Silicon nitride sintered bodies and method of manufacturing...

Details Silicon nitride sintered bodies and method of manufacturing... Silicon nitride sintered bodies and method of manufacturing...

C - Chemistry, Metallurgy

04

B

261/1

C04B 35/58 (2006.01) C04B 35/584 (2006.01) C04B 35/593 (2006.01)

Patent

CA 2016336

Silicon nitride sintered bodies are disclosed which contain silicon carbide therein and in which intergranular phases between silicon nitride particles are substantially crystallized. Additionally, a manufacturing method of the sintered bodies is disclosed, in which a silicon carbide powdery raw material is used as an additive when preparing raw powders and the intergranular phases are crystallized during a cooling stage following a firing. Densification of the structure of the sintered body and crystallization of the intergranular phases occurs by this method, thereby making it possible to produce sintered bodies having intergranular phases with few glass phases uncrystallized and excellent high-temperature strengths.

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