Method for the production of ceramics

US7479249B2 · kind B2 · utility

Assignee

• DEUTSCHES ZENTRUM FÜR LUFT—UND RAUMFAHRT E.V. · DE

Inventors

• Michaela Gahr · Langenau, DE
• Walter Krenkel · Renningen, DE
• Jens Schmidt · Fellbach, DE
• Andreas Hofenauer · Germering, DE
• Olaf Treusch · Munich, DE
• Fritz Troeger · Haimhausen, DE
• Gerd Wegener · Gräfelfing, DE
• Joerg Fromm · Herrsching am Ammersee, DE

Key dates

• Filing date: Jun 28, 2004
• Grant date: Jan 20, 2009
• Expiry date: Oct 27, 2025

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C04B2235/96
• WIPO field: Materials, metallurgy
• WIPO sector: Chemistry

Abstract

In order to improve a method for the production of structural ceramics and/or functional ceramics consisting of silicon carbide ceramics, with which a porous precursor body is produced from a cellulose-containing material, the porous precursor body is converted into an open-pored carbon body by means of pyrolysis and the open-pored carbon body is converted into silicon-containing carbide ceramics, in particular, silicon carbide ceramics as a result of infiltration of silicon-containing materials, in such a manner that the structural ceramics and/or functional ceramics as well as the components produced therefrom can be produced with properties which are as reproducible as possible it is suggested that at least cellulose-containing powder be used as starting ingredient for the production of the precursor body.