Method of making moisture resistant aluminum nitride powder and

Details Method of making moisture resistant aluminum nitride powder and Method of making moisture resistant aluminum nitride powder and

1992-06-08

1993-08-10

Beck, Shrive

Coating processes

Particles, flakes, or granules coated or encapsulated

Inorganic base

427212, 4273977, 428403, 428405, B05D 700, B32B 516

Patent

active

052347125

ABSTRACT:
A method for making a moisture-resistant aluminum nitride-containing powder which includes (a) coating a layer of silicate onto aluminum nitride-containing powder having aluminum nitride on at least a portion of its surface and (b) heat-treating the coated aluminum nitride-containing powder at a temperature of from about 350.degree. to about 1000.degree. C. for a period of time sufficient to cause the silicate to react with the surface aluminum nitride thereby forming a layer of Si-Al-O-N bonded to the surface aluminum nitride. The silicate has alkyl or alkoxyalkyl radicals attached thereto. The method yields a moisture- resistant aluminum nitride-containing powder having a layer of Si-Al-O-N reaction-bonded to the surface aluminum nitride.

REFERENCES:
patent: 4572844 (1986-02-01), Inoue et al.

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