Hot pressing of silicon nitride using beryllium additive

Details Hot pressing of silicon nitride using beryllium additive Hot pressing of silicon nitride using beryllium additive

C - Chemistry, Metallurgy

04

B

261/1

C04B 33/32 (2006.01) C04B 35/58 (2006.01) C04B 35/64 (2006.01)

Patent

CA 1096894

ABSTRACT OF THE DISCLOSURE A dense polycrystalline silicon nitride body is produced by hot-pressing a particulate mixture of silicon nitride and a beryllium additive. The hot-pressed silicon nitride body is useful in structural applications such as components for gas turbines. Silicon nitride is a choice material for such applica- tions because of its good high temperature strength and creep resistance, low thermal expansion coefficient and excellent oxidation resistance. ,

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