcium (Ca), from 0.2% to 15% aluminum (Al), and from 0.05% to 1.5% manganese (Mn), and containing calcium (Ca) and aluminum (Al) at a calcium/aluminum mass ratio of from 0.6 to 1.7, with the balance being magnesium (Mg) and inevitable impurities to plastic working (extrusion processing) at from 250° C. to 500° C. This makes it possible to obtain a magnesium alloy member having a room-temperature 0.2% proof stress of 300 MPa or more and a 150° C. fatigue strength of 100 MPa or greater. 1. A magnesium alloy member obtained by subjecting a cast material of a magnesium alloy containing , on the basis of mass % , from 0.3% to 10% calcium , from 0.2% to 15% aluminum , and from 0.05% to 1.5% manganese , and containing calcium and aluminum at a calcium/aluminum mass ratio of from 0.6 to 1.7 , with the balance being magnesium and inevitable impurities to plastic working at from 250° C. to 500° C.2. The magnesium alloy member according to claim 1 , wherein the plastic working is followed by solution heat treatment and artificial aging treatment.3. The magnesium alloy member according to claim 2 , wherein after the plastic working claim 2 , the magnesium alloy member is subjected to solution heat treatment to retain the magnesium alloy member for at least 0.08 hour at a treatment temperature of from 450° C. to 510° C. claim 2 , and then claim 2 , the resulting member is subjected to artificial aging treatment to retain the resulting member for at least 0.3 hour at a treatment temperature of from 150° C. to 250° C.4. A magnesium alloy member obtained by subjecting a cast material of a magnesium alloy containing claim 2 , on the basis of mass % claim 2 , from 0.3% to 10% ...

Rolled magnesium alloy material, magnesium alloy structural member, and method for producing rolled magnesium alloy material

Provided are a rolled Mg alloy material whose mechanical properties are locally different in a width direction, a Mg alloy structural member produced by plastically working the rolled Mg alloy material, and a method for producing the rolled Mg alloy material. The method for producing a rolled Mg alloy material includes rolling a Mg alloy material with a reduction roll. The reduction roll has three or more regions in the width direction. The temperature is controlled in each of the regions so that a difference between a maximum temperature and a minimum temperature exceeds 10° C. in the width direction of a surface of the reduction roll. The rolled state in the width direction is varied by varying a difference in temperature over the width direction of the reduction roll. As a result, it is possible to produce a rolled Mg alloy material whose mechanical properties are locally different in the width direction.

MAGNESIUM ALLOY MATERIAL AND METHOD FOR PRODUCING THE SAME

There are provided a magnesium alloy material and a method for producing the magnesium alloy material. In a magnesium (Mg) alloy material (e.g., Mg alloy sheet) having a sheet-shaped portion with a thickness of 1.5 mm or more, when a region having ¼ the thickness of the sheet-shaped portion in a thickness direction from a surface of the sheet-shaped portion is defined as a surface region and a remaining region is defined as an internal region, the ratio O/Oof the basal plane peak ratio Oin the surface region to the basal plane peak ratio O(degree of orientation of (002) planes) in the internal region satisfies 1.05 Подробнее

MAGNESIUM ALLOY AND MANUFACTURING METHOD FOR SAME

There are provided a magnesium alloy material and a method for producing the magnesium alloy material. In a magnesium (Mg) alloy material having a sheet-shaped portion with a thickness of 1.5 mm or more, when a region having ¼ the thickness of the sheet-shaped portion in a thickness direction from a surface of the sheet-shaped portion is defined as a surface region and a remaining region is defined as an internal region, the ratio O/Oof the basal plane peak ratio Oin the surface region to the basal plane peak ratio O(degree of orientation of (002) planes) in the internal region satisfies 0.95≦O/O≦1.05. A sheet-shaped Mg alloy material is obtained by performing at least one pass of the rolling at a reduction ratio of 25% or more and the remaining passes of the rolling at a reduction ratio of 10% or more. 15.-. (canceled)7. The magnesium alloy material according to claim 6 , wherein claim 6 , when an average crystal grain size in the surface region is defined as Dand an average crystal grain size in the internal region is defined as D claim 6 , a ratio D/Dof the average crystal grain size Din the internal region to the average crystal grain size Din the surface region satisfies ⅔≦D/D≦3/2≧D≧3.5 μm claim 6 , and D≧3.5 μm.8. The magnesium alloy material according to claim 6 , wherein claim 6 , when a Vickers hardness (Hv) in the surface region is defined as Hand a Vickers hardness (Hv) in the internal region is defined as H claim 6 , a ratio H/Hof the Vickers hardness Hin the internal region to the Vickers hardness Hin the surface region satisfies 0.85≦H/H≧1.2.9. The magnesium alloy material according to claim 7 , wherein claim 7 , when a Vickers hardness (Hv) in the surface region is defined as Hand a Vickers hardness (Hv) in the internal region is defined as H claim 7 , a ratio H/Hof the Vickers hardness Hin the internal region to the Vickers hardness Hin the surface region satisfies 0.85≦H/H≦1.2.10. The magnesium alloy material according to claim 6 , wherein the ...

MG-AL-CA-BASED MASTER ALLOY FOR MG ALLOYS, AND A PRODUCTION METHOD THEREFOR

The present invention relates to an Mg—Al—Ca based master alloy for Mg alloys and to a production method therefor, and concerns an alloying master alloy used for magnesium or magnesium alloys. To this end, a feature of the invention is that, while the Ca:Al ration in the composition is maintained at between 7:3 and 1:9, based on percentages by weight in the alloy, a balance of Mg is added in an amount of up to 85% of the entire weight of the master alloy, based on percentage by weight. The production method comprises the steps of: preparing components of a master alloy by selecting a composition in which, while the Ca:Al ration in the composition is maintained at between 7:3 and 1:9, based on percentages by weight in the alloy, there is a balance of Mg in an amount of up to 85% of the entire weight of the master alloy, based on percentage by weight; sequentially melting Mg, Al and Ca; completely melting the components by applying an adequate amount of heat; and rapidly cooling the molten pool. 1. An Mg—Al—Ca based master alloy for Mg alloys , wherein while a Ca:Al composition ratio is maintained at between 7:3 and 1:9 , based on percentages by weight in the alloy , a balance of Mg is added in an amount of up to 85% of the entire weight of the master alloy , based on percentage by weight.2. The Mg—Al—Ca based master alloy of claim 1 , wherein the Ca:Al composition ratio is maintained at between 6:4 and 2:8 claim 1 , based on percentages by weight.3. The Mg—Al—Ca based master alloy of claim 1 , wherein the content of Al is contained in an amount of 15% or greater of the entire weight of the Mg—Al—Ca based master alloy claim 1 , based on percentage by weight.4. The Mg—Al—Ca based master alloy of claim 1 , wherein while the Ca:Al composition ratio is maintained at 4.3:5.7 claim 1 , Mg is contained in an amount of 65% of the entire weight of the master alloy claim 1 , based on percentage by weight.5. A production method of an Mg—Al—Ca based master alloy for Mg alloys ...

MAGNESIUM-ZINC-STRONTIUM ALLOYS FOR MEDICAL IMPLANTS AND DEVICES

A medical implant and/or device, which includes a biodegradable and cytocompatible magnesium-zinc-strontium alloy is disclosed. The implant and/or device can include a biodegradable and cytocompatible magnesium-zinc-strontium (Mg—Zn—Sr) alloy having a weight percent composition of Zn and Sr as follows: 0.01≦Zn≦6 wt %, 0.01≦Sr≦3 wt %. A method for manufacturing an implant in the form of a biodegradable and cytocompatible magnesium-zinc-strontium alloy is disclosed, which includes melting the biodegradable and cytocompatible magnesium-zinc-strontium alloy in an inert environment and molding the biodegradable magnesium-zinc-strontium alloy in a semi-solid state. 1. A medical implant and/or device comprising:a biodegradable and cytocompatible magnesium-zinc-strontium alloy.2. The implant and/or device according to claim 1 , wherein the biodegradable and cytocompatible magnesium-zinc-strontium (Mg—Zn—Sr) alloy has a weight percent composition of Zn and Sr as follows: 0.01≦Zn≦6 wt % claim 1 , 0.01≦Sr≦3 wt %.3. The implant and/or device according to claim 1 , wherein the biodegradable and cytocompatible magnesium-zinc-strontium (Mg—Zn—Sr) alloy has a weight percent of 91-95.84 wt. % Mg claim 1 , 0.01-6 wt. % Zn and 0.01-3 wt. % Sr.4. The medical implant and/or device according to claim 1 , wherein the implant is an orthopedic claim 1 , dental claim 1 , plastic surgical or vascular implant.5. The medical implant or device according to the claim 4 , wherein the orthopedic claim 4 , dental claim 4 , plastic surgical or vascular implant is a bone screw claim 4 , a bone anchor claim 4 , a tissue staple claim 4 , a suture claim 4 , a craniofacial claim 4 , maxillofacial reconstruction plate claim 4 , a fastener claim 4 , a reconstructive dental implant claim 4 , a medical fixation devices claim 4 , or an embolization material.6. The medical implant or device according to claim 1 , wherein the implant is composed of only the biodegradable magnesium-zinc-strontium alloy.7. The ...

Alloy production method and alloy produced by the same

Provided are an alloy production method that may easily distribute a compound in a matrix of an alloy while maintaining the quality of a molten metal, and an alloy produced by the same. In accordance with an exemplary embodiment, the method includes forming a molten metal in which a mother alloy including at least one kind of first compound and a casting metal are melted, and casting the molten metal, wherein the mother alloy is a magnesium mother alloy or aluminum mother alloy.

Low-cost high-plasticity wrought magnesium alloy and its preparation method

The invention belongs to magnesium alloy design field, and relates to a low-cost high-plasticity wrought magnesium alloy. The magnesium alloy is made from the raw materials with components as follows: between 0.10% and 1.00% by mass of tin, between 0.10% and 3.00% by mass of aluminum, between 0.10% and 1.00% by mass of manganese, and commercially pure magnesium and inevitable impurities in balance. The magnesium alloy is prepared by the steps of: melting magnesium and aluminum, adding tin and then adding microalloyed element manganese, stirring, refining, casting to form ingots followed by homogenized heat treatment, and extruding to obtain a corresponding profile; or directly extruding to obtain a corresponding profile without homogenization. The invention is characterized by controlling the content of the high-cost raw material tin through using the raw material aluminum that is low in cost and low in melting point to obtain a low-cost high-plasticity wrought magnesium alloy.

Film And Coatings From Nanoscale Graphene Platelets

A composite material includes a magnesium alloy and a layer consisting of nanoscale graphene platelets on at least a part of the surface of the magnesium alloy. A process for manufacturing such a composite material includes providing a magnesium alloy, providing nanoscale graphene platelets and applying the nanoscale graphene platelets to at least a part of the surface of the magnesium alloy. 1. A composite material comprising:a) a magnesium alloy; andb) a layer of nanoscale graphene platelets on at least a part of the magnesium alloy surface.2. The composite material according to claim 1 , wherein the magnesium alloy comprises at least one component selected from the group consisting of yttrium (Y) claim 1 , neodymium (Nd) claim 1 , terbium (Tb) claim 1 , dysprosium (Dy) claim 1 , holmium (Ho) claim 1 , erbium (Er) claim 1 , thulium (Tm) claim 1 , ytterbium (Yb) claim 1 , lutetium (Lu) claim 1 , zirconium (Zr) claim 1 , zinc (Zn) claim 1 , gadolinium (Gd) claim 1 , scandium (Sc) claim 1 , lanthanum (La) claim 1 , cerium (Ce) claim 1 , praseodymium (Pr) claim 1 , promethium (Pm) claim 1 , samarium (Sm) claim 1 , europium (Er) aluminium (Al) claim 1 , calcium (Ca) claim 1 , silicon (Si) claim 1 , manganese (Mn) claim 1 , lithium (Li) claim 1 , silver (Ag) and mixtures thereof as a further alloy component.3. The composite material according to claim 1 , wherein the magnesium alloy comprises magnesium in a quantity from 80 to 98% by weight relative to the total weight of the magnesium alloy.4. The composite material according to claim 1 , wherein the layer of nanoscale graphene platelets is substantially present over the entire surface of the magnesium alloy.5. The composite material according to claim 1 , wherein the layer of nanoscale graphene platelets has a layer thickness from 10 to 1 claim 1 ,000 nm.6. The composite material according to claim 1 , wherein the layer of nanoscale graphene platelets includes multiple layers.7. The composite material according to ...

MULTI-LAYERED ZINC ALLOY PLATED STEEL HAVING EXCELLENT SPOT WELDABILITY AND CORROSION RESISTANCE

Provided is a multilayer zinc alloy plated steel material comprising a base steel material and multiple plating layers formed on the base steel material, wherein each of the multiple plating layers includes one of a Zn plating layer, a Mg plating layer, and a Zn—Mg alloy plating layer, and the ratio of the weight of Mg contained in the multiple plating layers to the total weight of the multiple plating layers is from 0.13 to 0.24. 1. A multilayer zinc alloy plated steel material comprising a base steel material and multiple plating layers formed on the base steel material ,wherein the ratio of the weight of Mg contained in the multiple plating layers to the total weight of the multiple plating layers is from 0.13 to 0.24, andeach of the multiple plating layers comprises at least one of a Zn single phase, a Mg single phase, and a Zn—Mg alloy phase, and has a phase structure different from phase structures of adjacent plating layers.2. (canceled)3. The multilayer zinc alloy plated steel material of claim 1 , wherein when a GDS profile is measured at a thicknesswise center portion of each of the multiple plating layers claim 1 , a Mg content deviates within a range of ±5%.4. The multilayer zinc alloy plated steel material of claim 1 , wherein grains of the multiple plating layers have an average diameter within a range of 100 nm or less (excluding 0 nm).5. The multilayer zinc alloy plated steel material of claim 1 , wherein the sum of plating amounts of the multiple plating layers is within a range of 40 g/mor less (excluding 0 g/m).6. (canceled)7. The multilayer zinc alloy plated steel material of claim 1 , wherein when spot welding is performed on the multilayer zinc alloy plated steel material claim 1 , the multiple plating layers are changed to a single alloy layer in a weld zone claim 1 , and the single alloy layer in the weld zone comprises a MgZnalloy phase in an area fraction of 90% or greater (including 100%).8. The multilayer zinc alloy plated steel material ...

BIODEGRADEABLE IMPLANT COMPRISING COATED METAL ALLOY PRODUCT

The invention relates to a biodegradable implant comprising a surface coated magnesium alloy or zinc alloy product, whereby the coating layer comprises oxides and/or phosphates of from rare-earth elements, Mg, Ca, Zn, Zr, Cu, Fe, Sr, Li, Mn or Ag wherein the coating is preferably generated by plasma electrolytically oxidation (PEO). The invention further comprises a method for preparing the coated magnesium or zinc alloy product of the implant. 113-. (canceled)14. Biodegradable implant comprising a magnesium or zinc alloy productcoated on its surface with a coating layer comprising at least three substances beinga. a metal oxide of a metal selected from rare-earth elements, Mg, Ca, Zn, Zr, Cu, Sr, Li, Mn or Ag; and/orb. a metal phosphate of a metal selected from rare-earth elements, Mg,Ca, Zn, Zr, Cu, Sr, Li, Mn or Ag.15. Biodegradable implant according to claim 14 , wherein the coated magnesiumor zinc alloy product comprises the following characteristic: the metal oxide or metal phosphate forms an amorphous domain within the coating layer.16. Biodegradable implant according to claim 14 , wherein the metal oxide ormetal phosphate of the coated magnesium or zinc alloy product forms a crystalline domain within the coating layer.17. Biodegradable implant according to claim 14 , wherein the coatedmagnesium or zinc alloy product comprises the following characteristic: the coating layer has a thickness of between 2 to 50 μm, preferably 5 to 35 μm, particularly preferably of between 8 to 24 μm and especially of between 12 to 18 μm.18. Biodegradable implant according to claim 14 , wherein the coated magnesium or zinc alloy product comprises the following characteristic: the coating layer comprises metal fluorides which increase in their concentration starting from the top surface of the coating layer down to the bottom claim 14 , alloy-product oriented surface of the coating layer claim 14 , building preferably a distinct metal fluoride enriched zone at the bottom surface ...

CORRODIBLE DOWNHOLE ARTICLE

A corrodible downhole article includes a magnesium alloy. The magnesium alloy includes: 1-9 wt % Zn; 1-2 wt % Cu; 0.5-1.0 wt % Mn; and 0.1-5 wt % of a corrosion promoting element (e.g., Ni). The alloy can have a 0.2% proof strength of at least 150 MPa when tested using standard tensile test method ASTM B557-10. 1. A corrodible downhole article comprising a magnesium alloy , the magnesium alloy comprising:1-9 wt % Zn;1-2 wt % Cu;0.5-1.0 wt % Mn; and0.1-5 wt % of a corrosion promoting element.2. The corrodible downhole article of wherein said corrosion promoting element includes Ni.3. The corrodible downhole article of comprising 5-8 wt % Zn.4. The corrodible downhole article of comprising Zn claim 1 , Cu claim 1 , Mn and said corrosion promoting element claim 1 , wherein the remainder is said magnesium and incidental impurities.5. The corrodible downhole article of wherein the corrodible downhole article is a downhole tool.6. The corrodible downhole article of wherein the alloy has a 0.2% proof strength of at least 150 MPa when tested using standard tensile test method ASTM B557-10. This disclosure relates to a magnesium alloy suitable for use as a corrodible downhole article, a method for making such an alloy, an article comprising the alloy and the use of the article.The oil and gas industries utilise a technology known as hydraulic fracturing or “fracking”. This normally involves the pressurisation with water of a system of boreholes in oil and/or gas bearing rocks in order to fracture the rocks to release the oil and/or gas.In order to achieve this pressurisation, valves may be used to separate different sections of a borehole system. These valves are referred to as downhole valves, the word downhole being used in the context of the disclosure to refer to an article that is used in a well or borehole.One way of forming such valves involves the use of spheres of material known as fracking balls to seal off parts of a borehole. Fracking balls may be made from ...

MAGNESIUM-LITHIUM ALLOY, ROLLED STOCK MADE OF MAGNESIUM-LITHIUM ALLOY, AND PROCESSED PRODUCT INCLUDING MAGNESIUM-LITHIUM ALLOY AS MATERIAL

According to one implementation, a magnesium-lithium alloy contains not less than 10.50 mass % and not more than 16.00 mass % lithium, not less than 5.00 mass % and not more than 12.00 mass % aluminum, and not less than 2.00 mass % and not more than 8.00 mass % calcium. According to one implementation, a rolled stock is made of the above-mentioned magnesium-lithium alloy. According to one implementation, a processed product includes the above-mentioned magnesium-lithium alloy as a material. 1. A magnesium-lithium alloy that contains not less than 10.50 mass % and not more than 16.00 mass % lithium , not less than 5.00 mass % and not more than 12.00 mass % aluminum , and not less than 2.00 mass % and not more than 8.00 mass % calcium.2. The magnesium-lithium alloy according to claim 1 , further containing at least one of more than 0 mass % and not more than 3.00 mass % zinc claim 1 , more than 0 mass % and not more than 1.00 mass % yttrium claim 1 , more than 0 mass % and not more than 1.00 mass % manganese claim 1 , and more than 0 mass % and not more than 1.00 mass % silicon.3. The magnesium-lithium alloy according to claim 1 ,wherein a temperature at which a spark occurs is not less than 600° C.4. The magnesium-lithium alloy according to claim 1 ,wherein a temperature at which combustion continues is not less than 650° C.5. A rolled stock made of the magnesium-lithium alloy according to .6. A processed product including the magnesium-lithium alloy according to as a material.7. The magnesium-lithium alloy according to claim 2 ,wherein a temperature at which a spark occurs is not less than 600° C.8. The magnesium-lithium alloy according to claim 2 ,wherein a temperature at which combustion continues is not less than 650° C.9. The magnesium-lithium alloy according to claim 3 ,wherein a temperature at which combustion continues is not less than 650° C.10. A rolled stock made of the magnesium-lithium alloy according to .11. A rolled stock made of the magnesium-lithium ...

High strength and high toughness magnesium alloy and method of producing the same

A high strength and high toughness magnesium alloy, characterized in that it is a plastically worked product produced by a method comprising preparing a magnesium cast product containing a atomic % of Zn, b atomic % in total of at least one element selected from the group consisting of Dy, Ho and Er, a and b satisfying the following formulae (1) to (3), and the balance amount of Mg, subjecting the magnesium alloy cast product to a plastic working to form a plastically worked product, and it has a hcp structure magnesium phase and a long period stacking structure phase at an ordinary temperature; 0.2≦ a ≦5.0  (1) 0.2≦ b ≦5.0  (2) 0.5 a −0.5≦ b   (3)

Magnesium base alloy tube and its manufacturing method

[Problem] To present a small-diameter magnesium base alloy tube and its manufacturing method of long length, high dimensional precision, and excellent mechanical properties. [Solving Means] A raw material 1 of aluminum base alloy is extruded and formed by using a forming pattern comprising an upper pattern 2 having plural through-holes 21 for supplying the raw material into diaphragms of equal angles on the circumference and circular cylindrical protrusions 22 positioned in the center of plural through-holes 21 so as to be surrounded by plural through-holes 21 at the exit side of the through-holes 21, and a lower pattern 3 positioned in the concave portions commonly penetrating at the exit of the plural through-holes 21 of the upper pattern 2, having through-holes 32 for inserting the protrusions of circular circumference of the upper pattern by providing a tube forming gap, positioned in the center of concave portions 31 of the concave portions 31 in the circular columnar shape of the upper pattern 2.

MAGNESIUM ALLOY SHEET

The invention offers a magnesium alloy sheet having excellent warm plastic formability, a production method thereof, and a formed body produced by performing warm plastic forming on this sheet. The magnesium alloy sheet is produced by giving a predetermined strain to a rolled sheet RS that is not subjected to a heat treatment aiming at recrystallization. The sheet is not subjected to the foregoing heat treatment even after the giving of a strain. The strain is given through the process described below. A rolled sheet RS is heated in a heating furnace . The heated rolled sheet RS is passed between rollers to give bending to the rolled sheet RS. The giving of a strain is performed such that the strain-given sheet has a half peak width of 0.20 deg or more and 0.59 deg or less in a (0004) diffraction peak in monochromatic X-ray diffraction. The alloy sheet exhibits high plastic deformability by forming continuous recrystallization during warm plastic forming through the use of the remaining strain. 120-. (canceled)21. A magnesium alloy sheet , comprising magnesium-based alloy and having a half peak width of 0.20 deg or more and 0.59 deg or less in a (0004) diffraction peak in monochromatic X-ray diffraction , wherein:the sheet has a Vickers hardness (Hv) of 85 or more and 105 or less, andthe magnesium-based alloy, constituting the sheet, has a low-confidence-index (low-CI) region that has a confidence index (CI) of less than 0.1 in electron back scattering diffraction (EBSD) measurement, and the low-CI region has an area proportion of 50% or more and less than 90%.22. The magnesium alloy sheet as defined by claim 21 , wherein the magnesium alloy sheet has an indicator value of c-axis orientation of 4.00 or more.23. The magnesium alloy sheet as defined by claim 21 , wherein the sheet has an average c-axis inclining angle of 5 degrees or less.24. The magnesium alloy sheet as defined by claim 21 , the sheet having a surface on which a compressive residual stress exists in ...

HIGH STRENGTH AND HIGH TOUGHNESS MAGNESIUM ALLOY AND METHOD OF PRODUCING THE SAME

A high strength and high toughness magnesium alloy, characterized in that it is a plastically worked product produced by a method comprising preparing a magnesium alloy cast product containing a atomic % of Zn, b atomic % of Y, a and b satisfying the following formulae (1) to (3), and the balance amount of Mg, subjecting the magnesium alloy cast product to a plastic working to form a preliminary plastically worked product, and subjecting the preliminary plastically worked product to a heat treatment, and it has a hcp structure magnesium phase and a long period stacking structure phase at an ordinary temperature; (1) 0.5≦a<5.0 (2) 0.5 Подробнее

CORRODIBLE DOWNHOLE ARTICLE

A magnesium alloy suitable for use as a corrodible downhole article. The alloy has a corrosion rate of at least 50 mg/cm/day in 15% KCl at 93° C. and a 0.2% proof strength of at least 50 MPa when tested using standard tensile test method ASTM B557-10. 1. A magnesium alloy suitable for use as a corrodible downhole article , wherein the alloy has a corrosion rate of at least 50 mg/cm/day in 15% KCl at 93° C. and a 0.2% proof strength of at least 50 MPa when tested using standard tensile test method ASTM B557-10.2. A magnesium alloy as claimed in having a corrosion rate of at least 100 mg/cm/day in 15% KCl at 93° C.3. A magnesium alloy as claimed in having a 0.2% proof strength of at least 150 MPa when tested using standard tensile test method ASTM B557-10.4. A magnesium alloy as claimed in comprising an element selected from the group consisting of Ni claim 1 , Co claim 1 , Ir claim 1 , Au claim 1 , Pd claim 1 , Cu and combinations thereof.5. A magnesium alloy as claimed in comprising said element selected from the group consisting of Ni claim 4 , Co claim 4 , Ir claim 4 , Au claim 4 , Pd claim 4 , Cu and combinations thereof in an amount of 0.01-15 wt %.6. A magnesium alloy as claimed in claim 5 , wherein the 0.2% proof strength of the magnesium alloy when said element selected from the group consisting of Ni claim 5 , Co claim 5 , Ir claim 5 , Au claim 5 , Pd claim 5 , Cu and combinations thereof has been added is at least 80% of the 0.2% proof strength of the base alloy.7. A magnesium alloy as claimed comprising:(a) 0.01-10 wt % of an element selected from the group consisting of Ni, Co, Ir, Au, Pd, Cu and combinations thereof,(b) 1-10 wt % Y,(c) 1-15 wt % of at least one rare earth metal other than Y, and(d) 0-1 wt % Zr.8. A magnesium alloy as claimed in comprising 0.1-8 wt % Ni.9. A magnesium alloy as claimed in comprising 3.3-4.3 wt % Y claim 7 , up to 1 wt % Zr and 1.5-2.5 wt % Nd.10. A magnesium alloy as claimed in having a corrosion rate of 50 to 100 mg/cm/ ...

LOW-COST FINE-GRAIN WEAK-TEXTURE MAGNESIUM ALLOY SHEET AND METHOD OF MANUFACTURING THE SAME

The present invention discloses a Mg—Ca—Zn—Zr magnesium alloy sheet, having the chemical compositions in weight percentage: Ca: 0.5˜1.0%, Zn: 0.4˜1.0%, Zr: 0.5˜1.0%, the remainders being Mg and unavoidable impurities; wherein the magnesium alloy sheet has an average grain size of less than or equal to 10 μm, an interarea texture strength of less than or equal to 5, an interarea texture strength after annealing at 250˜400° C. of less than or equal to 3, and a limiting drawing ratio at room temperature of more than AZ31; and the grain size thereof is remarkably less than that of AZ31B sheet produced in the same conditions, and the sheet texture is notably weakened. The magnesium alloy of the present invention has simple chemical compositions without noble alloy elements therein, thereby having a wide applicability and a low manufacturing cost, which can act as the sheets of interior door panels of cars, inner panels of engine lids, inner panels of trunk lids, internal decorative panels, vehicle bodies in the rail transits, and housings of 3C products, or the like. 1. A Mg—Ca—Zn—Zr magnesium alloy sheet , having the chemical compositions in weight percentage: Ca: 0.5˜1.0% , Zn: 0.4˜1.0% , Zr: 0.5˜1.0% , the remainders being Mg and unavoidable impurities; wherein the magnesium alloy sheet has an average grain size of less than or equal to 10 μm , an interarea texture strength of less than or equal to 5 , an interarea texture strength after annealing at 250˜400° C. of less than or equal to 3 , and a limiting drawing ratio at room temperature of more than AZ31; and the magnesium alloy sheet has a thickness of 0.3˜4 mm.2. A method of producing the Mg—Ca—Zn—Zr magnesium alloy sheet according to claim 1 , which is any one of the following methods (1)˜(3):(1) heating the casting blank of Mg—Ca—Zn—Zr magnesium alloy with the aforementioned composition proportions up to a temperature of 370˜500° C., and carrying out solid solution, then hot rolling and warm rolling, so as to ...

THERMOELECTRIC COMPOSITIONS AND METHODS OF FABRICATING HIGH THERMOELECTRIC PERFORMANCE MgAgSb-BASED MATERIALS

Systems and methods of manufacturing a thermoelectric, high performance material by using ball-milling and hot pressing materials according to various formulas, where some formulas substitute a different element for part of one of the elements in the formula, in order to obtain a figure of merit (ZT) suitable for thermoelectric applications. 1. A method of manufacturing a thermoelectric material comprising:ball-milling a plurality of components to form at least one powder;forming a pressed component by hot-pressing the at least one powder; andannealing the pressed component, wherein the pressed component comprises a ZT value of at least 0.85 at room temperature.2. The method of claim 1 , wherein a first component of the plurality of components comprises magnesium (Mg) claim 1 , silver (Ag) claim 1 , antimony (Sb) claim 1 , copper (Cu) claim 1 , or nickel (Ni) claim 1 , wherein a second component of the plurality of components is one of magnesium (Mg) claim 1 , silver (Ag) claim 1 , antimony (Sb) claim 1 , copper (Cu) claim 1 , or nickel (Ni) claim 1 , and wherein the second component is not the same as the first component.3. The method of claim 1 , wherein a third component of the plurality of components comprises magnesium (Mg) claim 1 , silver (Ag) claim 1 , antimony (Sb) claim 1 , copper (Cu) claim 1 , or nickel (Ni) claim 1 , wherein the third component different than the first component and the second component claim 1 , wherein a fourth component of the plurality of components magnesium (Mg) claim 1 , silver (Ag) claim 1 , antimony (Sb) claim 1 , copper (Cu) claim 1 , chromium (Cr) claim 1 , zinc (Zn) claim 1 , or nickel (Ni) claim 1 , and wherein the fourth component different than the first component claim 1 , the second component claim 1 , and the third component.4. The method of claim 1 , wherein hot-pressing the powder comprises holding the second mixture at a temperature from about 125° C. to about 300° C. for a period of about 0.5 minutes to about 20 ...

Manufacture of Controlled Rate Dissolving Materials

A castable, moldable, or extrudable structure using a metallic base metal or base metal alloy. One or more insoluble additives are added to the metallic base metal or base metal alloy so that the grain boundaries of the castable, moldable, or extrudable structure includes a composition and morphology to achieve a specific galvanic corrosion rates partially or throughout the structure or along the grain boundaries of the structure. The insoluble additives can be used to enhance the mechanical properties of the structure, such as ductility and/or tensile strength. The insoluble particles generally have a submicron particle size. The final structure can be enhanced by heat treatment, as well as deformation processing such as extrusion, forging, or rolling, to further improve the strength of the final structure as compared to the non-enhanced structure. 125-. (canceled)26. A metal cast structure that includes a base metal material and a plurality of particles disbursed in said metal cast structure to obtain a desired dissolution rate of said metal cast structure , said particles having a melting point that is greater than a melting point of said base metal material , said particles constitute about 0.1-40 wt. % of said metal cast structure , said particles have a different galvanic potential from said base metal material , said base metal material is a magnesium alloy or an aluminum alloy , said particles including one or more materials selected from the group consisting of iron , copper , titanium , zinc , tin , cadmium , lead , beryllium , nickel , carbon , iron alloy , copper alloy , titanium alloy , zinc alloy , tin alloy , cadmium alloy , lead alloy , beryllium alloy , and nickel alloy.27. The metal cast structure as defined in claim 26 , wherein said base metal material includes a majority weight percent magnesium.28. The metal cast structure as defined in claim 26 , wherein said particles resist forming compounds with said base metal material due to a solubility ...

MACHINING MAGNESIUM ALLOY CAPABLE OF BEING HEAT TREATED AT HIGH TEMPERATURE

Disclosed are a magnesium (Mg) alloy and a manufacturing method thereof. The Mg alloy has a composition including, by weight, 4% to 10% of Sn, 0.05% to 1.0% of Ca, 0.1% to 2% of at least one element selected from the group including Y and Er, the balance of Mg, and the other unavoidable impurities. The Mg alloy includes an Mg2Sn phase having excellent thermal stability, and is capable of being heat treated at a temperature of 480° C. or more. 1. A wrought magnesium (Mg) alloy having a composition comprising: by weight , 4% to 10% of Sn; 0.05% to 1.0% of Ca; 0.1% to 2% of at least one element selected from the group including Y and Er; the balance of Mg; and the other unavoidable impurities , wherein the Mg alloy includes an MgSn phase having excellent thermal stability , and is capable of being heat treated at a temperature of 480° C. or more.2. The wrought magnesium alloy of claim 1 , wherein the content of Sn ranges claim 1 , by weight claim 1 , from 4.5% to 8.5%.3. The wrought magnesium alloy of claim 1 , wherein the content of Ca ranges claim 1 , by weight claim 1 , from 0.05% to 0.6%.4. The wrought magnesium alloy of claim 1 , wherein the content of the at least one element selected from Y and Er ranges claim 1 , by weight claim 1 , from 0.1% to 1%.5. The wrought magnesium alloy claim 1 , wherein the composition of the Mg alloy further comprises claim 1 , by weight claim 1 , 0.5% to 6.5% of Al.6. The wrought magnesium alloy of claim 1 , wherein the composition of the Mg alloy further comprises claim 1 , by weight claim 1 , 0.1% to 3% of Zn.7. The wrought magnesium alloy of claim 1 , wherein the composition of the Mg alloy further comprises claim 1 , by weight claim 1 , greater than 0% but not greater than 0.5% of Mn.8. The wrought magnesium alloy of claim 1 , wherein the Mg alloy has an ignition temperature of 500° C. or more.9. A method of manufacturing a wrought magnesium alloy claim 1 , the method comprising the steps of:forming a molten magnesium alloy, ...

Degradable Metal Matrix Composite

The present invention relates to the composition and production of an engineered degradable metal matrix composite that is useful in constructing temporary systems requiring wear resistance, high hardness, and/or high resistance to deformation in water-bearing applications such as, but not limited to, oil and gas completion operations.

BIODEGRADABLE MAGNESIUM AND METHOD FOR CONTROLLING DEGRADATION RATE OF BIODEGRADABLE MAGNESIUM

Disclosed are biodegradable magnesium having a biodegradation rate which is determined by controlling an atom packing density of a surface contacting a living body, and a method for controlling the biodegradation rate of magnesium, wherein the biodegradation rate is determined by controlling an atomic packing density of the surface in contact with a living body. 1. Biodegradable magnesium having a biodegradation rate which is determined by controlling an atom packing density of a surface contacting a living body.2. The biodegradable magnesium according to claim 1 ,wherein the magnesium is pure magnesium or a magnesium alloy.3. The biodegradable magnesium according to claim 1 ,wherein the magnesium is polycrystalline magnesium, and the magnesium comprises a texture which is preferentially oriented with a specific crystallographic plane.4. The biodegradable magnesium according to claim 2 ,wherein the magnesium alloy is a solid solution alloy or a precipitation hardening type alloy.5. The biodegradable magnesium according to claim 2 ,wherein the magnesium alloy comprises at least one selected from Ca, Zn, Al, Sn, Mn, Si, Sr, Li, In, Ga, Ba, Ce, La, Nd, Gd or Y.6. The biodegradable magnesium according to claim 1 ,wherein the magnesium is a single crystal magnesium, and the surface in contact with the living body corresponds to (0001), (10-10), (2-1-10); or a crystal plane which is crystallographically the same as the crystal planes; or a crystal plane with an atomic packing density of 0.4 or more.7. The biodegradable magnesium according to claim 3 ,wherein the specific crystal plane is (0001), (10-10), (2-1-10); a crystal plane which is crystallographically the same as the crystal planes; or a crystal plane with an atomic packing density of 0.4 or more.8. A method for controlling the biodegradation rate of magnesium claim 3 ,wherein the biodegradation rate is determined by controlling an atomic packing density of the surface in contact with a living body.9. The method ...

Self-Actuating Device For Centralizing an Object

The invention is directed to the interventionless activation of wellbore devices using dissolving and/or degrading and/or expanding structural materials. Engineered response materials, such as those that dissolve and/or degrade or expand upon exposure to specific environment, can be used to centralize a device in a wellbore. 132-. (canceled)33. A centralizing device configured to be placed on , attached to , or combinations thereof an outside surface of a bore member , said centralizing device includes a body , an active material that includes one or more materials selected from the group consisting of an expandable material and a degradable material , and one or more well bore wall engagement members positioned in a non-deployed position , said one or more well bore wall engagement members including one or more structures selected from the group consisting of slat , wing , bow , leave , ribbon , extension and rib , said one or more well bore wall engagement members configured to move from said non-deployed position to a deployed position , said active configured to cause or to enable said one or more well bore wall engagement members to move from said non-deployed position to said deployed position , a maximum outer perimeter of said centralizing device is greater in size when said one or more well bore wall engagement members are in said deployed position as compared to when said one or more well bore wall engagement members are in said non-deployed position.34. The centralizing device as defined in claim 33 , wherein said active material includes said expandable material claim 33 , said expandable material configured to increase in volume when activated claim 33 , said increase in volume of said expandable material configured to provide a force that causes said one or more well bore wall engagement members to move or deform and thereby move from said non-deployed position to said deployed position.35. The centralizing device as defined in claim 33 , wherein said ...

CORROSION RESISTANT MAGNESIUM ALLOY

According to aspects of the present disclosure, a method includes obtaining a first amount of magnesium, a second amount of manganese, and a third amount of a cathodic poison and combining the magnesium, the manganese, and the cathodic poison to thereby form a kinetically hindered magnesium alloy includes less than 1 part by weight of manganese and less than about 5 parts by weight of cathodic poison based on 100 parts of the kinetically hindered magnesium alloy. The cathodic poison is configured to inhibit a cathodic reaction when combined with the magnesium. 1. A method comprising:obtaining a first amount of magnesium, a second amount of manganese, and a third amount of a cathodic poison, the cathodic poison configured to inhibit a cathodic reaction when combined with the magnesium; andcombining the magnesium, the manganese, and the cathodic poison to thereby form a kinetically hindered magnesium alloy including less than 1 part by weight of manganese and less than about 5 parts by weight of cathodic poison based on 100 parts of the kinetically hindered magnesium alloy.2. The method of claim 1 , wherein the cathodic poison includes at least one element selected from the group consisting of periodic table of the elements Group 14 alloying elements claim 1 , periodic table of the elements Group 15 alloying elements claim 1 , and periodic table of the elements Group 16 alloying elements.3. The method of claim 1 , wherein the cathodic poison consists of silicon.4. The method of claim 1 , wherein the cathodic poison consists of a nonmetallic alloying element.5. The method of claim 1 , wherein the cathodic poison is a nonmetallic alloying element selected from the group consisting of phosphorous claim 1 , sulfur claim 1 , and selenium.6. The method of claim 1 , wherein the cathodic poison consists of at least one periodic table of the elements Group 16 alloying element.7. The method of claim 1 , wherein the first amount of magnesium includes a hydrogen promotor claim 1 ...

ALUMINUM-FREE MAGNESIUM ALLOY

The aluminum-free magnesium alloy consists of a composition comprising 1.4 to 2.2 wt. % manganese, 0.4 to 4.0 cerium, 0.2 to 2.0 wt. % anthanum, 0.001 to 5 wt. % scandium, and magnesium as well as manufacturing-related impurities accounting for the remaining content in the alloy that is missing to make up 100 wt. %, and the ratio of cerium to lanthanum being 2:1. 2. The aluminum-free magnesium alloy according to in the form of profiled extruded or diecast sections.3. The aluminum-free magnesium alloy according to in the form of drawn welding wires. The invention relates to an aluminum-free magnesium alloy and to the use for producing extruded, continuously cast or diecast semi-finished products or components and metal sheets.Magnesium alloys are lightweight construction materials that, compared to the alloys of other metals, have a very low weight and are used where a low weight plays an important role, in particular in automotive engineering, in engine construction, and in aerospace engineering.Offering very good strength properties and low specific weight, magnesium alloys are of great interest as metallic construction materials most notably for vehicle and aircraft construction.A reduction in weight is needed especially in vehicle construction since additional elements are being installed, due to rising comfort and safety standards. Lightweight construction is also important for the design of energy-saving vehicles, in terms of processing magnesium materials, methods involving primary shaping by way of diecasting and metal forming by way of extrusion, forging, rolling, stretch forming or deep drawing are gaining importance. These methods allow lightweight components to be produced, for which demand is growing especially in vehicle construction.Alloys having advantageous mechanical properties, and more particularly having high tensile strength, are included in the related art.A magnesium alloy is known from DE 806 055 which by a composition of 0.5 to 10% metals ...

Galvanically-Active In Situ Formed Particles for Controlled Rate Dissolving Tools

A castable, moldable, and/or extrudable structure using a metallic primary alloy. One or more additives are added to the metallic primary alloy so that in situ galvanically-active reinforcement particles are formed in the melt or on cooling from the melt. The composite contains an optimal composition and morphology to achieve a specific galvanic corrosion rate in the entire composite. The in situ formed galvanically-active particles can be used to enhance mechanical properties of the composite, such as ductility and/or tensile strength. The final casting can also be enhanced by heat treatment, as well as deformation processing such as extrusion, forging, or rolling, to further improve the strength of the final composite over the as-cast material.

Method and system for producing sheets from strand-shaped profiles

A method for producing metal sheets from strand-shaped profiles having a low thickness made of magnesium or magnesium alloys, wherein an open or a closed extruded profile is produced in a preceding method step, wherein the extruded profile exiting the extrusion die of an extrusion press is shaped to form a planar metal sheet by the contactless action of electromagnetic forces.

MULTI-LAYERED ZINC ALLOY PLATED STEEL HAVING EXCELLENT SPOT WELDABILITY AND CORROSION RESISTANCE

Provided is a multilayer zinc alloy plated steel material comprising a base steel material and multiple plating layers formed on the base steel material, wherein each of the multiple plating layers includes one of a Zn plating layer, a Mg plating layer, and a Zn—Mg alloy plating layer, and the ratio of the weight of Mg contained in the multiple plating layers to the total weight of the multiple plating layers is from 0.13 to 0.24. 1. A multilayer zinc alloy plated steel material comprising:a base steel material having a thickness; andmultiple plating layers formed on the base steel material,wherein a ratio of a total Mg content in the multiple plating layers to a total weight of the multiple plating layers is from 0.13 to 0.24,wherein the multiple plating layers comprise a first plating layer formed on the base steel material and a second plating layer formed on the first plating layer, the first plating layer comprises a Zn—Mg alloy phase, and the second plating layer comprises a Zn single phase or a Zn single phase and a Zn—Mg alloy phase and has a Mg content within a range of 2 wt % or less.2. The multilayer zinc alloy plated steel material of claim 1 , wherein claim 1 , when a GDS profile is measured at a thicknesswise center portion of the each of the multiple plating layers claim 1 , a Mg content in the each of the multiple plating layers deviates within a range of ±5%.3. The multilayer zinc alloy plated steel material of claim 1 , wherein grains of the multiple plating layers have an average diameter of 100 nm or less (excluding 0 nm).4. The multilayer zinc alloy plated steel material of claim 1 , wherein a total plating amount of the multiple plating layers is 40 g/mor less (excluding 0 g/m).5. The multilayer zinc alloy plated steel material of claim 1 , wherein claim 1 , when spot welding is performed on the multilayer zinc alloy plated steel material claim 1 , the multiple plating layers are configured to be changed to a single alloy layer in a weld zone ...

Galvanically-Active In Situ Formed Particles for Controlled Rate Dissolving Tools

A tastable, moldable, and/or extrudable structure using a metallic primary alloy. One or more additives are added to the metallic primary alloy so that in situ galvanically-active reinforcement particles are formed in the melt or on cooling from the melt. The composite contains an optimal composition and morphology to achieve a specific galvanic corrosion rate in the entire composite. The in situ formed galvanically-active particles can be used to enhance mechanical properties of the composite, such as ductility and/or tensile strength. The final casting can also be enhanced by heat treatment, as well as deformation processing such as extrusion, forging, or rolling, to further improve the strength of the final composite over the as-cast material. 1. A method of controlling the dissolution properties of a magnesium or a magnesium alloy comprising of the steps of:heating the magnesium or a magnesium alloy to a point above its solidus temperature;adding an additive to said magnesium or magnesium alloy while said magnesium or magnesium alloy is above said solidus temperature of magnesium or magnesium alloy to form a mixture, said additive including one or more first additives having an electronegativity of greater than 1.5, said additive constituting about 0.05-45 wt. % of said mixture;dispersing said additive in said mixture while said magnesium or magnesium alloy is above said solidus temperature of magnesium or magnesium alloy; and,cooling said mixture to form a magnesium composite, said magnesium composite including in situ precipitation of galvanically-active intermetallic phases.2. The method as defined in claim 1 , wherein said first additive has an electronegativity of greater than 1.8.3. The method as defined in claim 1 , wherein said magnesium or magnesium alloy is heated to a temperature that is less than said melting point temperature of at least one of said additives.4. The method as defined in claim 1 , wherein said additive includes one or more metals ...

ALUMINUM-FREE MAGNESIUM ALLOY

The aluminum-tree magnesium alloy has a composition of at least 87.5 wt. % magnesium, produced by adding 0.5 to 2.0 wt. % cerium, 0.2 to 2.0 wt. % lanthanum, 0 to 5 wt. % of at least one further metal from the group of the rare earths, 1.5 to 3.0 wt. % of a manganese compound, and 0 to 0.5 wt. % of a phosphorus compound. 1. An aluminum-free magnesium alloy comprising at least 84.5 wt. % magnesium , 0.4 to 4.0 wt. % cerium , 0.2 to 2.0 wt. % lanthanum , 0 to 5 wt. % of at least one rare earth metal , 1.5 to 3.0 wt. % of a manganese compound , and 0 to 1.5 wt. % of a phosphorus compound.2. The aluminum-free magnesium alloy according to claim 1 , wherein scandium is the rare earth metal.3. The aluminum-free magnesium compound according to claim 1 , wherein the manganese compound is a manganese (II claim 1 , III) oxide.4. The aluminum-free magnesium compound according to claim 1 , wherein the manganese compound is a manganese (II) chloride.5. The aluminum-free magnesium compound according to claim 1 , wherein the manganese compound is a manganese phosphate having an iron content of less than 0.01 wt. %.6. The aluminum-free magnesium alloy according to claim 1 , wherein the manganese compound is a manganite.7. The aluminum-free magnesium alloy according to claim 1 , wherein the phosphorus compound is a monazite.8. The aluminum-free magnesium alloy according to claim 1 , wherein the phosphorus compound is a manganese phosphate.9. The aluminum-free magnesium alloy according to claim 1 , wherein the phosphorus compound is a magnesium phosphate.10. The aluminum-free magnesium alloy according to in the form of profiled extruded or diecast sections.11. The aluminum-free magnesium alloy according to in the form of drawn welding wires. The invention an aluminum-free magnesium alloy and to the use for producing extruded, continuously cast or diecast semi-finished products or components and metal sheets.Magnesium alloys are lightweight construction materials that, compared to ...

PSEUDOELASTIC MAGNESIUM ALLOY, PSEUDOELASTIC MAGNESIUM ALLOY COMPONENT, AND PRODUCTION METHOD THEREOF

A pseudoelastic magnesium alloy contains magnesium as the main component thereof, and at least one element selected from Sc, Y, La, Ce, Pr, Nd, Pm, Sm, Eu, Gd, Tb, Dy, Ho, Er, Tm, Yb, and Lu, wherein the pseudoelastic magnesium alloy has a unidirectional crystal structure. 1. A pseudoelastic magnesium alloy comprising:magnesium as a main component of the pseudoelastic magnesium alloy; andat least one element selected from Sc, Y, La, Ce, Pr, Nd, Pm, Sm, Eu, Gd, Tb, Dy, Ho, Er, Tm, Yb, and Lu, whereinthe pseudoelastic magnesium alloy has a unidirectional crystal structure.2. The pseudoelastic magnesium alloy according to claim 1 , whereinthe unidirectional crystal structure is a single crystal.3. The pseudoelastic magnesium alloy according to claim 1 , whereinthe unidirectional crystal structure is a crystal texture.4. The pseudoelastic magnesium alloy according to claim 1 , whereinthe pseudoelastic magnesium alloy contains 1.0 to 6.0 atom % of Y, and a remainder is magnesium and unavoidable impurities.5. The pseudoelastic magnesium alloy according to claim 1 , whereina matrix of the pseudoelastic magnesium alloy contains 1.0 to 3.4 atom % of Y, anda remainder is magnesium and unavoidable impurities.6. A pseudoelastic magnesium alloy component comprising{'claim-ref': {'@idref': 'CLM-00001', 'claim 1'}, 'the pseudoelastic magnesium alloy according to , wherein'}a direction of applied compression stress to a finished component is a direction having an angle of 10° or less in a direction of a c-axis from a <10-10> direction of a hexagonal magnesium crystal constituting the pseudoelastic magnesium alloy.7. A production method of a pseudoelastic magnesium alloy component claim 1 , comprising{'claim-ref': {'@idref': 'CLM-00001', 'claim 1'}, 'fabricating the pseudoelastic magnesium alloy according to such that a direction of applied compression stress to a finished component is a direction having an angle of 10° or less in a direction of a c-axis from a <10-10> direction of ...

METAL DEPOSITION USING ORGANIC VAPOR PHASE DEPOSITION (VPD) SYSTEM

A method of depositing a film of a metal having a volatilization temperature higher than 350° C., as well as, a composite material including the same are disclosed. The method can include providing the source material in a vacuum deposition processing chamber, and providing a substrate in the vacuum deposition processing chamber. The substrate can be spaced apart from, but in fluid communication with, the source material, and also maintained at a substrate temperature that is lower than the volatilization temperature. The method can also include reducing an internal pressure of the vacuum deposition processing chamber to a pressure between 0.1 and 14,000 pascals; volatilizing the source material into a volatilized metal by heating the source material to a first temperature that is higher than the volatilization temperature; and transporting the volatilized metal to the substrate using a heated carrier gas, whereby the volatilized metal deposits on the substrate and forms the metal film. 1. A method of depositing a film of a metallic material having a volatilization temperature higher than 350° C. from a source material , comprising:providing the source material in a vacuum deposition processing chamber, the vacuum deposition processing chamber having an internal pressure;providing a substrate in the vacuum deposition processing chamber, the substrate being maintained at a substrate temperature that is lower than the volatilization temperature and being spaced apart from, but in fluid communication with, said source material;reducing an internal pressure of the vacuum deposition processing chamber to a pressure between 0.1 and 14,000 pascals;volatilizing the source material into a volatilized metal by heating the source material to a first temperature that is higher than the volatilization temperature; andtransporting said volatilized metal to said substrate using a heated carrier gas, whereby the volatilized metal deposits on the substrate and forms said film.2. The ...

METHOD FOR THE ECONOMIC MANUFACTURE OF LIGHT COMPONENTS

The present invention relates to a method for the economic production of light structural components with high flexibility in the geometry attainable. It also relates to the material required for the manufacturing of those parts. The method of the present invention allows a very fast manufacturing of the parts. The method of the present invention also allows the economic manufacturing of components with intricate internal geometries (such as for example cooling or heating circuits). 2. (canceled)3. The alloy according to claim 1 , wherein:% Se+% Te+% As+% Sb is 0.05% by weight or more.4. The alloy according to claim 1 , wherein:% Bi+% Ga+% Cd+% In+% Sn+% Cs+% Rb is 0.05% by weight or more5. The alloy according to claim 1 , wherein:% Ca+% Al is 0.6% by weight or more.6. The alloy according to claim 1 , wherein:% Nd+% Gd+% La+% Y+% Be+% Sc is 0.5% by weight or more.7. The alloy according to claim 1 , wherein:% Al is above 36% by weight.8. A material comprising an organic part having at least one component and an inorganic part having at least one component claim 1 , wherein a component of the organic part has a deflection temperature measured according to ASTM D648-07 test with a load of 0.46 MPa (66 psi) that is higher than 0.45 times the melting temperature of a relevant component of the inorganic part of the material claim 1 , wherein the inorganic part of the material comprises an alloy according to .9. (canceled)10. (canceled)11. The material according to claim 8 , wherein the relevant component is at least 0.6% by weight in respect of the weight of the material.12. The material according to claim 8 , wherein the inorganic part of the material is at least 52% by weight in respect of the weight of the material.13. (canceled)14. The material according to claim 8 , wherein the inorganic part comprises a metallic phase comprising at least 16% by weight % Li in respect of the weight of such metallic phase.15. The material according to claim 8 , wherein the inorganic ...

METHOD FOR MANUFACTURING MAGNESIUM-BASED THERMOELECTRIC CONVERSION MATERIAL, METHOD FOR MANUFACTURING MAGNESIUM-BASED THERMOELECTRIC CONVERSION ELEMENT, MAGNESIUM-BASED THERMOELECTRIC CONVERSION MATERIAL, MAGNESIUM-BASED THERMOELECTRIC CONVERSION ELEMENT, AND THERMOELECTRIC CONVERSION DEVICE

A method for manufacturing a magnesium-based thermoelectric conversion material of the present invention includes a raw material-forming step of forming a raw material for sintering by adding silicon oxide in an amount within a range equal to or greater than 0.5 mol % and equal to or smaller than 13.0 mol % to a magnesium-based compound, and a sintering step of heating the raw material for sintering at a temperature within a range equal to or higher than 750° C. and equal to or lower than 950° C. while applying pressure equal to or higher than 10 MPa to the raw material for sintering so as to form a sintered substance. 1. A method for manufacturing a magnesium-based thermoelectric conversion material , comprising:a raw material-forming step of forming a raw material for sintering by adding silicon oxide in an amount within a range equal to or greater than 0.5 mol % and equal to or smaller than 13.0 mol % to a magnesium-based compound; anda sintering step of heating the raw material for sintering at a temperature within a range equal to or higher than 750° C. and equal to or lower than 950° C. while applying pressure equal to or higher than 10 MPa to the raw material for sintering so as to form a sintered substance.2. The method for manufacturing a magnesium-based thermoelectric conversion material according to claim 1 ,{'sub': x', 'y', '2', '1-x', 'x', '2', '1-x', 'x, 'wherein the magnesium-based compound is any one of MgSi, MgSiGe, and MgSiSn.'}3. The method for manufacturing a magnesium-based thermoelectric conversion material according to claim 1 ,wherein the raw material for sintering further contains, as a dopant, at least one kind of element among Li, Na, K, B, Al, Ga, In, N, P, As, Sb, Bi, Ag, Cu, and Y.4. The method for manufacturing a magnesium-based thermoelectric conversion material according to claim 1 ,wherein the sintering step is performed by any of a hot pressing method, a hot isostatic pressing method, a discharge plasma sintering method, an ...

Magnesium-based alloy and use of same in the production of electrodes and the electrochemical synthesis of struvite

A novel magnesium-based alloy is described. The alloy is particularly suitable for the construction of electrodes, especially anodes, that can be used for an electrochemical process, such as the synthesis of struvite. The magnesium-based alloy is an AZXY alloy in which A is aluminium and Z is zinc, X represents the content, expressed in wt. %, of the first element, and Y the content, expressed in wt. %, of the second element. The AZXY alloy according to the invention has 2%≤X≤4% and 0.5%≤Y≤2%, and an iron (Fe) content of less than 0.005%, and preferably less than 0.003%. The anodes constituted by this novel alloy have a much slower corrosion speed and improved performances compared to existing anodes. An electrode cartridge comprising said alloy and suitable for being inserted into an electrolytic reactor so as to form, once assembled, an electrocoagulation unit, is also described.

Thixotropic Processing of Magnesium Composites with a Nanoparticles-Haloed Grain Structure for Biomedical Implant Applications

In described embodiments, the present invention includes a magnesium-based composite material formed from a plurality of α-phase magnesium grains; and a β-alloy phase comprising magnesium and nano-diamond and/or and phosphate containing nanoparticles, the β-alloy phase surrounding each of the plurality of magnesium grains. A method of manufacturing a composite material is also disclosed. 1. A magnesium-based composite material comprising:a plurality of α-phase magnesium grains; anda β-alloy phase comprising magnesium and particles selected from the group consisting of nano-diamond particles, nano-phosphate particles, and a combination of nano-diamond particles and nano-phosphate particles, the β-alloy phase surrounding each of the plurality of magnesium grains.2. The composite material according to claim 1 , wherein nano-diamond particles comprise a functionalized nano-diamond.3. The composite material according to claim 2 , wherein the functionalized nano-diamond is formed from a functional group selected from the group consisting of hydroxyl group claim 2 , a carboxyl group claim 2 , a carbonyl group claim 2 , and a combination thereof.4. The composite material according claim 2 , wherein each of the functionalized nano-diamonds has a size range between about 2 nm and about 10 nm.5. The composite material according to claim 1 , wherein the nano-phosphate particles are selected from the group consisting of calcium phosphate claim 1 , hydroxyapatite claim 1 , tri-calcium phosphate claim 1 , and calcium hydrogen phosphate.6. The composite material according claim 5 , wherein each of the nano-phosphate particles has a size range between about 20 nm and about 300 nm.7. The composite material according claim 1 , wherein the β-alloy phase forms a halo around each of the plurality of magnesium grains.8. The composite material according to claim 1 , comprising between about 1 percent and about 30% by weight of the β-alloy phase comprising magnesium and particles selected ...

AN IN-SITU MAGNESIUM HYDROXIDE NANOSHEET LAYER MODIFIED MAGNESIUM ALLOY AND PREPARATION AND APPLICATION THEREOF

The present invention relates to a magnesium alloy material, which is an in situ magnesium hydroxide nanosheet layer modified magnesium alloy. The material is prepared from a magnesium alloy through a hydrothermal reaction under alkaline condition. The protective effect of the in situ formed magnesium hydroxide nanosheet layer structure results in remarkably enhanced corrosion resistance of the magnesium alloy, meanwhile the biocompatibility can also be significantly improved since the release rate of magnesium ion can be significantly reduced. In addition, the two-dimensional nanolayer structure has a non-releasing physical antibacterial property depending on contact. Therefore, the magnesium alloy material according to the present invention has an extremely great application prospect in the field of medical implant. 1. A magnesium alloy material , wherein it comprises a magnesium alloy body and a magnesium hydroxide nanosheet layer on the surface; the magnesium hydroxide nanosheet in the magnesium hydroxide nanosheet layer has an area between 1 nm2 and 10 μm2 and a thickness between 1 nm and 2 μm.2. The magnesium alloy material according to claim 1 , wherein the magnesium hydroxide nanosheet has an area between 50 nm2 and 5 μm2 and a thickness between 5 nm and 1 μm.3. The magnesium alloy material according to claim 1 , wherein the magnesium alloy body is a magnesium alloy having a magnesium content greater than 85%; preferably a magnesium content greater than 90%; and most preferably greater than 92%.4. A preparation method of a magnesium alloy material claim 1 , wherein it comprises the step of conducting a hydrothermal reaction of a magnesium alloy under an alkaline condition to form a magnesium hydroxide nanosheet layer in situ.5. The preparation method according to claim 4 , wherein the temperature of the hydrothermal reaction is from 60 to 200° C.; and the reaction time is more than 30 minutes.6. The preparation method according to claim 5 , wherein the ...

BIORESORBABLE METAL ALLOY AND IMPLANTS MADE OF SAME

Disclosed herein is a non-toxic, bioresorbable, magnesium based alloy for use in production of implants. Specifically exemplified herein are alloy embodiments useful for orthopedic implants. Also disclosed are alloy materials that incorporate magnesium, calcium and strontium. 1. A bioresorbable , non-toxic , osteogenic magnesium alloy , said alloy comprising , by weight percentage:0.3 to 10 percent calcium;0.3 to 10 percent strontium; and50 to 99.5 percent magnesium.2. The alloy of claim 1 , wherein said percent of calcium is 1 to 7 wt percent.3. The alloy of claim 1 , wherein said percent of strontium is 1 to 7 wt percent.4. The alloy of claim 1 , wherein said percent of magnesium is 80 to 99 wt percent.5. A non-toxic claim 1 , non-immunoreactive orthopedic implant comprised of the alloy of .6. The implant of claim 5 , wherein said alloy comprises at least 50 percent total weight of said implant.7. The implant of fashioned for insertion into a spine of a subject in need.8. The implant of claim 7 , wherein said implant is a cage claim 7 , dowel or wedge.9. The implant of claim 5 , wherein said implant is a rod claim 5 , screw claim 5 , pin or plate.10. A method of performing an orthopedic surgery claim 5 , said surgery comprising inserting the implant of into a subject in need.11. An implant for use in orthopedic surgery claim 5 , said implant comprising an alloy consisting essentially of magnesium claim 5 , calcium and strontium.12. The alloy of claim 1 , substantially free from aluminum claim 1 , manganese claim 1 , zirconium and/or zinc.13. A dental implant comprised of the alloy of .14. A method of orthopedic surgery which comprises surgically positioning the implant of against a bone of a subject in need thereof.15. The implant of claim 5 , wherein said implant is a prosthetic femoral hip joint; a prosthetic femoral head; a prosthetic acetabular cup; a prosthetic elbow; a prosthetic knee; a prosthetic shoulder; a prosthetic wrist; a prosthetic ankle; a ...

Artifical aluminum layers for fastening magnesium castings

A self-piercing rivet (SPR) joint includes a top layer including at least one steel material or at least one aluminum material, a middle layer including at least one magnesium material, and a bottom artificial aluminum layer including at least one aluminum material.

MAGNESIUM-BASED WROUGHT ALLOY MATERIAL AND MANUFACTURING METHOD THEREFOR

Adding multiple solute elements could create fracture origin through formation of intermetallic compound due to bonding of added elements. While maintaining microstructure for activating non-basal dislocation movement, additive elements not to create fracture origin, but to promote grain boundary sliding are preferably found from among inexpensive and versatile elements. Provided is Mg-based wrought alloy material including two or more among group consisting of Mn, Zr, Bi, and Sn; and Mg and unavoidable constituents, having excellent room-temperature ductility and characterized by having finer crystal grain size in Mg parent phase during room-temperature deformation and in that mean grain size in matrix thereof is 20 μm or smaller; rate of (σ−σ)/σ(maximum load stress (σ), breaking stress (σ)) in stress-strain curve obtained by tension-compression test of the wrought material is 0.2 or higher; and resistance against breakage shows 200 kJ or higher. 1. A Mg-based alloy wrought material comprising: Mg-A mol % X-B mol % Z wherein a remainder comprises Mg and unavoidable impurities ,wherein X is any one kind of element from Mn, Bi, and Sn,wherein Z is one or more kinds of elements from Mn, Bi, Sn, and Zr, but does not overlap the element of X,wherein a value of A is at least 0.03 mol % and not exceeding 1 mol %,wherein, with respect to a relationship of A and B, A≥B and an upper limit of B is not exceeding 1.0 times as large as an upper limit of A and a lower limit of B is at least 0.03 mol %, andwherein an average crystal grain size of the Mg-based alloy wrought material is not exceeding 20 micrometer.2. The Mg-based alloy wrought material according to claim 1 , wherein intermetallic compound particles constituted of Mg and an added element and having an average diameter of not exceeding 0.5 micrometer exist in Mg mother phase and/or crystal grain boundaries of a metallographic structure of the Mg-based alloy wrought material.3. The Mg-based alloy wrought material ...

MAGNESIUM ALLOY, MAGNESIUM ALLOY MEMBER AND METHOD FOR MANUFACTURING SAME, AND METHOD FOR USING MAGNESIUM ALLOY

A magnesium alloy of the present invention has the chemical composition that contains 0.02 mol % or more and less than 0.1 mol % of at least one element selected from yttrium, scandium, and lanthanoid rare earth elements, and magnesium and unavoidable impurities accounting for the remainder. A magnesium alloy member of the present invention is produced by hot plastic working of the magnesium alloy in a temperature range of 200° C. to 550° C., followed by an isothermal heat treatment performed in a temperature range of 300° C. to 600° C. The magnesium alloy is preferred for use in applications such as in automobiles, railcars, and aerospace flying objects. The magnesium alloy and the magnesium alloy member can overcome the yielding stress anisotropy problem, and are less vulnerable to the rising price of rare earth elements. 1. A magnesium alloy comprising 0.02 mol % or more and less than 0.1 mol % of at least one element selected from yttrium , scandium , and lanthanoid rare earth elements , and Mg and unavoidable impurities accounting for the remainder.2. A magnesium alloy member comprising the magnesium alloy of the chemical composition of claim 1 , wherein the crystal structure of the member is an equiaxial grain structure with no texture.3. (canceled)4. The magnesium alloy member according to claim 2 , wherein the average grain size is 10 μm or more.5. The magnesium alloy member according to claim 2 , wherein a compressional nominal strain of 0.4 or more is applied by cold working performed in a temperature range of from room temperature to 150° C.6. The magnesium alloy member according to claim 2 , wherein the average grain size of the magnesium alloy after cold working performed in a temperature range of from room temperature to 150° C. is 80% or less of the average grain size of an unworked magnesium alloy.7. The magnesium alloy member according to claim 2 , wherein the strength and hardness of the member after applying nominal strain by cold working ...

WROUGHT PROCESSED MAGNESIUM-BASED ALLOY AND METHOD FOR PRODUCING SAME

In order to improve the ductility or formability of a magnesium alloy, addition of rare earth elements or refinement of grain size is often used. However, conventional additional elements inhibit the action of grain boundary sliding for complementing plastic deformation. Therefore, it is required to search for additional elements that act to facilitate the grain boundary sliding not only at a conventional deformation speed but also in a higher speed range while maintaining a microstructure for activating non-basal dislocation. The present invention is to provide a wrought processed Mg-based alloy having excellent ductility at room temperature, which consists of 0.25 mass % or more to 9 mass % or less of Bi, and a balance of Mg and inevitable components, and is characterized by having an average grain size of an Mg parent phase after solution treatment and hot plastic working after casting of 20 μm or less. 1. A wrought processed Mg-based alloy having excellent ductility at room temperature , consisting of: 0.25 mass % or more to 9 mass % or less of Bi , and a balance of Mg and inevitable components , wherein an average grain size of an Mg parent phase after solution treatment and hot plastic working after casting is 20 μm or less.2. The wrought processed Mg-based alloy according to claim 1 , wherein in at least one of the Mg parent phase and a grain boundary in a metal structure of the wrought processed Mg-based alloy claim 1 , Mg—Bi intermetallic compound particles having a particle diameter of 0.5 μm or less are precipitated while mutually dispersing.3. The wrought processed Mg-based alloy according to claim 1 , wherein a strain rate sensitivity exponent (m value) in a tensile test or a compression test of the wrought processed Mg-based alloy at room temperature shows 0.1 or more.4. The wrought processed Mg-based alloy according to claim 1 , wherein in a stress-strain curve obtained by a compression test of the wrought processed Mg-based alloy at room temperature ...

BIORESORBABLE METAL ALLOY AND IMPLANTS MADE OF SAME

Disclosed herein is a non-toxic, bioresorbable, magnesium based alloy for use in production of implants. Specifically exemplified herein are alloy embodiments useful for orthopedic implants. Also disclosed are alloy materials that incorporate magnesium, calcium and strontium. 1. A bioresorbable , non-toxic , osteogenic magnesium alloy , said alloy comprising , by weight percentage:0.3 to 10 percent calcium;0.3 to 10 percent strontium; and50 to 99.5 percent magnesium.2. The alloy of claim 1 , wherein said percent of calcium is 1 to 7 wt percent.3. The alloy of claim 1 , wherein said percent of strontium is 1 to 7 wt percent.4. The alloy of claim 1 , wherein said percent of magnesium is 80 to 99 wt percent.5. A non-toxic claim 1 , non-immunoreactive orthopedic implant comprised of the alloy of .6. The implant of claim 5 , wherein said alloy comprises at least 50 percent total weight of said implant.7. The implant of fashioned for insertion into a spine of a subject in need.8. The implant of claim 7 , wherein said implant is a cage claim 7 , dowel or wedge.9. The implant of claim 5 , wherein said implant is a rod claim 5 , screw claim 5 , pin or plate.10. A method of performing an orthopedic surgery claim 5 , said surgery comprising inserting the implant of into a subject in need.11. An implant for use in orthopedic surgery claim 5 , said implant comprising an alloy consisting essentially of magnesium claim 5 , calcium and strontium.12. The alloy of claim 1 , substantially free from aluminum claim 1 , manganese claim 1 , zirconium and/or zinc.13. A dental implant comprised of the alloy of .14. A method of orthopedic surgery which comprises surgically positioning the implant of against a bone of a subject in need thereof.15. The implant of claim 5 , wherein said implant is a prosthetic femoral hip joint; a prosthetic femoral head; a prosthetic acetabular cup; a prosthetic elbow; a prosthetic knee; a prosthetic shoulder; a prosthetic wrist; a prosthetic ankle; a ...

MAGNESIUM ALLOYS HAVING LONG-PERIOD STACKING ORDER PHASES

Magnesium alloys comprising a long period stacking order (LPSO) phase having an 14H-i or an 18R-i structure are provided. The alloys comprise magnesium as a majority element, a first alloying element that is larger than magnesium and a second alloying element that is smaller than magnesium. The first alloying elements include non-rare earth elements. 1. A magnesium alloy comprising a long period stacking order structural phase having a 14H-i structure with a MgXXcomposition or having a 18R-i structure with a MgXXcomposition ,{'sup': L', 'S, 'wherein Xcomprises a non-rare earth alloying element selected from Ca, Th, Sr and Pa and Xcomprises a second alloying element selected from Zn, Al, Cu, Ni and Co, and'}{'sup': L', 'S', 'L', 'S', 'L', 'S, 'further wherein if Xis Ca, Xis Zn, Al or Cu; if Xis Sr, Xis Zn; and if Xis Pa, Xis Co.'}2. The alloy of claim 1 , wherein Xis Ca and Xis selected from Al claim 1 , Zn and Cu.3. The alloy of claim 2 , wherein Xis Ca and Xis Zn.4. The alloy of claim 1 , wherein Xis Sr and Xis Zn.5. The alloy of claim 1 , wherein Xis Pa and Xis Co.6. The alloy of claim 1 , wherein Xis Th and Xis selected from Zn claim 1 , Cu claim 1 , Ni and Co.7. The alloy of claim 1 , wherein the alloy is free of rare earth elements.8. The alloy of claim 1 , wherein the alloy comprises a third alloying element comprising a rare earth element.9. A magnesium alloy comprising a long period stacking order structural phase having a 14H-i structure with a MgXXcomposition or having a 18R-i structure with a MgXXcomposition claim 1 ,{'sup': L', 'S, 'wherein Xcomprises a rare earth alloying element selected from Sc, Y, La, Ce, Pr, Nd, Pm, Sm, Eu, Gd, Tb, Dy, Ho, Er, Tm, Yb and Lu and Xcomprises a second alloying element selected from Al, Zn, Cu, Ni, and Co, and'}{'sup': S', 'L', 'S', 'L', 'S', 'L', 'S', 'L', 'S', 'L, 'further wherein if Xis Al, Xis not Gd; if is Xis Zn, Xis not Y, Gd, Tb, Dy, Ho, Er, or Tm; if Xis Cu, Xis not Y, La, Ce, Gd, Tb, Dy, Ho, Er, or Tm; if Xis ...

MAGNESIUM ALLOY AND PRODUCTION METHOD OF THE SAME

To provide a magnesium alloy having high incombustibility, high strength and high ductility together. A magnesium alloy including Ca in an amount of “a” atomic %, Al in an amount of “b” atomic % and a residue of Mg, including (Mg, Al)Ca in an amount of “c” volume %, wherein “a”, “b” and “c” satisfy the following equations (1) to (4), and having the (Mg, Al)Ca dispersed therein. 1. A magnesium alloy:comprising Ca in an amount of “a” atomic %, Al in an amount of “b” atomic % and a residue of Mg,{'sub': '2', 'comprising (Mg, Al)Ca in an amount of “c” volume %,'}wherein “a”, “b” and “c” satisfy the following equations (1) to (4), and{'sub': '2', 'claim-text': [{'br': None, 'i': 'A≦', '3≦7\u2003\u2003(1)'}, {'br': None, 'i': 'B≦', '4.5≦12\u2003\u2003(2)'}, {'br': None, 'i': 'B/A≦', '1.2≦3.0\u2003\u2003(3)'}, {'br': None, 'i': 'C≦', '10≦35\u2003\u2003(4)'}], 'having said (Mg, Al)Ca dispersed therein.'}2. A magnesium alloy:comprising Ca in an amount of “a” atomic %, Al in an amount of “b” atomic % and a residue of Mg,{'sub': '2', 'comprising (Mg, Al)Ca in an amount of “c” volume %,'}wherein “a”, “b” and “c” satisfy the following equations (1) to (4), and{'sub': '2', 'claim-text': [{'br': None, 'i': 'a≦', '3≦7\u2003\u2003(1)'}, {'br': None, 'i': 'b≦', '8≦12\u2003\u2003(2)'}, {'br': None, 'i': 'b/a≦', '1.2≦3.0\u2003\u2003(3)'}, {'br': None, 'i': 'c≦', '10≦35\u2003\u2003(4)'}], 'having said (Mg, Al)Ca dispersed therein.'}3. The magnesium alloy according to claim 1 , wherein said magnesium alloy further comprises Zn in an amount of “x” atomic % claim 1 , wherein “x” satisfies the following equation (20).{'br': None, 'i': ' Подробнее

DISINTEGRATABLE CARBON COMPOSITES, METHODS OF MANUFACTURE, AND USES THEREOF

A carbon composite is disclosed, including a plurality of carbon grains, wherein each of the plurality of carbon grains includes a plurality of pores, and a binder disposed between the plurality of carbon grains to bond the plurality of carbon grains, wherein the binder is a disintegrable binder. 1. A carbon composite comprising:a plurality of carbon grains, wherein each of the plurality of carbon grains includes a plurality of pores; anda binder disposed between the plurality of carbon grains to bond the plurality of carbon grains, wherein the binder is a disintegrable binder.2. The carbon composite of claim 1 , wherein the carbon comprises amorphous carbon claim 1 , natural graphite claim 1 , carbon fiber claim 1 , or a combination comprising at least one of the foregoing material.3. The carbon composite of claim 1 , wherein the plurality of carbon grains are a plurality of graphite grains.4. The carbon composite of claim 3 , wherein each of the plurality of graphite grains are between 5 to 500 micrometers in diameter.5. The carbon composite of claim 3 , wherein each of the plurality of graphite grains between are 0.01 to 500 micrometers in thickness.6. The carbon composite of claim 1 , wherein the binder is an ester polymer.7. The carbon composite of claim 1 , wherein the binder is an amide polymer.8. The carbon composite of claim 1 , wherein the binder is an ether polymer.9. The carbon composite of claim 1 , wherein the binder is polyurethane.10. The carbon composite of claim 1 , wherein the binder is between 10 to 90 percent of the carbon composite by volume.11. The carbon composite of claim 1 , wherein the binder is a magnesium alloy with a nickel catalyst.12. The carbon composite of claim 11 , wherein the binder is a controlled electrolytic metallic material.13. The carbon composite of claim 12 , wherein the binder is at least one of a magnesium alloy claim 12 , a magnesium silicon alloy claim 12 , a magnesium aluminum alloy claim 12 , a magnesium zinc alloy ...

MAGNESIUM ION BATTERIES AND MAGNESIUM ELECTRODES EMPLOYING MAGNESIUM NANOPARTICLES SYNTHESIZED VIA A NOVEL REAGENT

Electrodes employing as active material magnesium nanoparticles synthesized by a novel route are provided. The nanoparticle synthesis is facile and reproducible, and provides magnesium nanoparticles of very small dimension and high purity for a wide range of metals. The electrodes utilizing these nanoparticles thus may have superior capability. Magnesium ion electrochemical cells employing said electrodes are also provided. 2. The electrode of wherein the reagent complex is obtained by a process that includes a step of:ball milling a mixture that includes a hydride and a preparation composed of magnesium.3. The electrode of wherein the hydride is lithium borohydride.4. The electrode of wherein the magnesium nanoparticles have an average maximum dimension less than 100 nm.5. The electrode of wherein the magnesium nanoparticles have an average maximum dimension less than 10 nm.6. The electrode of wherein the magnesium nanoparticles have an average maximum dimension less than 5 nm.8. The electrochemical cell of wherein the magnesium nanoparticles have an average maximum dimension less than about 10 nm.9. The electrochemical cell of wherein the metal nanoparticles have an average maximum dimension less than about 5 nm.10. The electrochemical cell of wherein the metal nanoparticles have an average maximum dimension of about 10 nm or less.11. The electrochemical cell of which is a Mg-ion electrochemical cell.12. The electrochemical cell of having an operative electrochemical reaction:{'br': None, 'sup': 2+', '−, 'img': {'@id': 'CUSTOM-CHARACTER-00002', '@he': '2.46mm', '@wi': '2.12mm', '@file': 'US20150099135A1-20150409-P00001.TIF', '@alt': 'custom-character', '@img-content': 'character', '@img-format': 'tif'}, 'Mg+2eMg.'} This application is a continuation-in-part of application Ser. Nos. 14/046,081 and 14/046,120, filed 4 Oct. 2013, a continuation-in-part of application Ser. No. 14/219,836, filed 19 Mar. 2014, a continuation-in-part of application Ser. No. 14/269,895, ...

BIORESORBABLE METAL ALLOY AND IMPLANTS

Embodiments of the present disclosure provide for structures including an alloy of calcium, strontium, and magnesium. 1. A structure comprising an alloy having:about 0.3 to 2 weight percent calcium;about 0.3 to 2 weight percent strontium; andabout 96 to 99.4 weight percent magnesium.2. The structure of claim 1 , wherein the weight percent of calcium is about 1.5 to 2 weight percent claim 1 , wherein the weight percent of strontium is about 1.5 to 2 weight percent claim 1 , and wherein the weight percent of magnesium is about 96 to 97 weight percent.3. The structure of claim 1 , wherein the weight percent of calcium is about 0.6 to 1.5 weight percent claim 1 , wherein the weight percent of strontium is about 0.6 to 1.5 weight percent claim 1 , and wherein the weight percent of magnesium is about 97 to 98.8 weight percent.4. The structure of claim 1 , wherein the alloy is a bioresorbable claim 1 , non-toxic claim 1 , osteogenic magnesium alloy.5. The structure of claim 1 , wherein the structure is a non-toxic claim 1 , non-immunoreactive orthopedic implant.6. The structure of claim 5 , wherein the alloy comprises at least 50 percent total weight of the structure.7. The structure of claim 5 , wherein the structure is a spinal implant.8. The structure of claim 7 , wherein the spinal implant is a cage claim 7 , dowel or wedge.9. The structure of claim 7 , wherein the spinal implant is a rod claim 7 , screw claim 7 , pin or plate.11. The structure of claim 1 , wherein the alloy is substantially free from aluminum claim 1 , manganese claim 1 , zirconium claim 1 , zinc claim 1 , or a combination thereof.12. The structure of claim 1 , wherein the structure is a dental implant.13. The structure of claim 1 , wherein the structure is selected from the group consisting of: cannulated screw for femoral head fixation claim 1 , fracture fixation screw and plate system for use in various extremity locations claim 1 , suture anchor claim 1 , interference screw claim 1 , surgical clip ...

METHOD FOR PRODUCING POROUS MEMBER

A method for producing a porous member, whereby a member having smaller microgaps can be produced, and additionally, the outermost surface alone can be made porous and a porous layer can be formed on the surface while maintaining the characteristics of portions in which no porous layer is formed, is provided. 1. A method for producing a porous member , which comprises:bringing a solid metal body comprising a first component into contact with a solid metal material comprising a compound, an alloy or a non-equilibrium alloy that simultaneously contains a second component and a third component having a positive heat of mixing and a negative heat of mixing, respectively, relative to the first component;performing heat treatment at a predetermined temperature for a predetermined length of time to diffuse the first component to the metal material side, and the third component to the metal body side; andselectively removing a portion other than a portion mainly composed of the second component from a portion in which the first component and/or the third component is diffused, thereby obtaining a member having microgaps.2. The method for producing a porous member according to claim 1 ,wherein the portion mainly composed of the second component is exposed when a portion other than the portion mainly composed of the second component is selectively removed.3. The method for producing a porous member according to claim 1 , wherein the heat treatment is performed after the contact of the metal body with the metal material claim 1 , so that the first component and the third component are interdiffused for binding with each other.4. The method for producing a porous member according to claim 3 , wherein after the heat treatment is performed claim 3 , a compound claim 3 , an alloy or a non-equilibrium alloy formed by binding of the first component with the third component is selectively removed.5. The method for producing a porous member according to claim 1 , wherein after the ...

MAGNESIUM ALLOY MEMBER AND PRODUCTION METHOD THEREFOR

A high-strength magnesium alloy member is suitable for products in which at least one of bending stress and twisting stress primarily acts. The member has required elongation and 0.2% proof stress, whereby strength and formability are superior, and has higher strength and large compressive residual stress in the vicinity of the surface of a wire rod. In the magnesium alloy member formed as a wire rod in which at least one of bending stress and twisting stress primarily acts, the wire rod includes a surface portion having the highest hardness of 170 HV or more in the vicinity of the surface and an inner portion having a 0.2% proof stress of 550 MPa or more and an elongation of 5% or more, and the wire rod has the highest compressive residue stress in the vicinity of the surface of 50 MPa or more. 1. A magnesium alloy member formed as a wire rod , in which at least one of bending stress and twisting stress primarily acts ,wherein the wire rod comprises:a surface portion having the highest hardness of 170 HV or more in the vicinity of the surface; andan inner portion having a 0.2% proof stress of 550 MPa or more and an elongation of 5% or more, andthe wire rod has the highest compressive residue stress in the vicinity of the surface of 50 MPa or more.2. A magnesium alloy member formed as a wire rod , in which at least one of bending stress and twisting stress primarily acts ,wherein the wire rod comprises:a surface portion having the highest hardness of 170 HV or more in the vicinity of a surface thereof; andan inner portion having a 0.2% proof stress of 550 MPa or more and an elongation of 5% or more, and{'sub': '−σR', 'the wire rod has an integrated value Iof compressive residue stress in a region from the surface to a crossing point of 7 MPa·mm or more, when a depth from the surface in which a value of compressive residual stress in residual stress distribution from the surface toward a depth direction is zero is set to be a crossing point.'}3. The magnesium alloy ...

Galvanically-Active In Situ Formed Particles for Controlled Rate Dissolving Tools

A castable, moldable, and/or extrudable structure using a metallic primary alloy. One or more additives are added to the metallic primary alloy so that in situ galvanically-active reinforcement particles are formed in the melt or on cooling from the melt. The composite contains an optimal composition and morphology to achieve a specific galvanic corrosion rate in the entire composite. The in situ formed galvanically-active particles can be used to enhance mechanical properties of the composite, such as ductility and/or tensile strength. The final casting can also he enhanced by heat treatment, as well as deformation processing such as extrusion, forging, or rolling, to further improve the strength of the final composite over the as-cast material. 117-. (canceled)18. A magnesium composite that includes in situ precipitation of galvanically-active intermetallic phases comprising a magnesium or a magnesium alloy and an additive constituting about 0.05-45 wt. % of said magnesium composite , said magnesium having a content in said magnesium composite that is greater than 50 wt. % , said additive forming metal composite particles or precipitant in said magnesium composite , said metal composite particles or precipitant forming said in situ precipitation of said galvanically-active intermetallic phases , said additive including one or more first additives having an electronegativity of greater than 1.5.19. The magnesium composite as defined in claim 18 , further including one or more second additives having an electronegativity of less than 1.25.20. The magnesium composite as defined in claim 18 , wherein said first additive has an electronegativity of greater than 1.8 claim 18 ,2118. The magnesium composite as defined in claim 18 , wherein said first additive includes one or more metals selected from the group consisting of copper claim 18 , nickel claim 18 , cobalt claim 18 , bismuth claim 18 , silver claim 18 , gold claim 18 , lead claim 18 , tin claim 18 , antimony ...

BIODEGRADABLE METAL ALLOYS

The invention relates to biodegradable, metal alloy-containing compositions, methods for their preparation and applications for their use. The compositions include magnesium and other components, such as yttrium, calcium, silver, cerium, and zirconium; or zinc, silver, cerium, and zirconium; or aluminum, zinc, calcium, manganese, silver, yttrium; or strontium, calcium, zinc. The compositions are prepared by vacuum induction/crucible melting together the components and casting the melted mixture in a preheated mild steel/copper mold. In certain embodiments, the compositions of the invention are particularly useful for forming medical devices for implantation into a body of a patient. 1. A biodegradable , metal alloy , consisting of:from about 1.0 weight percent to about 6.0 weight percent of zinc;from greater than zero to about 1.0 weight percent of zirconium;at least one element selected from the group consisting of about 0.25 weight percent to about 1.0 weight percent of silver and about 0.1 weight percent to about 1.0 weight percent of cerium;optionally from about 1.0 weight percent to about 4.0 weight percent of strontium;optionally from about 1.0 weight percent to about 9.0 weight percent of aluminum;optionally from about 0.1 weight percent to about 1.0 weight percent of manganese; anda balance of magnesium and impurities due to production, based on total weight of the metal alloy.2. The biodegradable claim 1 , metal alloy of claim 1 , wherein the silver is present and the cerium is absent.3. The biodegradable claim 1 , metal alloy of claim 1 , wherein the cerium is present and the silver is absent.4. A method of preparing a biodegradable claim 1 , metal alloy comprising: from about 1.0 weight percent to about 6.0 weight percent of zinc;', 'from greater than zero to about 1.0 weight percent of zirconium;', 'at least one compound selected from the group consisting of, from about 0.25 weight percent to about 1.0 weight percent of silver and from about 0.1 weight ...

ALLOY MATERIAL IN WHICH ARE DISPERSED OXYGEN ATOMS AND A METAL ELEMENT OF OXIDE-PARTICLES, AND PRODUCTION METHOD FOR SAME

According to one embodiment of the present invention, a cast alloy material is provided. The cast alloy material includes a matrix metal and an alloy element, wherein oxide particles in a nanometer scale are decomposed in the matrix metal, so that a new phase including a metal element that is a component of the oxide particles and the alloy element forms a band or network structure, wherein the metal element and the alloy element have a relationship of a negative heat of mixing, and wherein oxygen atoms formed by decomposition of the oxide particles are dispersed in the matrix metal and do not form an oxide with the matrix metal. 1. A cast material comprising a matrix metal wherein particles of an oxide are decomposed in the matrix metal , such that a metal element and oxygen atoms , which are components of the oxide , are dispersed in the matrix metal , and the oxygen atoms do not form an oxide with the matrix metal.2. The cast material according to claim 1 , wherein the cast material comprises no particles of the oxide.3. The cast material according to claim 1 , wherein the oxygen atoms of the oxide particles are preferentially dispersed in the matrix metal claim 1 , and the metal element of the oxide particles are subsequently dispersed in the matrix metal claim 1 , thereby mixing with the matrix metal.4. The cast material according to claim 1 , wherein the matrix metal is Mg or a Mg alloy claim 1 , and the oxide particles are particles of at least one oxide selected from among Ti oxides (TiOx) claim 1 , Mn oxides (MnOx) claim 1 , Zr oxides (ZrOx) claim 1 , Cr oxides (CrOx) and Fe oxides (FeOx).5. A method of manufacturing a cast material comprising the steps of:preparing a molten metal of a matrix metal, andinputting oxide particles into the molten metal and decomposing the oxide particles, so that the oxygen atoms that are a component of the oxide particles are primarily dispersed into the matrix metal and the metal element which is a component of the oxide ...

THERMOELECTRIC NANOCOMPOSITE AND PROCESS OF PRODUCING THE SAME

A thermoelectric nanocomposite is provided. The thermoelectric nanocomposite includes: a matrix having n-type semiconductor characteristics and comprising Mg, Si, Al, and Bi components, and a nanoinclusion comprising Bi and Mg components. The thermoelectric nanocomposite has significantly increased thermoelectric energy conversion efficiency by simultaneously having an increased Seebeck coefficient and a decreased thermal conductivity, such that the thermoelectric nanocomposite is usefully used to implement a thermoelectric device having high efficiency. 1. A thermoelectric nanocomposite , comprising:a matrix having n-type semiconductor characteristics; anda nanoinclusion comprising Bi and Mg,wherein the nanoinclusion is embedded in the matrix.2. The thermoelectric nanocomposite according to claim 1 , wherein the nanoinclusion is BiMg claim 1 ,where 0≦z≦0.1.3. The thermoelectric nanocomposite according to claim 1 , wherein the matrix is MgAlSiBi claim 1 ,where 0≦x≦0.04, and 0≦y≦0.04).4. The thermoelectric nanocomposite according to claim 1 , wherein the matrix is MgAlSiBiSn claim 1 ,where 0≦x≦0.04, 0≦y≦0.04, and 0≦w≦0.5.5. The thermoelectric nanocomposite according to claim 1 , wherein the nanoinclusion has an average particle size of about 1 to 500 nm.6. The thermoelectric nanocomposite according to claim 1 , wherein the nanoinclusion is contained at a content of about 0.1 to 4.0 parts by weight based on 100 parts by weight of the matrix.7. The thermoelectric nanocomposite according to claim 6 , wherein the matrix comprises MgAlSiBi claim 6 , and the nanoinclusion comprises BiMg claim 6 , a weight ratio of the nanoinclusion to the matrix being about 2.6%.8. The thermoelectric nanocomposite according to claim 6 , wherein the matrix comprises MgAlSiBi claim 6 , and the nanoinclusion comprises BiMg claim 6 , a weight ratio of the nanoinclusion to the matrix being about 4.0%.9. The thermoelectric nanocomposite according to claim 6 , wherein the matrix comprises ...

METHOD FOR USING A BIODEGRADABLE METAL ALLOY TO ANCHOR DETACHED TISSUE TO HARD TISSUE

A biodegradable metal alloy for anchoring detached tissue to hard tissue, a method for making the same and a process for using the same are revealed. The biodegradable metal alloy includes a magnesium-zinc-zirconium (Mg—Zn—Zr) alloy and a magnesium fluoride (MgF) coating over the Mg—Zn—Zr alloy. The Mg—Zn—Zr alloy is a magnesium alloy containing 2.5-6.0 wt % zinc (Zn) and 0.42-0.80 wt % zirconium (Zr). Thereby the present biodegradable metal alloy not only provides sufficient fixation strength for anchoring detached tissue to hard tissue effectively but also promotes the bone growth and avoids metal/alloy artifacts in images. 1. A process for using a biodegradable metal alloy to anchor detached tissue to hard tissue comprising: inserting a biodegradable metal alloy into a hard tissue with free ends of sutures extending out of the hard tissue , and repairing the detached tissue to the hard tissue by using a Mason-Allen stitch; wherein the biodegradable metal alloy includes a magnesium-zinc-zirconium (Mg—Zn—Zr) alloy and a magnesium fluoride (MgF) coating over the Mg—Zn—Zr alloy; the Mg—Zn—Zr alloy is a magnesium alloy containing 2.5-6.0 wt % zinc (Zn) and 0.42-0.80 wt % zirconium (Zr).2. The process as claimed in claim 1 , wherein the Mg—Zn—Zr alloy is selected from the group consisting of ZK50 claim 1 , ZK30 claim 1 , ZK60 claim 1 , ZK51A-T5 claim 1 , ZK61-T5 claim 1 , ZK61-T6 claim 1 , ZK31-T5 claim 1 , ZK60-T5 claim 1 , ZK61-T5 claim 1 , ZK21A-F claim 1 , ZK31-T5 claim 1 , ZK40A-T5 claim 1 , ZK60A-T5 claim 1 , ZK61 claim 1 , ZK50 claim 1 , ZK60-F claim 1 , ZK60-T4 claim 1 , and ZK60-T6. This Application is being filed as a Divisional Application of patent application Ser. No. 16/211,737, filed 6 Dec. 2018, currently pending.The present invention relates to a biodegradable metal alloy for anchoring detached tissue to hard tissue, a method for making the same and a process for using the same, especially to a biodegradable metal alloy for effectively anchoring ...

MAGNESIUM ALLOY FOR PRECIPITATION STRENGTHENING EXTRUSION AND METHOD OF MANUFACTURING THE SAME

A tin-containing magnesium alloy having superior tensile strength and superior elongation. A method of manufacturing a magnesium alloy includes melting and casting raw materials including an element selected from the group consisting of more than 0 weight % and 14 weight % or less of Sn, more than 0 weight % and 5 weight % or less of Li, more than 0 weight % and 40 weight % or less of Pb, more than 0 weight % and 17 weight % or less of Al, and more than 0 weight % and 5 weight % or less of Zn and a remainder of Mg, subjecting the cast magnesium alloy to solution treatment, subjecting the solution-treated magnesium alloy to aging, and plastically deforming the aged magnesium alloy. The magnesium alloy has second phases uniformly distributed in crystal grains, has a crystal grain size of 10 μm or less, and exhibits both 1. A magnesium alloy comprising:an element selected from the group consisting of more than 0 weight % and 14 weight % or less of Sn, more than 0 weight % and 5 weight % or less of Li, more than 0 weight % and 40 weight % or less of Pb, more than 0 weight % and 17 weight % or less of Al, and more than 0 weight % and 5 weight % or less of Zn; anda remainder of Mg, wherein{'sub': 2', '2', '3', '47.2', '36.9', '16.9', '17', '12', '2, 'a second phase comprising at least one selected from the group consisting of MgSn, MgZn, MgZnAl, MgAl, α-Mg/βLi phase and MgPb is formed in the alloy, the second phase comprises precipitation phases, and, among the precipitation phases constituting the second phase, precipitation phases having a size exceeding 10 μm are less than 0.1% of the entire precipitation phases.'}2. The magnesium alloy of claim 1 , wherein the second phase of the magnesium alloy is uniformly distributed in entire crystal grains.3. The magnesium alloy of claim 1 , wherein the size of crystal grains of the magnesium alloy is substantially evenly distributed.4. The magnesium alloy of claim 3 , wherein the second phase is MgSn phase.5. The magnesium alloy ...

MAGNESIUM-CONTAINING METAL MATERIAL PROVIDED WITH COATING

Provided is a magnesium-containing metal material that includes coatings having excellent corrosion resistance on a surface. Specifically, provided is a magnesium-containing metal material with coating, which is characterized by including: a magnesium hydroxide-containing first coating on a surface of a magnesium-containing metal material composed of magnesium or a magnesium alloy; a hydroxyapatite and/or hydroxyapatite carbonate-containing third coating over the first coating; and a dibasic calcium phosphate-containing second coating between the first coating and the third coating. 1. A magnesium-containing metal material with coating , comprising:a magnesium hydroxide-containing first coating on a surface of a magnesium-containing metal material composed of magnesium or a magnesium alloy;a hydroxyapatite and/or hydroxyapatite carbonate-containing third coating over the first coating; anda dibasic calcium phosphate-containing second coating between the first coating and the third coating.2. The magnesium-containing metal material with coating according to claim 1 , wherein the second coating is a coating containing monetite and/or brushite. The present invention relates to a magnesium material or a magnesium alloy material, on a surface of which coatings having corrosion resistance are formed (hereinafter, the magnesium material, the magnesium alloy material or the like is referred to as “magnesium-containing metal material”).Magnesium-containing metal materials have a low specific gravity and, because of their lightweight nature, it has been examined to apply magnesium-containing metal materials as structural materials of airplanes, automobiles, bicycles, home electric appliances, medical instruments, fishing gears and the like. However, since magnesium-containing metal materials are highly corrosive, it is necessary to improve their corrosion resistance by performing some sort of surface treatment.Conventionally, a variety of methods have been developed as ...

MAGNESIUM ALLOY

The present invention relates to a magnesium alloy having controlled corrosion resistance properties, which comprises magnesium (Mg) and an alloying element and includes a magnesium phase and a phase composed of magnesium and the alloying element, wherein the difference in electrical potential between the magnesium phase and the phase composed of magnesium and the alloying element is greater than 0 V but not greater than 0.2 V. 110-. (canceled)25-. (canceled)12. The magnesium alloy of claim 11 , wherein the magnesium alloy comprises greater than or equal to 5 wt % and not greater than 23 wt % of calcium (Ca) claim 11 , greater than or equal to 0.1 wt % and not greater than 5 wt % of zinc (Zn) claim 11 , the balance magnesium (Mg) and inevitable impurities.13. The magnesium alloy of claim 11 , wherein the magnesium alloy is surface-treated. This application is a divisional of U.S. application Ser. No. 13/511,891, filed May 24, 2012, which claims the benefit of priority of Korean Patent Application No. 10-2009-0120356, filed with the Korean Intellectual Property Office on Dec. 7, 2009, the disclosures of which are incorporated herein by reference in their entirety.The present invention relates to a magnesium alloy.Magnesium alloys are easily shaped, but have disadvantages of poor corrosion resistance and poor strength. Studies are continually performed with the aim of suitably changing the composition of magnesium alloys in order to improve the corrosion resistance and strength of magnesium alloys. In addition, studies have demonstrated that an increase in the amount of alloying elements in the magnesium alloy leads to an increase in the mechanical strength of the magnesium alloy. However, as the amount of alloying elements increases, several phases are formed, and an increase in the difference in electrical potential between these phases results in conditions such that a galvanic circuit, which increases the rate of corrosion of the alloy, is likely to be formed. ...

NON-HEAT TREATED MAGNESIUM ALLOY SHEET WITH EXCELLENT FORMABILITY AT ROOM TEMPERATURE IN WHICH SEGREATION IS MINIMIZED

Disclosed herein is a non-heat treatable magnesium alloy sheet, including: 1˜3 wt % of aluminum (Al); 0.5˜3 wt % of tin (Sn); and a balance of magnesium, wherein the maximum deviation of average Vickers hardness (Hv) thereof, caused by center segregation and inverse segregation, is 10 Hv or less. 1. A non-heat treatable magnesium alloy sheet , comprising:1˜3 wt % of aluminum (Al); 0.5˜3 wt % of tin (Sn); and a balance of magnesium, wherein a maximum deviation of average Vickers hardness (Hv) thereof, caused by center segregation and inverse segregation, is 10 Hv or less.2. The non-heat treatable magnesium alloy sheet of claim 1 , wherein the magnesium alloy sheet is formed by twin-roll strip casting claim 1 , and has a microstructure of a MgSn secondary phase.3. The non-heat treatable magnesium alloy sheet of claim 2 , wherein the MgSn secondary phase has a volume fraction of 5% or less.4. The non-heat treatable magnesium alloy sheet of claim 1 , wherein the magnesium alloy sheet has a yield strength of 200 MPa or more and a limit dome height (LDH) of 5 mm or more.5. The non-heat treatable magnesium alloy sheet of claim 1 , wherein the magnesium alloy sheet has a yield strength of 200 MPa or more and a limit dome height (LDH) of 6 mm or more.6. The non-heat treatable magnesium alloy sheet of claim 1 , wherein a volume fraction of tension twins inclined at an angle of 85˜90° to parent grains is 5% or more.7. The non-heat treatable magnesium alloy sheet of claim 2 , wherein the magnesium alloy sheet has a yield strength of 200 MPa or more and a limit dome height (LDH) of 5 mm or more.8. The non-heat treatable magnesium alloy sheet of claim 3 , wherein the magnesium alloy sheet has a yield strength of 200 MPa or more and a limit dome height (LDH) of 5 mm or more.9. The non-heat treatable magnesium alloy sheet of claim 2 , wherein the magnesium alloy sheet has a yield strength of 200 MPa or more and a limit dome height (LDH) of 6 mm or more.10. The non-heat treatable ...

BIODEGRADABLE IMPLANT AND METHOD FOR MANUFACTURING SAME

This invention relates to a biodegradable implant including magnesium, wherein the magnesium contains, as impurities, (i) manganese (Mn); and (ii) one selected from the group consisting of iron (Fe), nickel (Ni) and mixtures of iron (Fe) and nickel (Ni), wherein the impurities satisfy the following condition: 0<(ii)/(i)≦5, and an amount of the impurities is 1 part by weight or less but exceeding 0 parts by weight based on 100 parts by weight of the magnesium, and to a method of manufacturing the same. 125-. (canceled)27. The method of claim 26 , wherein i) comprises:i-1) preparing a porous structure; andi-2) filling pores of the porous structure with the magnesium alloy.28. The method of claim 26 , wherein ii) is performed using one or more selected from the group consisting of cooling claim 26 , extrusion claim 26 , and metal processing.2936-. (canceled) The present invention relates to a biodegradable implant and a method of manufacturing the same, and more particularly to a biodegradable implant, whose biodegradation rate is easily controlled, the strength and an interfacial force to bone tissue of which are high, in which a rate of bone formation is increased, and that has simultaneously improved corrosion resistance and mechanical properties, and to a method of manufacturing the same.Typical materials used in implants to be used in medical treatment include metal, ceramic and polymer. Among these, metallic implants have superior mechanical properties and processability. However, metallic implants are disadvantageous because of stress shielding, image degradation and implant migration. Also, ceramic implants have superior biocompatibility compared to the other implants. However, ceramic implants are easily broken by external impact, and are difficult to process. Also, polymeric implants have relatively weak strength compared to the other implant materials.Recently, porous implants are being developed which may accelerate the formation of bone tissue upon ...

Metallic structure and a method for use in fabricating thereof

A metallic structure includes a first plurality of metal particles arranged in an amorphous structure; a second plurality of metal particles arranged in a crystalline structure having at least two grain sizes, wherein the crystalline structure is arranged to receive the amorphous structure deposited thereon; wherein the grain size is arranged in a gradient structure.

FINE CRYSTALLITE HIGH-FUNCTION METAL ALLOY MEMBER AND METHOD FOR MANUFACTURING SAME

Provided by the present invention are a fine crystallite high-function metal alloy member, a method for manufacturing the same, and a business development method thereof, in which a crystallite of a metal alloy including a high-purity metal alloy whose crystal lattice is a face-centered cubic lattice, a body-centered cubic lattice, or a close-packed hexagonal lattice is made fine with the size in the level of nanometers (10m to 10m) and micrometers (10m to 10m), and the form thereof is adjusted, thereby remedying drawbacks thereof and enhancing various characteristics without losing superior characteristics owned by the alloy. 127-. (canceled)28. A fine crystallite high-function metal alloy member , wherein a metal alloy including a high-purity metal alloy whose crystal lattice is a face-centered cubic lattice , a body-centered cubic lattice , or a close-packed hexagonal lattice is made to contain therein 5 to 30000 ppm of gadolinium (Gd) , and the crystallite thereof is made fine with the size in the level of nanometers (10m to 10m) and micrometers (10m to 10m).29. A method for producing a fine crystallite high-function metal alloy member , wherein the method comprises:adding 5 to 30000 ppm of gadolinium (Gd) to a metal alloy including a high-purity metal alloy whose crystal lattice is a face-centered cubic lattice, a body-centered cubic lattice, or a close-packed hexagonal lattice; and{'sup': −9', '−6', '−6', '−3, 'cast-molding an obtained material to make a crystallite thereof fine with the size in the level of nanometers (10m to 10m) and micrometers (10m to 10m).'}30. The method according to claim 29 , wherein said metal alloy is a metal alloy including a high-purity metal alloy whose crystal lattice is a face-centered cubic lattice.31. The method according to claim 29 , wherein said metal alloy including a high-purity metal alloy is a metal alloy including a high-purity metal alloy of a metal selected from the group consisting of gold (Au) claim 29 , silver (Ag ...

Surface treatment method on Micro-arc Oxidation treated Mg alloys

Chemically and mechanically protective oxide film was formed on Mg alloys using micro-arc oxidation (MAO) methods. Further modification of the obtained MAO surfaces was made in various aspects and the processes thereof were described. Firstly, the protection is enhanced by forming super-hydrophobic surfaces, with water contact angle higher than 140°, attributed to hierarchical nano-micro structures. Secondly, the electrical property of the MAO surfaces is modified. A film with sheet resistance as low as 0.05 Ω/sq is achieved by electro-less Ni deposition on MAO surfaces. Thirdly, black colors are achieved by the sol-gel process on MAO samples. 2. The method of claim 1 , wherein the water contact angle of said surface of said treated sample after said step (c) is at least 140.4°.3. The method of claim 1 , wherein said sample of step (a) is etched with NaOH solution before step (b).4. The method of claim 3 , wherein said solution is selected from a group consisting of perfluorodecyltrimethoxysilane claim 3 , triethoxyoctylsilane and perfluorodecyltriethoxysilane.5. The method of claim 1 , wherein said solution is tetraethyl orthosilicate mixed with silanes claim 1 , and said step (b) and step (c) are repeated twice.6. A magnesium alloy comprisinga magnesium based ceramic layer of 5-40 μm thickness; and a super-hydrophobic coating thereon, wherein said coating comprises a silane layer such that said alloy has a water contact angle of at least 140.4°.7. The magnesium alloy of wherein the surface of said alloy comprises a flake-like structure; the flake of said flake-like structure has a length of 100-200 nm.8. The magnesium alloy of manufactured by the method of or .9. The magnesium alloy of claim 6 , wherein said surface comprises nanoparticles with a size of 200 nm.10. The magnesium alloy of manufactured by the method of .10. The method of claim 9 , wherein said solution of reducing agent is an ethanol solution of NaBH.11. The method of claim 9 , wherein said ...

Degradable Deformable Diverters and Seals

A variable stiffness engineered degradable ball or seal having a degradable phase and a stiffener material. The variable stiffness engineered degradable ball or seal can optionally be in the form of a degradable diverter ball or sealing element which can be made neutrally buoyant. 1. A method of forming a temporary seal in a well formation that includes:a. providing a variable stiffness or deformable first degradable component capable of forming a fluid seal;b. combining said first degradable component with a fluid to be inserted into said well formation;c. inserting said fluid that includes said first degradable component into said well formation to cause said first degradable component to be positioned at or at least partially in an opening located in the well formation that is to be partially or fully sealed;d. causing said first degradable component that is located at or at least partially in said opening to deform so as to at least partially form a seal in said opening so as to partially or fully block or divert a flow of said fluid into and/or through said opening, said first degradable component caused to be at least partially deformed by fluid pressure of said fluid;e. performing operations such as drilling, circulating, pumping, and/or hydraulic fracturing in said well formation for a period of time after said first degradable component has deformed and at least partially sealed said opening; and,f. causing said first degradable component to partially or fully degrade to cause said first degradable component to be partially or fully removed from said opening to thereby allow 80-100% of fluid flow rates into said opening that existed prior to said first degradable component partially or fully sealing said opening.2. The method as defined in claim 1 , wherein said first degradable component has a size and shape that inhibits or prevents said first degradable component from fully passing through said opening to be sealed.3. The method as defined in claim 1 , ...

BIODEGRADABLE WIRE FOR MEDICAL DEVICES

A bioabsorbable material composition includes magnesium (Mg), lithium (Li) and calcium (Ca). Lithium is provided in a sufficient amount to enhance material ductility, while also being provided in a sufficiently low amount to maintain corrosion resistance at suitable levels. Calcium is provided in a sufficient amount to enhance mechanical strength and/or further influence the rate of corrosion, while also being provided in a sufficiently low amount to preserve material ductility. The resultant ductile base material may be cold-worked to enhance strength, such as for medical applications. In one application, the material may be drawn into a fine wire, which may be used to create resorbable structures for use in vivo such as stents. 1. A magnesium-based alloy wire , comprising:between 3 wt. % lithium and 7 wt. % lithium;between 0.1 wt. % calcium and 1 wt. % calcium; andbalance magnesium and trace impurities.2. The magnesium-based alloy wire of claim 1 , wherein said wire comprises between 0.20 and 0.30 wt. % calcium.3. The magnesium-based alloy wire of claim 2 , wherein the alloy exhibits sufficient ductility to be subjected to 98% cold work without fracture.4. The magnesium-based alloy wire of claim 2 , wherein:the alloy is formed as a wire product having 98% retained cold work, the wire having a yield strength reaching 276 MPa.5. The magnesium-based alloy wire of claim 2 , wherein:the alloy is formed as a wire product having 98% retained cold work, the wire having an ultimate tensile strength reaching 334 MPa.6. The magnesium-based alloy wire of claim 1 , wherein said wire comprises between 0.9 wt. % and 1 wt. % calcium.7. The magnesium-based alloy wire of claim 6 , wherein the alloy exhibits sufficient ductility to be subjected to 88% cold work without fracture.8. The magnesium-based alloy wire of claim 6 , wherein:the alloy is formed as a wire product having 98% retained cold work, the wire having a yield strength reaching 240 MPa.9. The magnesium-based alloy wire ...

Resorbable Implant Material Made From Magnesium Or A Magnesium Alloy

The present invention relates to a resorbable implant material made of magnesium or magnesium alloy and to a process for the production thereof. A disadvantage of the known resorbable implants is that their resorption has hitherto only been trackable using x-ray or CT examinations. The invention provides a resorbable implant material comprising homogeneously distributed fluorescent nanodiamonds in a matrix of magnesium or a magnesium alloy. Fluorescent nanodiamonds are biologically nonhazardous and provide a stable emission in the near infrared range due to nitrogen-vacancy centers (NV centres). This allows detection of the implant material in the blood plasma of the patient. The resorbable implant material according to the invention is produced by a process wherein magnesium or a magnesium alloy is melted, nanodiamonds are added to the melt and the melt of magnesium or a magnesium alloy provided with nanodiamonds is subjected to an ultrasound treatment.

Methods of forming magnesium-based alloy articles at high strain rates

Methods of making magnesium-based alloy components, such as automotive components, include treating a casting comprising a magnesium-based alloy to a first deforming process to form a preform. In one aspect, the first deforming process has a first maximum predetermined strain rate of greater than or equal to about 0.001/s to less than or equal to about 1/s in an environment having a temperature of ≥to about 250° C. to ≤to about 450° C. In another aspect, the first deforming process is cold deforming that is followed by annealing. The preform is then subjected to a second deforming process having a second maximum predetermined strain rate of ≥about 1/s to ≤about 100/s in an environment having a temperature of ≥about 150° C. to ≤about 450° C. to form the magnesium-based alloy component substantially free of cracking. A solid magnesium-based alloy component having select microstructures are also provided.

Production method for magnesium-containing metal material provided with coating

Provided is a magnesium-containing metal material that includes coatings having excellent corrosion resistance on a surface. Specifically, provided is a magnesium-containing metal material with coating, which is characterized by including: a magnesium hydroxide-containing first coating on a surface of a magnesium-containing metal material composed of magnesium or a magnesium alloy; a hydroxyapatite and/or hydroxyapatite carbonate-containing third coating over the first coating; and a dibasic calcium phosphate-containing second coating between the first coating and the third coating.

Magnesium alloy sheet and magnesium alloy structural member

Provided are a magnesium alloy sheet having excellent formability in plastic forming, such as press forming, and a magnesium alloy structural member. The magnesium alloy sheet is obtained by subjecting a magnesium alloy to rolling and has a cross section parallel to the thickness direction of the magnesium alloy sheet, in which, when the length of the major axis and the length of the minor axis of each of crystal grains in the cross section are determined, an aspect ratio is defined as the ratio of the length of the major axis to the length of the minor axis (length of major axis/length of minor axis), and crystal grains having an aspect ratio of 3.85 or more are defined as elongated grains, the area fraction of the elongated grains in the cross section is 3% to 20%.

Method for preparing recycled low-nickel magnesium alloy using magnesium scraps

The present invention relates to a method for preparing a recycled low-nickel magnesium alloy using magnesium scraps. More particularly, the recycled magnesium alloy having a reduced nickel content can be prepared by adding Al and misch metal to molten magnesium scraps so as to form an Ni—Al-misch metal three-phase alloy or cluster thereof; and separating and removing the formed Ni—Al-misch metal three-phase alloy or the cluster thereof using gravity.

THERMOELECTRIC MATERIALS SYNTHESIZED BY SELF-PROPAGATING HIGH TEMPERATURE SYNTHESIS PROCESS AND METHODS THEREOF

The disclosure relates to thermoelectric materials prepared by self-propagating high temperature synthesis (SHS) process combining with Plasma activated sintering and methods for preparing thereof. More specifically, the present disclosure relates to the new criterion for combustion synthesis and the method for preparing the thermoelectric materials which meet the new criterion. 115-. (canceled)16. A method of preparing a thermoelectric material , comprising:1) weighing powders of reactants according to an appropriate stoichiometric ratio, mixing the powders in an agate mortar, and cold-pressing the powders into a pellet;{'sup': '−3', '2) sealing the pellet in a silica tube under a pressure of 10Pa, initiating a self-propagating high temperature synthesis (SHS) by point-heating a portion of the pellet wherein, once the SHS starts, a wave of exothermic reactions passes through the remaining portion of the pellet, cooling down the pellet after reaction in air or quenched in salt water to obtain a cooled-down pellet; and'} {'sub': 4-e', 'e', '12-f', 'f', '3, 'wherein the reactants include Co, M, Sb, and Te powders, M is Fe or Ni, the stoichiometric ratio is Co:M:Sb:Te=4−e:e:12−f:f, where 0≤e≤1.0, 0≤f≤1.0, the cooled-down pellet obtained in step (2) contains CoMSbTe; and parameters of the PAS include a reaction temperature of 650° C. with a heating rate of 100° C./min and a pressure of 40 MPa for 8 min, a final product is a CoSbbased thermoelectric material.'}, '3) crushing the cooled-down pellet obtained in step 2) into powder, and sintering the powder with plasma activated sintering (PAS) to form a bulk material,'} The present disclosure relates to thermoelectric materials prepared by self-propagating high temperature synthesis (SHS) process combining with plasma activated sintering (PAS) and a method for preparing the same. More specifically, the present disclosure relates to a new criterion for combustion synthesis and the method for preparing thermoelectric ...

CASE

A case includes a main body made of a magnesium alloy, and configured to house oil therein. An inner wall surface of the main body is coated with a black film. 1. A case comprising:a main body made of a magnesium alloy, and configured to house oil therein,an inner wall surface of the main body is coated with a black film.2. The case according to claim 1 , whereinthe main body includes a mating surface region which is not coated with the black film.3. The case according to claim 1 , whereinthe main body includes a contact surface configured to contact a bearing surface of a fastening member, at least a part of the contact surface being not coated with the black film.4. The case according to claim 3 , whereina part of the contact surface configured to contact an inner periphery of the bearing surface is not coated with the black film, and a part of the contact surface configured to contact an outer periphery of the bearing surface is coated with the black film.5. The case according to claim 1 , whereinthe main body defines a screw hole with a side surface of the screw hole being not coated with the black film.6. The case according to claim 1 , whereinthe case is configured to be placed in a vehicle, andan outer wall surface of the main body is coated with the black film. This is a U.S. national phase application of PCT/JP2019/020211, filed on May 22, 2019, which claims priority to Japanese Patent Application No. 2018-110618, filed on Jun. 8, 2018. The entire disclosure of Japanese Patent Application No. 2018-110618 is hereby incorporated herein by reference.The present invention relates to a case.With an automatic transmission for a vehicle, using a magnesium alloy for the material of the components to reduce weight is known. In Japanese Laid-Open Patent Publication No. 2010-90405, it is disclosed that a transmission case (one of the cases) can be considered as one application of a magnesium alloy.When the inventors did trial production of a case made of a magnesium ...

MAGNESIUM-BASED ALLOY POWDER AND MAGNESIUM-BASED ALLOY MOLDED ARTICLE

A magnesium-based alloy powder is provided that comprises a magnesium-based alloy containing 0.2 mass % to 5 mass % of calcium. The magnesium-based alloy powder has an average particle diameter of 100 μm to 1,500 μm. The mean value of hardness variation index values obtained by dividing the difference of the maximum value and the minimum value of micro Vickers hardnesses taken at 10 measurement points in a particle cross section by the maximum value is 0.3 or less. The magnesium-based alloy powder has a particle surface coated with a calcium oxide-containing coating layer. 1. A magnesium-based alloy powder comprising a magnesium-based alloy that contains 0.2 mass % to 5 mass % of calcium ,wherein the magnesium-based alloy powder has an average particle diameter of 100 μm to 1,500 μm,wherein the mean value of hardness variation index values obtained by dividing the difference of the maximum value and the minimum value of micro Vickers hardnesses taken at 10 measurement points in a particle cross section by the maximum value is 0.3 or less, andwherein the magnesium-based alloy powder has a particle surface coated with a calcium oxide-containing coating layer.2. The magnesium-based alloy powder according to claim 1 , wherein the highest peak intensity derived from an intermetallic compound of calcium and aluminum is 3% to 40% of the highest peak intensity derived from magnesium in an X-ray diffraction spectrum of the magnesium-based alloy powder.3. The magnesium-based alloy powder according to claim 1 , wherein the coating layer is primarily a mixture of calcium oxide and magnesium oxide.4. The magnesium-based alloy powder according to claim 1 , wherein the magnesium-based alloy further comprises 2.5 mass % to 12 mass % of aluminum.5. The magnesium-based alloy powder according to claim 1 , wherein the average dendrite arm spacing (DAS) in a crystal structure of the magnesium-based alloy powder is 0.05 μm to 5 μm.6. The magnesium-based alloy powder according to claim 1 ...

MAGNESIUM-BASED ALLOY POWDER AND MAGNESIUM-BASED ALLOY MOLDED ARTICLE

A magnesium-based alloy powder is made of a magnesium-based alloy that contains 0.2 mass % to 5 mass % of calcium, wherein the magnesium-based alloy powder has an average particle diameter of 100 μm to 1,500 μm, wherein the magnesium-based alloy powder has a particle average aspect ratio of 0.5 to 1, wherein the magnesium-based alloy powder has an apparent density of 0.2 g/cmto 1.2 g/cm, and wherein the mean value of hardness variation index values obtained by dividing the difference of the maximum value and the minimum value of micro Vickers hardnesses taken at 10 measurement points in a particle cross section by the maximum value is 0.3 or less. 1. A magnesium-based alloy powder comprising a magnesium-based alloy that contains 0.2 mass % to 5 mass % of calcium ,wherein the magnesium-based alloy powder has an average particle diameter of 100 μm to 1,500 μm,wherein the magnesium-based alloy powder has a particle average aspect ratio of 0.5 to 1,{'sup': 3', '3, 'wherein the magnesium-based alloy powder has an apparent density of 0.2 g/cmto 1.2 g/cm, and'}wherein the mean value of hardness variation index values obtained by dividing the difference of the maximum value and the minimum value of micro Vickers hardnesses taken at 10 measurement points in a particle cross section by the maximum value is 0.3 or less.2. The magnesium-based alloy powder according to claim 1 , wherein the calcium segregates on a surface of each particle of the magnesium-based alloy powder.3. The magnesium-based alloy powder according to claim 1 , wherein the magnesium-based alloy further comprises 2.5 mass % to 12 mass % of aluminum.4. The magnesium-based alloy powder according to claim 1 , wherein the average dendrite arm spacing (DAS) in a crystal structure of the magnesium-based alloy powder is 0.05 μm to 5 μm.5. The magnesium-based alloy powder according to claim 1 , wherein the magnesium-based alloy powder is produced by using high-speed rotary water jet atomization.6. A magnesium-based ...

Galvanically-Active In Situ Formed Particles for Controlled Rate Dissolving Tools

A castable, moldable, and/or extrudable structure using a metallic primary alloy. One or more additives are added to the metallic primary alloy so that in situ galvanically-active reinforcement particles are formed in the melt or on cooling from the melt. The composite contain an optimal composition and morphology to achieve a specific galvanic corrosion rate in the entire composite. The in situ formed galvanically-active particles can be used to enhance mechanical properties of the composite, such as ductility and/or tensile strength. The final casting can also be enhanced by heat treatment, as well as deformation processing such as extrusion, forging, or rolling, to further improve the strength of the final composite over the as-cast material. 132-. (canceled)33. A down hole well component having dissolution properties which enable the controlled dissolving of at least a portion of said down hole well component , said down hole well component at least partially formed of a dissolvable magnesium composite that includes in situ precipitation of galvanically-active intermetallic phases to enable controlled dissolution of said magnesium composite , said magnesium composite has a dissolution rate of at least 5 mg/cm/hr in 3 wt. % KCl water mixture at 90° C. , said magnesium composite comprising a mixture of a magnesium or a magnesium alloy and an additive material , said additive material having a greater melting point temperature than a solidus temperature of said magnesium or magnesium alloy , said additive material constituting about 0.05-45 wt. % of said mixture , said additive material forming metal composite particles or precipitant in said magnesium composite that include said additive material and magnesium , said metal composite particles or precipitant included in said in situ precipitation of said galvanically-active intermetallic phases , said additive material includes one or more metals selected from the group consisting of copper , nickel , cobalt , ...

Self-Healing Metals and Alloys – Including Structural Alloys and Self-Healing Solders

This invention relates to structures and processing imparting self-healing characteristics in Iron, Copper, Zinc, Magnesium, Nickel, Titanium, Gold, Silver and their alloys, and other materials including polymers and ceramics. The composite disclosed consists of a matrix with dispersed hollow macro, micro and nanotubes or balloons or fibers encapsulating a lower melting point or liquid healing material; self-healing results from flow of liquid “healing agent” into the crack. Another type of self-healing material is where the cracks are subjected to compressive stresses due to phase transformations in the matrix or reinforcement, including nano structure matrix and nanosize reinforcements. The compressive stresses could be due to shrinkage of shape memory material in the form of fibers, micro and nano size which deform, or reinforcements when expand upon reaction with atmosphere sealing the crack. The invention includes self-healing due to hollow vascular networks through which healing agent can flow and seal the crack.

Degradable and/or Deformable Diverters and Seals

A variable stiffness engineered degradable ball or seal having a degradable phase and a stiffener material. The variable stiffness engineered degradable ball or seal can optionally be in the form of a degradable diverter ball or sealing element which can be made neutrally buoyant. 1. A method of forming a temporary seal in a well formation that includes:a. providing a variable stiffness or deformable first degradable component capable of forming a fluid seal;b. combining said first degradable component with a fluid to be inserted into said well formation;c. inserting said fluid including said first degadable component into said well formation to cause said first degradable component to be positioned at or at least partially in an opening located in the well formation that is to be partially or fully sealed;d. causing said first degradable component located at or at least partially in said opening to deform to at least partially form a seal in said opening to partially or fully block or divert a flow of said fluid into and/or through said opening, said first degradable component at least partially deformed by fluid pressure of said fluid;e. optionally causing a plurality of said first degradable component to agglomerate with one another to at least partially form a seal in said opening so as to partially or fully block or divert a flow of said fluid into and/or through said opening, said plurality of said first degradable component at least partially agglomerated together by fluid pressure of said fluid;f. performing operations such as drilling, circulating, pumping, and/or hydraulic fracturing in said well formation for a period of time after said first degradable component has deformed and optionally agglomerated and has at least partially sealed said opening; and,g. causing said first degradable component to partially or fully degrade to cause said first degradable component to be partially or fully removed from said opening to thereby allow 80-100% of fluid flow ...

ALLOYS AND METHODS OF FORMING SAME

In one aspect of the invention, an alloy includes a first element comprising magnesium (Mg), titanium (Ti), zirconium (Zr), chromium (Cr), or nickelaluminum (NiAl), a second element comprising lithium (Li), calcium (Ca), manganese (Mn), aluminum (Al), or a combination thereof, and a third element comprising zinc (Zn). According to the invention, nanoscale precipitates is produced in the magnesium alloy by additions of zinc and specific heat-treatment. These precipitates lower the energy for dislocation movements and increase the number of available slip systems in the magnesium alloy at room temperature and hence improve ductility and formability of the magnesium alloy. 1. A magnesium alloy , comprising:a first element comprising magnesium;a second element; anda third element.2. The magnesium alloy of claim 1 , consisting essentially of the first element claim 1 , the second element claim 1 , and the third element.3. The magnesium alloy of claim 1 , whereinthe second element comprises lithium or calcium; andthe third element comprises zinc.4. The magnesium alloy of claim 3 , whereinthe content of the second element is at most about 5.0 wt % of the magnesium alloy; andthe content of the third element is at most about 10.0 wt % of the magnesium alloy.5. The magnesium alloy of claim 4 , whereinthe content of the lithium is at most about 3.0 wt % of the magnesium alloy; andthe content of the zinc is at most about 6.0 wt % of the magnesium alloy.6. The magnesium alloy of claim 4 , whereinthe content of the lithium is at most about 2.4 wt % of the magnesium alloy; andthe content of the zinc is at most about 5.1 wt % of the magnesium alloy.7. The magnesium alloy of claim 4 , whereinthe content of the calcium is at most about 2.0 wt % of the magnesium alloy; andthe content of the zinc is at most about 6.0 wt % of the magnesium alloy8. The magnesium alloy of claim 4 , whereinthe content of the calcium is at most about 1.0 wt % of the magnesium alloy; andthe content of the ...

IMPLANT AND METHOD FOR PRODUCTION THEREOF

An implant, in particular an intraluminal endoprosthesis, or a semi-finished part for an implant, having a hollow cylindrical body, wherein the body includes magnesium, and the body is enriched with gallium or a gallium alloy in a region close to a surface. 1. An implant , in particular an intraluminal endoprosthesis , comprising a hollow cylindrical body , wherein the body comprises magnesium , and the body is enriched with gallium or a gallium alloy in a region close to a surface.2. The implant according to claim 1 , wherein the intraluminal endoprosthesis is a stent.3. The implant according to claim 1 , wherein the magnesium forms part of a magnesium alloy.4. The implant according to claim 3 , wherein the magnesium alloy is a WE 43 alloy claim 3 , characterized as 4% Y claim 3 , 2% Nd claim 3 , 0.5% Gd claim 3 , 0.5% Dy claim 3 , 0.5% Zr claim 3 , and a remainder Mg.5. The implant according to claim 1 , wherein the region close to the surface is enriched with the gallium alloy claim 1 , wherein the gallium alloy comprises 65 to 95% gallium.6. The implant according to claim 5 , wherein the gallium alloy further comprises indium and tin.7. The implant according to claim 1 , wherein the region close to the surface comprises a depth of up to 40 μm from the surface.8. The implant according to claim 1 , wherein the region close to the surface comprises a depth of at least 10 μm from the surface.9. The implant according to claim 8 , wherein the depth is at least 15 μm from the surface.10. The implant according to claim 1 , wherein the region close to the surface comprises magnesium alloyed with gallium.11. The implant according to claim 1 , further comprising a polymer coating.12. A semifinished part for an intraluminal endoprosthesis claim 1 , the semifinished part comprising a hollow cylindrical body claim 1 , wherein the body comprises magnesium and diffused into a region close to a surface of the body is gallium or a gallium alloy.13. The semifinished part according ...

ULTRAFINE-GRAINED PROFILE OF TWIN-CRYSTAL WROUGHT MAGNESIUM ALLOYS, PREPARATION PROCESS AND USE OF THE SAME

The present invention provides an ultrafine-grained profile of twin-crystal wrought magnesium alloys, preparation process and use of the same. In the process, raw materials of magnesium alloys are firstly smelted and cast, and are subjected to solution treatment at 300˜500° C.; then a preform is pre-deformed, so that a great amount of twin crystal microstructure forms in the magnesium alloys and the grain size of not larger than 100 μm is achieved; subsequently continuous ECAP process is performed at 200˜350° C., and the die is replaced in according to requirement so as to obtain the desired profile. The ultrafine-grained profile of magnesium alloys prepared in the invention has the grain sizes of from 100 to 450 nm, the tensile strength of 300˜400 MPa, and the elongation of 20˜35%. The length of the profile can be more than 10 m, meeting the needs of continuous production. 1. A process for preparing ultrafine-grained profile of twin-crystal wrought magnesium alloys , which comprises the steps as follows:(1) subjecting raw materials of magnesium alloys to smelting and casting under the atmospheric protection, and solid solution at 300˜500;(2) subjecting a preform obtained from step (1) to pre-deformation, so that a great amount of twin crystal microstructure forms in the magnesium alloys and the grain size of not larger than 100 μm is achieved;(3) conducting continuous Equal Channel Angular Pressing process below the re-crystallization temperature, wherein the channel angle is 90°˜120°, the linear pressing speed is not beyond 10 mm/s, the strain rate in the last pass is about 60˜340%, and the die can be replaced in the last pass of the pressing according to requirement so as to obtain the desired profile; and(4) annealing the profile at 150˜300.2. A process according to claim 1 , wherein the magnesium alloys are selected from the group consisting of Mg-RE claim 1 , Mg—Th claim 1 , Mg—Li claim 1 , Mg-RE-Zr claim 1 , Mg—Al—Mn claim 1 , Mg—Al—Zn claim 1 , Mg—Zn—Zr ...

Biodegradable metal alloys

The invention relates to biodegradable, metal alloy-containing compositions, methods for their preparation and applications for their use. The compositions include magnesium and other components, such as yttrium, calcium, silver, cerium, and zirconium; or zinc, silver, cerium, and zirconium; or aluminum, zinc, calcium, manganese, silver, yttrium; or strontium, calcium, zinc. The compositions are prepared by vacuum induction/crucible melting together the components and casting the melted mixture in a preheated mild steel/copper mold. In certain embodiments, the compositions of the invention are particularly useful for forming medical devices for implantation into a body of a patient.

Magnesium Alloy With Adjustable Degradation Rate

An alloy and an implant having a three-dimensional structure based on such alloy. The alloy comprises a MgZnCa alloy containing nanosized precipitates being less noble than the Mg matrix alloy and having a Zn content ranging 0.1 wt. % Zn to 2 wt. % Zn and a calcium content ranging from 0.2 wt. % to 0.5 wt. %, and having less than 0.04 wt. % of one or more other elements with the remainder being Mg. For these micro-alloys, any second phase generated during the solidification process can be completely dissolved by a solution heat treatment. Finely dispersed nanosized precipitates can then be generated by a subsequent aging heat treatment step. These precipitates are used to “pin” the grain boundaries and to prevent the coarsening of the grain structure during further processing to achieve grain sizes below 5 μm.

ALUMINUM ALLOY POWDER METAL COMPACT

A powder metal compact is disclosed. The powder metal compact includes a cellular nanomatrix comprising a nanomatrix material. The powder metal compact also includes a plurality of dispersed particles comprising a particle core material that comprises an Al—Cu—Mg, Al—Mn, Al—Si, Al—Mg, Al—Mg—Si, Al—Zn, Al—Zn—Cu, Al—Zn—Mg, Al—Zn−Cr, Al—Zn—Zr, or Al—Sn—Li alloy, or a combination thereof, dispersed in the cellular nanomatrix. 1. A powder metal compact , comprising:a cellular nanomatrix comprising a nanomatrix material, the nanomatrix material comprising Ni, Fe, Cu, Al, Zn, Mn, or Si, or an oxide, nitride, carbide, intermetallic compound or cermet comprising at least one of the foregoing, or a combination thereof;a plurality of dispersed particles comprising a particle core material that comprises an Al—Cu—Mg, Al—Mn, Al—Si, Al—Mg, Al—Mg—Si, Al—Zn, Al—Zn—Cu, Al—Zn—Mg, Al—Zn—Cr, Al—Zn—Zr, or Al—Sn—Li alloy, or a combination thereof, dispersed in the cellular nanomatrix.2. The powder metal compact of claim 1 , wherein the particle core material comprises claim 1 , in weight percent of the alloy claim 1 , about 0.05% to about 2.0% Mg; about 0.1% to about 0.8% Si; about 0.7% to about 6.0% Cu; about 0.1% to about 1.2% Mn; about 0.1% to about 0.8% Zn; about 0.05% to about 0.25% Ti; and about 0.1%-1.2% Fe claim 1 , and the balance Al and incidental impurities.3. The powder metal compact of claim 1 , wherein the particle core material comprises claim 1 , in weight percent of the alloy claim 1 , about 0.5% to about 6.0% Mg; about 0.05% to about 0.30% Zn; about 0.10% to about 1.0% Mn; about 0.08% to about 0.75% Si and the balance Al and incidental impurities.4. The powder metal compact of claim 1 , wherein the particle core material or the nanomatrix material claim 1 , or a combination thereof claim 1 , comprises a nanostructured material.5. The powder metal compact of claim 4 , wherein the nanostructured material has a grain size less than about 200 nm.6. The powder metal compact ...

Magnesium mother alloy and metal alloy

Disclosed are a magnesium mother alloy, a manufacturing method thereof, a metal alloy using the same, and a method of manufacturing the metal alloy. In particular, there are provided a magnesium mother alloy with improved oxidation and ignition properties, and a manufacturing method thereof, and also provided a metal alloy with low cost that is suitable for design purposes using the magnesium mother alloy, and a method of manufacturing the metal alloy. The magnesium mother alloy includes a plurality of magnesium grains, and scandium dissolved in the magnesium grains, or a scandium compound crystallized at grain boundaries which are not inside but outside the magnesium grains. Also, the metal alloy suitable for design purposes is manufactured at low cost by adding the magnesium mother alloy containing scandium into a magnesium alloy or an aluminum alloy.

THERMOELECTRIC MATERIALS SYNTHESIZED BY SELF-PROPAGATING HIGH TEMPERATURE SYNTHESIS PROCESS AND METHODS THEREOF

The disclosure relates to thermoelectric materials prepared by self-propagating high temperature synthesis (SHS) process combining with Plasma activated sintering and methods for preparing thereof. More specifically, the present disclosure relates to the new criterion for combustion synthesis and the method for preparing the thermoelectric materials which meet the new criterion. 115-. (canceled)16. A method of preparing a thermoelectric material , comprising:1) weighing powders of reactants according to an appropriate stoichiometric ratio, mixing the powders in an agate mortar, and cold-pressing the powders into a pellet;{'sup': '−3', '2) sealing the pellet in a silica tube under a pressure of 10Pa, initiating a self-propagating high temperature synthesis (SHS) by point-heating a portion of the pellet wherein, once the SHS starts, a wave of exothermic reactions passes through the remaining portion of the pellet, cooling down the pellet after reaction in air or quenched in salt water to obtain a cooled-down pellet; and'} {'sub': 2', '3-x', 'x', '2', '3, 'wherein the reactants include Bi, Te, and Se powders, the stoichiometric ratio is Bi:Te:Se =2:(3-x):x, where 0 Подробнее

THERMOELECTRIC MATERIALS SYNTHESIZED BY SELF-PROPAGATING HIGH TEMPERATURE SYNTHESIS PROCESS AND METHODS THEREOF

The disclosure relates to thermoelectric materials prepared by self-propagating high temperature synthesis (SHS) process combining with Plasma activated sintering and methods for preparing thereof. More specifically, the present disclosure relates to the new criterion for combustion synthesis and the method for preparing the thermoelectric materials which meet the new criterion. 2. Based on the new criterion for combustion synthesis , those binary compounds include thermoelectric compounds , high temperature intermetalic and high temperature refractory.4. According to the above step , the pellet after SHS was crushed into powders and then sintered by spark plasma sintering to obtain the bulks5. According to the above step , the binary compounds are mostly thermoelectric material , high temperature ceramics and intermetallic.7. In step 1) of , what we choose for elemental A can be the elemental in IIIB , IVB , and VB column of periodic Table. What we choose for elemental B can be the elemental in VIIIB column of periodic Table. What we choose for elemental X can be the elemental in IIIA , IVA , VA column of periodic Table. In step 3) of , the parameter for spark plasma sintering is with the temperature above 850° C. and the pressure around 30-50 MPa.8. According to and , one of or the mixture of the Ti , Zr , Hf , Sc , Y , La , V , Nb , and Ta can be selected as elemental A. One of or the mixture of the Fe , Co , Ni , Ru , Rh , Pd , and Pt can be selected as elemental B. One of or the mixture of the Sn , Sb , and Bi can be selected as elemental X. The present disclosure relates to thermoelectric materials prepared by self-propagating high temperature synthesis (SHS) process combining with plasma activated sintering (PAS) and a method for preparing the same. More specifically, the present disclosure relates to a new criterion for combustion synthesis and the method for preparing thermoelectric materials which can meet the new criterion.In the heat flow of the energy ...

Thermoelectric materials synthesized by self-propagating high temperature synthesis process and methods thereof

The disclosure relates to thermoelectric materials prepared by self-propagating high temperature synthesis (SHS) process combining with Plasma activated sintering and methods for preparing thereof. More specifically, the present disclosure relates to the new criterion for combustion synthesis and the method for preparing the thermoelectric materials which meet the new criterion.

THERMOELECTRIC MATERIALS SYNTHESIZED BY SELF-PROPAGATING HIGH TEMPERATURE SYNTHESIS PROCESS AND METHODS THEREOF

The disclosure relates to thermoelectric materials prepared by self-propagating high temperature synthesis (SHS) process combining with Plasma activated sintering and methods for preparing thereof. More specifically, the present disclosure relates to the new criterion for combustion synthesis and the method for preparing the thermoelectric materials which meet the new criterion. 115-. (canceled)16. A method of preparing a thermoelectric material , comprising:1) weighing powders of reactants according to an appropriate stoichiometric ratio, mixing the powders in an agate mortar, and cold-pressing the powders into a pellet;{'sup': '−3', '2) sealing the pellet in a silica tube under a pressure of 10Pa, initiating a self-propagating high temperature synthesis (SHS) by point-heating a portion of the pellet wherein, once the SHS starts, a wave of exothermic reactions passes through the remaining portion of the pellet, cooling down the pellet after reaction in air or quenched in salt water to obtain a cooled-down pellet; and'}3) crushing the cooled-down pellet obtained in step 2) into powder, and sintering the powder with plasma activated sintering (PAS) to form a bulk material,{'sub': a', 'b', '4, 'wherein the reactants include Cu, M, Sn, and Se powders, M is Sb, Zn, or Cd; the stoichiometric ratio is Cu:M:Sn:Se=a:1:b:4, where a=2 or 3, b=0 or 1, the cooled-down pellet obtained in step (2) contains CuMSnSe.'} The present disclosure relates to thermoelectric materials prepared by self-propagating high temperature synthesis (SHS) process combining with plasma activated sintering (PAS) and a method for preparing the same. More specifically, the present disclosure relates to a new criterion for combustion synthesis and the method for preparing thermoelectric materials which can meet the new criterion.In the heat flow of the energy consumption in the world, there is about 70% of the total energy wasted in the form of heat. If those large quantities of waste heat can be ...