Continuous preparation of silicon nitride powder

Details Continuous preparation of silicon nitride powder Continuous preparation of silicon nitride powder

1996-12-04

1998-10-06

Langel, Wayne

Chemistry of inorganic compounds

Silicon or compound thereof

Binary compound

C01B 21068

Patent

active

058172858

ABSTRACT:
Silicon nitride powder is continuously prepared by feeding metallic silicon powder into a fluidized bed comprising silicon nitride powder and nitrogen or ammonia gas and discharging a nitrided product from the fluidized bed. The metallic silicon powder is pretreated at a temperature of 1,000.degree.-1,400.degree. C. under a vacuum of 0.001-100 Torr before it is subject to nitriding reaction.

REFERENCES:
patent: 5232677 (1993-08-01), Fukuoka et al.
patent: 5344634 (1994-09-01), Edler
patent: 5456896 (1995-10-01), Fukuoka et al.

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