Si3n4 formed by nitridation of sintered silicon compact...

Details Si3n4 formed by nitridation of sintered silicon compact... Si3n4 formed by nitridation of sintered silicon compact...

C - Chemistry, Metallurgy

04

B

261/1, 25/128

C04B 35/58 (2006.01) C04B 35/591 (2006.01)

Patent

CA 1076611

ABSTRACT OF THE DISCLOSURE A polycrystalline silicon nitride body is produced by shaping a particulate mixture of silicon powder and boron into a green body, sintering the body to a density ranging from 60% to 75% of the theoretical density of silicon, said sintered body having pores which are interconnecting and open to the surface of the body, and reacting said sintered body with gaseous nitrogen to convert it to silicon nitride.

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