Method of making moisture resistant aluminum nitride powder...

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

C - Chemistry, Metallurgy

04

B

C04B 41/85 (2006.01) C01B 21/072 (2006.01) C04B 35/58 (2006.01) C08K 9/02 (2006.01) C08K 9/06 (2006.01)

Patent

CA 2137251

A method for making a moisture-resistant aluminum nitride-containing powder which includes (a) coating a layer of silicate onto alulminum 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 350 to 1000 °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.

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