METHOD FOR MANUFACTURING GLASS MEMBER
PROBLEM TO BE SOLVED: To provide a method for manufacturing a crystallized glass member of a low expansion material enabling adhesion of good optical surfaces without requiring the polishing with high precision such as a flatness of λ/4 or more or a high heat treatment temperature of 1,000°C or high...
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| creator | NAMIKAWA HIROYUKI |
| description | PROBLEM TO BE SOLVED: To provide a method for manufacturing a crystallized glass member of a low expansion material enabling adhesion of good optical surfaces without requiring the polishing with high precision such as a flatness of λ/4 or more or a high heat treatment temperature of 1,000°C or higher. SOLUTION: The method comprises the steps of precisely polishing each of the surfaces to be brought into contact, of two or more parts composed of a raw glass that has the same composition and can be crystallized, to a flatness of λ (633 nm) or less, heating these polished surfaces to a temperature in a glass transition region while they are in contact with each other to weld them, heat-treating the welded raw glass members at a higher crystal nucleation temperature to form a crystal nucleus, and crystallizing the raw glass at a further higher crystal growth temperature to stick them. COPYRIGHT: (C)2004,JPO |
| format | Patent |
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SOLUTION: The method comprises the steps of precisely polishing each of the surfaces to be brought into contact, of two or more parts composed of a raw glass that has the same composition and can be crystallized, to a flatness of λ (633 nm) or less, heating these polished surfaces to a temperature in a glass transition region while they are in contact with each other to weld them, heat-treating the welded raw glass members at a higher crystal nucleation temperature to form a crystal nucleus, and crystallizing the raw glass at a further higher crystal growth temperature to stick them. 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SOLUTION: The method comprises the steps of precisely polishing each of the surfaces to be brought into contact, of two or more parts composed of a raw glass that has the same composition and can be crystallized, to a flatness of λ (633 nm) or less, heating these polished surfaces to a temperature in a glass transition region while they are in contact with each other to weld them, heat-treating the welded raw glass members at a higher crystal nucleation temperature to form a crystal nucleus, and crystallizing the raw glass at a further higher crystal growth temperature to stick them. 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SOLUTION: The method comprises the steps of precisely polishing each of the surfaces to be brought into contact, of two or more parts composed of a raw glass that has the same composition and can be crystallized, to a flatness of λ (633 nm) or less, heating these polished surfaces to a temperature in a glass transition region while they are in contact with each other to weld them, heat-treating the welded raw glass members at a higher crystal nucleation temperature to form a crystal nucleus, and crystallizing the raw glass at a further higher crystal growth temperature to stick them. COPYRIGHT: (C)2004,JPO</abstract><edition>7</edition><oa>free_for_read</oa></addata></record> |
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| language | eng |
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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 SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS,MINERALS OR SLAGS SURFACE TREATMENT OF GLASS |
| title | METHOD FOR MANUFACTURING GLASS MEMBER |
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