Process for producing a highly transparent impact-resistant glass ceramic

The process for producing a transparent lithium aluminosilicate glass ceramic plate includes ceramicizing a green glass body of the Li2OAl2OSiO2 system using a ceramization program, which includes heating it, for the purpose of nucleation, to a temperature of 750° C.±20° C. and maintaining the temperature for 20±15 minutes, further heating the green glass body, for the purpose of ceramization, to a temperature of 900±20° C. and maintaining the to temperature for 20±15 minutes and then cooling to room temperature. The transparent plate has a thermal expansion coefficient (CTE) from 0.15×106/K to +0.15×106/K at 30 to 700° C. and a brightness value observed at an angle of 2° of 80 for a 4-mm thick plate for transmitted normal light.

Conversion material

The invention describes a glass and a glass-ceramic which at least includes the constituents SiO 2 , Al 2 O 3 and Y 2 O 3 and is preferably doped with rare earth ions. The weight ratio between the weight of Y 2 O 3 and the total weight of SiO 2 , Al 2 O 3 and Y 2 O 3 is at least 0.2, preferably at least 0.4 or more. The rare earth ions can preferably be incorporated in crystal phases which are precipitated out of glass with a high yttrium content. ( FIG. 2 ).

SINTERED GLASS CERAMIC AND METHOD FOR PRODUCING THE SAME

The invention provides a method for producing a glass ceramic comprising the steps of melting a starting glass that is free from alkali, except for incidental contamination, and that contains at least one garnet-forming agent and at least one oxide of a lanthanoid; grinding the starting glass to produce a glass frit; molding by pressing and sintering the glass frit until at least one garnet phase containing lanthanoids is formed. A glass ceramic produced in this way may contain 5-50% by weight of SiO2, 5-50% by weight of Al2O3 and 10-80% by weight of at least one oxide selected from the group formed by Y2O3, Lu2O3, Sc2O3, Gd2O3, Yb2O3, Ce2O3, as well as 0.1-30% by weight of at least one oxide selected from the group formed by B2O3, Th2O3, and oxides of the lanthanoids, except Lu2O3, Gd2O3, Yb2O3, Ce2O3. Such a glass ceramic is suited especially for down conversion of excitation radiation in the blue and in the UV region of the spectrum.

Reactive Armor

An exemplary embodiment provides transparent reactive armor systems that are far lighter than conventional reactive armor systems due to the materials used therein. The reactive armor of embodiments of the present invention is composed of at least three layers. These layers are—from the outside to the inside—the front plate, the explosives layer and the explosives substrate as well as optional further inside layers with antiballistic effects. Consequently, the explosives substrate can be part of a multilayer laminate.

Armor material made of glass ceramics

The invention relates to a glass ceramic armour material consisting (in % by weight in relation to oxide base) of 5-33 SiO2, 20-50 Al2O3, 5-40 MgO, 0-15 B2O3, 0.1-30 Y2O3, Ln2O3, As2O3, Nb2O3 and/or Sc2O3 and 0-10 P2O5. The inventive armour material can also be reinforced with inorganic reinforcing fibres in a quantity of 5-65% by weight, preferably consisting of C, SiC, Si3N4, Al2O3, ZrO2 or Sialon. Said armour material is characterised in that it exhibits a high elasticity modulus and is producible from green glass without to fear a premature crystallisation.

Sintered glass ceramic and method for producing the same

The invention provides a method for producing a glass ceramic comprising the steps of melting a starting glass that is free from alkali, except for incidental contamination, and that contains at least one garnet-forming agent and at least one oxide of a lanthanoid; grinding the starting glass to produce a glass frit; molding by pressing and sintering the glass frit until at least one garnet phase containing lanthanoids is formed. A glass ceramic produced in this way may contain 5-50% by weight of SiO2, 5-50% by weight of Al2O3 and 10-80% by weight of at least one oxide selected from the group formed by Y2O3, Lu2O3, Sc2O3, Gd2O3, Yb2O3, Ce2O3, as well as 0.1-30% by weight of at least one oxide selected from the group formed by B2O3, Th2O3, and oxides of the lanthanoids, except Lu2O3, Gd2O3, Yb2O3, Ce2O3. Such a glass ceramic is suited especially for down conversion of excitation radiation in the blue and in the UV region of the spectrum.

Glass ceramic

A glass ceramic is specified, with a crystalline phase consisting predominantly of BPO 4 , and preferably exclusively of BPO 4 . The glass ceramic contains 10 to 50 wt.-% SiO 2 , 5 to 40 B 2 O 3 , 25 to 75 wt.-% P 2 O 5 , up to 5 wt.-% refining agents, up to 1 wt.-% impurities, and 0.1 to 10 wt.-% of at least one constituent selected from the group of M3 2 O 3 , M5 2 O 5 and M4O 2 , wherein M3 is an element selected from the group of the lanthanoids, yttrium, iron, aluminum, gallium, indium and thallium; wherein M5 is an element selected from the group of vanadium, niobium and tantalum and wherein M4 is an element selected from the group of titanium, zirconium, hafnium and cerium. The glass ceramic is advantageously suitable for being coated with semiconductor materials.

Solid-state light source

The invention describes a solid-state light source comprising a solid-state emitter designed for emitting light energy, which preferably has an LED, a luminescent light conversion medium, made from glass or glass ceramics, for converting emitted light energy to light energy of a different frequency spectrum, and a coupling medium for decoupling the light energy to an ambient medium, such as air, the light conversion medium having a refractive index ncs, selected as a function of the refractive index nHL of the solid-state emitter in the range of 0.7·(nHL2)1/3 to 1.3·(nHL2)1/3.

Metal colloid-colored glass ceramic and colorless glass convertible into same

A colorless transparent colloid-former-containing glass that is convertible into a colorless transparent glass ceramic or a metal colloid-colored glass ceramic via respective heat treatments contains a combination of one or more metal colloid formers and one or more redox partners. The metal colloid formers are compounds containing Au, Ag, As, Bi, Nb, Cu, Fe, Pd, Pt, Sb and/or Sn. The redox partners are compounds containing As, Ce, Fe, Mn, Sb, Sn and/or W, with the proviso that the redox partner must be different from the metal colloid former. 1. A colorless transparent colloid-former-containing glass that is convertible into a transparent colorless glass ceramic or a metal colloid-colored glass ceramic , said colorless transparent colloid-former-containing glass comprising a combination of at least one metal colloid former and at least one redox partner;wherein said at least one metal colloid former contains at least one metal selected from the group consisting of Au, Ag, As, Bi, Nb, Cu, Fe, Pd, Pt, Sb and Sn and said at least one redox partner contains at least one element selected from the group consisting of As, Ce, Fe, Mn, Sb, Sn and W;with the proviso that the at least one metal colloid former and the at least one redox partner are different from each other.2. The colloid-former-containing glass as defined in claim 1 , containing substantially no halides.3. The colloid-former-containing glass as defined in claim 1 , which is free of sulfur.4. The colloid-former-containing glass as defined in claim 1 , containing substantially no nickel.5. The colloid-former-containing glass as defined in claim 1 , containing substantially no cobalt.6. The colloid-former-containing glass as defined in claim 1 , which is convertible into the transparent colorless glass ceramic by ceramicizing at ceramicizing temperatures up to a first maximum temperature (T) and which is convertible into the metal colloid-colored glass ceramic by ceramicizing at ceramicizing temperatures up to a ...

Glass ceramic

A glass ceramic is specified, with a crystalline phase consisting predominantly of BPO 4 , and preferably exclusively of BPO 4 . The glass ceramic contains 10 to 50 wt.-% SiO 2 , 5 to 40 B 2 O 3 , 25 to 75 wt.-% P 2 O 5 , up to 5 wt.-% refining agents, up to 1 wt.-% impurities, and 0.1 to 10 wt.-% of at least one constituent selected from the group of M3 2 O 3 , M5 2 O 5 and M4O 2 , wherein M3 is an element selected from the group of the lanthanoids, yttrium, iron, aluminum, gallium, indium and thallium; wherein M5 is an element selected from the group of vanadium, niobium and tantalum and wherein M4 is an element selected from the group of titanium, zirconium, hafnium and cerium. The glass ceramic is advantageously suitable for being coated with semiconductor materials.

Sintered glass ceramic and method for producing the same

The invention provides a method for producing a glass ceramic comprising the steps of melting a starting glass that is free from alkali, except for incidental contamination, and that contains at least one garnet-forming agent and at least one oxide of a lanthanoid; grinding the starting glass to produce a glass frit; molding by pressing and sintering the glass frit until at least one garnet phase containing lanthanoids is formed. A glass ceramic produced in this way may contain 5-50 % by weight of SiO2, 5-50 % by weight of Al2O3 and 10-80 % by weight of at least one oxide selected from the group formed by Y2O3, Lu2O3, Sc2O3, Gd2O3, Yb2O3, Ce2O3, as well as 0.1-30% by weight of at least one oxide selected from the group formed by B2O3, Th2O3, and oxides of the lanthanoids, except Lu2O3, Gd2O3, Yb2O3, Ce2O3. Such a glass ceramic is suited especially for down conversion of excitation radiation in the blue and in the UV region of the spectrum.

Glass ceramic and method of producing the same

A glass ceramic comprises (in wt.-% on oxide basis): SiO 2 35 to 60, B 2 O 3 >4 to 10, P 2 O 5 0 to 10, Al 2 O 3 16.5 to 40, TiO 2 1 to 10, Ta 2 O 5 0 to 8, Y 2 O 3 0 to 6, ZrO 2 1 to 10, MgO 6 to 20, CaO 0 to 10, SrO 0 to 4, BaO 0 to 8, ZnO 0 to 4, SnO 2 +CeO 2 0 to 4, SO 4 2− +Cl − 0 to 4, wherein the total content (SnO 2 +CeO 2 +SO 4 2− +Cl − ) is between 0.01 and 4 wt.-%. The glass ceramic may be processed by the float glass method, may be transparent and is, inter alia, suitable as a substrate for thin film semiconductors, in particular for display applications, solar cells etc.

Metal colloid-colored glass ceramic and colorless glass convertible into same

The colorless transparent colloid-former-containing glass that is convertible into a colorless transparent glass ceramic or a metal colloid-colored glass ceramic via respective heat treatments contains a combination of one or more metal colloid formers and one or more redox partners. The metal colloid formers are compounds containing Au, Ag, As, Bi, Nb, Cu, Fe, Pd, Pt, Sb and/or Sn. The redox partners are compounds containing As, Ce, Fe, Mn, Sb, Sn and/or W, with the proviso that the redox partner must be different from the metal colloid former.

Method for producing a glass ceramic having a garnet phase

The invention proposes a method for producing glass ceramics which is particularly well suited as light conversion material, especially for down conversion. One initially produces a starting glass, containing (on an oxide basis) 5-50% by weight of SiO2, 5-50% by weight of Al2O3 and 10-80% by weight of at least one oxide selected from the group formed by Y2O3, Lu2O3, Sc2O3, Gd2O3, Yb2O3, Ce2O3, as well as 0.1-30% by weight of at least one oxide selected from the group formed by B2O3, Th2O3, and oxides of the lanthanoids, except Lu2O3, Gd2O3, Yb2O3, Ce2O3. Thereafter, the material is heated up for ceramization at a heating rate of at least 100 K/min to a temperature in the range of between 1000° C. to 1400° C. until crystallites are formed that contain a garnet phase. Thereafter, the material is cooled down to room temperature. Alternatively, controlled cooling-down from the molten state is possible.

ARMOR MATERIAL MADE OF GLASS CERAMICS

The invention relates to a glass ceramic armour material consisting (in % by weight in relation to oxide base) of 5-33 SiO 2 , 20-50 Al 2 O 3 , 5-40 MgO, 0-15 B 2 O 3 , 0.1-30 Y 2 O 3 , Ln 2 O 3 , As 2 O 3 , Nb 2 O 3 and/or Sc 2 O 3 and 0-10 P 2 O 5 . The inventive armour material can also be reinforced with inorganic reinforcing fibres in a quantity of 5-65% by weight, preferably consisting of C, SiC, Si 3 N 4 , Al 2 O 3 , ZrO 2 or Sialon. Said armour material is characterised in that it exhibits a high elasticity modulus and is producible from green glass without to fear a premature crystallisation.

Thin glass substrate, method and apparatus for its production

A thin glass substrate, as well as a method and an apparatus are provided. The glass substrate has a glass having first and second main surfaces and elongated elevations on one of the main surfaces. The elevations rise in a normal direction, have a longitudinal extent that is greater than two times a transverse extent, and have a height, on average, that is less than 100 nm, and with a transverse extent of the elevation smaller than 40 mm. The method includes melting a glass, hot forming the glass, and adjusting a viscosity of the glass so that for the viscosity η1 for a first stretch over a first distance of up to 1.5 m downstream of a flow rate control component and y1 indicating a second distance to a location immediately downstream the flow rate control component the equation lg η1(y1)/dPa·s=(lg η01/dPa·s+a1(y1)) applies.

Process for producing a highly transparent impact-resistant glass ceramic

The process for producing a transparent lithium aluminosilicate glass ceramic plate includes ceramicizing a green glass body of the LiO—AlO—SiOsystem using a ceramization program, which includes heating it, for the purpose of nucleation, to a temperature of 750° C.±20° C. and maintaining the temperature for 20±15 minutes, further heating the green glass body, for the purpose of ceramization, to a temperature of 900±20° C. and maintaining the to temperature for 20±15 minutes and then cooling to room temperature. The transparent plate has a thermal expansion coefficient (CTE) from −0.15×10/K to +0.15×10/K at 30 to 700° C. and a brightness value observed at an angle of 2° of ≧80 for a -mm thick plate for transmitted normal light. 2. The process according to claim 1 , wherein said transparent plate has a thermal expansion coefficient (CTE) from −0.15×10/K to +0.15×10/K at 30 to 700° C.3. The process according to claim 2 , wherein said thermal expansion coefficient (CTE) is from −0.05×10/K to −0.10×10/K at 30 to 700° C.4. The process according to claim 1 , where said composition comprises from 40 to 130 ppm of said FeO.6. The process according to claim 1 , wherein the transparent plate has a brightness value for transmitted normal light observed at an angle of 2° of ≧80 for a plate thickness of 4 mm. This is a divisional of U.S. patent application Ser. No. 12/616,982, filed on Nov. 12, 2009, which claims priority of invention based on German Patent Application 10 2008 043 718.2 filed on Nov. 13, 2008 in Germany. The aforesaid German Patent Application contains subject matter described and claimed herein below.The inventions described herein comprise a transparent plate made of lithium aluminosilicate glass ceramic having a high transmission, a process for making same and also transparent plate laminates comprising at least one of the plates of the lithium aluminosilicate glass ceramic according to the invention and the use thereof as armored glass or in bullet-proof ...

Highly transparent impact-resistant plate laminate and armored or bulletproof glass and articles made with same

The armored or bulletproof glass include a transparent plate laminate, which includes one or more transparent glass ceramic plates made from a green glass body of the LiO—AlO—SiOsystem, optionally one or more additional plates made of plastic material, and optionally one or more glass plates. The glass ceramic plate preferably has a thermal expansion coefficient of −0.05×10/K to −0.10×10/K at 30 to 700° C. and a brightness value for transmitted normal light at an angle of 2°≧80 for a 4-mm thick plate. The transparent plate laminate preferably has a total of 4 to 8 plates and a thickness between 40 and 80 mm. A bulletproof vest, a fire prevention glazing, a fireplace viewing window pane, a cooktop, a magnetic storage plate or a substrate for semiconductor materials also advantageously include the transparent plate laminate described here. 2. The armored glass or bulletproof glass according to claim 1 , wherein said at least one plate (a) has a thermal expansion coefficient (CTE) from −0.15×10/K to +0.15×10/K at 30 to 700° C.3. The armored glass or bulletproof glass according to claim 2 , wherein said thermal expansion coefficient (CTE) is from −0.05×10/K to −0.10×10/K at 30 to 700° C.4. The armored glass or bulletproof glass according to claim 1 , where said composition of said at least one plate (a) comprises from 40 to 130 ppm of said FeO.6. The armored glass or bulletproof glass according to claim 1 , wherein the at least one plate (a) has a brightness value for transmitted normal light observed at an angle of 2° of ≧80 for a plate thickness of 4 mm.7. The armored glass or bulletproof glass according to claim 1 , containing a total number of from 2 to 10 of said plates (a) claim 1 , (b) and (c).8. The armored glass or bulletproof glass according to claim 1 , wherein said transparent plate laminate has a total thickness of 30 to 100 mm; a respective thickness of each of said at least one plate (a) is in a range from 2 to 20 mm; a respective thickness of each of ...

HIGHLY TRANSPARENT IMPACT-RESISTANT GLASS CERAMIC

The present invention describes a transparent plate of lithium aluminosilicate glass ceramic showing a high transmission, a process for producing same and transparent plate laminates comprising at least one plate of the lithium aluminosilicate glass ceramic of the invention and the use thereof as armored glass or bullet-proof vest.

Method for the production of a protection device

A method for the production of protection devices is provided. The method includes the step of providing a tile package. The provision of the tile package includes the steps of: laminating at least one board of a tile material onto a polymer foil; scoring the board on the side which is opposite to the polymer foil; and fracturing the board along the scoring lines for achieving a plurality of tiles which are fixed on the polymer foil.

Vehicle glass with increased resilience to environmental influences

A vehicle glass sheet is provided that includes a borosilicate glass with a thickness between 1.1 mm and 5.4 mm and a two-dimensional area for a sensor assigned to this two-dimensional area. The two-dimensional area has an inclination (α) with respect to an upward direction (S) perpendicular to a main direction of movement (V) of the vehicle that is in a range between 35° and 65°.

Glass ceramic armor material

Antiballistic armor is provided that includes a glass-ceramic component having 50 to 70 weight percent SiO2, 15 to 25 weight percent Al2O3, 0.5 to 5 weight percent ZrO2, 0.1 to 10 weight percent Li2O, 1 to 5 weight percent TiO2. The glass ceramic component has a main crystalline phase that comprises keatite mixed crystal in a compositional range of LiAlSi2O6 to LiAlSi4O10.

Glass ceramic and method of producing the same

A glass ceramic comprises (in wt.-% on oxide basis): SiO2 35 to 60, B2O3>4 to 10, P2O5 0 to 10, Al2O3 16.5 to 40, TiO2 1 to 10, Ta2O5 0 to 8, Y2O3 0 to 6, ZrO21 to 10, MgO 6 to 20, CaO 0 to 10, SrO 0 to 4, BaO 0 to 8, ZnO 0 to 4, SnO2+CeO2 0 to 4, SO42−+Cl− 0 to 4, wherein the total content (SnO2+CeO2+S042−+Cl−) is between 0.01 and 4 wt.-%. The glass ceramic may be processed by the float glass method, may be transparent and is, inter alia, suitable as a substrate for thin film semiconductors, in particular for display applications, solar cells etc.

Thin glass substrate, in particular a borosilicate glass thin glass substrate, method and apparatus for its production

Thin glass substrates are provided. Also provided are methods and apparatuses for the production thereof and provides a thin glass substrate of improved optical quality. The method includes, after the melting and before a hot forming process, adjusting the viscosity of the glass that is to be formed or has at least partially been formed is in a defined manner for the thin glass substrate to be obtained. The apparatus includes a device for melting, a device for hot forming, and also a device for defined adjustment of the viscosity of the glass to be formed into a thin glass substrate, and the device for defined adjustment of the viscosity of the glass to be formed into a thin glass substrate is arranged upstream of the device for hot forming.

GLASS CERAMIC ARMOR MATERIAL

Antiballistic armor is provided that includes a glass-ceramic component having 50 to 70 weight percent SiO2, 15 to 25 weight percent Al2O3, 0.5 to 5 weight percent ZrO2, 0.1 to 10 weight percent Li2O, 1 to 5 weight percent TiO2. The glass ceramic component has a main crystalline phase that comprises keatite mixed crystal in a compositional range of LiAlSi2O6 to LiAlSi4O10.

Thin flat glass for display purposes and method of cutting the thin flat glass into display sheets

To improve the cutting properties, especially the cutting rate, of thin flat glass by means of a laser cutting beam from a Nd:YAG solid-state laser, the flat glass is provided during its manufacture with at least one additive ingredient that effectively absorbs radiation at a wavelength of 1.064 μm. Preferably the additive ingredient is preferably samarium oxide (Sm2O3). A method of cutting through a flat glass sheet whose composition contains at least one additive ingredient that absorbs a significant amount of radiation at a wavelength of 1.064 μm, which includes cutting the flat glass sheet with the focused radiation of a Nd:YAG laser, is also part of the present invention.

METHOD FOR THE PRODUCTION OF A PROTECTION DEVICE

A method for the production of protection devices is provided. The method includes the step of providing a tile package. The provision of the tile package includes the steps of: laminating at least one board of a tile material onto a polymer foil; scoring the board on the side which is opposite to the polymer foil; and fracturing the board along the scoring lines for achieving a plurality of tiles which are fixed on the polymer foil. 1. A method for the preparation of a protection device , comprising providing a tile package , wherein the step of providing the tile package comprises:laminating at least one board of a tile material onto a polymer foil;scoring the at least one board on a side which is opposite to the polymer foil; andfracturing the board along scoring lines formed by the scoring to form resulting tiles, wherein the resulting tiles remain fixed on the polymer foil.2. The method according to claim 1 , wherein the at least one board has burlings on at least one side onto which the polymer foil is applied.3. The method according to claim 1 , wherein the protection device comprises at least two layers claim 1 , each of the at least two layers comprising at least one tile package each comprising a tile layer and a polymer foil claim 1 , wherein the tiles adjoin at gaps and are mounted together on the polymer foil claim 1 , wherein the intersection points of the gaps of each tile package are oppositely arranged to tiles of the respective following tile package.4. The method according to claim 1 , wherein the resulting tiles are fiber-reinforced.5. The method according to claim 1 , further comprising arranging at least one cover board as a further layer on an exposure side of the protection device.6. The method according to claim 1 , further comprising arranging at least one backing layer on an object side of the protection device.7. The method according to claim 1 , wherein the resulting tiles consist of glass or glass ceramic.8. The method according to ...

Lighting device, particularly a high-pressure metal halide lamp

The invention is directed to a lighting device, particularly a high-pressure metal halide lamp, wherein a material combination of the body, frit and base materials is selected such that: a. the Coefficient of Thermal Expansion of the material of the frit material (CTEfrit) matches with the Coefficients of Thermal Expansion of the material of the lamp base (CTEbase) and the material of the body (CTEbody), respectively, or, b. the material of the frit (CTEfrit) bridges with the Coefficients of Thermal Expansion of the material of the lamp base (CTEbase) and the material of the body (CTEbody), respectively, at least at the joining surfaces of the body, frit and base materials, to sustain a hermetic bonding and withstand pressure and temperature conditions.

Use of Glass Ceramics

The invention relates to novel uses of glass ceramics, wherein glass ceramics, in particular, in the form of a glass ceramic tube, are used. Said glass ceramics contain 0—less than 4 wt % P205 and 0 less than 8 wt-% CaO. The tubes can be used in multiple areas of application and/or in multiple types of lamps, for example in general lighting or car lights and in heat radiators, such as halogen lamps or incandescent lamps, and/or in high pressure discharge lamps or low pressure discharge lamps. The glass ceramics, can also, in particular, be minimised in order to form known backlighting in conjunction with background lighting of flat screens. Said type of glass ceramics have excellent spectral transmission in the visible wave length rang and are solarisation stable and absorb strong UV light.

LAMINATED, TRANSPARENT SET OF PANES, PROCESS FOR PRODUCING AND BENDING SAME, AND USE THEREOF

Laminated, transparent set of panes made of brittle materials and interleaved laminated films, wherein the brittle materials are various glasses, special glasses, glass-ceramics, transparent ceramics and crystalline materials, process for producing and bending the set of panes and films, and its use thereof, as a bulletproof, unbreakable and shockproof glazing with a low weight per unit area.

CLASS SUBSTRATE FOR VEHICLE GLAZING, IN PARTICULAR FOR THE WINDSCREEN OF A VEHICLE

The invention relates to a method for producing a glass substrate for vehicle glazing, in particular for a windscreen of a vehicle, which comprises hot forming of a borosilicate glass, wherein in a hot forming section, at least during stretching of the glass () in the flow direction or longitudinal direction of movement of the glass (), an aging velocity Av of the glass () to be hot formed does not exceed 10 mm/s and an aging velocity Av of the glass preferably does not undershoot 3 mm/s, and also relates to glass substrates for vehicle glazing produced by such method as well as to windscreen projection devices and driver assistance systems comprising such glass substrates. 123-. (canceled)25. The method of claim 24 , wherein the aging velocity (Av) does not exceed 8 mm/s and does not undershoot 5 mm/s.26. The method of claim 24 , wherein the length of hot forming section extends in the flow direction of the glass from a first top roller defining a beginning of the hot forming section to a last top roller defining an end of the hot forming section.27. The method of claim 26 , further comprising:maintaining a viscosity of the borosilicate glass between log (η/dPa·s)=4.8 and log (η/dPa·s)=5.5 at the first top roller; andmaintaining a viscosity of the borosilicate glass between log (η/dPa·s)=7.1 and log (η/dPa·s)=7.6 at the last top roller.28. The method of claim 24 , wherein the width Bg is altered by less than 3%.29. The method of claim 24 , further comprising exposing the borosilicate glass to a forming gas atmosphere containing a hydrogen content from 2 vol % to 14 vol %.33. The method of claim 24 , wherein the glass substrate has a substantially wedge-shaped thickness variation (K) of less than 100 μm over a length of 1 m perpendicular to the drawing direction.34. The method of claim 24 , wherein the glass substrate has a warpage (V) of less than 600 μm over a length of 1 m perpendicular to the drawing direction.35. A method for producing a glass substrate for ...

Bonding system, and a bonding system method for the fabrication of lamps

The invention relates to a bonding system method and for the fabrication of a bonding system, as well as to a light device formed using the method of the invention. The bonding of the two components which are to be joined, whereby at least one of the two components consists at least partially, preferably completely of glass or glass-ceramics, in other words of a glass-based material, is achieved by way of the following methods on their own merit. Through material sealing when utilizing an inorganic glass-based solder material or through sealing mechanisms without solder material by utilizing tensile stress and/or compressive strain conditions, at least in a high temperature range.

Thin glass substrate, method and apparatus for its production

A thin glass substrate, as well as a method and an apparatus are provided. The glass substrate has a glass having first and second main surfaces and elongated elevations on one of the main surfaces. The elevations rise in a normal direction, have a longitudinal extent that is greater than two times a transverse extent, and have a height, on average, that is less than 100 nm, and with a transverse extent of the elevation smaller than 40 mm. The method includes melting a glass, hot forming the glass, and adjusting a viscosity of the glass so that for the viscosity η1 for a first stretch over a first distance of up to 1.5 m downstream of a flow rate control component and y1 indicating a second distance to a location immediately downstream the flow rate control component the equation lg η1(y1)/dPa·s=(lg η01/dPa·s+a1(y1)) applies.

VEHICLE GLASS WITH INCREASED RESILIENCE TO ENVIRONMENTAL INFLUENCES

A vehicle glass sheet is provided that includes a borosilicate glass with a thickness between 1.1 mm and 5.4 mm and a two-dimensional area for a sensor assigned to this two-dimensional area. The two-dimensional area has an inclination (α) with respect to an upward direction (S) perpendicular to a main direction of movement (V) of the vehicle that is in a range between 35° and 65°.

Highly transparent impact-resistant plate laminate and armored or bulletproof glass and articles made with same

The armored or bulletproof glass include a transparent plate laminate, which includes one or more transparent glass ceramic plates made from a green glass body of the LiO—AlO—SiOsystem, optionally one or more additional plates made of plastic material, and optionally one or more glass plates. The glass ceramic plate preferably has a thermal expansion coefficient of −0.05×10/K to −0.10×10/K at 30 to 700° C. and a brightness value for transmitted normal light at an angle of 2°≧80 for a 4-mm thick plate. The transparent plate laminate preferably has a total of 4 to 8 plates and a thickness between 40 and 80 mm. A bulletproof vest, a fire prevention glazing, a fireplace viewing window pane, a cooktop, a magnetic storage plate or a substrate for semiconductor materials also advantageously include the transparent plate laminate described here. 2. The armored glass or bulletproof glass according to claim 1 , wherein said at least one plate (a) has a thermal expansion coefficient (CTE) from −0.15×10/K to +0.15×10/K at 30 to 700° C.3. The armored glass or bulletproof glass according to claim 2 , wherein said thermal expansion coefficient (CTE) is from −0.05×10/K to −0.10×10/K at 30 to 700° C.4. The armored glass or bulletproof glass according to claim 1 , where said composition of said at least one plate (a) comprises from 40 to 130 ppm of said FeO.6. The armored glass or bulletproof glass according to claim 1 , wherein the at least one plate (a) has a brightness value for transmitted normal light observed at an angle of 2° of ≧80 for a plate thickness of 4 mm.7. The armored glass or bulletproof glass according to claim 1 , containing a total number of from 2 to 10 of said plates (a) claim 1 , (b) and (c).8. The armored glass or bulletproof glass according to claim 1 , wherein said transparent plate laminate has a total thickness of 30 to 100 mm; a respective thickness of each of said at least one plate (a) is in a range from 2 to 20 mm; a respective thickness of each of ...

SINTERED GLASS CERAMIC AND METHOD FOR PRODUCING THE SAME

The invention provides a method for producing a glass ceramic comprising the steps of melting a starting glass that is free from alkali, except for incidental contamination, and that contains at least one garnet-forming agent and at least one oxide of a lanthanoid; grinding the starting glass to produce a glass frit; molding by pressing and sintering the glass frit until at least one garnet phase containing lanthanoids is formed. A glass ceramic produced in this way may contain 5-50 % by weight of SiO2, 5-50 % by weight of Al2O3 and 10-80 % by weight of at least one oxide selected from the group formed by Y2O3, Lu2O3, Sc2O3, Gd2O3, Yb2O3, Ce2O3, as well least one oxide selected from the group formed by B2O3, Th2O3, and oxides of the lanthanoids, except Lu2O3, Gd2O3, Yb2O3, Ce2O3. Such a glass ceramic is suited especially for down conversion of excitation radiation in the blue and in the UV region of the spectrum.

Crystallisable glass and the use thereof for producing extremely solid and break resistant glass-ceramics having an easily polished surface

The invention relates to crystallisable aluminosilicate magnesium-containing glass which is used for producing extremely solid and break-resistant glass-ceramics having an easily polished surface. The inventive crystallisable glass contains 5-33 mass % of SiO2, 25-40 mass % of Al2O3, 5-25 mass % of MgO, 0-15 mass % of B2O3, 0.1-30 mass % of Y2O3, Ln2O3, As2O3 and/or Nb2O5 and 0.1-10 mass % of P2O5.

Conversion material

The invention describes a glass and a glass-ceramic which at least includes the constituents SiO2, Al2O3 and Y2O3 and is preferably doped with rare earth ions. The weight ratio between the weight of Y2O3 and the total weight of SiO2, Al2O3 and Y2O3 is at least 0.2, preferably at least 0.4 or more. The rare earth ions can preferably be incorporated in crystal phases which are precipitated out of glass with a high yttrium content.

Reactive armor

An exemplary embodiment provides transparent reactive armor systems that are far lighter than conventional reactive armor systems due to the materials used therein. The reactive armor of embodiments of the present invention is composed of at least three layers. These layers are-from the outside to the inside-the front plate, the explosives layer and the explosives substrate as well as optional further inside layers with antiballistic effects. Consequently, the explosives substrate can be part of a multilayer laminate.

Crystallizable glass and the use thereof for producing extremely solid and break resistant glass-ceramics having an easily polished surface

The invention relates to crystallizable aluminosilicate magnesium-containing glass which is used for producing extremely solid and break-resistant glass-ceramics having an easily polished surface. The inventive crystallizable glass contains 5-33 mass % of SiO₂, 25-40 mass % of Al₂O₃, 5-25 mass % of MgO, 0-15 mass % of B₂O₃, 0.1-30 mass % of Y₂O₃, Ln₂O₃, As₂O₃ and/or Nb₂O₅ and 0.1-10 mass % of P₂O₅.

METHOD FOR PRODUCING A GLASS CERAMIC HAVING A GARNET PHASE

The invention proposes a method for producing glass ceramics which is particularly well suited as light conversion material, especially for down conversion. One initially produces a starting glass, containing (on an oxide basis) 5-50% by weight of SiO2, 5-50 % by weight of Al2O3 and 10-80% by weight of at least one oxide selected from the from the group formed by Y2O3, Lu2O3, Sc2O3, Gd2O3, Yb2O3, Ce2O3, as well as 0.1-30% by weight of at least one oxide selected from the group formed by B2O3, Th2O3, and oxides of the lanthanoids, except Lu2O3, Gd2O3, Yb2O3, Ce2O3. Thereafter, the material is heated up for ceramization at a heating rate of at least 100 K/min to a temperature in the range of between 1000° C. to 1400° C. until crystallites are formed that contain a garnet phase. Thereafter, the material is cooled down to room temperature. Alternatively, controlled cooling-down from the molten state is possible.

Process for producing a highly transparent impact-resistant glass ceramic

The process for producing a transparent lithium aluminosilicate glass ceramic plate includes ceramicizing a green glass body of the Li 2 O—Al 2 O—SiO 2 system using a ceramization program, which includes heating it, for the purpose of nucleation, to a temperature of 750° C.±20° C. and maintaining the temperature for 20±15 minutes, further heating the green glass body, for the purpose of ceramization, to a temperature of 900±20° C. and maintaining the to temperature for 20±15 minutes and then cooling to room temperature. The transparent plate has a thermal expansion coefficient (CTE) from −0.15×10 −6 /K to +0.15×10 −6 /K at 30 to 700° C. and a brightness value observed at an angle of 2° of ≧80 for a 4 -mm thick plate for transmitted normal light.

Highly transparent impact-resistant glass ceramic

The transparent glass ceramic plate has a thermal expansion coefficient (CTE) of 0.05 to 0.1×106/K at 30 to 700° C. and a composition, in wt. %, consisting of: Li2O, 3.0-4.5; Al2O3, 18.0-24.0; SiO2, 55.0-70.0; TiO2, 0.01-2.3; ZrO2, 0.01-2.0; TiO2+ZrO2, 0.5-4.3; SnO2, 0-0.2; MgO, 0-0.8; BaO, 0-3; ZnO, 0-2.5; Na2O, 0-1.5; As2O3, 0.3-0.9; and Fe2O3, 0.004 to 0.02. A transparent plate laminate, which is used as armor or in a bullet-proof vest and which contains one or more of this glass ceramic plate together with optional glass and/or plastic plates, and a process for making the glass ceramic plate, are also described.

Light device including an outside bulb, especially a high pressure discharge lamp

A light device, preferably a metal halide high pressure discharge lamp, which includes a first body which has a light element, a second body which encompasses the first body, whereby the second body consists essentially of an Al-silicate glass, for example a hard glass. The Al-silica glass has a Tg of >600° C., preferred >650° C., especially preferred >700° C., particularly preferred >750° C., and a thermal expansion coefficient α20/300>0, preferably in the range of 3≦α20/300≦6, particularly preferred 3.5≦α20/300≦5.5 ...

TRANSPARENT GLASS/POLYMER COMPOSITE

A transparent device for protection from an action of shock, projectiles, fragments or shock waves is provided. The device is a laminate having brittle-fracture, transparent materials that are joined together by way of transparent intermediate layers of organic polymers. The laminate is closed on the protective side facing away from the side of action by a fragment-protective layer that is formed as a transparent polymer layer in a thickness of 0.5 mm to 12 mm. The laminate has facing the side of action a chemically prestressed, brittle-fracture panel that is at a distance of 3 mm to 20 mm from the side of action. 17-. (canceled)8. A transparent device for protection from an action of shock , projectiles , fragments or shock waves , comprising:a laminate having four brittle-fracture, transparent panels that are joined together by transparent intermediate layers of casting resin or polymer films, the laminate having a total thickness of at least 60 mm and the laminate being closed, on a protective side facing away from a side of action, by a fragment-protective layer having a thickness of 0.5 mm to 12 mm, which is formed as a transparent polymer layer, wherein, in the laminate, one of the four brittle-fracture, transparent panels comprises a first, chemically prestressed, brittle-fracture panel that has a surface that is disposed at a distance of 6 mm to 20 mm from the side of action; anda polymer layer of a thickness between 2 mm and 15 mm is disposed via a polyurethane layer between two of the four brittle-fracture, transparent panels.9. The device according to claim 8 , wherein the first claim 8 , chemically prestressed claim 8 , brittle-fracture panel has a thickness between 3 mm and 15 mm.10. The device according to claim 8 , wherein the first claim 8 , chemically prestressed claim 8 , brittle-fracture panel comprises a glass panel selected from the group consisting of a soda-lime silicate glass panel claim 8 , aluminosilicate glass panel claim 8 , a ...

Thin glass substrate, in particular a borosilicate glass thin glass substrate, method and apparatus for its production

Thin glass substrates are provided. Also provided are methods and apparatuses for the production thereof and provides a thin glass substrate of improved optical quality. The method includes, after the melting and before a hot forming process, adjusting the viscosity of the glass that is to be formed or has at least partially been formed is in a defined manner for the thin glass substrate to be obtained. The apparatus includes a device for melting, a device for hot forming, and also a device for defined adjustment of the viscosity of the glass to be formed into a thin glass substrate, and the device for defined adjustment of the viscosity of the glass to be formed into a thin glass substrate is arranged upstream of the device for hot forming.

PROTECTIVE GLAZING COMPRISING TRANSPARENT CERAMICS

Armored glasses for windows in all kinds of vehicles, aircraft, missiles of all types, marine and underwater vehicles of all types and/or buildings and manufacturing methods are provided. The armored glass is a composite having at least one opto-ceramic layer having a front side and a rear side and a film of a transparent material disposed on the front and/or rear side of the opto-ceramic layer and integrally connected to the opto-ceramic layer so that the transparency of the composite is greater than the transparency of the opto-ceramic layer alone. The film of the transparent material renders roughnesses of the front and/or rear side of the opto-ceramic layer substantially optically ineffective. 1. A transparent armored glass composite , comprising:at least one sintered opto-ceramic layer having a front side and a rear side;a film of a transparent material disposed on the front side and/or on the rear side of the at least one sintered opto-ceramic layer to form a composite, wherein the film is integrally connected to the opto-ceramic layer so that a transparency of the composite is greater than a transparency of the at least one sintered opto-ceramic layer alone; anda glass or glass ceramic sheet is arranged on the front side or on the rear side, the glass or glass ceramic sheet having a roughness of less than 20 nm.2. The armored glass composite as claimed in the claim 1 , wherein claim 1 , prior to being disposed on the at least one sintered opto-ceramic layer claim 1 , the at least one sintered opto-ceramic layer has a transmittance claim 1 , as measured by PvK measuring method claim 1 , of less than 80% in a range of wavelengths from 350 nm to 800 nm.3. The armored glass composite as claimed in claim 1 , wherein the at least one sintered opto-ceramic layer has a roughness in a range of greater than 0.01 μm (Ra value) or of greater than 0.01 μm (RMS value).4. The armored glass composite as claimed in claim 1 , wherein the composite which in particular at least ...

THIN GLASS SUBSTRATE, METHOD AND APPARATUS FOR ITS PRODUCTION

A thin glass substrate, as well as a method and an apparatus are provided. The glass substrate has a glass having first and second main surfaces and elongated elevations on one of the main surfaces. The elevations rise in a normal direction, have a longitudinal extent that is greater than two times a transverse extent, and have a height, on average, that is less than 100 nm, and with a transverse extent of the elevation smaller than 40 mm. The method includes melting a glass, hot forming the glass, and adjusting a viscosity of the glass so that for the viscosity θ1 for a first stretch over a first distance of up to 1.5 m downstream of a flow rate control component and y1 indicating a second distance to a location immediately downstream the flow rate control component the equation lg η1(y1)/dPa·s=(lg η01/dPa·s+a1(y1)) applies. 1. A method for producing a thin glass substrate , comprising:melting a glass; and {'br': None, 'i': y', 'y, 'lg η1(1)/dPa·s=(lg η01/dPa·s+a1(1))'}, 'hot forming the glass into the thin glass sheet, wherein after the melting step and prior to hot forming or after partially hot forming, the method further comprises the step of adjusting a viscosity of the glass so that for the viscosity η1 for a first stretch over a first distance of up to 1.5 m downstream of a flow rate control component of the glass stream and y1 indicating a second distance to a location immediately downstream the flow rate control component the following equation applieswith 0 m≤y1≤1.5 m3.75 lg η01/dPa·s≤4.5a1(y1)=1.00/m*y1.2. The method of claim 1 , wherein the step of adjusting the viscosity comprises adjusting upstream of an inlet lip before the glass is delivered onto a metal bath.3. The method of claim 1 , wherein the step of adjusting the viscosity comprises adjusting the viscosity upstream of the flow rate control component before the glass is delivered onto a metal bath.4. The method of claim 1 , wherein the step of adjusting the viscosity comprises adjusting to a ...

TRANSPARENT AND LOW-DENSE GLASS-CERAMIC AND USE THEREOF

L'invention concerne une vitrocéramique transparente et peu dense, du système Li O-Al O -SiO , qui comporte des cristaux mixtes de quartz β en tant que principale phase cristalline, qui présente une masse volumique p inférieure à 2,5 g/cm , et qui contient, en pourcentages pondéraux rapportés aux oxydes, 3 à 4,5 % de Li O, 18 à 24 % de Al O , 55 à 70 % de SiO , 0,1 à moins de 2,3 % de TiO , 0,1 à moins de 1,8 % de ZrO , 0,2 à 4 % au total de TiO et ZrO , 0 à 1,5 % de BaO, 0 à 0,5 % de CaO, 1 à 6 % au total de MgO et ZnO, plus de 5 à 10 % de B O , 0 à moins de 1 % au total de Na O et K O et 0 à 1,5 % d'agents d'affinage usuels (SnO , As O , Sb O , CeO ). Une telle vitrocéramique présente un indice de clarté Y (A/2°), mesuré selon la norme DIN 5031, de plus de 80, et en particulier, plus de 87. The invention relates to a transparent and low-density glass-ceramic of the Li O-Al O -SiO system, which comprises β-quartz mixed crystals as the main crystalline phase, which has a density p of less than 2.5 g / cm. , which contains, in weight percent relative to the oxides, 3 to 4.5% of Li O, 18 to 24% of Al O, 55 to 70% of SiO, 0.1 to less than 2.3% of TiO, 0.1 to less than 1.8% ZrO, 0.2 to 4% total TiO and ZrO, 0 to 1.5% BaO, 0 to 0.5% CaO, 1 to 6% total of MgO and ZnO, more than 5 to 10% of BO, 0 to less than 1% in total of NaO and KO and 0 to 1.5% of usual refining agents (SnO, As O, Sb O, CeO). Such a glass-ceramic has a clarity index Y (A / 2 °), measured according to DIN 5031, of more than 80, and in particular, more than 87.

FRITTE GLASS CERAMIC AND PROCESS FOR PRODUCING THE SAME

Thin glass substrate, method and apparatus for its manufacture

Die Erfindung betrifft allgemein ein Dünnglassubstrat, ein Verfahren sowie eine Vorrichtung zu dessen Herstellung und es wird ein Dünnglassubstrat mit verbesserter optischer Qualität, ein Verfahren sowie eine Vorrichtung zu dessen Herstellung angegeben, wobei bei dem Verfahren nach dem Schmelzen und vor einer Heißformung die Viskosität des zu formenden oder zumindest teilweise geformten Glases für das zu erhaltende Dünnglassubstrat definiert eingestellt wird und die Vorrichtung eine Einrichtung zum Schmelzen, eine Einrichtung zur Heißformung sowie eine Einrichtung zur definierten Einstellung der Viskosität des zu einem Dünnglassubstrat zu formenden Glases umfasst und die Einrichtung zur definierten Einstellung der Viskosität des zu einem Dünnglassubstrat zu formenden Glases vor der Einrichtung zur Heißformung angeordnet ist. The invention relates generally to a thin glass substrate, a method and an apparatus for producing it, and a thin glass substrate with improved optical quality, a method and an apparatus for its preparation is given, wherein in the method after melting and before a hot forming the viscosity of forming or at least partially shaped glass is defined for the thin glass substrate to be obtained and the device comprises a device for melting, a device for hot forming and a device for defined adjustment of the viscosity of the glass to be formed into a thin glass substrate and the means for the defined adjustment of the viscosity of the glass to be formed into a thin glass substrate is arranged in front of the device for hot forming.

Metallkolloidgestärbte or colorless glass ceramic and in a metallkolloidgefärbte or colorless glass ceramic convertible colorless glass

Kolioidbildnerhaltiges, farblos transparentes, in eine farblose oder metallkolloidgefärbte Glaskeramik umwandelbares Glas, enthaltend (in Gew.-% auf Oxidbasis):SiO2 55,0 bis 75,0, bevorzugt 65,0 bis 70,0 Al2O3 18,0 bis 26,0, bevorzugt 18,0 bis 23,0 Li2O 1,5 bis 5,0, bevorzugt 3,4 bis 4,2 ZnO 0 bis 3,0, bevorzugt 0,8 bis 2,5 MgO 0 bis 2,5, bevorzugt 0 bis 2,0 CaO 0 bis 2,5, bevorzugt 0 bis 2,0 SrO 0 bis 2,5, bevorzugt 0 bis 2,0 Na2O 0 bis 1,5, bevorzugt 0 bis 0,8 K2O 0 bis 1,5, bevorzugt 0 bis 0,8 TiO2 0 bis 4,0, bevorzugt 0,5 bis 3,0 ZrO2 0 bis 4,0, bevorzugt 0,5 bis 2,7 P2O5 0 bis 8,0, bevorzugt 0 bis 3, oderSiO2 35,0 bis 65,0, bevorzugt 45,0 bis 62,0 Al2O3 15,0 bis 40,0, bevorzugt 15,0 bis 25,0 MgO 2,0 bis 20,0, bevorzugt 2,0 bis 10,0 ZnO 0 bis 15,0, bevorzugt 2,0 bis 15,0 BaO 0 bis 10,0, bevorzugt 0 bis 3,0 SrO 0 bis 10,0, bevorzugt 0 bis 3,0 TiO2 0 bis 10,0, bevorzugt 0,5 bis 8,0 ZrO2 0,5 bis 10,0, bevorzugt 0,5 bis 4,0 P2O5 0 bis 10,0, bevorzugt 0 bis 5,0 B2O3 0 bis 10,0, bevorzugt 0 bis ... Colioid-forming, colorlessly transparent glass that can be converted into a colorless or metal colloid-colored glass ceramic, containing (in% by weight on oxide basis): SiO2 55.0 to 75.0, preferably 65.0 to 70.0 Al2O3 18.0 to 26.0 , preferably 18.0 to 23.0 Li2O 1.5 to 5.0, preferably 3.4 to 4.2 ZnO 0 to 3.0, preferably 0.8 to 2.5 MgO 0 to 2.5, preferably 0 up to 2.0 CaO 0 to 2.5, preferably 0 to 2.0 SrO 0 to 2.5, preferably 0 to 2.0 Na2O 0 to 1.5, preferably 0 to 0.8 K2O 0 to 1.5, preferably 0 to 0.8 TiO2 0 to 4.0, preferably 0.5 to 3.0 ZrO2 0 to 4.0, preferably 0.5 to 2.7 P2O5 0 to 8.0, preferably 0 to 3, or SiO2 35 , 0 to 65.0, preferably 45.0 to 62.0 Al2O3 15.0 to 40.0, preferably 15.0 to 25.0 MgO 2.0 to 20.0, preferably 2.0 to 10.0 ZnO 0 to 15.0, preferably 2.0 to 15.0 BaO 0 to 10.0, preferably 0 to 3.0 SrO 0 to 10.0, preferably 0 to 3.0 TiO2 0 to 10.0, preferably 0, 5 to 8.0 ZrO2 0.5 to 10.0, preferably 0.5 to 4.0 P2O5 0 to 10.0, preferably 0 to 5.0 B2O3 0 to 10.0, ...

Glass ceramic tank material

Es ist Aufgabe der Erfindung, eine Glaskeramik-Komponente für eine Schutzeinrichtung gegen ballistische Einwirkungen zu schaffen, die bei einfacher Herstellung eine verbesserte Schutzwirkung vor Mehrfachbeschuss bewirkt. Dazu ist eine Glaskeramik-Komponente für eine antiballistische Panzerung vorgesehen, die folgende Bestandteile enthält: 50 bis 70 Gewichtsprozent SiO<SUB>2</SUB>, 15 bis 25 Gewichtsprozent Al<SUB>2</SUB>O<SUB>3</SUB>, 0,5 bis 5 ZrO<SUB>2</SUB>, 0,1 bis 10 Gewichtsprozent Li<SUB>2</SUB>O, 1 bis 5 Gewichtsprozent TiO<SUB>2</SUB>, und wobei die Hauptkristallphase der Glaskeramik Keatit-Mischkristall im Zusammensetzungsbereich LiAlSi<SUB>2</SUB>O<SUB>6</SUB>-LiAlSi<SUB>4</SUB>O<SUB>10</SUB> enthält. It is an object of the invention to provide a glass-ceramic component for a protective device against ballistic effects, which causes an easier protection against repeated fire with a simple production. For this purpose, a glass-ceramic component for an anti-ballistic armor is provided, which contains the following constituents: 50 to 70 percent by weight of SiO <SUB> 2 </ SUB>, 15 to 25 percent by weight of Al <SUB> 2 </ SUB> O <SUB> 3 < / SUB>, 0.5 to 5 ZrO <SUB> 2 </ SUB>, 0.1 to 10 wt% Li <SUB> 2 </ SUB> O, 1 to 5 wt% TiO <SUB> 2 </ SUB>, and wherein the main crystal phase of the glass-ceramic contains keatite solid solution in the composition range LiAlSi <SUB> 2 </ SUB> O <SUB> 6 </ SUB> -LiAlSi <SUB> 4 </ SUB> O <SUB> 10 </ SUB>.

VITROCERAMIC LAS TINT IN BLACK

Metallkolloidgefärbte glass-ceramic and convertible into a metallkolloidgefärbte glass-ceramic colorless glass

Es wird ein kolloidbildnerhaltiges farbloses transparentes, in eine farblose oder metallkolloidgefärbte Glaskeramik umwandelbares Glas, insbesondere ein Lithium- oder Magnesium-Alumosilikatglas, beschrieben, das eine Kombination aus wenigstens einem Metallkolloidbildner aus der Gruppe Au, Ag, As, Bi, Nb, Cu, Fe, Pd, Pt, Sb und Sn in Kombination mit wenigstens einem Redox-Partner aus der Gruppe As, Ce, Fe, Mn, Sb, Sn, W enthält, wobei Metallkolloidbildner und Redox-Partner nicht identisch sein dürfen. A colloid-containing, colorless, transparent glass which can be converted into a colorless or metal-colloid-colored glass ceramic, in particular a lithium or magnesium aluminosilicate glass, which comprises a combination of at least one metal colloid former selected from the group consisting of Au, Ag, As, Bi, Nb, Cu, Fe , Pd, Pt, Sb and Sn in combination with at least one redox partner from the group As, Ce, Fe, Mn, Sb, Sn, W, wherein Metallkolloidbildner and redox partner may not be identical.

Use of glass ceramics

Die vorliegende Erfindung betrifft neue Verwendungen von Glaskeramiken, wobei die Glas­keramiken insbesondere in der Form eines Glaskeramikrohres verwendet werden und 0 bis kleiner 4 Gew-% P205 und 0 bis kleiner 8 Gew-% CaO enthalten. Der Einsatz der Rohre kann in vielfältigen Anwendungsbereichen bzw. in vielfältigen Typen von Lampen erfolgen, beispielsweise im Bereich der allgemeinen Beleuchtung oder der Automobilbeleuchtung so­wie in Wärmestrahlern, wie Halogenlampen oder Glühlampen, bzw. in Hockdruck- oder Nie­derdruckentladungslampen. Insbesondere können die Glaskeramiken auch miniaturisiert zum so genannten ,,Backlighting' im Zusammenhang mit der Hintergrundbeleuchtung von Flachbildschirmen eingesetzt werden. Die Glaskeramiken weisen eine exzellente spektrale Transmission im sichtbaren Wellenlän­genbereich auf und sind dabei solarisationsstabil und absorbieren stark UV-Licht.

FRITTE GLASS CERAMIC AND PROCESS FOR PRODUCING THE SAME

On indique un procédé de production d'une céramique de verre avec les étapes suivantes: fonte d'un verre de départ qui, à part des impuretés fortuites, est exempt de métaux alcalins et contient au moins un générateur de grenat ainsi qu'au moins l'oxyde d'un lanthanide ; broyage du verre de départ pour la préparation d'une fritte de verre, moulage par pressage et frittage de la fritte de verre jusqu'à ce qu'il se forme au moins une phase de grenat qui contient des lanthanides. Une telle céramique de verre peut contenir environ 5 à 50 % en poids de SiO2, 5 à 50 % en poids d'Al2O3, 10 à 80 % en poids d'au moins un oxyde qui est choisi parmi le groupe qui est formé par Y2O3, Lu2O3, SC2O3, Gd2O3, Yb2O3, ainsi que 0,1 à 30 % en poids d'au moins un oxyde qui est choisi parmi le groupe qui est formé par les oxydes des lanthanides et B2O3. Une telle céramique de verre convient particulièrement à la conversion « down » de rayonnements excitateurs dans les plages spectrales bleue et UV. A method of producing a glass ceramic is indicated with the following steps: melting of a starting glass which, apart from incidental impurities, is free of alkali metals and contains at least one garnet generator as well as at least one the oxide of a lanthanide; grinding of the starting glass for the preparation of a glass frit, pressing molding and sintering of the glass frit until at least one garnet phase which contains lanthanides is formed. Such a glass ceramic may contain about 5 to 50% by weight of SiO 2, 5 to 50% by weight of Al 2 O 3, 10 to 80% by weight of at least one oxide which is selected from the group which is formed by Y 2 O 3 , Lu2O3, SC2O3, Gd2O3, Yb2O3, and 0.1 to 30% by weight of at least one oxide which is selected from the group consisting of lanthanide oxides and B2O3. Such a glass ceramic is particularly suitable for the "down" conversion of excitatory radiation in the blue and UV spectral ranges.

Use of a glass ceramic as armour material

Dünnglassubstrat, insbesondere borosilicatglas-dünnglassubstrat verfahren und vorrichtung zu dessen herstellung

conjunto de placas transparentes laminadas,processo para sua produÇço, curvamento e uso do mesmo

CONJUNTO DE PLACAS TRANSPARENTES LAMINADAS, PROCESSO PARA SUA PRODUÇçO E CURVAMENTO E USO DO MESMO. A invenção refere-se a conjunto de placas transparentes laminadas de materiais quebradiços, sendo que quanto aos materiais quebradiços se trata de diferentes vidros, vidros especiais, cerâmicas de vidro, cerâmicas transparentes e materiais cristalinos, a processo para produção e curvamento desses conjuntos de placas e a seu emprego como vidro à prova de golpes e de ruptura, balisticamente seguro.

Kristallisierbares glas und seine verwendung zur herstellung einer hochsteifen, bruchfesten glaskeramik mit gut polierbarer oberfl che

Es wird ein kristallisierbares Glas vom magnesiumhaltigen Alumosilikattyp beschrieben, das zur Herstellung einer hochsteifen, bruchfesten Glaskeramik mit gut polierbarer Oberfläche geeignet ist und das durch einen Gehalt an 5-33 Gew.- % SiO2 ; 25-40 Gew. - % Al2O3 ; 5-25 Gew.-% MgO ; 0-15 Gew. - % B2O3 ; 0,1-30 Gew. - % Y2O3, Ln2O3, As2O3 und/ oder Nb2O5 ; 0,1-10 ; Gew. -% P2O5 ; gekennzeichnet ist.

Verfahren zur Herstellung eines glaskeramischen Verbundformkörpers und ein Verbundformkörper

Die Erfindung betrifft ein Verfahren zur Herstellung eines glaskeramischen Verbundformkörpers aus mindestens zwei glasigen Kompartimenten, d. h. glasigen Formkörpern durch Fügen, insbesondere Bonden. Dazu werden die glasigen Kompartimente im Fügebereich einander überlappend unter Berührung ihrer miteinander zu fügenden Fügeflächen angeordnet und in einer Keimbildungsphase auf eine Temperatur T2 oberhalb der Glastransformationstemperatur Tg, bei welcher Kristallisationskeime ausgeschieden werden, aufgeheizt und anschließend unter Wärmebehandlung in einer Kristallisationsphase kristallisiert. die miteinander zu fügenden glasigen und optimal vorgekeimten Kompartimente werden dabei während des Zustandes des viskosen Fließens im Kristallisationsbereich im Bereich ihrer Fügeflächen miteinander stoffschlüssig unter Bildung eines Diffusionsverbundes verbunden.

Hochtransparentes wuchteinwirkungsfestes Scheibenlaminat umfassend wenigstens eine Scheibe einer Lithium-Alumino-Silicat-Glaskeramik und dessen Verwendung

Transparentes Scheibenlaminat, umfassend – wenigstens eine transparente Scheibe (a) aus einer Lithium-Alumino-Silicat-Glaskeramik, die in Gew.-% bezogen auf die Gesamtzusammensetzung als Bestandteile enthältLi2O 3,0–4,5 Al2O3 18,0–24,0 SiO2 55,0–70,0 TiO2 0,01–2,3 ZrO2 0,01–2,0 ΣTiO2 + ZrO2 0,5–4,3 SnO2 0–0,2 MgO 0–0,8 Fe2O3 40–200 ppm und As2O3 0,3–0,9 Gew.-% als chemisches Läutermittel – gegebenenfalls wenigstens eine Scheibe (b) ausgewählt aus der Gruppe bestehend aus Borosilikatglas, Kalk-Natron-Glas, Alumosilikatglas oder chemisch oder thermisch vorgespanntem Borosilikatglas, Alumosilikatglas oder Kalk-Natron-Glas – und wenigstens eine Scheibe (c) ausgewählt aus der Gruppe bestehend aus Scheiben aus Polycarbonat, Polyacryl, insbesondere Polymethylmethacrylat, Celluloseacetatbutyrat, Nylon, Polyolefin, Polyester, Polyurethan und Mischungen daraus.

Verfahren zur herstellung eines glaskeramischen verbundformkörpers und ein verbundformkörper

Die Erfindung betrifft ein Verfahren zur Herstellung eines glaskeramischen Verbundformkörpers aus mindestens zwei glasigen Kompartimenten, d.h. glasigen Formkörpern durch Fügen, insbesondere Bondert. Dazu werden die glasigen Kompartimente im Fügebereich einander überlappend unter Berührung ihrer miteinander zu fügenden Fügeflächen angeordnet und in einer Keimbildungsphase auf eine Temperatur T2 oberhalb der Glastransformationstemperatur Tg, bei welcher Kristallisationskeime ausgeschieden werden, aufgeheizt und anschließend unter Wärmebehandlung in einer Kristallisationsphase kristallisiert. Die miteinander zu fügenden glasigen und optimal vorgekeimten Kompartimente werden dabei während des Zustandes des viskosen Fließens im Kristallisationsbereich im Bereich ihrer Fügeflächen miteinander stoffschlüssig unter Bildung eines Diffusionsverbundes verbunden.

Material compuesto transparente de vidrio-polímero

Dispositivo transparente para proteger contra una acción de impactos, proyectiles, metrallas u ondas de presión, en el que el dispositivo está construido como un laminado (10) de al menos cuatro lunas transparentes de rotura frágil que están unidas una con otra por medio de capas intermedias transparentes de resina colada o películas de polímero, en el que el laminado presenta un espesor total de al menos 60 mm y en el que el laminado está rematado en el lado de protección (21) alejado del lado de acción (11) con una capa (20) de protección contra metrallas dotada de un espesor de 0,5 a 12 mm, que está configurada como capa de polímero transparente, caracterizado por que a una distancia de 6 mm a 20 mm de lado de acción (11) está dispuesta en el laminado (10) sobre la superficie vuelta hacia el lado de acción (11) una primera luna químicamente pretensada (14) de rotura frágil, por que en la superficie alejada del lado de acción (11) en la primera luna químicamente pretensada (14) de rotura frágil está dispuesta sobre una capa de poliuretano una capa de polímero (22) de un espesor comprendido entre 2 mm y 15 mm, y por que en la superficie de esta capa de poliuretano alejada del lado de la acción está conectada, a través de otra capa de poliuretano, una capa de material de rotura frágil.

ガーネット相を有するガラスセラミックの製造方法

【課題】ガラスセラミック、特に低周波数変換のための光変換材料に特に適したガラスセラミックの製造方法を目的とする。 【解決手段】酸化物を基準として、５重量％〜５０重量％のＳｉＯ ２ と、５重量％〜５０重量％のＡｌ ２ Ｏ ３ と、１０重量％〜８０重量％の、Ｙ ２ Ｏ ３ 、Ｌｕ ２ Ｏ ３ 、Ｓｃ ２ Ｏ ３ 、Ｇｄ ２ Ｏ ３ 、およびＹｂ ２ Ｏ ３ からなるグループから選択される少なくとも１種の酸化物と、同様に０．１重量％〜３０重量％の、ランタノイドの酸化物およびＢ ２ Ｏ ３ からなるグループから選択される少なくとも１種の酸化物とからなる出発ガラスを製造する。その後、上記材料を、少なくとも１００Ｋ／分の加熱速度で、好ましくは赤外線加熱を用いて、１０００℃〜１４００℃の範囲の温度に、ガーネット相を含む微結晶が形成されるまで、セラミック化のために加熱する。その後、室温まで冷却する。 【選択図】図３

Verbundglas, insbesondere für ein Fahrzeug

Die Erfindung betrifft allgemein ein Verbundglas, insbesondere für ein Fahrzeug. Im Speziellen betrifft die Erfindung ein Verbundglas, beispielsweise für ein Fahrzeug, welches beispielsweise für den Einsatz als Windschutzscheibe geeignet ist und eine besonders gute Festigkeit sowie eine sehr gute Bedienersicherheit aufweist.

Kristallisierbares Glas und seine Verwendung zur Herstellung einer hochsteifen, bruchfesten Glaskeramik mit gut polierbarer Oberfläche

Es wird ein kristallisierbares Glas vom magnesiumhaltigen Alumosilikattyp beschrieben, das zur Herstellung einer hochsteifen, bruchfesten Glaskeramik mit gut polierbarer Oberfläche geeignet ist und das durch einen Gehalt an DOLLAR A 5-33 Gew.-% SiO¶2¶ DOLLAR A 25-40 Gew.-% Al¶2¶O¶3¶ DOLLAR A 5-25 Gew.-% MgO DOLLAR A 0-15 Gew.-% B¶2¶O¶3¶ DOLLAR A 0,1-30 Gew.-% Y¶2¶O¶3¶, Ln¶2¶O¶3¶, As¶2¶O¶3¶ und/oder Nb¶2¶O¶5¶ DOLLAR A 0,1-10 Gew.-% P¶2¶O¶5¶ DOLLAR A gekennzeichnet ist.

Luminous device comprising a glass-metal duct, and glass-metal duct