Process for preparing aluminium nitride powder via...

Details Process for preparing aluminium nitride powder via... Process for preparing aluminium nitride powder via...

C - Chemistry, Metallurgy

01

B

C01B 21/072 (2006.01)

Patent

CA 2106669

2106669 9219534 PCTABS00017 Rapidly heat powdered aluminum metal, whether alone or in admixture with a previously prepared aluminum nitride powder or a powdered removable or compatible material, in the presence of a source of nitrogen to a temperature within a range of 1873 to 2373 K to convert the powdered aluminum metal to aluminum nitride, then promptly quench the aluminum nitride product. Substantially all of the aluminum metal particles are heated at a heating rate of from 100 K to 10,000,000 K per second. The aluminum metal powder or admixture containing aluminum metal powder is maintained at that temperature for period of 0.2 to 10 seconds. The product has a surface area between 2 and 8 square meters per gram and an oxygen content of less than 1.2 weight percent.

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