CRYSTALLIZED GLASS AND ITS MANUFACTURING METHOD
PROBLEM TO BE SOLVED: To provide a low expansion crystallized glass of a milk white color or white color having excellent light diffusion characteristics, a crystallized glass member and their manufacturing method. SOLUTION: The crystallized glass contains each component of 50-62% SiO2, 22-26% Al2O3...
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| creator | NAMIKAWA HIROYUKI |
| description | PROBLEM TO BE SOLVED: To provide a low expansion crystallized glass of a milk white color or white color having excellent light diffusion characteristics, a crystallized glass member and their manufacturing method. SOLUTION: The crystallized glass contains each component of 50-62% SiO2, 22-26% Al2O3, 3-5% Li2O by mass%, an average crystal particle diameter of a crystalline phase is more than 100 nm and an average line expansion coefficient is ≤30×10-7/°C in a temperature range of 0 to 50°C. The manufacturing method contains a process for melting a glass raw material, a process for forming the molten glass, a process for gradually cooling the formed glass, a process for subjecting a first heat treatment for 0.1-200 hr at 650-750°C after gradual cooling and a second heat treatment for 0.1-50 hr at 800-1,000°C after the first heat treatment. COPYRIGHT: (C)2006,JPO&NCIPI |
| format | Patent |
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SOLUTION: The crystallized glass contains each component of 50-62% SiO2, 22-26% Al2O3, 3-5% Li2O by mass%, an average crystal particle diameter of a crystalline phase is more than 100 nm and an average line expansion coefficient is ≤30×10-7/°C in a temperature range of 0 to 50°C. The manufacturing method contains a process for melting a glass raw material, a process for forming the molten glass, a process for gradually cooling the formed glass, a process for subjecting a first heat treatment for 0.1-200 hr at 650-750°C after gradual cooling and a second heat treatment for 0.1-50 hr at 800-1,000°C after the first heat treatment. 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SOLUTION: The crystallized glass contains each component of 50-62% SiO2, 22-26% Al2O3, 3-5% Li2O by mass%, an average crystal particle diameter of a crystalline phase is more than 100 nm and an average line expansion coefficient is ≤30×10-7/°C in a temperature range of 0 to 50°C. The manufacturing method contains a process for melting a glass raw material, a process for forming the molten glass, a process for gradually cooling the formed glass, a process for subjecting a first heat treatment for 0.1-200 hr at 650-750°C after gradual cooling and a second heat treatment for 0.1-50 hr at 800-1,000°C after the first heat treatment. COPYRIGHT: (C)2006,JPO&NCIPI</abstract><oa>free_for_read</oa></addata></record> |
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| subjects | CHEMICAL COMPOSITION OF GLASSES, GLAZES, OR VITREOUSENAMELS CHEMISTRY GLASS JOINING GLASS TO GLASS OR OTHER MATERIALS MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES METALLURGY MINERAL OR SLAG WOOL OPTICAL ELEMENTS, SYSTEMS, OR APPARATUS OPTICS PHYSICS SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS,MINERALS OR SLAGS SURFACE TREATMENT OF GLASS |
| title | CRYSTALLIZED GLASS AND ITS MANUFACTURING METHOD |
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