Process of producing a ceramic/fiber composite using a molten polysilazone

US5176941A · kind A · utility

Assignee

• Hoechst GmbH · DE

Inventors

• Marcellus Peuckert · Hofheim, DE
• Martin Bruck · Hofheim, DE
• Thomas Gerdau · Eppstein, DE
• Tilo Vaahs · Kelkheim, DE
• Hans-Jerg Kleiner · Kronberg, DE
• Fritz Aldinger · Rodenbach, DE

Key dates

• Filing date: Nov 30, 1989
• Grant date: Jan 5, 1993
• Expiry date: Nov 30, 2009

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C08G77/62
• WIPO field: Materials, metallurgy
• WIPO sector: Chemistry

Abstract

The invention relates to a process for the production of a ceramic/fiber composite. The process comprises impregnating fibers with a molten polysilazane in a first step, converting the polysilazane in the fibers into the infusible state in a second step and, in a third step, heating the impregnated fibers to 800.degree. to 2000.degree. C. in an atmosphere of nitrogen, noble gas, or ammonia.