| 摘要 |
PROBLEM TO BE SOLVED: To produce a silicon carbide sintered compact used for machine parts, etc., requiring heat and wear resistances, etc. SOLUTION: This silicon carbide sintered compact has silicon carbide grains contg. 2-20mol% sintering aid based on 80-98mol% silicon carbide. The sintering aid consists of oxide of a rare earth element, aluminum nitride and silica, the molar ratio of the aluminum nitride to the rare earth element is 0.2-5 and the silica content is 0-15mol%. The gaps between the silicon carbide grains have been filled with oxycarbonitride glass or this glass and microcrystals of a compd. consisting of the constituent elements of the sintering aid. |
