发明授权
US5356720A Shaped self-supporting ceramic composite bodies comprising silicon nitrides 失效
包括氮化硅的成形自支撑陶瓷复合体

Shaped self-supporting ceramic composite bodies comprising silicon
nitrides
摘要:
The present invention relates to self-supporting ceramics or ceramic composite bodies which include a polycrystalline ceramic material comprising the oxidation reaction product of a silicon parent metal with a nitrogenous oxidant, including a nitrogenous vapor-phase oxidant, and optionally, one or more metallic constituents dispersed throughout the polycrystalline ceramic material. A barrier means comprising, for example, at least one of titanium nitride, zirconium nitride, aluminum nitride and boron nitride or a barrier means that has undergone chemical changes or alterations may be removably attached to the self-supporting ceramics or ceramic composite bodies of the present invention.
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