Process for preparing silicon carbide by carbothermal reduction

US5340417A · kind A · utility

Assignee

• THE DOW CHEMICAL COMPANY · US

Inventors

• Alan W. Weimer · Niwot, US
• William G. Moore · Raleigh, US
• William Rafaniello · Midland, US
• Raymond P. Roach · Midland, US

Key dates

• Filing date: Jun 28, 1991
• Grant date: Aug 23, 1994
• Expiry date: Jun 28, 2011

Classification

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

Abstract

A process for preparing silicon carbide by carbothermal reduction is disclosed. This process involves rapidly heating a particulate reactive mixture of a silica source and a carbon source to form a product which shows improved uniformity of crystal size. The product of this process can be used to form a densified part.