Metal/metalloid nitride/carbide ceramic powders prepared by flas

Details Metal/metalloid nitride/carbide ceramic powders prepared by flas Metal/metalloid nitride/carbide ceramic powders prepared by flas

1994-03-21

1996-01-16

Bonner, C. Melissa

Compositions: ceramic

Ceramic compositions

Carbide or oxycarbide containing

501 88, 501 92, 501 96, 501 97, 501 98, 423365, 423371, 4234151, 423382, C01B 3130, C01B 2106

Patent

active

054847516

ABSTRACT:
Metal and/or metalloid nitride and/or carbide powders, e.g., amorphous or crystalline spherical particulates having a mean diameter greater than 0.2 .mu.m 90% of which being less than 0.4 .mu.m in size, well suited for the production of ceramic shaped articles exhibiting good thermomechanical properties and useful, for example, in the automotive and aeronautic fields, are prepared by flash pyrolyzing coarse drops of a precursor compound convertible into such nitride and/or carbide, at an elevated temperature and for such period of time as to convert the precursor compound into said amorphous or crystalline powder.

REFERENCES:
patent: 4891339 (1990-01-01), Colcote et al.
patent: 5055431 (1991-10-01), Blum et al.
Mizutani et al, Ceramic Powder Science III, p. 59, 1990.

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