Method of producing silicon nitride powders

Details Method of producing silicon nitride powders Method of producing silicon nitride powders

C - Chemistry, Metallurgy

01

B

23/195

C01B 21/068 (2006.01) C04B 35/591 (2006.01) C04B 35/593 (2006.01)

Patent

CA 1293106

4881-255 60-135,876 comb. METHOD OF PRODUCING SILICON NITRIDE POWDERS Abstract A method of producing silicon nitride powders having a high .alpha.-Si3N4 content and a fine and uniform particle size is disclosed, which comprises mixing SiO powder with C powder and, if necessary, Si powder and/or Si3N4 powder, and then firing at 1,400-1,800°C in a nitriding atmosphere having N2 partial pressure of not less than 2 atmospheric pressures.

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