A glass composition includes, as expressed by mol % in terms of oxide, from 15 to 40% of PbO, from 25 to 50% of MoO.sub.3, from 5 to 25% of P.sub.2O.sub.5 and from 7 to 15% of ZnO. A glass powder includes the glass composition. The glass powder has D.sub.50 of from 0.3 to 2.0 m, where D.sub.50 is a 50% particle diameter in a volume-based cumulative particle size distribution.

Disclosed are non-porous inorganic frit compositions, which permit the decoration of ion-exchangeable glass-based substrates before the ion exchange chemical strengthening processes. When fired, the non-porous inorganic frit compositions comprise a crystallized phase and/or a T greater than about 80 C. Also disclosed are strengthened glass-based substrates having one or more non-porous inorganic layers, glass-based articles comprising strengthened glass-based substrates having one or more non-porous inorganic layers, and methods of making the same.

A material, especially a glassy material of pyrophosphate type, corresponding to the general formula (I): {[(M.sup.2+).sub.1x(R.sup.+).sub.2x].sub.2[(P.sub.2O.sub.7.sup.4).sub.1y(PO.sub.4.sup.3).sub.4y/3]} n(H.sub.2O) in which x and y are positive rational numbers each between 0 and 0.8, and n is such that the weight percentage of water in the material is greater than 0 and less than or equal to 95. M.sup.2+ represents a bivalent ion of a metal chosen from calcium, magnesium, strontium, copper, zinc, cobalt, manganese and nickel, or any mixture of such bivalent ions. R.sup.+ represents a monovalent ion of a metal selected from potassium, lithium, sodium, and silver, or any mixture of such monovalent ions. This material in particular can be used in manufacturing of bone replacements or prosthesis coatings.

A material, especially a glassy material of pyrophosphate type, corresponding to the general formula (I): {[(M.sup.2+).sub.1x(R.sup.+).sub.2x].sub.2[(P.sub.2O.sub.7.sup.4).sub.1y(PO.sub.4.sup.3).sub.4y/3]} n(H.sub.2O) in which x and y are positive rational numbers each between 0 and 0.8, and n is such that the weight percentage of water in the material is greater than 0 and less than or equal to 95. M.sup.2+ represents a bivalent ion of a metal chosen from calcium, magnesium, strontium, copper, zinc, cobalt, manganese and nickel, or any mixture of such bivalent ions. R.sup.+ represents a monovalent ion of a metal selected from potassium, lithium, sodium, and silver, or any mixture of such monovalent ions. This material in particular can be used in manufacturing of bone replacements or prosthesis coatings.

Provided are an inorganic fluorescent nanoparticle composite that can suppress the degradation of inorganic fluorescent nanoparticles when sealed in glass and a wavelength conversion member using the inorganic fluorescent nanoparticle composite. An inorganic fluorescent nanoparticle composite 1 is made up by including: an inorganic fluorescent nanoparticle 2; and an inorganic fine particle 3 deposited on a surface of the inorganic fluorescent nanoparticle 2.

Provided is a method for manufacturing a wavelength conversion member by which unevenness in luminescent color are less likely to occur. A method for manufacturing a wavelength conversion member includes the steps of: preparing a slurry containing glass particles to be a glass matrix 2 and phosphor particles 3; forming a green sheet by applying the slurry onto a support substrate and moving a doctor blade relative to the slurry, the doctor blade being spaced a predetermined distance away from the support substrate; forming a green sheet laminate by applying heat and pressure to a plurality of the green sheets overlaid one upon another; and sintering the green sheet laminate to obtain a wavelength conversion member, wherein in the step of forming a green sheet laminate, the plurality of green sheets are overlaid one upon another so that, as for at least two of the plurality of green sheets, respective directions of movement of the doctor blade in the step of forming a green sheet intersect each other.

There is disclosed a heat-insulating member including a pair of substrates and an airtight sealing part, in which the airtight sealing part is formed in an outer peripheral part between the pair of substrates to form a space between the pair of substrates, the space being in a vacuum or reduced pressure state, a sealing material that forms the airtight sealing part includes a low-melting glass, and the low-melting glass contains a vanadium oxide, barium oxide, phosphorus oxide, and tungsten oxide, in which the following two relational expressions are satisfied in terms of oxide contents: V.sub.2O.sub.5+BaO+P.sub.2O.sub.5+WO.sub.390 and V.sub.2O.sub.5>BaO>P.sub.2O.sub.5>WO.sub.3 (wherein unit: mol %). Thereby, influence on environmental impact can be reduced and maintenance of airtightness and an improvement in acid resistance can be achieved.

There is disclosed a heat-insulating member including a pair of substrates and an airtight sealing part, in which the airtight sealing part is formed in an outer peripheral part between the pair of substrates to form a space between the pair of substrates, the space being in a vacuum or reduced pressure state, a sealing material that forms the airtight sealing part includes a low-melting glass, and the low-melting glass contains a vanadium oxide, barium oxide, phosphorus oxide, and tungsten oxide, in which the following two relational expressions are satisfied in terms of oxide contents: V.sub.2O.sub.5+BaO+P.sub.2O.sub.5+WO.sub.390 and V.sub.2O.sub.5>BaO>P.sub.2O.sub.5>WO.sub.3 (wherein unit: mol %). Thereby, influence on environmental impact can be reduced and maintenance of airtightness and an improvement in acid resistance can be achieved.

An apparatus including a first substrate, a second substrate, an inorganic film provided between the first substrate and the second substrate and in contact with both the first substrate and the second substrate, a laser welded zone formed between the first and second substrate by the inorganic film, where the laser welded zone has a heat affected zone (HAZ), where the HAZ is defined as a region in which .sub.HAZ is at least 1 MPa higher than average stress in the first substrate and the second substrate, wherein .sub.HAZ is compressive stress in the HAZ, and wherein the laser welded zone is characterized by its .sub.interface laser weld>.sub.HAZ, wherein .sub.interface laser weld is peak value of compressive stress in the laser welded zone.

An apparatus including a first substrate, a second substrate, an inorganic film provided between the first substrate and the second substrate and in contact with both the first substrate and the second substrate, a laser welded zone formed between the first and second substrate by the inorganic film, where the laser welded zone has a heat affected zone (HAZ), where the HAZ is defined as a region in which .sub.HAZ is at least 1 MPa higher than average stress in the first substrate and the second substrate, wherein .sub.HAZ is compressive stress in the HAZ, and wherein the laser welded zone is characterized by its .sub.interface laser weld>.sub.HAZ, wherein .sub.interface laser weld is peak value of compressive stress in the laser welded zone.