Process for preparing metal nitride powder

Details Process for preparing metal nitride powder Process for preparing metal nitride powder

1989-04-05

1990-12-04

Langel, Wayne A.

Chemistry of inorganic compounds

Nitrogen or compound thereof

Binary compound

423409, 423411, C01B 2106, C01B 21072, C01B 21076

Patent

active

049752600

ABSTRACT:
Metal nitride powder is prepared by heating a mixture substantially containing powder of a metal oxide or a metal hydroxide in a mixed gas of ammonia gas (NH.sub.3) and a hydrocarbon gas (CmHn) at a temperature ranging from 1300.degree. C. to 1,600.degree. C., in which the mixed gas has a ratio of ammonia gas (NH.sub.3) to hydrocarbon gas (CmHn) translated into CH.sub.4, ranging from 10 (NH.sub.3) to 1.0 (CH.sub.4) to 2,000 (NH.sub.3) to 1 (CH.sub.4), by volume.
The metal nitride powder contains lesser amounts of oxygen and carbon.

REFERENCES:
patent: 1188770 (1916-06-01), Hershman
patent: 3092455 (1963-06-01), Paris et al.
patent: 3745209 (1973-07-01), Middelhoek
patent: 3872136 (1975-03-01), Middelhoek
patent: 4562057 (1985-12-01), Goddard et al.

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