Process for the production of dense silicon nitride materials

US5746969A · kind A · utility

Assignee

• BAYER HEALTHCARE LLC · DE

Inventors

• Lothar Schonfelder · Coburg, DE
• Gerhard Leimer · Rödental, DE
• Stefan Roth · Västerås, SE

Key dates

• Filing date: Oct 7, 1996
• Grant date: May 5, 1998
• Expiry date: Oct 7, 2016

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C04B35/591
• WIPO field: Materials, metallurgy
• WIPO sector: Chemistry

Abstract

A process for the production of dense silicon nitride materials by the nitriding of moulded bodies of silicon powder, silicon nitride powder and sintering additives under normal pressure and sintering of the moulded bodies at normal nitrogen pressure as well as silicon nitride materials produced correspondingly.