Preparation and composition of sialon grain and powder

Details Preparation and composition of sialon grain and powder Preparation and composition of sialon grain and powder

C - Chemistry, Metallurgy

04

B

261/1

C04B 35/00 (2006.01) C01B 21/082 (2006.01) C04B 35/597 (2006.01)

Patent

CA 1221710

Abstract of the Disclosure Dense sialon grain is produced by briquetting mixtures of micronized silicon and reactive alumina. Sialon powder is produced by ball milling the briquettes after nitriding. The starting mixtures can contain from 10 to 38% reactive alumina with the balance of the mixture micronized silicon. Mixtures made within this range when pressed into dense briquettes and nitrided produce useful sialon grain having minimal free alumina contamination.

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