Abstract: The invention relates to a method for the production of a blank of a ceramic material, wherein a first ceramic material and then a second ceramic material of different compositions are filled into a mold and wherein the materials are pressed and after pressing are sintered. Thereby, a layer of the first ceramic material is filled into the mold, a first open cavity is formed in the layer, the second ceramic material is filled into the first open cavity and the materials are pressed together and are then heat-treated. Both the first ceramic material and the second ceramic material contain, or consists of, lithium silicate glass ceramic.

Abstract: The invention relates to a process for the preparation of a glass-ceramic blank for dental purposes with lithium silicate as crystal phase, in which lithium silicate blanks that are no longer required and in particular residues thereof are used as starting material and which allows the production of a homogeneous starting glass within a short time.

Abstract: The invention relates to glass ceramics and glasses with a europium content, containing the following components: Component wt.-% SiO2 30.0 to 75.0 Al2O3 10.0 to 45.0 Europium, calculated as Eu2O3 0.05 to 5.0? and which are suitable in particular for the production of restorations, the fluorescence properties of which largely correspond to those of natural teeth.

Abstract: A process for producing a glazed ceramic body, in which a glazing material is applied to a non-densely sintered substrate material and the substrate material and the glazing material are subjected to a heat treatment in order to obtain the glazed body.

Abstract: Provided is a block body that makes it possible to quickly produce a dental prosthesis with a good accuracy. A material of the block body including SiO2 in an amount of 60.0 mass % to 80.0 mass %, Li2O in an amount of 10.0 mass % to 20.0 mass %, Al2O3 in an amount of 5.1 mass % to 10.0 mass %, wherein the block body is formed in a column, and a main crystalline phase of the block body is lithium disilicate.

Abstract: An ignition plug comprising: an insulator having a through hole extending from a rear-end side toward a forward-end side; a center electrode inserted at least partially into a portion of the through hole on the forward-end side; a metal terminal member inserted at least partially into a portion of the through hole on the rear-end side; and a seal disposed within the through hole and in contact with the center electrode and an inner circumferential surface of the insulator. The seal contains a glass and an electrically conductive substance, and the glass contained in the seal contains Si in an amount of 50 mass % or more as reduced to SiO2 and Na in an amount of 0.1 mass % or more and less than 1 mass % as reduced to Na2O.

Abstract: The invention relates to glass-ceramics based on the lithium silicate system which can be mechanically machined easily in an intermediate step of crystallisation and, after complete crystallisation, represent a very strong, highly-translucent and chemically-stable glass-ceramic. Likewise, the invention relates to a method for the production of these glass-ceramics. The glass-ceramics according to the invention are used as dental material.

Abstract: A method provides for producing modifications in or on a transparent workpiece using a laser processing device. The laser processing device has a short pulse or ultrashort pulse laser that emits laser radiation having a wavelength in the transparency range of the workpiece and which has a beam-shaping optical unit for beam shaping for focusing the laser radiation. The transparent workpiece is composed of a material that has a plurality of phases, of which at least two phases have different dielectric constants, of which in turn the one phase is a phase embedded in the form of particles, which phase is substantially surrounded by the other phase, and wherein the product of the volume of the particles specified in cubic nanometers and the ratio of the absolute value of the difference of the two different dielectric constants to the dielectric constant of the surrounding phase is greater than 500.

Abstract: The disclosed concept relates to electrical isolation between power electronic and cooling and/or mounting components and, in particular, a ceramic layer positioned at the interface of the power electronic and cooling and/or mounting components to provide electrical isolation, as well as, a thermally conductive path to remove heat produced by the power electronic component.

Abstract: Lithium silicate-wollastonite glass ceramics are described which are characterized by a controllable translucence and can be easily machined and therefore can be used in particular as restoration material in dentistry.

Abstract: The present invention relates to structure including an interfacial seal between a glass-ceramic component and a metal component, as well as methods for forming such structures. In particular embodiments, the interfacial seal includes a metal oxide. Such interfacial seals can be beneficial for, e.g., hermetic seals between a glass-ceramic component and a metal component.

Abstract: Example methods of manufacturing a glass mirror apparatus includes the step of providing a chemically strengthened glass sheet with a thickness of less than or equal to about 2 mm. The method further includes the step of applying a reflective layer to the second major surface of the glass sheet to provide a first glass mirror. In further examples, a glass mirror apparatus comprises a chemically strengthened glass sheet with a thickness of less than or equal to about 2 mm. A reflective layer applied to the second major surface of the glass sheet to provide a first glass mirror.

Abstract: Ceramics and glass-ceramics have low and/or negative coefficients of thermal expansion. Crystalline phases of the formula AM2Si2-yGeyO7 (A=Sr and Ba and M=Zn, Mg, Ni, Co, Fe, Cu, Mn, with Sr, Ba and Zn necessarily having to be present) can be produced by conventional ceramic processes or by crystallization from glasses. The compositions form solid solutions, where the elements indicated as component M can be replaced by one another in virtually any concentration but the concentration of Zn must always be at least 50% of the sum of all components indicated under M. The stoichiometry of these silicates and also their structure can differ to a greater or lesser extent.

Abstract: The present invention relates to a process for the manufacture of a glass container that comprises the steps of: a) providing a first glass element; b) providing a second element made of a material selected from: glass, ceramic, metal and metallic alloy; said first element and said second element, joined together, defining a containment cavity of said glass container; c) depositing a sealing composition comprising at least one glass frit dispersed in at least one dispersing liquid on at least one surface of at least one of said first element and said second element; d) positioning said first element and said second element in contact with each other so that said sealing composition is arranged between said first element and said second element; e) heating said sealing composition so as to melt said glass frit and form a sealing layer between said first element and said second element. The present invention further relates to a glass container, such as, for example, a bottle, a cup or a jar, and related uses.

Abstract: Pre-sintered blanks based on lithium metasilicate glass ceramic are described which are suitable in particular for the preparation of dental restorations.

Abstract: A method of bonding a high-strength zirconia post serving as a core in a glass-ceramic block, a method of bonding a metal link fastened with an implant fixture to the zirconia post, and glass-ceramic bondable to the zirconia post and a preparation method thereof, when preparing artificial teeth through a CAD/CAM processing method by using the glass-ceramic block as an artificial-teeth material. The lithium disilicate glass-ceramics containing cristobalite crystalline includes glass-ceramics composition including 10 to 15 wt % Li2O, 68 to 76 wt % SiO2, 2 to 5 wt % P2O5 working as a nuclei formation agent, 0 to 5 wt % Al2O3 to increase glass transition temperature and softening temperature and increase chemical durability of the glass, 2 to 3 wt % ZrO2, 0.5 to 3 wt % CaO for enhancing a thermal expansion coefficient of the glass, 0.5 to 5 wt % Na2O, 0.5 to 5 wt % K2O, and 1 to 2 wt % colorants, and 0 to 2.0 wt % mixture of MgO, ZnO, F, and La2O3.

Abstract: Disclosed herein is a silicon-based anode active material, comprising a silicon phase, a SiOx (0<x<2) phase and a carbon dioxide phase. Also disclosed is a secondary battery, which comprises a cathode comprising a cathode active material, an anode active material comprising an anode active material, and a separator, wherein the anode active material comprises a silicon phase, an SiOx (0<x<2) phase and a silicon dioxide phase.

Abstract: Pre-sintered blanks based on lithium metasilicate glass ceramic are described which are suitable in particular for the preparation of dental restorations.

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: The present invention relates to a glass ceramic powder comprising i) a glass material formed from a glass mixture containing a lithium and oxygen containing compound selected from Li2O and/or Li2CO3, SiO2, K2O, La2O3, and ii) seed particles comprising Li2SiO3 crystals and/or Li2Si2O5 crystals. The present invention also relates to a method of manufacturing of said glass ceramic powder, a method for preparing compacted and sintered bodies from the glass ceramic powder and bodies obtainable by said method.

Abstract: The present disclosure relates to fusion formable highly crystalline glass-ceramic articles whose composition lies within the SiO2—R2O3—Li2O/Na2O—TiO2 system and which contain a silicate crystalline phase comprised of lithium aluminosilicate (?-spodumene and/or ?-quartz solid solution) lithium metasilicate and/or lithium disilicate. Additionally, these silicate-crystal containing glass-ceramics can exhibit varying Na2O to Li2O molar ratio extending from the surface to the bulk of the glass article, particularly a decreasing Li2O concentration and an increasing Na2O concentration from surface to bulk. According to a second embodiment, disclosed herein is a method for forming a silicate crystalline phase-containing glass ceramic.

Abstract: Lithium silicate materials are described which can be easily processed by machining to dental products without undue wear of the tools.

Abstract: The present invention provides a highly-sintered fluorapatite glass-ceramic comprising a high Ca/Al or Sr/Al mole-ratio, that possesses a microstructure that induces apatite/bone deposition.

Abstract: Lithium silicate glass ceramics and glasses comprising specific oxides of monovalent elements are described which crystallize at low temperatures and are suitable in particular as dental materials.

Abstract: The invention is directed to veneer ceramics for dental restorations of framework ceramics comprising yttrium-stabilized zirconium dioxide. It is the object of the invention to make possible a translucent veneer ceramic which has high flexural strength as well as excellent adhesion to the framework ceramic of yttrium-stabilized zirconium dioxide. According to the invention, this object is met in a veneer ceramic for dental restorations made of yttrium-stabilized zirconium dioxide which is produced from the following components: a) SiO2 58.0-74.0 percent by weight b) Al2O3 4.0-19.0 percent by weight c) Li2O 5.0-17.0 percent by weight d) Na2O 4.0-12.0 percent by weight e) ZrO2 0.5-6.0 percent by weight.

Abstract: The invention relates to glass-ceramics based on the lithium disilicate system which can be mechanically machined easily in an intermediate step of crystallization and, after complete crystallization, represent a very strong, highly-translucent and chemically-stable glass-ceramic. Likewise, the invention relates to a method for the production of these glass-ceramics. The glass-ceramics according to the invention are used as dental material.

Abstract: Lithium silicate materials are described which can be easily processed by machining to dental products without undue wear of the tools and which subsequently can be converted into lithium silicate products showing high strength.

Abstract: A white light emitting glass-ceramic. The chemical formula of the glass-ceramic is aSiO2.bAl2O3.cNaF.dCeF3.nDyF3.mAg, wherein a, b, c, d, n and m are, by mol part, 25-50, 15-30, 10-30, 10-25, 0.01-1 and 0.01-1, respectively, and a+b+c+d-100. A method for producing said glass-ceramic is also provided. Silver ion is doped in the glass-ceramic in the form of silver particles by means of sintering and reduction annealing treatment, and thus the luminescence properties of rare earth ion is improved.

Abstract: A bonded ceramic component which is resistant to reactive halogen-containing plasmas, said component comprising ceramic portions which are bonded together by a bonding material which includes an oxyfluoride glass-ceramic-comprising transition area between interfaces of the ceramic portions, where the transition area includes from at least 0.1 volume % amorphous phase up to about 50 volume % amorphous phase.

Abstract: The present disclosure relates to fusion formable highly crystalline glass-ceramic articles whose composition lies within the SiO2—R2O3—Li2O/Na2O—TiO2 system and which contain a silicate crystalline phase comprised of lithium aluminosilicate (?-spodumene and/or ?-quartz solid solution) lithium metasilicate and/or lithium disilicate. Additionally, these silicate-crystal containing glass-ceramics can exhibit varying Na2O to Li2O molar ratio extending from the surface to the bulk of the glass article, particularly a decreasing Li2O concentration and an increasing Na2O concentration from surface to bulk. According to a second embodiment, disclosed herein is a method for forming a silicate crystalline phase-containing glass ceramic.

Abstract: Provided is a manufacturing method for a refractory filler, comprising melting a raw material batch and cooling the resultant melt to precipitate willemite as a main crystal phase.

Abstract: The invention relates to a process for preparing dental restorations, wherein a lithium silicate glass ceramic or a lithium silicate glass is used which contains at least 8.5 wt.-% transition metal oxide selected from the group consisting of oxides of yttrium, oxides of transition metals with an atomic number from 41 to 79 and mixtures of these oxides.

Abstract: A glass-ceramics composite material suitable for a low-temperature firing use, which has high moisture resistance and thermal conductivity, is provided. In the glass-ceramics composite material which contains aluminum nitride (AlN) particles as a filler, even in a case where boron oxide (B2O3) is blended as a flux of a glass phase, by adjusting the composition of raw materials which forms the glass phase to a specific conditions to make the crystal phase which contains boron (B) precipitate at the time of firing of the glass-ceramics composite material.

Abstract: An easily-administered technology which demonstrates the intrinsic thermal conductivity improvement effect by addition of non-oxide system compound crystal phase (filler particles) and makes it possible to sufficiently raise the thermal conductivity of a glass-ceramics composite material is provided. In the glass phase which constitutes a glass-ceramics composite material, the quantity of aluminum oxide (Al2O3) component is increased under a condition where at least either of zinc oxide (ZnO) component or magnesium oxide (MgO) component exists in a predetermined quantity or more. Thereby, the unintended reaction between a non-oxide system compound crystal phase and a glass phase can be suppressed, and the intrinsic thermal conductivity improvement effect by addition of non-oxide system compound crystal phase (filler particles) can be demonstrated.

Abstract: Lithium silicate glass ceramics and glasses are described which can advantageously be applied to zirconium oxide ceramics in particular by pressing-on in the viscous state and form a solid bond with these.

Abstract: A glass-ceramic having at least two crystal phases, wherein at least one crystal phase has a positive temperature dependence of the resonance frequency ?f, at least one crystal phase has a negative temperature dependence of the resonance frequency ?f and the glass-ceramic has a resulting temperature dependence of the resonance frequency ?f of 0 ppm/K with a maximum deviation of +/?20 ppm/K, is described. Furthermore, a process for producing such a glass-ceramic and the use of the glass-ceramic are described.

Abstract: The invention relates to a lithium silicate glass ceramic, which contains at least 8.5 wt.-% transition metal oxide selected from the group consisting of oxides of yttrium, oxides of transition metals with an atomic number from 41 to 79 and mixtures of these oxides. The invention also relates to a corresponding lithium silicate glass, a process for the preparation of the glass ceramic and of the glass as well as their use.

Abstract: A glass ceramic composition that contains a first ceramic including at least one of MgAl2O4 and Mg2SiO4; a second ceramic including BaO, RE2O3 (RE is a rare-earth element), and TiO2; glass containing each of 44.0 to 69.0 weight % of RO (R is an alkaline-earth metal), 14.2 to 30.0 weight % of SiO2, 10.0 to 20.0 weight % of B2O3, 0.5 to 4.0 weight % of Al2O3, 0.3 to 7.5 weight % of Li2O, and 0.1 to 5.5 weight % of MgO; and MnO.

Abstract: Crystallizable glasses, glass-ceramics, IXable glass-ceramics, and IX glass-ceramics are disclosed. The glass-ceramics exhibit ?-spodumene ss as the predominant crystalline phase. These glasses and glass-ceramics, in mole %, include: 62-75 SiO2; 10.5-17 Al2O3; 5-13 Li3O; 0-4 ZnO; 0-8 MgO; 2-5 TiO2; 0-4 B2O3; 0-5 Na2O; 0-4 K2O; 0-2 ZrO2; 0-7 P2O5; 0-0.3 Fe2O3; 0-2 MnOx; and 0.05-0.2 SnO2. Additionally, these glasses and glass-ceramics exhibit the following criteria: a. a ratio: [ Li 2 ? O + Na 2 ? O + K 2 ? O + MgO + ZnO _ ] ? [ Al 2 ? O 3 + B 2 ? O 3 ] between 0.7 to 1.5; b. a ratio: [ TiO 2 + SnO 2 _ ] ? [ SiO 2 + B 2 ? O 3 ] greater than 0.04. Furthermore, the glass-ceramics exhibit an opacity ?about 85% over the wavelength range of 400-700 nm for an about 0.

Abstract: The invention is directed to veneer ceramics for dental restorations of framework ceramics comprising yttrium-stabilized zirconium dioxide. It is the object of the invention to make possible a translucent veneer ceramic which has high flexural strength as well as excellent adhesion to the framework ceramic of yttrium-stabilized zirconium dioxide. According to the invention, this object is met in a veneer ceramic for dental restorations made of yttrium-stabilized zirconium dioxide which is produced from the following components: a) SiO2 58.0-74.0 percent by weight b) Al2O3 ?4.0-19.0 percent by weight c) Li2O ?5.0-17.0 percent by weight d) Na2O ?4.0-12.0 percent by weight e) ZrO2 ?0.5-6.0 percent by weight.

Abstract: Lithium silicate materials are described which can be easily processed by machining to dental products without undue wear of the tools and which subsequently can be converted into lithium silicate products showing high strength.

Abstract: Lithium silicate materials are described which can be easily processed by machining to dental products without undue wear of the tools.

Abstract: The invention provides a crystallizable glass, a crystallized glass, and manufacturing methods thereof. The crystallizable glass can be crystallized in a short period of time, and can maintain its glass shape and its surface condition during a crystallization process. The crystallized glass has good mechanical strength, an adequate thermal expansion coefficient that allows the crystallized glass to be used as a construction material, less content of alkali-metal oxides, and good chemical durability. The MgO—Al2O3—SiO2-based crystallizable glass and crystallized glass contain, by mass percent, 55.0-65.0% SiO2, 8.0-14.0% Al2O3, 10.0-20.0% MgO, 1.5-6.0% CaO, 1.0-2.2% Li2O, 0.7-3.0% Na2O, 2.5-4.0% K2O, and 1.5-3.0% F.

Abstract: 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.

Abstract: Embodiments of the present invention disclosed herein include a sintering aid composition that has a material useful for sintering, an amine, and optionally a carboxylic acid.

Abstract: A phosphosilicate glass ceramic with nanoscale fluoroapatite and leucite crystals. The glass ceramic is very similar to natural tooth material in terms of its optical properties. The glass ceramic has a low linear thermal expansion coefficient and a low pressing temperature and is therefore particularly suitable for pressing on metal alloys to produce dental restoration.

Abstract: Lithium silicate materials are described which can be easily processed by machining to dental products without undue wear of the tools and which subsequently can be converted into lithium silicate products showing high strength.

Abstract: A glass-ceramic composite encapsulation material composed of glass matrix materials of SiO2, Al2O3, BaO and B2O3, and at least one glass filler selected from the group consisting of kaliophilite (KAlSiO4), leucite (KAlSi2O6), magnesium oxide (MgO). The glass-ceramic composite encapsulation material according to the invention comprises a high temperature type glass matrix (softening point: 750-850° C.) and a intermediate temperature type glass matrix (softening point: 650-750° C.), and glass filler mixed therein, wherein said glass filler in the high temperature type glass matrix comprises 5% to 20% by volume of the total volume of said glass matrix and glass filler, and the glass filler in the intermediate temperature type glass matrix comprises 0% to 40% by volume of the total volume of said glass matrix and glass filler, and wherein said glass filler has an effect of adjusting the expansion coefficient.

Abstract: Glass-ceramic compositions exhibiting high reliability and tensile strength are described. The compositions can include crystal phases including roedderite and/or potassium fluorrichterite. The glass-ceramic compositions are bioactive, and can be used as components of a wide variety of biomedical devices such as dental restorations.

Abstract: For providing glass-ceramics having properties suitable for use as a substrate of an information storage medium of next generation such as one for the perpendicular magnetic recording system without employing arsenic and antimony components which adversely affect human beings and the environment, there are provided glass-ceramics comprising SiO2, Li2O and Al2O3 on oxide basis, comprising lithium disilicate as a crystal phase, and comprising one or more elements selected from the group consisting of Sn, Ce, Mn, W, Ta, Bi, Nb, S, Cl and F.