Abstract: A metal sealing glass is disclosed with a high thermal expansion coefficient, reduced bubbles and striae and a high-water resistance. The metal sealing glass contains, in mass % in terms of oxides, equal to or more than 60.0% and equal to or less than 75.0% of the SiO2 component, equal to or more than 9.0% and equal to or less than 18.0% of the B2O3 component, equal to or more than 3.0% and equal to or less than 9.0% of the Al2O3 component, equal to or more than 5.0% and equal to or less than 12.0% of the Na2O component, equal to or more than 0% and equal to or less than 1.65% of the K2O component with the thermal expansion coefficient of equal to or more than 60×10-7 K-1 and equal to or less than 72×10-7 K-1.

Abstract: To obtain a crystallized glass member having a curved shape and provide a method for producing the same. A method for producing a crystallized glass member having a curved shape, including a deformation step for adjusting the temperature of a plate glass to a first temperature zone from higher than [At+40]° C. to [At+146]° C. or lower, where At is the yield point (° C.) of the plate glass and deforming at least part of the plate glass into a curved shape by external force acting on the plate glass while precipitating crystals from the plate glass.

Abstract: A glass ceramic for an optical filter and an optical filter are obtained that have both thermal expansion characteristics for preventing refractive index fluctuations at a usage temperature of a filter member and mechanical characteristics considering durability, and further have excellent workability. An internal transmittance of the glass ceramic for an optical filter is 0.970 or more with respect to light having a wavelength of 1550 nm when a thickness of the glass ceramic is 1 mm. The glass ceramic includes, by mass % in terms of oxide, 40.0% to 70.0% of a SiO2 component, 11.0% to 25.0% of an Al2O3 component, 5.0% to 19.0% of a Na2O component, 0% to 9.0% of a K2O component, 1.0% to 18.0% of one or more components selected from a MgO component and a ZnO component, 0% to 3.0% of a CaO component, and 0.5% to 12.0% of a TiO2 component.

Abstract: As a solid electrolyte used in a lithium ion secondary battery, it has not been possible to obtain a lithium ion conductor precursor glass and a lithium ion conductor in which crystallization progresses at low temperatures and which exhibit high ion conductivity. The present invention can obtain a lithium ion conductor precursor glass and a lithium ion conductor in which crystallization progresses even at low temperatures and which exhibit high ion conductivity by containing 10-35% of a Li2O component, 20-50% of a P2O5 component, greater than 0% to 15% of an Al2O3 component, 20-50% of a GeO2 component and greater than 0% to 15% of a Bi2O3 component and/or a TeO2 component.

Abstract: Provided is a chemically strengthened optical glass with improved crack resistance and high hardness, in which the refractive index and the Abbe number required for a conventional optical glass are maintained. The chemically strengthened optical glass includes a compressive stress layer on a surface, and contains, by mass % in terms of oxide: 2.0 to 20.0% of a SiO2 component, 5.0 to 35.0% of a B2O3 component, 20.0 to 60.0% of a La2O3 component, 2.0 to 25.0% of a TiO2 component, 2.0 to 15.0% of a Nb2O5 component, and more than 0% to 10.0% of a LiO2 component, and the chemically strengthened optical glass is characterized in that an Hv change rate defined as [(Hvafter?Hvbefore)/Hvbefore]×100 is equal to or greater than 3.0%.

Abstract: The present invention addresses the problem of providing a conductive paste that achieves, when used for a lithium-ion secondary battery, low internal resistance and suppression of an increase in internal resistance after repeated charging and discharging. The present invention provides a conductive paste comprising a pigment dispersion resin (A), a conductive carbon (B), an inorganic material (C), and a solvent (D), wherein the pigment dispersion resin (A) has at least one polar functional group selected from the group consisting of an amide group, imide group, ether group, hydroxy group, carboxy group, sulfonate group, phosphate group, silanol group, amino group, and pyrrolidone group, and wherein the inorganic material (C) comprises at least one member selected from the group consisting of a glass, glass ceramic, and ceramic.

Abstract: Provided is a dielectric body having a high dielectric constant and a change rate of the dielectric constant of 30% or less, in a temperature range from ?50° C. to 350° C. An inorganic substance contains an oxide crystal including A and M (the A being one or more of P, Ge, and V, and the M being one or more of Nb and Ta), in which the dielectric constant is 500 or more. In the inorganic substance, the oxide crystal is one or more of PNb9O25, P2.5Nb18O50, GeNb9O25, GeNb18O47, GeNb19.144O50, VNb9O25, VNb9O24.9, PTa9O25, GeTa9O25, VTa9O25, and solid solutions thereof.

Abstract: The present invention provides a crystal of a europium compound containing europium. The present invention enables the preparation of a crystal of a europium compound having a powder X-ray diffraction pattern having a first diffraction peak in diffraction angle (2?) range of 34.3° to 36.1° in which a half width of the first diffraction peak is 1.8° or less, and/or having a second diffraction peak in diffraction angle (2?) range of 28.6° to 29.6° and a third diffraction peak in diffraction angle (2?) range of 36.8° to 38.4° in which a half width of the second diffraction peak is 1.0° or less and a half width of the third diffraction peak is 1.6° or less, and being at least one compound selected from compounds represented by formulae (1) to (4): EuClx??(1) Eu(OH)2??(2) Eu(OH)2Cl??(3) EuOCl??(4) x is 0.05 or more and 5 or less.

Abstract: There is provided an optical glass, in which a refractive index (nd) at a wavelength of the d line of helium (587.6 nm) is in a range of 1.45000 to 1.65000; an ISO color contribution index ISO/CCI is 0.00 for blue (B), 0.80 or less for green (G), and 0.80 or less for red (R); and an S value is 0.70×106 or more and less than 1.03×106 (Pa/° C.), the S value being obtained by the equation: S=E·?/(1??), in which E is Young's modulus (unit: GPa); ? is an average coefficient of linear expansion in a temperature range of 100° C. to 300° C. (unit: 10?7° C.?1); and ? is Poisson's ratio.

Abstract: A method for manufacturing a crystallized glass member having a curved shape includes a deforming step of deforming at least a portion of a glass plate into a curved shape by an external force that acts on the glass plate while maintaining the temperature of the glass plate within a first temperature range and precipitating crystals from the glass plate. In the method for manufacturing a crystallized glass member having a curved shape according to Claim 1, the first temperature range is from [At?40]° C. to [At+40]° C., wherein At (° C.) is a yield point of the glass plate.

Abstract: The lithium ion conductive material includes, in mole percent on an oxide basis, 36.6 to 37.3% of a P2O5 component, 43.0 to 48.1% of a TiO2 component, 0.6 to 3.2% of an Al2O3 component and 13.9 to 17.5% of a Li2O component, wherein a mole percent of the Al2O3 component is 0.3 to 3.0% by mole smaller than a mole percent of an Al2O3 component calculated by the composition formula Li1+xAlxTi2-xP3O12 (x=0.05 to 0.4) derived from the composition of Ti and Li, and a mole percent of the P2O5 component is 0.2 to 2.0% by mole smaller than a mole percent of a P2O5 component calculated by the above composition formula, and wherein the lithium ion conductive material further includes a crystal phase with a rhombohedral NASICON structure or a Li1+xAlxTi2-xP3O12 (x?0) crystal phase.

Abstract: Provided is a crystallized glass substrate including a surface with a compressive stress layer, in which a gradient A of a surface compressive stress from an outermost surface to a depth of 6 ?m in the compressive stress layer is 50.0 to 110.0 MPa/?m, a gradient B of a surface compressive stress from a depth of (a stress depth DOLzero—10 ?m) to the stress depth DOLzero is 2.5 to 15.0 MPa/?m, where the stress depth DOLzero is a depth of the compressive stress layer at a surface compressive stress of 0 MPa, and a hardness of the outermost surface at an indentation depth of 20 nm is 7.50 to 9.50 GPa.

Abstract: To provide a crystallized glass substrate including a surface with a compressive stress layer, in which a compressive stress CS (MPa) on an outermost surface of the compressive stress layer is 400 to 1400 MPa, and DOL50%/DOLzero is 0.30 or more, where DOL50% (?m) is a depth at which the value of the compressive stress is 50% of the CS and DOLzero (?m) is a depth at which the value of the compressive stress is 0 MPa.

Abstract: To provide a crystallized glass substrate including a surface with a compressive stress layer, in which, CS is 400 to 1400 MPa and CT×(T?2×DOLzero)/CS×DOLzero is 0.60 or more, where CS (MPa) denotes a compressive stress on an outermost surface of the compressive stress layer, DOLzero (?m) denotes a stress depth of the compressive stress layer at which the compressive stress is 0 MPa, CT (MPa) denotes a central stress determined by curve analysis, and T (?m) denotes a thickness of the substrate.

Abstract: To provide a crystallized glass substrate including a surface with a compressive stress layer, in which a stress depth DOLzero of the compressive stress layer, at which the compressive stress is 0 MPa, is 45 to 200 ?m, a compressive stress CS on an outermost surface of the compressive stress layer is 400 to 1400 MPa, and CS×DOLzero, which is a product of the compressive stress CS on the outermost surface and the stress depth DOLzero (?m), is 4.8×104 or more.

Abstract: To provide a crystallized glass substrate including a surface with a compressive stress layer, where a stress depth DOLzero of the compressive stress layer, at which the compressive stress is 0 MPa, is 45 to 200 ?m, a compressive stress CS on an outermost surface of the compressive stress layer is 400 to 1400 MPa, and a central stress CT determined by using curve analysis is 55 to 300 MPa.

Abstract: To provide an inorganic composition article containing at least one kind selected from ?-cristobalite and ?-cristobalite solid solution as a main crystal phase, in which by mass % in terms of oxide, a content of a SiO2 component is 50.0% to 75.0%, a content of a Li2O component is 3.0% to 10.0%, a content of an Al2O3 component is 5.0% or more and less than 15.0%, and a total content of the Al2O3 component and a ZrO2 component is 10.0% or more, and a surface compressive stress value is 600 MPa or more.

Abstract: To provide a crystallized glass substrate including a surface with a compressive stress layer, in which a stress depth DOLzero of the compressive stress layer, at which the compressive stress is 0 MPa, is 45 to 200 ?m, a compressive stress CS on an outermost surface of the compressive stress layer is 400 to 1400 MPa, and CS×DOLzero, which is a product of the compressive stress CS on the outermost surface and the stress depth DOLzero (?m), is 4.8×104 or more.

Abstract: To provide a crystallized glass substrate including a surface with a compressive stress layer, where a stress depth DOLzero of the compressive stress layer, at which the compressive stress is 0 MPa, is 45 to 200 ?m, a compressive stress CS on an outermost surface of the compressive stress layer is 400 to 1400 MPa, and a central stress CT determined by using curve analysis is 55 to 300 MPa.

Abstract: To provide an optical glass having the optical characteristics of a high refractive index and low dispersion, and moreover, which makes it possible to further reduce devitrification and which can be stably obtained, and a preform and an optical element using the same. The optical glass comprises, expressed in cation % (mol %), 17.0% to 42.0% of P5+, 7.0% to 30.0% of Al3+, more than 0% to 22.0% of Mg2+, more than 0% to 25.0% Ca2+, more than 0% to 30.0% of Sr2+, more than 0% to 35.0% Ba2+, and expressed in anion % (mol %), a content ratio of F? of 37.0 to 64.0%, a content ratio of O2? of 36.0 to 63.0%, a refractive index (nd) of 1.48 to 1.58, and having an Abbe number (vd) of 70 to 88, and a liquidus temperature of 800° C. or less.