Hard non-oxide or oxide ceramic / hard non-oxide or oxide ceramic composite hybrid article

摘要

Described are hybrid articles comprising at least one hard non-oxide or oxide ceramic component of at least 95% of theoretical density directly bonded to, and different from, a hard non-oxide or oxide ceramic composite component comprising a tribology enhancing component. The at least one hard non-oxide or oxide ceramic component comprises a member of the group consisting of silicon carbide, pressureless sintered silicon carbide, liquid phase sintered silicon carbide, reaction bonded silicon carbide, tungsten carbide, aluminum oxide, and silicon nitride. The at least one hard non-oxide or oxide ceramic composite component comprises a member of the group consisting of silicon carbide, pressureless sintered silicon carbide, liquid phase sintered silicon carbide, reaction bonded silicon carbide, tungsten carbide, aluminum oxide, and silicon nitride.

主权项

1. A hard non-oxide ceramic/hard non-oxide ceramic composite hybrid article comprising:
(a) at least one silicon carbide ceramic component of at least 95% of theoretical density;directly bonded to, and different from
(b) at least one component formed of a ceramic composite material comprising 50-95% by weight silicon carbide, and further comprising 5-50% by weight a tribology enhancing component selected from carbon and carbon graphite.