Abstract: A pore-free ceramic is provided that has a high modulus of elasticity and a low coefficient of thermal expansion. A process for producing a corresponding ceramic is also provided. The pore free ceramic is a dimensionally stable substrate material in applications subjected to temperature gradients including semiconductor manufacture.

Abstract: In a fabricating method for a quartz vial having a body part for containing a substance, a bottom part closing a lower end of the body part, a cylindrical neck part disposed at an upper end of the body part, a cylindrical mouth part disposed above the neck part and having an outer diameter larger than that of the neck part, and a tapered portion connecting the mouth part and the neck part to each other, outer peripheral surfaces of the tapered portion and the neck part are formed by shaving, and the body part that is separately fabricated is welded to the neck part. Thus, quartz vials having a predetermined shape can be mass-fabricated.

Abstract: Disclosed is a sealing glass composition substantially not containing B2O3 or Al2O3, which is a high-strength, high-expansive crystallizing glass composition that can be used at high temperatures of not less than 950° C. The composition substantially not containing boron oxide, alkali metal oxides or aluminum oxide, but containing, in mol %, SiO2: 40-55, BaO: 18-35, TiO2+ZrO2: 0.1-10, ZnO: 0-15, CaO: 0-20, MgO: 0-9, SrO: 0-5, and La2O3: 0-2, wherein the total content of RO (R: Mg, Ca, Sr, Ba and Zn) is at least 44 mol %, and wherein the glass composition, when fired in the form of glass powder at a temperature of 850-1050° C, turns into a crystallized glass that exhibits a thermal expansion coefficient of 90-150×10?7/° C. in the range of 50-850° C.

Abstract: Exemplary embodiments of the present disclosure provide a lithium silicate crystalline or amorphous glass overlaying the top surfaces of zirconia and the manufacturing process thereof. More specifically, exemplary embodiments of the present disclosure provide a lithium silicate glass or lithium silicate crystalline glass with high light transmittance and good coloring characteristics and the manufacturing process thereof, which overlays the top surface of zirconia with high mechanical strength, frameworks, or copings. The lithium silicate crystalline or amorphous glass may include 10-15 wt % Li2O, 71.1-85.0 wt % SiO2, 2-5 wt % P2O5 working as nuclear formation agent, 1-5 wt % Al2O3 to increase glass transition temperature and softening temperature, as well as chemical durability of the glass, and 0.01-1.0 wt % ZrO2 which increases the binding strength of the zirconia substructure.

Abstract: A process for reinforcing a glass-ceramic article, into which a maximum tension is introduced beneath the surface of the glass-ceramic, advantageously in proximity to said surface. The invention also relates to an enamel that can be used for this reinforcement, this enamel being formed from a glass frit having the following composition, the proportions being expressed as weight percentages: SiO2 50-66% MgO 3-8% Na2O ?7-15% K2O 0-3% Li2O ?0-12% CaO ?0-10% BaO ?0-15% Al2O3 0-3% ZrO2 0-3% ZnO 0-5% B2O3 0-8% the sum of the alkaline-earth metal oxides CaO+BaO moreover being between 8 and 15%, and the sum of the alkali metal oxides Na2O+K2O+Li2O moreover being between 7 and 20%. The reinforced glass-ceramics obtained by the process.

Abstract: On the basis of a known method for producing a blank of titanium-doped glass with a high silica content (glass) for a mirror substrate for use in EUV lithography which has a surface region that has an outer contour, is intended to be provided with a reflective coating and is specified as a highly loaded zone when the mirror substrate is used as intended, in order to provide a blank which can be produced at low cost and nevertheless meets high requirements with respect to homogeneity and freedom from blisters and striae, a procedure which comprises the following method steps is proposed: (a) producing a front body of titanium-doped high-quality glass with dimensions more than large enough to enclose the outer contour, (b) producing a cylindrical supporting body from titanium-doped glass, (c) bonding the front body and the supporting body to form a composite body, and (d) working the composite body to form the mirror substrate blank, wherein the step of producing the front body comprises a homogenizing process

Abstract: A method of bonding a first substrate to a second substrate includes providing a glass, applying the glass in a layer between the first and second substrates to form an assembly, and heating the assembly to a bonding temperature above a glass transition temperature of the devitrifying glass, selected to cause the glass to bond the first substrate to the second substrate. The devitrifying glass has constituents that include various amounts of group A in a molar concentration of 70-95%, group B in a molar concentration of 5-20%, group C in a molar concentration of 1-20%, group D in a molar concentration of 0-6%; and group E in a molar concentration of 0-10%. The group A, B, C, D and E groups are disclosed herein.

Abstract: A method to form quartz glass ingots of ultra low contamination and defect levels by firing a high-purity quartz form as the feedstock, wherein the quartz glass ingot is free-formed on a platen rotating concentrically with the feedstock quartz article.

Abstract: The invention relates to a method and to a device for force-fit connecting glass-like components to metals, particularly for connecting a glass plate (2) to a large-scale mounting element (19) as a central connecting element, particularly made of metal, having the following characteristics: a) an input and control device (6) for inputting process data, b) a storage and positioning device (15) for supplying individual fastener elements (1) as support elements of a central connection element (20), c) having mounting and fixing means (3) for fixing a glass plate (2), d) a thickness measuring device (7) for measuring the thickness of each of the components to be connected and layers of the same, e) a measuring machine (8) for measuring the resonant frequency of the glass plate (2) and a surface sensor (10) for determining the roughness of the glass plate (2), f) a sliding device (11) for pressing together the components to be connected by means of an ultrasonic horn (4), g) a device for generating ultrasonics by

Abstract: The invention provides a manufacturing method of a glass-sealed package, and a glass substrate used for the glass-sealed package, whereby an amount of warp in a glass substrate is reduced to improve processing accuracy in a subsequent step in which the glass substrate is combined (such as by anodic bonding) with another glass substrate provided with a thin film. The front side of the glass substrate includes a region where the cavities used to house electronic devices such as semiconductor IC chips and crystal blanks are not formed. The region devoid of the cavities is provided in the formed of a frame to reduce an amount of warp in the glass substrate.

Abstract: In manufacturing method for a thermal head, concave portions, including a reference concave portion, are formed on a surface of a substrate so that a length of each of the concave portions other than the reference concave portion increases as a distance from the reference concave portion in a length direction increases and so that a width of each of the concave portions other than the reference concave portion increases as a distance from the reference concave portion in a width direction increases. A mark identifying the reference concave portion is formed on the surface of the substrate. An insulating film is thermally fusion bonded to the surface of the substrate including the concave portions formed thereon. Heating resistors are formed on the insulating film using a photo mask by aligning the photo mask with the substrate in accordance with the reference concave portion to form the heating resistors so as to be opposed to the plurality of concave portions.

Abstract: A laminate type ceramic electronic component includes a thick film resistor and an overcoat layer so as to prevent defects such as delamination from being caused and to prevent the thick film resistor from being cracked after laser trimming, even when a method is adopted in which an unfired composite laminate is subjected to firing in such a way that an unfired ceramic laminate, an unfired thick film resistor, and an unfired overcoat layer are each integrally sintered. The unfired overcoat layer includes a glass ceramic material containing a ceramic and glass having substantially the same constituents and compositional ratio as those of the glass contained in the unfired ceramic layer.

Abstract: When fusing glass members 104, 105 together by irradiating a glass layer 203 with a laser beam L2 along a region R to be fused, a crystallized area 108 formed in the glass layer 203 is taken as an irradiation-initiating point and an irradiation-ending point. Since the crystallized area 108 exhibits a laser absorptance lower than that of the glass layer 203 here, the glass layer 203 is gradually heated when the laser beam L2 is moved along the region R to be fused from the irradiation-initiating point, while the glass layer 203 is gradually cooled when the laser beam L2 is moved along the region R to be fused to the irradiation-ending point. This can prevent residual stresses from occurring in a part including the irradiation-initiating point and irradiation-ending point of the laser beam L2.

Abstract: Provided are a method for manufacturing a liquid crystal lens which, even with the use of a thin sheet glass as a glass sheet for dividing a liquid crystal layer, can reduce the likelihood of breakage of the thin sheet glass in the production process and the liquid crystal lens. A mother liquid crystal lens having a plurality of liquid crystal lens units arrayed in a longitudinal direction thereof is cut for each of the liquid crystal lens units to separate out the liquid crystal lens units and thus manufacture respective liquid crystal lenses 10. Longitudinally extending side surfaces 13c, 13d, 14c, and 14d of glass ribbons which provide thin sheet glasses 13 and 14 have an outwardly bulging curved shape in a cross section perpendicular to the longitudinal direction.

Abstract: A glass lampshade comprising a fusion body of crystal grain glass, an upper crystal glass plate, a lower crystal glass plate, and a curing gel layer. The upper crystal glass plate is attached to the lower crystal plate via the curing gel layer. The fusion body of crystal grain glass is attached to the upper crystal glass plate. A method of producing the glass lampshade.

Abstract: Disclosed is a method for fabricating glass bump standoff structures of precise height, the method comprising providing oversized glass bumps on a glass substrate, providing a heat source to heat the bumps, positioning a substrate to be aligned on the oversized bumps, and reducing the height of the oversized bumps by a combination of manipulations comprising (1) softening the bumps by heating the bumps and (2) applying pressure to the substrate to be aligned.

Abstract: On the basis of a known method for producing a blank of titanium-doped glass with a high silica content (glass) for a mirror substrate for use in EUV lithography which has a surface region that has an outer contour, is intended to be provided with a reflective coating and is specified as a highly loaded zone when the mirror substrate is used as intended, in order to provide a blank which can be produced at low cost and nevertheless meets high requirements with respect to homogeneity and freedom from blisters and striae, a procedure which comprises the following method steps is proposed: (a) producing a front body of titanium-doped high-quality glass with dimensions more than large enough to enclose the outer contour, (b) producing a cylindrical supporting body from titanium-doped glass, (c) bonding the front body and the supporting body to form a composite body, and (d) working the composite body to form the mirror substrate blank, wherein the step of producing the front body comprises a homogenizing process

Abstract: A method for producing an airtight container includes preparing an assembly having a first substrate and a frame member, the first substrate having an electron-emitting element formed on a first surface thereof, the frame member mounted on the first surface outside an area where the electron-emitting element is formed; forming a temporary assembly having the assembly and a second substrate by bringing the second substrate into contact with the frame member via a joining member such that an inner space is formed; melting the joining member by irradiating the joining member with a laser beam transmitted through the second substrate; and solidifying the melted joining member. The laser beam is applied such that an incident direction at an irradiation position on the joining member does not include components toward the interior of the frame member while the laser beam moves relative to the temporary assembly.

Abstract: A crystalline glass with a characteristic of precipitating crystals from the surface of the crystalline glass to the interior thereof when it is being heated at a temperature higher than the softening point is used in the invention. A plurality of small crystalline glass masses 12 are accumulated and leveled in a fireproof mold coated with a mold release agent, and two crystalline glass plates 14A and 14B cut in an S shape are placed on the accumulated surface of the small crystalline glass masses 12 with the cut faces tightly bonded. A heat treatment is then performed to obtain a crystallized glass article having patterns. The crystalline glass plate can be cut into any shape to tightly bond the cut faces, and therefore the obtained crystallized glass articles have different patterns like natural-marble-like patterns, human figure patterns, animal patterns, etc. The invention also discloses a method of producing crystallized articles having patterns.

Abstract: Three bonding materials are provided on a first plate. The first bonding material is located between the second and third bonding materials. The first bonding material is thicker than the other bonding materials. A second plate is provided on the first bonding material. All of the plates and the bonding materials are heated to the softening point of the first bonding material. A load is exerted on the first bonding material to reduce the thickness of the first bonding material to that of the second and third bonding materials and transfer the load to the second and third bonding materials from the first bonding material. The temperature is raised to and kept at the crystallization point of the first bonding material. The temperature is raised to the wetting point of the second and third bonding materials.

Abstract: Disclosed are mono- or multi-component glass-ceramic articles (10; 20; 30; 40; 50; 60; 70; 80; 90) having at least one weld joint (100), as well as a method of manufacturing such articles (10; 20; 30; 40; 50; 60; 70; 80; 90), which includes the implementation of at least one welding. The present invention is based upon mastery of the welding of glass-ceramic precursor glasses.

Abstract: Three bonding materials are provided on a first plate. The first bonding material is located between the second and third bonding materials. The first bonding material is thicker than the other bonding materials. A second plate is provided on the first bonding material. All of the plates and the bonding materials are heated to the softening point of the first bonding material. A load is exerted on the first bonding material to reduce the thickness of the first bonding material to that of the second and third bonding materials and transfer the load to the second and third bonding materials from the first bonding material. The temperature is raised to and kept at the crystallization point of the first bonding material. The temperature is raised to the wetting point of the second and third bonding materials.

Abstract: A crystalline glass with a characteristic of precipitating crystals from the surface of the crystalline glass to the interior thereof when it is being heated at a temperature higher than the softening point is used in the invention. A plurality of small crystalline glass masses 12 are accumulated and leveled in a fireproof mold coated with a mold release agent, and two crystalline glass plates 14A and 14B cut in an S shape are placed on the accumulated surface of the small crystalline glass masses 12 with the cut faces tightly bonded. A heat treatment is then performed to obtain a crystallized glass article having patterns. The crystalline glass plate can be cut into any shape to tightly bond the cut faces, and therefore the obtained crystallized glass articles have different patterns like natural-marble-like patterns, human figure patterns, animal patterns, etc. The invention also discloses a method of producing crystallized articles having patterns.

Abstract: Method of making an article, the method comprising coalescing a plurality of the glass particles. Examples of articles include kitchenware (e.g., plates), dental brackets, and reinforcing fibers, cutting tool inserts, abrasives, and structural components of gas engines, (e.g., valves and bearings).

Abstract: Method of making an article, the method comprising coalescing a plurality of the glass particles. The article may comprise glass, glass-ceramic, and/or crystalline ceramic. Examples of articles include kitchenware (e.g., plates), dental brackets, and reinforcing fibers, cutting tool inserts, abrasives, and structural components of gas engines, (e.g., valves and bearings).

Abstract: A hermetically sealed glass package and method for manufacturing the hermetically sealed glass package are described herein. In one embodiment, the hermetically sealed glass package is suitable to protect thin film devices which are sensitive to the ambient environment. Some examples of such glass packages are organic emitting light diode (OLED) displays, sensors, and other optical devices. The present invention is demonstrated using an OLED display as an example.

Abstract: The present invention relates to a novel glass ceramic having a low or small average thermal expansion together with good polishability and processability, to the use of the glass ceramic according to the invention, and to optical components made of the glass ceramic. In particular, a glass ceramic is provided which comprises the following composition (in % by weight based on oxide): SiO2 50–70 Al2O3 17–32 P2O5 ?3–12 Li2O 2.5–5?? Na2O 0–2 K2O 0–2 MgO 0–2 CaO 0.1–4?? BaO ??0–<1 SrO 0–2 ZnO 0–4 TiO2 1.5–5?? ZrO2 ?0–2.5.

Abstract: Tubulation tubing of a display panel includes a flange at one end and a ring-shape adhesive member placed on a display panel to align a vent hole of the display with an opening of the tubulation tubing and the flange of the tubulation tubing is bonded to the display panel via the adhesive member.

Abstract: This invention relates to glass-ceramic materials in the BaO—La2O3—SiO2 system, which are suitable for processing via a powder route, and which, after heat-treatment have a combination of high thermal expansion and excellent refractoriness. The precursor glass powders of the present invention have compositions on a weight percent basis of 10–55% BaO, 3–50% La2O3, 25–48% SiO2 and optionally up to 30% in total of other compatible metal oxides. The powders are substantially free from alkali metal oxides and from boron oxide such that the refractoriness of the glass-ceramic materials is not compromised. The materials may be advantageously employed at high temperatures in direct combination with other materials of high expansion or may be used to join or hermetically seal components made of other materials having similarly high expansion.

Abstract: A method of constructing a glass panel which comprises two confronting edge sealed glass sheets, the method comprises the steps of providing a solder glass band around the margin of one surface of each glass sheet, forming, at a first temperature, an hermetic bond between the solder glass band and the associated surface of each glass sheet, positioning the glass sheets in spaced-apart confronting relationship, forming, at a second temperature which is lower than the first temperature, an hermetic seal between the two solder glass bands whilst maintaining the spaced apart relationship between the glass sheets.

Abstract: An apparatus (10) includes a digital micromirror device (16) disposed within a housing (11) that has an opening (13) hermetically sealed by a lid (17). The lid includes a radiation transmissive window (22) with peripheral edges fixedly coupled by an annular sealing section (23) to a metal frame (21). The sealing section engages a frame surface oxidized in a wet nitrogen furnace. The sealing section melts at a temperature lower than the window or frame. The sealing section includes two center rings (151, 152) made of sealing glass that are respectively bonded to the window and frame and to each other. The sealing section also includes inner and outer rings (152, 157, 158) made of sealing glass and disposed on opposite sides of the center rings to protect the center rings from environmental factors.

Abstract: A display panel is provided that has a multilayer structure made of a colored glass layer having a desired shape and optical characteristics and a non-colored glass layer having high transparency, as well as high productivity. The display panel has a non-colored glass layer and a colored glass layer contacting the non-colored glass layer. A multilayer structure is formed that includes a colored paste layer and a non-colored paste layer. In the colored paste layer, crystallization glass powder that is crystallized at the temperature TA and coloring agent are diffused. In the non-colored paste layer, glass powder whose softening point is the temperature TB that is higher than the temperature TA. The multilayer structure is heated to the temperature TC that is higher than the temperature TB and is lower than the softening point of the crystallization glass powder after the crystallization to be burned, so that the non-colored glass layer and the colored glass layer are formed simultaneously.

Abstract: A high concentration central receiver system and method provides improved reflectors and a unique heat removal system. The central receiver has a plurality of interconnected reflectors coupled to a tower structure at a predetermined height above ground for reflecting solar radiation. A plurality of concentrators are disposed between the reflectors and the ground such that the concentrators receive reflective solar radiation from the reflectors. The central receiver system further includes a heat removal system for removing heat from the reflectors and an area immediately adjacent the concentrators. Each reflector includes a mirror, a facet, and an adhesive compound. The adhesive compound is disposed between the mirror and the facet such that the mirror is fixed to the facet under a compressive stress.

Abstract: The present invention provides a ceramic color composition which comprises, as a solid powder, 50 to 90 wt. % of a mixture containing 5 to 95 parts by weight of a first lead-free glass powder comprising at least SiO2, ZnO, and B2O3 as glass components, and 5 to 95 parts by weight of a second lead-free glass powder comprising at least SiO2, Bi2O3, and B2O3 as glass components, 10 to 40 wt. % of an inorganic pigment, and 0 to 10 wt. % of an inorganic filler. The composition is free of lead and exhibits an excellent mold release property during the heat-molding process of a glass plate having the composition printed thereon. After firing, the composition is excellent in acid resistance, coloration in the bus bar portion, and plating resistance.

Abstract: A method for joining glass ceramic surfaces to each other and/or other types of surfaces using a silicate liquid is disclosed. The products are suitable for use as, e.g. mirror blanks or microlithography stages, at low temperatures. Component pieces are polished then joined at low temperature using a silicate-containing joining liquid. Assembly is then performed in such a way that the joining liquid forms an interface between each component. After a period of low or slightly elevated temperature curing, rigid joints are formed throughout and the composite is dimensionally, vibrationally, and temperature stable and can withstand tensile stresses >4000 psi. The room-temperature cured composite can be heat treated using a slow, systematic temperature increase to dehydrate the joints. A sealing coating may optionally be provided to prevent excess dried joining liquid from flaking off the formed joint.

Abstract: A glass ceramic, for use as a resistor or a gas-tight glass ceramic solder for use in a spark plug, includes a fused seal of a starting glass fused from a starting mixture containing SiO2, Al2O3, TiO2 and CaO, the fused seal including crystalline phases in at least some areas. A method for producing such a glass ceramic provides for the starting glass to be processed in a first method step to form a starting material, which is heated for a first period of time in a second method step from a starting temperature, which is below the softening temperature of the starting glass, to a fusion temperature, which is above the softening temperature of the starting glass, and is kept at that temperature for a second period of time and finally is cooled again. A spark plug may include a terminal stud and a center electrode, which are electrically connected across a resistor that is formed in at least some areas by the glass ceramic.

Abstract: A method for producing a crystallized glass member, the method includes: precisely polishing each surface of two or more crystallizable original glass components having an identical composition so that the polished surfaces to be brought into contact with each other have a flatness of &lgr; (633 nm) or less; heating the glass components to a first temperature in a glass transition region while the surfaces are brought into contact with each other so as to fuse the glass components; and heating an original glass member prepared by fusing the glass components at a second temperature which is higher than the first temperature in the glass transition region, so as to crystallize and bond the original glass member.

Abstract: Methods of forming glass articles sensitive to aggressive heat treatment are disclosed. Glass preforms have sections of glass fusion bonded to the preforms, and the preforms are subsequently drawn into glass articles.

Abstract: To provide effective seals between the separator plates of fuel cells, particularly planar solid oxide fuel cells (SOFC's), a method of applying a glass-ceramic coating to such a separator plate comprises providing a laminar body incorporating a glass powder, e.g., a tape-cast sheet, forming a bond between the laminar body and the separator plate to form. an assembly comprising the separator plate and the laminar body, and heat-treating the assembly to convert the glass powder to a glass-ceramic.

Abstract: Glass-ceramics and methods of making the same. Embodiments of the invention include abrasive particles. The abrasive particles can be incorporated into a variety of abrasive articles, including bonded abrasives, coated abrasives, nonwoven abrasives, and abrasive brushes.

Abstract: Alumina-zirconia materials and methods of making the same. Embodiments of the invention include abrasive particles. The abrasive particles can be incorporated into a variety of abrasive articles, including bonded abrasives, coated abrasives, nonwoven abrasives, and abrasive brushes.

Abstract: Al2O3-rare earth oxide-ZrO2/HfO2 ceramics (including glasses, crystalline ceramics, and glass-ceramics) and methods of making the same. Ceramics according to the present invention can be made, formed as, or converted into glass beads, articles (e.g., plates), fibers, particles, and thin coatings. The particles and fibers are useful, for example, as thermal insulation, filler, or reinforcing material in composites (e.g., ceramic, metal, or polymeric matrix composites). The thin coatings can be useful, for example, as protective coatings in applications involving wear, as well as for thermal management. Certain ceramic particles according to the present invention can be are particularly useful as abrasive particles.

Abstract: Amorphous materials, glass-ceramics and methods of making the same. Embodiments of the invention include abrasive particles. The abrasive particles can be incorporated into a variety of abrasive articles, including bonded abrasives, coated abrasives, nonwoven abrasives, and abrasive brushes.

Abstract: Methods of making amorphous material and ceramic materials. Embodiments of the invention can be used to make abrasive particles. The abrasive particles can be incorporated into a variety of abrasive articles, including bonded abrasives, coated abrasives, nonwoven abrasives, and abrasive brushes.

Abstract: Al2O3—Y2O3—ZrO2/HfO2 ceramics (including glasses, crystalline ceramics, and glass-ceramics) and methods of making the same. Ceramics according to the present invention can be made, formed as, or converted into glass beads, articles (e.g., plates), fibers, particles, and thin coatings. The particles and fibers are useful, for example, as thermal insulation, filler, or reinforcing material in composites (e.g., ceramic, metal, or polymeric matrix composites). The thin coatings can be useful, for example, as protective coatings in applications involving wear, as well as for thermal management. Certain ceramic particles according to the present invention can be are particularly useful as abrasive particles.

Abstract: The present invention is a glass-ceramic material and method of making useful for joining a solid ceramic component and at least one other solid component. The material is a blend of M1-M2-M3, wherein M1 is BaO, SrO, CaO, MgO, or combinations thereof, M2 is Al2O3, present in the blend in an amount from 2 to 15 mol %, M3 is SiO2 with up to 50 mol % B2O3 that substantially matches a coefficient of thermal expansion of the solid electrolyte. According to the present invention, a series of glass ceramics in the M1-Al2O3-M3 system can be used to join or seal both tubular and planar solid oxide fuel cells, oxygen electrolyzers, and membrane reactors for the production of syngas, commodity chemicals and other products.

Abstract: The present invention relates generally to UV (ultraviolet) photosensitive bulk glass, and particularly to batch meltable alkali boro-alumino-silicate and germanosilicate glasses. The photosensitive bulk glass of the invention exhibits photosensitivity to UV wavelengths below 300 nm.

Abstract: The present invention relates generally to UV (ultraviolet) photosensitive bulk glass, and particularly to batch meltable alkali boro-alumino-silicate glasses. The photosensitive bulk glass of the invention exhibits photosensitivity to UV wavelengths below 250 nm.