Process for preparing aluminum nitride powder via controlled combustion nitridation

US5126121A · kind A · utility

Assignee

• THE DOW CHEMICAL COMPANY · US

Inventors

• Alan W. Weimer · Niwot, US
• John P. Henley · Midland, US
• Gene A. Cochran · Midland, US
• Glenn A. Eisman · Midland, US
• William G. Moore · Raleigh, US

Key dates

• Filing date: May 3, 1991
• Grant date: Jun 30, 1992
• Expiry date: May 3, 2011

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C01P2006/80
• WIPO field: Materials, metallurgy
• WIPO sector: Chemistry

Abstract

Rapidly heat powdered aluminum in the presence of a source of nitrogen at a temperature of 1873 to 2373 K. to produce aluminum nitride, then promptly quench the aluminum nitride product. 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.