Glass composition and standard sample glass

Abstract

The invention relates to a glass composition, which comprises the following main components, and at least any one of Ti, V, Cr, Mn, Fe, Co, Ni, Cu, Zn, Zr, Nb, Mo, Hf, Ta, W, Sc, Y, La, Ce, Pr, Nd, Sm, Eu, Gd, Tb, Dy, Ho, Er, Tm, Yb, Lu, Rb, Cs, Ba, Ga, Ge, In, Sn, Sb, Pb, Bi, Au, Pt, Ag, Ir, Pd, Rh, Ru, Re, F, Cl, Br, I, and S, which are introduced in an amount of more than 0 mg / kg and not more than 1500 mg / kg for each of the added components.

Description

Technical Field

[0001] The present invention relates to glass compositions and standard sample glasses. Background Art

[0002] In elemental analysis of solid matter by inductively coupled plasma (ICP) mass spectrometry, secondary ion mass spectrometry (SIMS), X-ray fluorescence analysis (XRF), etc., a solid standard sample is required that enables analysis of trace elements.

[0003] Prior art literature

[0004] Patent Literature

[0005] Patent Document 1: U.S. Patent No. 8742334 Summary of the invention

[0006] One embodiment of the present invention is a glass composition comprising a main component; and at least one of Ti, V, Cr, Mn, Fe, Co, Ni, Cu, Zn, Zr, Nb, Mo, Hf, Ta, W, Sc, Y, La, Ce, Pr, Nd, Sm, Eu, Gd, Tb, Dy, Ho, Er, Tm, Yb, Lu, Rb, Cs, Ba, Ga, Ge, In, Sn, Sb, Pb, Bi, Au, Pt, Ag, Ir, Pd, Rh, Ru, Re, F, Cl, Br, I, and S, introduced in an amount of more than 0 mg / kg and not more than 1500 mg / kg for each additional component. In addition, one embodiment of the present invention is a glass composition, wherein the TeO2 content is 50% to 90% by mass; and it contains at least 2 selected from the group consisting of Bi2O3, B2O3, GeO2, Al2O3, Ga2O3, Li2O, La2O3, BaO, ZnO and WO3. In addition, one embodiment of the present invention is a glass composition, wherein the main components are, in mass %, TeO2 content: 55% to 90%, Bi2O3 content: 0% to 35%, B2O3 content: 0% to 20%, GeO2 content: 0% to 20%, Al2O3 content: 0% to 20%, Ga2O3 content: 0% to 20%, Li2O content: 0% to 10%, and La2O3 content: 0% to 5%, and as an additive component, at least any one of Ti, V, Cr, Mn, Fe, Co, Ni, Cu, Zn, Zr, Nb, Mo, Hf, Ta and W is introduced in an amount of each of the above-mentioned additives exceeding 0 mg / kg and not more than 1500 mg / kg. In addition, one embodiment of the present invention is a glass composition, wherein the main components are, in mass %, TeO2 content: 50% to 90%, Bi2O3 content: 0% to 20%, B2O3 content: 0% to 20%, GeO2 content: 0% to 20%, Al2O3 content: 0% to 20%, Ga2O3 content: 0% to 20%, BaO content: 0% to 30%, ZnO content: 0% to 20%, Li2O content: 0% to 10%, and WO3 content: 0% to 35%, and as an additive component, at least any one of Sc, Y, La, Ce, Pr, Nd, Sm, Eu, Gd, Tb, Dy, Ho, Er, Tm, Yb and Lu is introduced in an amount of each of the above-mentioned additives exceeding 0 mg / kg and not more than 1500 mg / kg.In addition, one embodiment of the present invention is a glass composition, wherein the main components are, in mass %, TeO2 content: 50% to 90%, Bi2O3 content: 0% to 30%, B2O3 content: 0% to 20%, Al2O3 content: 0% to 20%, ZnO content: 0% to 20%, Li2O content: 0% to 10%, La2O3 content: 0% to 5%, and WO3 content: 0% to 35%, and as the above-mentioned additive components, at least any one of Rb, Cs, Ba, Ga, Ge, In, Sn, Sb, Pb and Bi is introduced in an amount of each of the above-mentioned additive components exceeding 0 mg / kg and not more than 1500 mg / kg. In addition, one embodiment of the present invention is a glass composition, wherein the main components are, in mass %, TeO2 content: 50% to 85%, Bi2O3 content: 0% to 35%, B2O3 content: 0% to 15%, GeO2 content: 0% to 20%, Al2O3 content: 0% to 10%, Ga2O3 content: 0% to 20%, BaO content: 0% to 30%, ZnO content: 0% to 20%, Li2O content: 0% to 10%, La2O3 content: 0% to 5%, and WO3 content: 0% to 35%, and as an additive component, at least any one of Au, Pt, Ag, Ir, Pd, Rh, Ru and Re is introduced in an amount of each of the above-mentioned additives exceeding 0 mg / kg and not more than 1500 mg / kg. In addition, one embodiment of the present invention is a glass composition, wherein the main components are, in mass %, TeO2 content: 50% to 90%, Bi2O3 content: 0% to 30%, B2O3 content: 0% to 15%, GeO2 content: 0% to 20%, Al2O3 content: 0% to 20%, Ga2O3 content: 0% to 20%, BaO content: 0% to 30%, ZnO content: 0% to 20%, Li2O content: 0% to 10%, La2O3 content: 0% to 5%, and WO3 content: 0% to 35%, and as an additive component, at least any one of F, Cl, Br, I and S is introduced in an amount of each of the above-mentioned additives exceeding 0 mg / kg and not more than 1500 mg / kg.

[0007] Another embodiment of the present invention is a standard sample glass, which is a standard sample for element analysis, comprising: a first glass composition, into which Ti, V, Cr, Mn, Fe, Co, Ni, Cu, Zn, Zr, Nb, Mo, Hf, Ta, W, Sc, Y, La, Ce, Pr, Nd, Sm, Eu, Gd, Tb, Dy, Ho, E are introduced as additive components in an amount (first content) of each additive component of 0 mg / kg or more and 1500 mg / kg or less. at least any one of r, Tm, Yb, Lu, Rb, Cs, Ba, Ga, Ge, In, Sn, Sb, Pb, Bi, Au, Pt, Ag, Ir, Pd, Rh, Ru, Re, F, Cl, Br, I and S; and a second glass composition, in which at least any one of the additional components is introduced in an amount (second content) of each additional component exceeding 0 mg / kg and not more than 1500 mg / kg, and the second content is greater than the first content. DETAILED DESCRIPTION

[0008] In this specification, unless otherwise stated, the content of each main component is all in mass % relative to the total weight of the glass in terms of oxide conversion composition. The oxide conversion composition referred to herein refers to the following composition: assuming that the oxides, complex salts, etc. used as raw materials for glass components are all decomposed into oxides during melting, the total mass of the oxides is set to 100% to represent the components contained in the glass. In addition, for the content of added components, unless otherwise stated, the content in the form of introduced oxides, chlorides, fluorides, etc. is expressed in "mg / kg". "mg / kg" has the same meaning as mass ppm.

[0009] The expression "0% to N%" for the Q content includes a case where no Q component is contained and a case where the Q component exceeds 0% and is N% or less.

[0010] In addition, the term "devitrification stability" refers to the resistance to devitrification of glass. Here, "devitrification" refers to the phenomenon of loss of transparency of glass due to crystallization or phase separation when the temperature of glass is raised to above the glass transition temperature or when the temperature of glass is lowered from a molten state to below the liquidus temperature.

[0011] An embodiment of the present invention (hereinafter referred to as "this embodiment") will be described below. The following this embodiment is an example for describing the present invention, and is not intended to limit the present invention to the following contents.

[0012] The glass composition and standard sample glass of the present embodiment are glasses with tellurite glass as the base material and a trace amount (ppm level) of additive components uniformly added. Therefore, they can be used as reference samples for local trace analysis such as laser ablation, inductively coupled plasma (ICP) mass analysis, secondary ion mass analysis (SIMS), and fluorescent X-ray analysis (XRF).

[0013] The glass composition of this embodiment and the standard sample glass have low melting temperatures and high devitrification resistance stability. The glass composition manufactured in the past contains trace amounts of undesired elements as "impurities". The glass composition of this embodiment is a glass composition that suppresses the inclusion of undesired elements and contains trace amounts of desired elements.

[0014] <Glass Composition>

[0015] The glass composition of the present embodiment is a glass composition comprising main components and the following additive components: at least one of Ti, V, Cr, Mn, Fe, Co, Ni, Cu, Zn, Zr, Nb, Mo, Hf, Ta, W, Sc, Y, La, Ce, Pr, Nd, Sm, Eu, Gd, Tb, Dy, Ho, Er, Tm, Yb, Lu, Rb, Cs, Ba, Ga, Ge, In, Sn, Sb, Pb, Bi, Au, Pt, Ag, Ir, Pd, Rh, Ru, Re, F, Cl, Br, I and S is introduced therein in an amount of more than 0 mg / kg and not more than 1500 mg / kg for each of the additive components.

[0016] In addition, the glass composition of this embodiment is a glass composition having a TeO2 content of 50% to 90% by mass and comprising at least two selected from the group consisting of Bi2O3, B2O3, GeO2, Al2O3, Ga2O3, Li2O, La2O3, BaO, ZnO and WO3.

[0017] In addition, the glass composition of the present embodiment is a glass composition, mainly containing components, in mass %, of TeO2 content: 55% to 90%, Bi2O3 content: 0% to 35%, B2O3 content: 0% to 20%, GeO2 content: 0% to 20%, Al2O3 content: 0% to 20%, Ga2O3 content: 0% to 20%, Li2O content: 0% to 10%, and La2O3 content: 0% to 5%, and as an additive component, at least any one of Ti, V, Cr, Mn, Fe, Co, Ni, Cu, Zn, Zr, Nb, Mo, Hf, Ta and W is introduced therein in an amount of each of the above-mentioned additive components exceeding 0 mg / kg and not more than 1500 mg / kg.

[0018] In addition, the glass composition of the present embodiment is a glass composition, which mainly contains, in mass %, TeO2 content: 50% to 90%, Bi2O3 content: 0% to 20%, B2O3 content: 0% to 20%, GeO2 content: 0% to 20%, Al2O3 content: 0% to 20%, Ga2O3 content: 0% to 20%, BaO content: 0% to 30%, ZnO content: 0% to 20%, Li2O content: 0% to 10%, and WO3 content: 0% to 35%, and as an additive component, at least any one of Sc, Y, La, Ce, Pr, Nd, Sm, Eu, Gd, Tb, Dy, Ho, Er, Tm, Yb and Lu is introduced therein in an amount of each of the above-mentioned additive components exceeding 0 mg / kg and not more than 1500 mg / kg.

[0019] In addition, the glass composition of the present embodiment is a glass composition, mainly containing components, in mass %, TeO2 content: 50% to 90%, Bi2O3 content: 0% to 30%, B2O3 content: 0% to 20%, Al2O3 content: 0% to 20%, ZnO content: 0% to 20%, Li2O content: 0% to 10%, La2O3 content: 0% to 5%, and WO3 content: 0% to 35%, and as the added component, at least any one of Rb, Cs, Ba, Ga, Ge, In, Sn, Sb, Pb and Bi is introduced therein in an amount of each of the added components exceeding 0 mg / kg and being less than 1500 mg / kg.

[0020] In addition, the glass composition of the present embodiment is a glass composition, mainly containing components, in mass %, of TeO2 content: 50% to 85%, Bi2O3 content: 0% to 35%, B2O3 content: 0% to 15%, GeO2 content: 0% to 20%, Al2O3 content: 0% to 10%, Ga2O3 content: 0% to 20%, BaO content: 0% to 30%, ZnO content: 0% to 20%, Li2O content: 0% to 10%, La2O3 content: 0% to 5%, and WO3 content: 0% to 35%, and as an additive component, at least any one of Au, Pt, Ag, Ir, Pd, Rh, Ru and Re is introduced therein in an amount of each of the above-mentioned additive components exceeding 0 mg / kg and being less than 1500 mg / kg.

[0021] In addition, the glass composition involved in the present embodiment is a glass composition, which mainly contains, in mass %, TeO2 content: 50% to 90%, Bi2O3 content: 0% to 30%, B2O3 content: 0% to 15%, GeO2 content: 0% to 20%, Al2O3 content: 0% to 20%, Ga2O3 content: 0% to 20%, BaO content: 0% to 30%, ZnO content: 0% to 20%, Li2O content: 0% to 10%, La2O3 content: 0% to 5%, and WO3 content: 0% to 35%, and as an additive component, at least any one of F, Cl, Br, I and S is introduced therein in an amount of each of the above-mentioned additive components exceeding 0 mg / kg and being less than 1500 mg / kg.

[0022] Hereinafter, the component composition of the glass composition according to the present embodiment will be described.

[0023] The main components of the glass composition of this embodiment refer to various oxides such as TeO2, Bi2O3, GeO2, Ga2O3, BaO, ZnO, WO3, etc. that can generally become the matrix of glass, and refer to glass components other than added components.

[0024] TeO2 is a necessary main component in the present embodiment, and is a component that lowers the melting temperature of the glass and improves the stability against devitrification. However, if its content is too high, the stability against devitrification will decrease. From this aspect, the content of TeO2 is 50% or more and 90% or less. The lower limit of the content is preferably 55%, more preferably 60%, and further preferably 65%. The upper limit of the content is preferably 85%, more preferably 80%, and further preferably 75%.

[0025] Bi2O3 is a component used as the main component in the present embodiment, which is to reduce the melting temperature of the glass, and to make it coexist with TeO2 to improve the stability of the glass against devitrification. However, if its content is too high, the content of TeO2 will be relatively reduced, which will deteriorate the stability against devitrification. From this aspect, the content of Bi2O3 is more than 0% and less than 35%. The lower limit of this content is preferably 10%, more preferably 15%, and further preferably 20%. The upper limit of this content is preferably 30%, more preferably 27%, and further preferably 24%.

[0026] B2O3 is a component used as the main component in this embodiment, and is a component that improves the anti-devitrification stability of the glass. However, if its content is too high, the melting temperature will rise. From this aspect, the content of B2O3 is more than 0% and less than 20%. The lower limit of the content is preferably 2%, more preferably 4%, and further preferably 6%. The upper limit of the content is preferably 16%, more preferably 14%, and further preferably 10%.

[0027] GeO2 is a component used as the main component in this embodiment, and is a component that improves the anti-devitrification stability of glass. However, if its content is too high, the melting temperature of glass will rise. In addition, GeO2 is still an expensive raw material. From this aspect, the content of GeO2 is more than 0% and less than 20%. The lower limit of this content is preferably 4%, more preferably 8%, and further preferably 12%. The upper limit of this content is preferably 18%, more preferably 16%, and further preferably 14%.

[0028] Al2O3 is a component used as the main component in this embodiment, and is a component that can improve the devitrification resistance stability of glass when added in an appropriate amount. However, if its content is too high, the melting temperature will rise, which will reduce the devitrification resistance stability. From this aspect, the content of Al2O3 is more than 0% and less than 20%. The lower limit of this content is preferably 4%, more preferably 8%, and further preferably 10%. The upper limit of this content is preferably 17%, more preferably 14%, and further preferably 12%.

[0029] Ga2O3 is a component used as the main component in this embodiment, and is a component that improves the anti-devitrification stability of glass. However, if its content is too high, the melting temperature of glass will rise. In addition, Ga2O3 is still an expensive raw material. From this aspect, the content of Ga2O3 is more than 0% and less than 20%. The lower limit of this content is preferably 4%, more preferably 8%, and further preferably 12%. The upper limit of this content is preferably 18%, more preferably 16%, and further preferably 14%.

[0030] BaO is a component used as the main component in the present embodiment, and is a component that improves the anti-devitrification stability of glass and makes it coexist with TeO2 to improve the anti-devitrification stability of glass. However, if its content is too high, the melting temperature of glass will rise. From such an aspect, the content of BaO is more than 0% and less than 30%. The lower limit of this content is preferably 10%, more preferably 15%, and further preferably 20%. The upper limit of this content is preferably 28%, more preferably 25%, and further preferably 22%.

[0031] ZnO is a component used as the main component in the present embodiment, and is a component that improves the anti-devitrification stability of glass and makes it coexist with TeO2 to improve the anti-devitrification stability of glass. However, if its content is too high, the melting temperature of glass will rise. From such an aspect, the content of ZnO is more than 0% and less than 20%. The lower limit of this content is preferably 2%, more preferably 6%, and further preferably 10%. The upper limit of this content is preferably 18%, more preferably 16%, and further preferably 14%.

[0032] Li2O is a component used as a main component in this embodiment, and is a component that lowers the melting temperature of the glass and improves the solubility. However, if its content is too high, the viscosity of the glass decreases and the stability against devitrification decreases. From this aspect, the content of Li2O is 0% or more and 10% or less. The lower limit of the content is preferably 0.5%, more preferably 1.5%, and further preferably 2.5%. The upper limit of the content is preferably 8%, more preferably 6%, and further preferably 3.5%.

[0033] La2O3 is a component used as the main component in this embodiment, and adding an appropriate amount has the effect of improving the stability against devitrification. However, if its content is too high, the melting temperature of the glass will rise, the solubility will decrease, and the stability against devitrification will also decrease. From this aspect, the content of La2O3 is more than 0% and less than 5%. The lower limit of the content is preferably 0.4%, more preferably 0.8%, and further preferably 1.2%. The upper limit of the content is preferably 4%, more preferably 3%, and further preferably 2%.

[0034] WO3 is a component used as the main component in the present embodiment, which is to reduce the melting temperature of the glass, so that it can coexist with TeO2 to improve the stability of the glass against devitrification. However, if its content is too high, the content of TeO2 will be relatively reduced, which will deteriorate the stability against devitrification. From this aspect, the content of WO3 is more than 0% and less than 35%. The lower limit of this content is preferably 15%, more preferably 20%, and more preferably 25%. The upper limit of this content is preferably 33%, more preferably 30%, and more preferably 27%.

[0035] The present invention is not limited to the above-mentioned main components, and other main components can be added within the range that does not hinder the achievement of the glass composition as the purpose (set as the target) of the present embodiment. In addition, except for TeO2, an essential component of the present invention, when any of the above-mentioned main components is not used as a main component in the present embodiment, the unused component (for example, Zn, W, La, Ba, Ga, Ge, Bi, etc.) can be introduced into the glass composition in the present embodiment as an added component.

[0036] The content of the main component having the second highest content after the essential component TeO2 is, in mass%, 10% or more and 35% or less. The lower limit of the content is preferably 15%, more preferably 18%, and further preferably 21%. The upper limit of the content is preferably 30%, more preferably 27%, and further preferably 24%.

[0037] The glass composition of the present embodiment may be added with elements in accordance with the purpose of elemental analysis, etc. The added elements are divided into a first additive component group to a fifth additive component group.

[0038] The first additive group (transition elements) is preferably Ti, V, Cr, Mn, Fe, Co, Ni, Cu, Zn, Zr, Nb, Mo, Hf, Ta, W, etc., which are introduced into the glass composition of this embodiment in the form of oxides, hydroxides, carbonates, nitrates, etc.

[0039] The second group of additive components (rare earth elements), preferably Sc, Y, La, Ce, Pr, Nd, Sm, Eu, Gd, Tb, Dy, Ho, Er, Tm, Yb, Lu, etc., are introduced into the glass composition of this embodiment in the form of oxides, hydroxides, carbonates, nitrates, etc.

[0040] The third additive component group, preferably Rb, Cs, Ba, Ga, Ge, In, Sn, Sb, Pb, Bi, etc., is introduced into the glass composition of this embodiment in the form of oxides, hydroxides, carbonates, nitrates, etc.

[0041] The fourth additive component group (precious metal elements) is preferably Au, Pt, Ag, Ir, Pd, Rh, Ru, Re, etc., which are introduced into the glass composition of this embodiment in the form of oxides, chlorides, etc.

[0042] The fifth additive component group (non-metallic elements) is preferably F, Cl, Br, I, S, etc., which is introduced into the glass composition of this embodiment in the form of fluoride, chloride, bromide, iodide, sulfide, sulfate, etc.

[0043] In addition, 1 to 16 additives are introduced into one glass according to the purpose. The number of additives introduced is preferably 3, more preferably 2, and even more preferably 1. Moreover, as for additives, multiple additives selected from multiple additive groups can also be introduced into one glass. It should be noted that the additives must be elements other than cations in the oxide of the main component.

[0044] The additive components are introduced into one glass in a mass of more than 0 mg / kg (= mass ppm) and less than 1500 mg / kg. The lower limit of the amount of the additive components introduced is preferably 15 mg / kg, more preferably 30 mg / kg, and further preferably 40 mg / kg. The upper limit of the amount of the additive components introduced is preferably 1400 mg / kg, more preferably 1250 mg / kg, and further preferably 1050 mg / kg.

[0045] The present invention is not limited to the above-mentioned components, and other arbitrary components may be added within a range that does not hinder the achievement of the target glass composition in the present embodiment.

[0046] <Glass Composition Containing the First Additive Group>

[0047] In particular, in the glass composition including the first additive group, TeO2 is a necessary main component in the present embodiment, and is a component that lowers the melting temperature of the glass and improves the stability against devitrification. However, if its content is too high, the stability against devitrification is reduced. From this aspect, the content of TeO2 is 55% or more and 90% or less. The lower limit of the content is preferably 60%, more preferably 65%, and further preferably 70%. The upper limit of the content is preferably 85%, more preferably 80%, and further preferably 75%.

[0048] Bi2O3 is a component used as the main component in the present embodiment, which is to reduce the melting temperature of the glass, and to make it coexist with TeO2 to improve the stability of the glass against devitrification. However, if its content is too high, the content of TeO2 will be relatively reduced, which will deteriorate the stability against devitrification. From this aspect, the content of Bi2O3 is more than 0% and less than 35%. The lower limit of this content is preferably 10%, more preferably 15%, and further preferably 20%. The upper limit of this content is preferably 30%, more preferably 27%, and further preferably 24%.

[0049] B2O3 is a component used as the main component in this embodiment, and is a component that improves the anti-devitrification stability of the glass. However, if its content is too high, the melting temperature will rise. From this aspect, the content of B2O3 is more than 0% and less than 20%. The lower limit of the content is preferably 2%, more preferably 4%, and further preferably 6%. The upper limit of the content is preferably 16%, more preferably 14%, and further preferably 10%.

[0050] GeO2 is a component used as the main component in this embodiment, and is a component that improves the anti-devitrification stability of glass. However, if its content is too high, the melting temperature of glass will rise. In addition, GeO2 is still an expensive raw material. From this aspect, the content of GeO2 is more than 0% and less than 20%. The lower limit of this content is preferably 4%, more preferably 8%, and further preferably 12%. The upper limit of this content is preferably 18%, more preferably 16%, and further preferably 14%.

[0051] Al2O3 is a component used as the main component in this embodiment, and is a component that can improve the devitrification resistance stability of glass when added in an appropriate amount. However, if its content is too high, the melting temperature will rise, and the devitrification resistance stability will decrease. From this aspect, the content of Al2O3 is more than 0% and less than 20%. The lower limit of this content is preferably 4%, more preferably 8%, and further preferably 10%. The upper limit of this content is preferably 17%, more preferably 14%, and further preferably 12%.

[0052] Ga2O3 is a component used as the main component in this embodiment, and is a component that improves the anti-devitrification stability of glass. However, if its content is too high, the melting temperature of glass will rise. In addition, Ga2O3 is still an expensive raw material. From this aspect, the content of Ga2O3 is more than 0% and less than 20%. The lower limit of this content is preferably 4%, more preferably 8%, and further preferably 12%. The upper limit of this content is preferably 18%, more preferably 16%, and further preferably 14%.

[0053] Li2O is a component used as a main component in this embodiment, and is a component that lowers the melting temperature of the glass and improves the solubility. However, if its content is too high, the viscosity of the glass decreases and the stability against devitrification decreases. From this aspect, the content of Li2O is 0% or more and 10% or less. The lower limit of the content is preferably 0.5%, more preferably 1.5%, and further preferably 2.5%. The upper limit of the content is preferably 8%, more preferably 6%, and further preferably 3.5%.

[0054] La2O3 is a component used as the main component in this embodiment, and adding an appropriate amount has the effect of improving the stability against devitrification. However, if its content is too high, the melting temperature of the glass will rise, the solubility will decrease, and the stability against devitrification will also decrease. From this aspect, the content of La2O3 is more than 0% and less than 5%. The lower limit of the content is preferably 0.4%, more preferably 0.8%, and further preferably 1.2%. The upper limit of the content is preferably 4%, more preferably 3%, and further preferably 2%.

[0055] The present invention is not limited to the above-mentioned main components, and other main components can be added within the range that does not hinder the achievement of the glass composition as the purpose (set as the target) of the present embodiment. In addition, except for TeO2, which is an essential component of the present invention, if any of the above-mentioned main components is not used as a main component in the present embodiment, the unused component can be introduced into the glass composition in the present embodiment as an added component.

[0056] The content of the main component having the second highest content after the essential component TeO2 is, in mass%, 10% or more and 35% or less. The lower limit of the content is preferably 15%, more preferably 18%, and further preferably 21%. The upper limit of the content is preferably 30%, more preferably 27%, and further preferably 24%.

[0057] <Glass Composition Containing the Second Additive Group>

[0058] In particular, in the glass composition including the second additive group, TeO2 is a necessary main component in the present embodiment, and is a component that lowers the melting temperature of the glass and improves the stability against devitrification. However, if its content is too high, the stability against devitrification is reduced. From this aspect, the content of TeO2 is 50% or more and 90% or less. The lower limit of the content is preferably 55%, more preferably 60%, and further preferably 65%. The upper limit of the content is preferably 80%, more preferably 75%, and further preferably 70%.

[0059] Bi2O3 is a component used as the main component in the present embodiment, which is to reduce the melting temperature of the glass, and to make it coexist with TeO2 to improve the stability of the glass against devitrification. However, if its content is too high, the content of TeO2 will be relatively reduced, which will deteriorate the stability against devitrification. From this aspect, the content of Bi2O3 is more than 0% and less than 20%. The lower limit of this content is preferably 3%, more preferably 7%, and further preferably 10%. The upper limit of this content is preferably 18%, more preferably 16%, and further preferably 13%.

[0060] B2O3 is a component used as the main component in this embodiment, and is a component that improves the anti-devitrification stability of the glass. However, if its content is too high, the melting temperature will rise. From this aspect, the content of B2O3 is more than 0% and less than 20%. The lower limit of the content is preferably 2%, more preferably 4%, and further preferably 6%. The upper limit of the content is preferably 16%, more preferably 14%, and further preferably 10%.

[0061] GeO2 is a component used as the main component in this embodiment, and is a component that improves the anti-devitrification stability of glass. However, if its content is too high, the melting temperature of glass will rise. In addition, GeO2 is still an expensive raw material. From this aspect, the content of GeO2 is more than 0% and less than 20%. The lower limit of this content is preferably 4%, more preferably 8%, and further preferably 12%. The upper limit of this content is preferably 18%, more preferably 16%, and further preferably 14%.

[0062] Al2O3 is a component used as the main component in this embodiment, and is a component that can improve the devitrification resistance stability of glass when added in an appropriate amount. However, if its content is too high, the melting temperature will rise, and the devitrification resistance stability will decrease. From this aspect, the content of Al2O3 is more than 0% and less than 20%. The lower limit of this content is preferably 4%, more preferably 8%, and further preferably 10%. The upper limit of this content is preferably 17%, more preferably 14%, and further preferably 12%.

[0063] Ga2O3 is a component used as the main component in this embodiment, and is a component that improves the anti-devitrification stability of glass. However, if its content is too high, the melting temperature of glass will rise. In addition, Ga2O3 is still an expensive raw material. From this aspect, the content of Ga2O3 is more than 0% and less than 20%. The lower limit of this content is preferably 4%, more preferably 8%, and further preferably 12%. The upper limit of this content is preferably 18%, more preferably 16%, and further preferably 14%.

[0064] BaO is a component used as the main component in the present embodiment, and is a component that improves the anti-devitrification stability of glass and makes it coexist with TeO2 to improve the anti-devitrification stability of glass. However, if its content is too high, the melting temperature of glass will rise. From such an aspect, the content of BaO is more than 0% and less than 30%. The lower limit of this content is preferably 10%, more preferably 15%, and further preferably 20%. The upper limit of this content is preferably 28%, more preferably 25%, and further preferably 22%.

[0065] ZnO is a component used as the main component in the present embodiment, and is a component that improves the anti-devitrification stability of glass and makes it coexist with TeO2 to improve the anti-devitrification stability of glass. However, if its content is too high, the melting temperature of glass will rise. From such an aspect, the content of ZnO is more than 0% and less than 20%. The lower limit of this content is preferably 2%, more preferably 6%, and further preferably 10%. The upper limit of this content is preferably 18%, more preferably 16%, and further preferably 14%.

[0066] Li2O is a component used as a main component in this embodiment, and is a component that lowers the melting temperature of the glass and improves the solubility. However, if its content is too high, the viscosity of the glass decreases and the stability against devitrification decreases. From this aspect, the content of Li2O is 0% or more and 10% or less. The lower limit of the content is preferably 1%, more preferably 3%, and further preferably 5%. The upper limit of the content is preferably 9%, more preferably 8%, and further preferably 6%.

[0067] WO3 is a component used as the main component in the present embodiment, which is to reduce the melting temperature of the glass, so that it can coexist with TeO2 to improve the stability of the glass against devitrification. However, if its content is too high, the content of TeO2 will be relatively reduced, which will deteriorate the stability against devitrification. From this aspect, the content of WO3 is more than 0% and less than 35%. The lower limit of this content is preferably 15%, more preferably 20%, and more preferably 25%. The upper limit of this content is preferably 33%, more preferably 30%, and more preferably 27%.

[0068] The present invention is not limited to the above-mentioned main components, and other main components can be added within the range that does not hinder the achievement of the glass composition as the purpose (set as the target) of the present embodiment. In addition, except for TeO2, which is an essential component of the present invention, if any of the above-mentioned main components is not used as a main component in the present embodiment, the unused component can be introduced into the glass composition in the present embodiment as an added component.

[0069] The content of the main component having the second highest content after the essential component TeO2 is, in mass%, 10% or more and 35% or less. The lower limit of the content is preferably 15%, more preferably 18%, and further preferably 21%. The upper limit of the content is preferably 30%, more preferably 27%, and further preferably 24%.

[0070] <Glass Composition Containing the Third Additive Group>

[0071] In particular, in the glass composition including the third additive group, TeO2 is a necessary main component in the present embodiment, and is a component that lowers the melting temperature of the glass and improves the stability against devitrification. However, if its content is too high, the stability against devitrification is reduced. From this aspect, the content of TeO2 is 50% or more and 90% or less. The lower limit of the content is preferably 60%, more preferably 65%, and further preferably 70%. The upper limit of the content is preferably 85%, more preferably 80%, and further preferably 75%.

[0072] Bi2O3 is a component used as the main component in the present embodiment, which is to reduce the melting temperature of the glass, and to make it coexist with TeO2 to improve the stability of the glass against devitrification. However, if its content is too high, the content of TeO2 will be relatively reduced, which will deteriorate the stability against devitrification. From this aspect, the content of Bi2O3 is more than 0% and less than 30%. The lower limit of this content is preferably 10%, more preferably 15%, and further preferably 20%. The upper limit of this content is preferably 28%, more preferably 26%, and further preferably 24%.

[0073] B2O3 is a component used as the main component in this embodiment, and is a component that improves the anti-devitrification stability of the glass. However, if its content is too high, the melting temperature will rise. From this aspect, the content of B2O3 is more than 0% and less than 20%. The lower limit of the content is preferably 2%, more preferably 4%, and further preferably 6%. The upper limit of the content is preferably 16%, more preferably 14%, and further preferably 10%.

[0074] Al2O3 is a component used as the main component in this embodiment, and is a component that can improve the devitrification resistance stability of glass when added in an appropriate amount. However, if its content is too high, the melting temperature will rise, and the devitrification resistance stability will decrease. From this aspect, the content of Al2O3 is more than 0% and less than 20%. The lower limit of this content is preferably 4%, more preferably 8%, and further preferably 10%. The upper limit of this content is preferably 17%, more preferably 14%, and further preferably 12%.

[0075] ZnO is a component used as the main component in the present embodiment, and is a component that improves the anti-devitrification stability of glass and makes it coexist with TeO2 to improve the anti-devitrification stability of glass. However, if its content is too high, the melting temperature of glass will rise. From such an aspect, the content of ZnO is more than 0% and less than 20%. The lower limit of this content is preferably 2%, more preferably 6%, and further preferably 10%. The upper limit of this content is preferably 18%, more preferably 16%, and further preferably 14%.

[0076] Li2O is a component used as a main component in this embodiment, and is a component that lowers the melting temperature of the glass and improves the solubility. However, if its content is too high, the viscosity of the glass decreases and the stability against devitrification decreases. From this aspect, the content of Li2O is 0% or more and 10% or less. The lower limit of the content is preferably 0.5%, more preferably 1.5%, and further preferably 2.5%. The upper limit of the content is preferably 8%, more preferably 6%, and further preferably 3.5%.

[0077] La2O3 is a component used as the main component in this embodiment, and adding an appropriate amount has the effect of improving the stability against devitrification. However, if its content is too high, the melting temperature of the glass will rise, the solubility will decrease, and the stability against devitrification will also decrease. From this aspect, the content of La2O3 is more than 0% and less than 5%. The lower limit of the content is preferably 0.4%, more preferably 0.8%, and further preferably 1.2%. The upper limit of the content is preferably 4%, more preferably 3%, and further preferably 2%.

[0078] WO3 is a component used as the main component in the present embodiment, which is to reduce the melting temperature of the glass, so that it can coexist with TeO2 to improve the stability of the glass against devitrification. However, if its content is too high, the content of TeO2 will be relatively reduced, which will deteriorate the stability against devitrification. From this aspect, the content of WO3 is more than 0% and less than 35%. The lower limit of this content is preferably 15%, more preferably 20%, and more preferably 25%. The upper limit of this content is preferably 33%, more preferably 30%, and more preferably 27%.

[0079] The present invention is not limited to the above-mentioned main components, and other main components can be added within the range that does not hinder the achievement of the glass composition as the purpose (set as the target) of the present embodiment. In addition, except for TeO2, which is an essential component of the present invention, if any of the above-mentioned main components is not used as a main component in the present embodiment, the unused component can be introduced into the glass composition in the present embodiment as an added component.

[0080] The content of the main component having the second highest content after the essential component TeO2 is, in mass%, 10% or more and 35% or less. The lower limit of the content is preferably 15%, more preferably 18%, and further preferably 21%. The upper limit of the content is preferably 30%, more preferably 27%, and further preferably 24%.

[0081] <Glass Composition Containing the Fourth Additive Group>

[0082] In particular, in the glass composition including the fourth additive group, TeO2 is a necessary main component in the present embodiment, and is a component that lowers the melting temperature of the glass and improves the stability against devitrification. However, if its content is too high, the stability against devitrification is reduced. From this aspect, the content of TeO2 is 50% or more and 85% or less. The lower limit of the content is preferably 60%, more preferably 65%, and further preferably 70%. The upper limit of the content is preferably 80%, more preferably 77%, and further preferably 74%.

[0083] Bi2O3 is a component used as the main component in the present embodiment, which is to reduce the melting temperature of the glass, and to make it coexist with TeO2 to improve the stability of the glass against devitrification. However, if its content is too high, the content of TeO2 will be relatively reduced, which will deteriorate the stability against devitrification. From this aspect, the content of Bi2O3 is more than 0% and less than 35%. The lower limit of this content is preferably 10%, more preferably 15%, and further preferably 20%. The upper limit of this content is preferably 30%, more preferably 27%, and further preferably 24%.

[0084] B2O3 is a component used as the main component in this embodiment, and is a component that improves the anti-devitrification stability of the glass. However, if its content is too high, the melting temperature will rise. From this aspect, the content of B2O3 is more than 0% and less than 15%. The lower limit of the content is preferably 2%, more preferably 4%, and further preferably 6%. The upper limit of the content is preferably 12%, more preferably 10%, and further preferably 8%.

[0085] GeO2 is a component used as the main component in this embodiment, and is a component that improves the anti-devitrification stability of glass. However, if its content is too high, the melting temperature of glass will rise. In addition, GeO2 is still an expensive raw material. From this aspect, the content of GeO2 is more than 0% and less than 20%. The lower limit of this content is preferably 4%, more preferably 8%, and further preferably 12%. The upper limit of this content is preferably 18%, more preferably 16%, and further preferably 14%.

[0086] Al2O3 is a component used as the main component in this embodiment, and is a component that can improve the devitrification resistance stability of glass when added in an appropriate amount. However, if its content is too high, the melting temperature will rise, and the devitrification resistance stability will decrease. From this aspect, the content of Al2O3 is more than 0% and less than 10%. The lower limit of this content is preferably 0.3%, more preferably 0.7%, and further preferably 1%. The upper limit of this content is preferably 7%, more preferably 5%, and further preferably 2%.

[0087] Ga2O3 is a component used as the main component in this embodiment, and is a component that improves the anti-devitrification stability of glass. However, if its content is too high, the melting temperature of glass will rise. In addition, Ga2O3 is still an expensive raw material. From this aspect, the content of Ga2O3 is more than 0% and less than 20%. The lower limit of this content is preferably 4%, more preferably 8%, and further preferably 12%. The upper limit of this content is preferably 18%, more preferably 16%, and further preferably 14%.

[0088] WO3 is a component used as the main component in the present embodiment, which is a component that reduces the melting temperature of the glass and makes it coexist with TeO2 to improve the stability of the glass against devitrification. However, if its content is too high, the content of TeO2 will be relatively reduced, which will deteriorate the stability against devitrification. From this aspect, the content of WO3 is more than 0% and less than 35%. The lower limit of this content is preferably 15%, more preferably 20%, and further preferably 25%. The upper limit of this content is preferably 33%, more preferably 30%, and further preferably 27%.

[0089] Li2O is a component used as a main component in this embodiment, and is a component that lowers the melting temperature of the glass and improves the solubility. However, if its content is too high, the viscosity of the glass decreases and the stability against devitrification decreases. From this aspect, the content of Li2O is 0% or more and 10% or less. The lower limit of the content is preferably 0.5%, more preferably 1.5%, and further preferably 2.5%. The upper limit of the content is preferably 8%, more preferably 6%, and further preferably 3.5%.

[0090] La2O3 is a component used as the main component in this embodiment, and adding an appropriate amount has the effect of improving the stability against devitrification. However, if its content is too high, the melting temperature of the glass will rise, the solubility will decrease, and the stability against devitrification will also decrease. From this aspect, the content of La2O3 is more than 0% and less than 5%. The lower limit of the content is preferably 0.4%, more preferably 0.8%, and further preferably 1.2%. The upper limit of the content is preferably 4%, more preferably 3%, and further preferably 2%.

[0091] BaO is a component used as the main component in the present embodiment, and is a component that improves the anti-devitrification stability of glass and makes it coexist with TeO2 to improve the anti-devitrification stability of glass. However, if its content is too high, the melting temperature of glass will rise. From such an aspect, the content of BaO is more than 0% and less than 30%. The lower limit of this content is preferably 10%, more preferably 15%, and further preferably 20%. The upper limit of this content is preferably 28%, more preferably 25%, and further preferably 22%.

[0092] ZnO is a component used as the main component in the present embodiment, and is a component that improves the anti-devitrification stability of glass and makes it coexist with TeO2 to improve the anti-devitrification stability of glass. However, if its content is too high, the melting temperature of glass will rise. From such an aspect, the content of ZnO is more than 0% and less than 20%. The lower limit of this content is preferably 2%, more preferably 6%, and further preferably 10%. The upper limit of this content is preferably 18%, more preferably 16%, and further preferably 14%.

[0093] The present invention is not limited to the above-mentioned main components, and other main components can be added within the range that does not hinder the achievement of the glass composition as the purpose (set as the target) of the present embodiment. In addition, except for TeO2, which is an essential component of the present invention, if any of the above-mentioned main components is not used as a main component in the present embodiment, the unused component can be introduced into the glass composition in the present embodiment as an added component.

[0094] The content of the main component having the second highest content after the essential component TeO2 is, in mass%, 10% or more and 35% or less. The lower limit of the content is preferably 15%, more preferably 18%, and further preferably 21%. The upper limit of the content is preferably 30%, more preferably 27%, and further preferably 24%.

[0095] <Glass Composition Containing the Fifth Additive Group>

[0096] In particular, in the glass composition including the fifth additive group, TeO2 is a necessary main component in the present embodiment, and is a component that lowers the melting temperature of the glass and improves the stability against devitrification. However, if its content is too high, the stability against devitrification is reduced. From this aspect, the content of TeO2 is 50% or more and 90% or less. The lower limit of the content is preferably 60%, more preferably 65%, and further preferably 70%. The upper limit of the content is preferably 85%, more preferably 80%, and further preferably 75%.

[0097] Bi2O3 is a component used as the main component in the present embodiment, which is to reduce the melting temperature of the glass, and to make it coexist with TeO2 to improve the stability of the glass against devitrification. However, if its content is too high, the content of TeO2 will be relatively reduced, which will deteriorate the stability against devitrification. From this aspect, the content of Bi2O3 is more than 0% and less than 30%. The lower limit of this content is preferably 10%, more preferably 15%, and further preferably 20%. The upper limit of this content is preferably 28%, more preferably 26%, and further preferably 24%.

[0098] B2O3 is a component used as the main component in this embodiment, and is a component that improves the anti-devitrification stability of the glass. However, if its content is too high, the melting temperature will rise. From this aspect, the content of B2O3 is more than 0% and less than 15%. The lower limit of the content is preferably 2%, more preferably 4%, and further preferably 6%. The upper limit of the content is preferably 12%, more preferably 10%, and further preferably 8%.

[0099] GeO2 is a component used as the main component in this embodiment, and is a component that improves the anti-devitrification stability of glass. However, if its content is too high, the melting temperature of glass will rise. In addition, GeO2 is still an expensive raw material. From this aspect, the content of GeO2 is more than 0% and less than 20%. The lower limit of this content is preferably 4%, more preferably 8%, and further preferably 12%. The upper limit of this content is preferably 18%, more preferably 16%, and further preferably 14%.

[0100] Al2O3 is a component used as the main component in this embodiment, and is a component that can improve the devitrification resistance stability of glass when added in an appropriate amount. However, if its content is too high, the melting temperature will rise, and the devitrification resistance stability will decrease. From this aspect, the content of Al2O3 is more than 0% and less than 20%. The lower limit of this content is preferably 4%, more preferably 8%, and further preferably 10%. The upper limit of this content is preferably 17%, more preferably 14%, and further preferably 12%.

[0101] Ga2O3 is a component used as the main component in this embodiment, and is a component that improves the anti-devitrification stability of glass. However, if its content is too high, the melting temperature of glass will rise. In addition, Ga2O3 is still an expensive raw material. From this aspect, the content of Ga2O3 is more than 0% and less than 20%. The lower limit of this content is preferably 4%, more preferably 8%, and further preferably 12%. The upper limit of this content is preferably 18%, more preferably 16%, and further preferably 14%.

[0102] Li2O is a component used as a main component in this embodiment, and is a component that lowers the melting temperature of the glass and improves the solubility. However, if its content is too high, the viscosity of the glass decreases and the stability against devitrification decreases. From this aspect, the content of Li2O is 0% or more and 10% or less. The lower limit of the content is preferably 0.5%, more preferably 1.5%, and further preferably 2.5%. The upper limit of the content is preferably 8%, more preferably 6%, and further preferably 3.5%.

[0103] La2O3 is a component used as the main component in this embodiment, and adding an appropriate amount has the effect of improving the stability against devitrification. However, if its content is too high, the melting temperature of the glass will rise, the solubility will decrease, and the stability against devitrification will also decrease. From this aspect, the content of La2O3 is more than 0% and less than 5%. The lower limit of the content is preferably 0.4%, more preferably 0.8%, and further preferably 1.2%. The upper limit of the content is preferably 4%, more preferably 3%, and further preferably 2%.

[0104] BaO is a component used as the main component in the present embodiment, and is a component that improves the anti-devitrification stability of glass and makes it coexist with TeO2 to improve the anti-devitrification stability of glass. However, if its content is too high, the melting temperature of glass will rise. From such an aspect, the content of BaO is more than 0% and less than 30%. The lower limit of this content is preferably 10%, more preferably 15%, and further preferably 20%. The upper limit of this content is preferably 28%, more preferably 25%, and further preferably 22%.

[0105] ZnO is a component used as the main component in the present embodiment, and is a component that improves the anti-devitrification stability of glass and makes it coexist with TeO2 to improve the anti-devitrification stability of glass. However, if its content is too high, the melting temperature of glass will rise. From such an aspect, the content of ZnO is more than 0% and less than 20%. The lower limit of this content is preferably 2%, more preferably 6%, and further preferably 10%. The upper limit of this content is preferably 18%, more preferably 16%, and further preferably 14%.

[0106] WO3 is a component used as the main component in the present embodiment, which is to reduce the melting temperature of the glass, so that it can coexist with TeO2 to improve the stability of the glass against devitrification. However, if its content is too high, the content of TeO2 will be relatively reduced, which will deteriorate the stability against devitrification. From this aspect, the content of WO3 is more than 0% and less than 35%. The lower limit of this content is preferably 15%, more preferably 20%, and more preferably 25%. The upper limit of this content is preferably 33%, more preferably 30%, and more preferably 27%.

[0107] The present invention is not limited to the above-mentioned main components, and other main components can be added within the range that does not hinder the achievement of the glass composition as the purpose (set as the target) of the present embodiment. In addition, except for TeO2, which is an essential component of the present invention, if any of the above-mentioned main components is not used as a main component in the present embodiment, the unused component can be introduced into the glass composition in the present embodiment as an added component.

[0108] The content of the main component having the second highest content after the essential component TeO2 is, in mass%, 10% or more and 35% or less. The lower limit of the content is preferably 15%, more preferably 18%, and further preferably 21%. The upper limit of the content is preferably 30%, more preferably 27%, and further preferably 24%.

[0109] <Standard sample glass>

[0110] The standard sample glass of the present embodiment is a standard sample for elemental analysis containing the above-mentioned glass composition, and is a standard sample glass containing: a first glass composition, Ti, V, Cr, Mn, Fe, Co, Ni, Cu, Zn, Zr, Nb, Mo, Hf, Ta, W, Sc, Y, La, Ce, Pr, Nd, Sm, Eu, Gd, Tb, Dy, Ho, Er, Tm, Yb, Lu, Rb, Cs, Ba, Ga, Ge, In, Sn, Sb, P as added components At least one of b, Bi, Au, Pt, Ag, Ir, Pd, Rh, Ru, Re, F, Cl, Br, I and S is introduced therein in an amount (first content) of each additive component being greater than 0 mg / kg and less than 1500 mg / kg; and a second glass composition, at least one of the additive components is introduced therein in an amount (second content) of each additive component being greater than 0 mg / kg and less than 1500 mg / kg, the second content being greater than the first content.

[0111] The first glass composition contains an additive component (first additive component) at 0 mg / kg to 1500 mg / kg (first content). The lower limit of the first content is preferably 0 mg / kg. In addition, from the perspective of the quantitative lower limit of the analytical method and impurities from the raw materials, 1 mg / kg or less is considered to be substantially 0 mg / kg. The upper limit of the first content is preferably 15 mg / kg, more preferably 10 mg / kg, and even more preferably 5 mg / kg.

[0112] The second glass composition contains an additive component (second additive component) in an amount of more than 0 mg / kg and less than 1500 mg / kg (second content). The lower limit of the second content is preferably 15 mg / kg, more preferably 30 mg / kg, and even more preferably 40 mg / kg. The upper limit of the second content is preferably 500 mg / kg, more preferably 100 mg / kg, and even more preferably 60 mg / kg.

[0113] Preferably, the second content of the additive component contained in the second glass composition is greater than the first content of the additive component contained in the first glass composition. In addition, in order to achieve the function as a standard sample glass, it is preferred that the first additive component and the second additive component are the same. Furthermore, the types of components that become main components in the first glass composition and the second glass composition may be the same, and the composition of the main components (ratio of the main components) may also be the same. It should be noted that, in the second glass composition, when the composition of the main components is the same as that of the first glass composition, the change in the composition of the main components due to the increase in the content of the additive component is regarded as substantially the same.

[0114] Preferably, the standard sample glass includes a third glass composition in addition to the first glass composition and the second glass composition.

[0115] The third glass composition contains an additive component (third additive component) in an amount exceeding 0 mg / kg and not more than 1500 mg / kg (third content). The lower limit of the third content is preferably 500 mg / kg, more preferably 750 mg / kg, and even more preferably 950 mg / kg. The upper limit of the third content is preferably 1400 mg / kg, more preferably 1250 mg / kg, and even more preferably 1050 mg / kg.

[0116] Preferably, the third content of the additive contained in the third glass composition is greater than the first content of the additive contained in the first glass composition and the second content of the additive contained in the second glass composition. In addition, in order to achieve the function as a standard sample glass, it is preferred that the first additive, the second additive and the third additive are the same. Furthermore, the types of components that become the main components in the first glass composition, the second glass composition and the third glass composition may be the same, and the composition of the main components (ratio of the main components) may also be the same. It should be noted that, in the second glass composition and the third glass composition, when the composition of the main components is the same as that of the first glass composition, the change in the composition of the main components due to the increase in the content of the additive is regarded as substantially the same.

[0117] The above components are not limited thereto, and any other components may be added within the range that does not hinder the achievement of the first glass composition, the second glass composition, and the third glass composition as the purpose (set as the target) of the present embodiment. In addition, the above-mentioned standard sample glass has three glass compositions with different contents of the added components. It should be noted that the standard sample glass of the present embodiment only needs to have at least two or more glasses with different contents.

[0118] <Method for producing glass composition>

[0119] Hereinafter, methods for producing the glass composition of the present embodiment and the first glass composition, the second glass composition, and the third glass composition included in the standard sample glass of the present embodiment will be described.

[0120] The method for producing the first glass composition, the second glass composition, and the third glass composition included in the glass composition of the present embodiment and the standard sample glass of the present embodiment includes:

[0121] (i) a step of cleaning the crucible and the utensils involved in the melting by immersing them in an acidic solution for 1 to 24 hours;

[0122] (ii) a step of rinsing the crucible and the utensils involved in melting with pure water;

[0123] (iii) a step of drying the crucible and the vessel involved in the melting;

[0124] (iv) a step of obtaining a mixture, in which the main component and any one of the additive components from the first to fifth additive component groups are mixed in the crucible, and the mixture is melted at a temperature of 700° C. to 900° C. for 30 minutes to 8 hours while being stirred with the apparatus, thereby obtaining the mixture; and

[0125] (v) A step of casting the mixture into a mold and slowly cooling it.

[0126] The types, addition rates and addition amounts of the main components and additive components are in accordance with the description of the above-mentioned glass composition and standard sample glass.

[0127] Steps (i) to (iii)

[0128] In order to prevent the inclusion of impurities, it is preferred that the crucible, the lid, the stirring blade and other utensils accompanying the melting are immersed in an acidic solution for about 1 hour to 24 hours, more preferably for about 5 hours to 16 hours. The acidic solution preferably includes at least one acidic solution of hydrofluoric acid, hydrochloric acid, nitric acid and sulfuric acid, and more preferably a hydrofluoric acid solution with a concentration of 30% to 50%. The immersed crucible, the lid, the stirring blade and other utensils accompanying the melting are cleaned, rinsed with pure water, and then dried.

[0129] The crucible, the lid, the stirring blade and other utensils accompanying the melting contain at least one metal selected from the group consisting of platinum, gold, iridium and quartz, from the viewpoint of low reactivity with the glass melt to suppress corrosion of the crucible by the melt and high resistance to acid. It should be noted that when the additive component is a precious metal, it is preferred to use utensils made of a material different from that of the additive component.

[0130] Process (ⅳ)

[0131] The main components of the oxides are weighed so as to achieve the above-mentioned component composition (mass %) of the glass composition of the present embodiment.

[0132] After weighing the main components, mix them and put them into a crucible, add a certain amount of the element to be added according to the purpose. The element to be added can be introduced by directly adding raw materials such as oxides, hydroxides, carbonates, nitrates, etc., or by dropping a certain amount of nitrate aqueous solution containing the element to be added. When dropping a certain amount, it is not limited to the nitrate aqueous solution, as long as it is a solution in which the element to be added is stably dissolved.

[0133] As the additive components, one to sixteen elements may be appropriately selected in one glass and added to the glass composition.

[0134] The crucible is covered with a lid, and the melt is carried out at a temperature of 700° C. to 900° C., preferably 750° C. to 850° C., for 30 minutes to 8 hours, preferably 1 hour to 5 hours, while being stirred for homogenization.

[0135] Process (v)

[0136] After the temperature was lowered to an appropriate level, the mixture was cast into a mold or the like and slowly cooled to obtain each glass sample. As a judgment of vitrification, the absence of crystallization was visually confirmed.

[0137] <Characteristics of Glass Composition>

[0138] Hereinafter, the preferred properties of the first glass composition, the second glass composition, and the third glass composition included in the glass composition of the present embodiment and the standard sample glass of the present embodiment will be described. The first glass composition, the second glass composition, and the third glass composition have different contents of additive components.

[0139] The melting temperatures of the first glass composition, the second glass composition, and the third glass composition included in the glass composition of the present embodiment and the standard sample glass of the present embodiment are 900° C. or less from the perspective of preventing the concentration level of the added element from changing due to volatilization of the added element in the melt. The upper limit of the melting temperature is preferably 850° C., more preferably 800° C.

[0140] The glass composition of the present embodiment and the first glass composition, the second glass composition, and the third glass composition included in the standard sample glass of the present embodiment have stability against devitrification and contain a trace amount of desired elements while suppressing the inclusion of undesired elements.

[0141] The glass composition of the present embodiment having the above-mentioned characteristics and the first glass composition, the second glass composition, and the third glass composition included in the standard sample glass of the present embodiment can be used as solid standard samples for elemental analysis, for example. By using such glass compositions with different concentrations of additive components, a calibration curve can be prepared as a standard sample for inductively coupled plasma (ICP) mass analysis, secondary ion mass analysis (SIMS), fluorescent X-ray analysis (XRF), etc.

[0142] Example

[0143] Next, examples of the present invention will be described, but the present invention is not limited to these examples.

[0144] <Production of Glass Composition>

[0145] The glass composition of each example was prepared according to the following procedure.

[0146] First, glass raw materials such as oxides and carbonates as main components were weighed so as to have the chemical compositions (mass %) described in Tables 1 to 5, and the total weight was 100 g.

[0147] The introduction of the additives is carried out by directly injecting the raw materials containing the additives.

[0148] The first group of additional components is introduced into the composition in the form of oxides, carbonates, and the like.

[0149] The second group of additive components is introduced into the composition in the form of oxides or the like.

[0150] The third group of additional components is introduced into the composition in the form of oxides, carbonates, and the like.

[0151] The fourth additive component group is introduced into the glass composition in the form of oxides, chlorides, etc.

[0152] The fifth additive component group is introduced into the glass composition in the form of fluoride, chloride, bromide, iodide, sulfate, etc.

[0153] Next, the weighed glass raw materials were mixed, put into a platinum crucible (in the case where the additives included the fourth additive group, put into a quartz crucible), melted at a temperature of 750°C to 850°C for about 1 hour, and stirred uniformly. After that, after lowering to an appropriate temperature, cast into a mold, etc., and slowly cooled, each glass sample was obtained. As a judgment of vitrification, it was visually confirmed that no crystallization occurred.

[0154] In order to prevent the mixing of impurities, a platinum crucible or a quartz crucible that has been cleaned in advance with hydrochloric acid or pure water is used.

[0155] <Quantitative Analysis of Glass Compositions of the First, Second, Third, and Fourth Additive Component Groups>

[0156] For each prepared glass specimen, first, the surface of the glass specimen is cleaned with dilute acid and then crushed. The crushed glass specimen is dissolved in an acidic solution, and then the volume is made up to a fixed volume with pure water. The resulting solution is used as the test solution.

[0157] <Quantitative Analysis of Glass Compositions of the Fifth Additive Component Group>

[0158] The glass specimen is crushed and used as the specimen for combustion ion chromatography testing.

[0159] For the first, second, third, and fourth additive component groups, the above-mentioned test solution is used to perform quantitative analysis of the additive components using an ICP emission spectrometer (Hitachi High-Technologies PS3500DDⅡ) or an ICP mass spectrometer (Agilent 7700x). At this time, a calibration curve in an appropriate concentration range is made using a liquid standard specimen with a known concentration of the target element to be added, and the amount of the target element to be added in the glass to be analyzed is determined.

[0160] For the fifth additive component group, for the above-mentioned powder specimen, a quantitative analysis of the additive components is performed on the gas components generated by a combustion furnace (Yanaco YHS11) using an ion chromatograph (Metrohm, 940 professional IC Vario). At this time, a calibration curve in an appropriate concentration range is made using a standard specimen with a known concentration of the target ion to be added, and the amount of the target ion to be added in the glass to be analyzed is determined.

[0161] In Table 1, for the first additive component group (Examples 1 to 9), the component composition (mass basis), ICP measurement values, or combustion ion chromatography quantitative values of each example are shown. In Table 2, for the second additive component group (Examples 10 to 16), the component composition (mass basis), ICP measurement values, or combustion ion chromatography quantitative values of each example are shown. In Table 3, for the third additive component group (Examples 17 to 21), the component composition (mass basis), ICP measurement values, or combustion ion chromatography quantitative values of each example are shown. In Table 4, for the fourth additive component group (Examples 22 to 28), the component composition (mass basis), ICP measurement values, or combustion ion chromatography quantitative values of each example are shown. In Table 5, for the fifth additive component group (Examples 29 to 33), the component composition (mass basis), ICP measurement values, or combustion ion chromatography quantitative values of each example are shown.

[0162] [Table 1]

[0163]

[0164] [Table 2]

[0165]

[0166] [Table 3]

[0167]

[0168] [Table 4]

[0169]

[0170] [Table 5]

[0171]

[0172] From the above, it was confirmed that the glass composition of each example was vitrified.

[0173] In addition, based on the quantitative values ​​such as ICP of the glass composition of each example, it was confirmed that the target addition element was introduced into the glass composition in the target amount.

Claims

1. A glass composition, wherein: Contains the main ingredients; and The following additive components are introduced in an amount of more than 0 mg / kg and less than 1500 mg / kg for each additive component: at least any one of Ti, V, Cr, Mn, Fe, Co, Ni, Cu, Zn, Zr, Nb, Mo, Hf, Ta, W, Sc, Y, La, Ce, Pr, Nd, Sm, Eu, Gd, Tb, Dy, Ho, Er, Tm, Yb, Lu, Rb, Cs, Ba, Ga, Ge, In, Sn, Sb, Pb, Bi, Au, Pt, Ag, Ir, Pd, Rh, Ru, Re, F, Cl, Br, I and S.

2. The glass composition according to claim 1, wherein The main components are, in mass %, TeO2 content: 50~90%.

3. The glass composition according to claim 1 or 2, wherein: The main components are, in mass %, Bi2O3 content: 0% to 35%, B2O3 content: 0% to 20%, GeO2 content: 0% to 20%, Al2O3 content: 0% to 20%, Ga2O3 content: 0% to 20%, BaO content: 0% to 30%, ZnO content: 0% to 20%, Li2O content: 0% to 10%, La2O3 content: 0% to 5%, and WO3 content: 0% to 35%, The main components are components other than the added components.

4. The glass composition according to any one of claims 1 to 3, wherein The main components include at least two components, and the two components are TeO 2 and components other than the additional components.

5. The glass composition according to claim 4, wherein: The main components include three components, which are TeO 2 and components other than the added components.

6. The glass composition according to any one of claims 1 to 5, wherein In terms of mass %, The content of the main component having the second largest proportion among the main components is 10% to 35%.

7. A glass composition, wherein: In terms of mass %, TeO2 content: 50% to 90%; and Contains at least two selected from the group consisting of Bi2O3, B2O3, GeO2, Al2O3, Ga2O3, Li2O, La2O3, BaO, ZnO and WO3.

8. The glass composition according to claim 7, wherein: In terms of mass %, Bi2O3 content: 0% to 35%, B2O3 content: 0% to 20%, GeO2 content: 0% to 20%, Al2O3 content: 0% to 20%, Ga2O3 content: 0% to 20%, Li2O content: 0% to 10%, La2O3 content: 0% to 5%, BaO content: 0% to 30%, ZnO content: 0% to 20%, WO3 content: 0%~35%.

9. The glass composition according to claim 7 or 8, wherein: The glass composition includes at least one of Ti, V, Cr, Mn, Fe, Co, Ni, Cu, Zn, Zr, Nb, Mo, Hf, Ta, W, Sc, Y, La, Ce, Pr, Nd, Sm, Eu, Gd, Tb, Dy, Ho, Er, Tm, Yb, Lu, Rb, Cs, Ba, Ga, Ge, In, Sn, Sb, Pb, Bi, Au, Pt, Ag, Ir, Pd, Rh, Ru, Re, F, Cl, Br, I and S as additive components, with each additive component being more than 0 mg / kg and less than 1500 mg / kg.

10. A glass composition, wherein: The main components are, in mass %, TeO2 content: 55% to 90%, Bi2O3 content: 0% to 35%, B2O3 content: 0% to 20%, GeO2 content: 0% to 20%, Al2O3 content: 0% to 20%, Ga2O3 content: 0% to 20%, Li2O content: 0% to 10%, and La2O3 content: 0% to 5%, As an additive component, at least any one of Ti, V, Cr, Mn, Fe, Co, Ni, Cu, Zn, Zr, Nb, Mo, Hf, Ta and W is introduced in an amount of each of the additive components exceeding 0 mg / kg and not more than 1500 mg / kg.

11. A glass composition, wherein: The main components are, in mass %, TeO2 content: 50% to 90%, Bi2O3 content: 0% to 20%, B2O3 content: 0% to 20%, GeO2 content: 0% to 20%, Al2O3 content: 0% to 20%, Ga2O3 content: 0% to 20%, BaO content: 0% to 30%, ZnO content: 0% to 20%, Li2O content: 0% to 10%, and WO3 content: 0% to 35%, As an additive component, at least any one of Sc, Y, La, Ce, Pr, Nd, Sm, Eu, Gd, Tb, Dy, Ho, Er, Tm, Yb and Lu is introduced in an amount of each of the additive components exceeding 0 mg / kg and below 1500 mg / kg.

12. A glass composition, wherein: The main components are, in mass %, TeO2 content: 50% to 90%, Bi2O3 content: 0% to 30%, B2O3 content: 0% to 20%, Al2O3 content: 0% to 20%, ZnO content: 0% to 20%, Li2O content: 0% to 10%, La2O3 content: 0% to 5%, and WO3 content: 0% to 35%, As an additive component, at least any one of Rb, Cs, Ba, Ga, Ge, In, Sn, Sb, Pb and Bi is introduced in an amount of each of the additive components exceeding 0 mg / kg and not more than 1500 mg / kg.

13. A glass composition, wherein: The main components are, in mass %, TeO2 content: 50% to 85%, Bi2O3 content: 0% to 35%, B2O3 content: 0% to 15%, GeO2 content: 0% to 20%, Al2O3 content: 0% to 10%, Ga2O3 content: 0% to 20%, BaO content: 0% to 30%, ZnO content: 0% to 20%, Li2O content: 0% to 10%, La2O3 content: 0% to 5%, and WO3 content: 0% to 35%, As an additive component, at least any one of Au, Pt, Ag, Ir, Pd, Rh, Ru and Re is introduced in an amount of more than 0 mg / kg and 1500 mg / kg or less for each of the additive components.

14. A glass composition, wherein: The main components are, in mass %, TeO2 content: 50% to 90%, Bi2O3 content: 0% to 30%, B2O3 content: 0% to 15%, GeO2 content: 0% to 20%, Al2O3 content: 0% to 20%, Ga2O3 content: 0% to 20%, BaO content: 0% to 30%, ZnO content: 0% to 20%, Li2O content: 0% to 10%, La2O3 content: 0% to 5%, and WO3 content: 0% to 35%, As the additive component, at least any one of F, Cl, Br, I and S is introduced in an amount of each of the additive components exceeding 0 mg / kg and not more than 1500 mg / kg.

15. The glass composition according to any one of claims 1 to 14, wherein The glass composition is a standard sample for elemental analysis.

16. The glass composition according to claim 15, wherein: The glass composition is a standard sample for inductively coupled plasma (ICP) mass analysis, secondary ion mass analysis (SIMS) and / or X-ray fluorescence analysis (XRF).

17. A standard sample glass, which is a standard sample for element analysis, comprising: a first glass composition, wherein at least one of Ti, V, Cr, Mn, Fe, Co, Ni, Cu, Zn, Zr, Nb, Mo, Hf, Ta, W, Sc, Y, La, Ce, Pr, Nd, Sm, Eu, Gd, Tb, Dy, Ho, Er, Tm, Yb, Lu, Rb, Cs, Ba, Ga, Ge, In, Sn, Sb, Pb, Bi, Au, Pt, Ag, Ir, Pd, Rh, Ru, Re, F, Cl, Br, I and S is introduced as a first additive component in a first amount; and A second glass composition in which at least any one of the additional components is introduced as a second additional component in a second content, wherein the second content is greater than the first content.

18. The standard sample glass according to claim 17, wherein: The first content is 0 mg / kg or more and 1500 mg / kg or less of each added component. The second content is more than 0 mg / kg and less than 1500 mg / kg for each of the added components.

19. The standard sample glass according to claim 17 or 18, wherein: The second additional component is the same as the first additional component.

20. The standard sample glass according to any one of claims 17 to 19, wherein having a third glass composition into which at least any one of the additive components as a third additive component is introduced in a third content, The third content is greater than the first content and the second content.

21. The standard sample glass according to claim 20, wherein: The first content is 0 mg / kg.

22. The standard sample glass according to claim 20 or 21, wherein: The third content is more than 0 mg / kg and less than 1500 mg / kg for each of the added components.

23. The standard sample glass according to any one of claims 20 to 22, wherein: The third additional component is the same as the first additional component and the second additional component.

24. The standard sample glass according to any one of claims 20 to 23, wherein The first glass composition and the second glass composition include, as main components of each glass composition, in terms of mass %, TeO2: 50~70%.

25. The standard sample glass according to claim 24, wherein: The main components are, in mass %, Bi2O3 content: 0% to 35%, B2O3 content: 0% to 20%, GeO2 content: 0% to 20%, Al2O3 content: 0% to 20%, Ga2O3 content: 0% to 20%, BaO content: 0% to 30%, ZnO content: 0% to 20%, Li2O content: 0% to 10%, La2O3 content: 0% to 5%, and WO3 content: 0% to 35%, The main components are components other than the added components.

26. The standard sample glass according to claim 24 or 25, wherein: The first glass composition and the second glass composition each contain at least two components, and the two components are TeO 2 among the main components and components other than the additional components.

27. The standard sample glass according to claim 26, wherein: The first glass composition and the second glass composition each contain three components, and the three components are TeO 2 among the main components and components other than the additional components.

28. The standard sample glass according to any one of claims 24 to 27, wherein Among the main components contained in the first glass composition, the content of the component having the second largest proportion, in terms of mass %, is 10% to 35%.

29. The standard sample glass according to any one of claims 24 to 28, wherein Among the main components contained in the second glass composition, the content of the component having the second largest proportion, in terms of mass %, is 10% to 35%.

30. The standard sample glass according to any one of claims 24 to 29, wherein The main components contained in the second glass composition are of the same type as the main components contained in the first glass composition.

31. The standard sample glass according to any one of claims 30, wherein: The main components contained in the second glass composition are the same in type and ratio as the main components contained in the first glass composition.

32. The standard sample glass according to any one of claims 21 to 31, wherein The third glass composition comprises, as main components, in mass %, TeO2: 50%~70%.

33. The standard sample glass according to claim 32, wherein: The main components are, in mass %, Bi2O3 content: 0% to 35%, B2O3 content: 0% to 20%, GeO2 content: 0% to 20%, Al2O3 content: 0% to 20%, Ga2O3 content: 0% to 20%, BaO content: 0% to 30%, ZnO content: 0% to 20%, Li2O content: 0% to 10%, La2O3 content: 0% to 5%, and WO3 content: 0% to 35%, The main components are components other than the added components.

34. The standard sample glass according to any one of claims 20 to 33, wherein The main components contained in the third glass composition are the same as the main components contained in the first glass composition and the second glass composition.

35. The standard sample glass according to claim 34, wherein: The main components contained in the third glass composition are the same in type and ratio as the main components contained in the first glass composition and the second glass composition.

36. The standard sample glass according to any one of claims 17 to 35, wherein The standard sample glass is a standard sample for inductively coupled plasma (ICP) mass analysis, secondary ion mass analysis (SIMS) and / or X-ray fluorescence analysis (XRF).

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