JPWO2020196171A1 - Li2O−Al2O3−SiO2系結晶化ガラス - Google Patents
Li2O−Al2O3−SiO2系結晶化ガラス Download PDFInfo
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- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03C—CHEMICAL COMPOSITION OF GLASSES, GLAZES OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS
- C03C10/00—Devitrified glass ceramics, i.e. glass ceramics having a crystalline phase dispersed in a glassy phase and constituting at least 50% by weight of the total composition
- C03C10/0018—Devitrified glass ceramics, i.e. glass ceramics having a crystalline phase dispersed in a glassy phase and constituting at least 50% by weight of the total composition containing SiO2, Al2O3 and monovalent metal oxide as main constituents
- C03C10/0027—Devitrified glass ceramics, i.e. glass ceramics having a crystalline phase dispersed in a glassy phase and constituting at least 50% by weight of the total composition containing SiO2, Al2O3 and monovalent metal oxide as main constituents containing SiO2, Al2O3, Li2O as main constituents
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- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03C—CHEMICAL COMPOSITION OF GLASSES, GLAZES OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS
- C03C10/00—Devitrified glass ceramics, i.e. glass ceramics having a crystalline phase dispersed in a glassy phase and constituting at least 50% by weight of the total composition
- C03C10/0054—Devitrified glass ceramics, i.e. glass ceramics having a crystalline phase dispersed in a glassy phase and constituting at least 50% by weight of the total composition containing PbO, SnO2, B2O3
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- C03C3/00—Glass compositions
- C03C3/04—Glass compositions containing silica
- C03C3/076—Glass compositions containing silica with 40% to 90% silica, by weight
- C03C3/097—Glass compositions containing silica with 40% to 90% silica, by weight containing phosphorus, niobium or tantalum
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- C03—GLASS; MINERAL OR SLAG WOOL
- C03C—CHEMICAL COMPOSITION OF GLASSES, GLAZES OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS
- C03C4/00—Compositions for glass with special properties
- C03C4/08—Compositions for glass with special properties for glass selectively absorbing radiation of specified wave lengths
- C03C4/085—Compositions for glass with special properties for glass selectively absorbing radiation of specified wave lengths for ultraviolet absorbing glass
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- C03—GLASS; MINERAL OR SLAG WOOL
- C03C—CHEMICAL COMPOSITION OF GLASSES, GLAZES OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS
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Abstract
Description
Claims (24)
- 質量%で、SiO2 40〜90%、Al2O3 5〜30%、Li2O 1〜10%、SnO2 0〜20%、ZrO2 1〜20%、MgO 0〜10%、P2O5 0〜10%、TiO2 0〜2%未満を含有することを特徴とするLi2O−Al2O3−SiO2系結晶化ガラス。
- さらに、質量%で、Na2O 0〜10%、K2O 0〜10%、CaO 0〜10%、SrO 0〜10%、BaO 0〜10%、ZnO 0〜10%、B2O3 0〜10%を含有することを特徴とする請求項1に記載のLi2O−Al2O3−SiO2系結晶化ガラス。
- さらに、質量%で、Fe2O3 0.1%以下を含有することを特徴とする請求項1又は2に記載のLi2O−Al2O3−SiO2系結晶化ガラス。
- 質量比で、SnO2/(SnO2+ZrO2+P2O5+TiO2+B2O3)が0.06以上であることを特徴とする請求項1〜3のいずれかに記載のLi2O−Al2O3−SiO2系結晶化ガラス。
- 質量比で、Al2O3/(SnO2+ZrO2)が7.1以下であることを特徴とする請求項1〜4のいずれかに記載のLi2O−Al2O3−SiO2系結晶化ガラス。
- 質量比で、SnO2/(SnO2+ZrO2)が0.01〜0.99であることを特徴とする請求項1〜5のいずれかに記載のLi2O−Al2O3−SiO2系結晶化ガラス。
- 質量%で、Na2O+K2O+CaO+SrO+BaO 8%以下を含有することを特徴とする請求項1〜6のいずれかに記載のLi2O−Al2O3−SiO2系結晶化ガラス。
- 質量比で、(SiO2+Al2O3)/Li2Oが20以上であることを特徴とする請求項1〜7のいずれかに記載のLi2O−Al2O3−SiO2系結晶化ガラス。
- 質量比で、(SiO2+Al2O3)/SnO2が44以上であることを特徴とする請求項1〜8のいずれかに記載のLi2O−Al2O3−SiO2系結晶化ガラス。
- 質量比で、(MgO+ZnO)/Li2Oが0.395未満、又は0.754超であることを特徴とする請求項1〜9のいずれかに記載のLi2O−Al2O3−SiO2系結晶化ガラス。
- 質量比で、(Li2O+Na2O+K2O)/ZrO2が2.0以下であることを特徴とする請求項1〜10のいずれかに記載のLi2O−Al2O3−SiO2系結晶化ガラス。
- 質量比で、TiO2/ZrO2が0.0001〜5.0であることを特徴とする請求項1〜11のいずれかに記載のLi2O−Al2O3−SiO2系結晶化ガラス。
- 質量比で、TiO2/(TiO2+Fe2O3)が0.001〜0.999であることを特徴とする請求項1〜12のいずれかに記載のLi2O−Al2O3−SiO2系結晶化ガラス。
- 質量%で、HfO2+Ta2O5 0.05%未満を含有することを特徴とする請求項1〜13のいずれかに記載のLi2O−Al2O3−SiO2系結晶化ガラス。
- 質量%で、Pt 7ppm以下を含有することを特徴とする請求項1〜14のいずれかに記載のLi2O−Al2O3−SiO2系結晶化ガラス。
- 質量%で、Rh 7ppm以下を含有することを特徴とする請求項1〜15のいずれかに記載のLi2O−Al2O3−SiO2系結晶化ガラス。
- 質量%で、Pt+Rh 9ppm以下を含有することを特徴とする請求項1〜16のいずれかに記載のLi2O−Al2O3−SiO2系結晶化ガラス。
- 外観が無色透明であることを特徴とする請求項1〜17のいずれかに記載のLi2O−Al2O3−SiO2系結晶化ガラス。
- 厚み3mm、波長300nmにおける透過率が10%以上であることを特徴とする請求項1〜18のいずれかに記載のLi2O−Al2O3−SiO2系結晶化ガラス。
- 主結晶としてβ─石英固溶体が析出していることを特徴とする請求項1〜19のいずれかに記載のLi2O−Al2O3−SiO2系結晶化ガラス。
- 30〜380℃における熱膨張係数が、30×10−7/℃以下であることを特徴とする請求項1〜20のいずれかに記載のLi2O−Al2O3−SiO2系結晶化ガラス。
- 30〜750℃における熱膨張係数が、30×10−7/℃以下であることを特徴とする請求項1〜21のいずれかに記載のLi2O−Al2O3−SiO2系結晶化ガラス。
- 厚み3mm、波長300nmにおける透過率が10%以上であり、30〜380℃における熱膨張係数が、30×10−7/℃以下であることを特徴とするLi2O−Al2O3−SiO2系結晶化ガラス。
- 厚み3mm、波長300nmにおける結晶化前後の透過率変化率が50%以下であることを特徴とするLi2O−Al2O3−SiO2系結晶化ガラス。
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