发明名称 |
Reaction injection molding of silicon nitride ceramics having crystallized grain boundary phases |
摘要 |
A sintered, Si3N4-containing ceramic article is prepared by a reaction injection molding process comprising (1) injecting into a heated mold a fluid, nondilatant mixture of (a) at least 40% by volume of a powder mixture of (i) Si3N4, (ii) a silicate glass-forming sintering aid and (iii) a high metal content silicide, and (b) a curable Si3N4 precursor binder, to cure the binder and produce a hardened molded article, and (2) heating the molded article under a suitable atmosphere to convert the cured binder to a Si3N4-containing ceramic. The molded article is then sintered under a vacuum to crystallize the silicate glass phase by deoxygenation.
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申请公布号 |
US5504047(A) |
申请公布日期 |
1996.04.02 |
申请号 |
US19950387683 |
申请日期 |
1995.02.13 |
申请人 |
LANXIDE TECHNOLOGY COMPANY, LP |
发明人 |
LUKACS, III, ALEXANDER;MATSUMOTO, ROGER L. K. |
分类号 |
C01B21/068;C04B35/571;C04B35/589;C04B35/591;C04B35/634;C04B35/64;(IPC1-7):C04B35/58 |
主分类号 |
C01B21/068 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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