Method for producing .alpha.-form silicon nitride fine powders

Details Method for producing .alpha.-form silicon nitride fine powders Method for producing .alpha.-form silicon nitride fine powders

1985-06-24

1986-05-20

Cooper, Jack

Chemistry of inorganic compounds

Silicon or compound thereof

Binary compound

423406, C01B 21068

Patent

active

045900531

ABSTRACT:
A method for producing a high-grade fine powder of .alpha.-form silicon nitride (.alpha.-Si.sub.3 N.sub.4) for use as sintered bodies excellent in heat-stability and mechanical strength which comprises heat-treating, in an atmosphere containing nitrogen, a mixture prepared by adding additive:

REFERENCES:
patent: 4368180 (1983-01-01), Inoue et al.
patent: 4428916 (1984-01-01), Komeya et al.
patent: 4514370 (1985-04-01), Inoue et al.
Journal of the Ceramic Association, Japan, 85 [11], 537-542 (1977), with English Abstract.
J. Am. Ceram. Soc., 65 (12), C-205 (1982).
Journal of Materials Science 10 (1975), pp. 1243-1246.

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