发明名称 CERAMIC ARTICLE AND METHOD OF MAKING IT
摘要 Characterized by substantially zero coefficient of thermal expansion over a general range of room temperature variations, the article consists essentially of a sintered consolidated particulate mixture of substantially equal portions of first and second materials. First material is composed mainly of SiO2 with critical lesser amounts of Al2O3 and Li2O in a mole ratio of 1.5 or less. Second material is composed mainly of SiO2 together with critical lesser amounts of Al2O3, TiO2 and Li2O constituting at least 95 wt. percent of the material and with small amounts of required MgO and optional ZnO. Green article formed of the particulate mixture is given three-stage heat treatment at progressively higher temperatures to develop the very low thermal expansion coefficient, sintering and substantial imperviousness to water and air.
申请公布号 US3715220(A) 申请公布日期 1973.02.06
申请号 USD3715220 申请日期 1969.03.19
申请人 CORNING GLASS WORKS,US 发明人 CONFER J,US;MCTAGGART G,US
分类号 C03B19/06;C03B32/02;C03C10/00;(IPC1-7):C03C3/22;C03C3/04;C03C3/30 主分类号 C03B19/06
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