Process for producing non-oxidic ceramic having a defined thermal conductivity

US5756042A · kind A · utility

Assignee

• Hoechst GmbH · DE

Inventors

• Rainer Buckpesch · Hofheim, DE
• Hans-Michael Guther · Nierstein, DE
• Christine Kostler · Hattersheim, DE
• Andreas Roosen · Hofheim, DE
• Katharina Seitz · Frankfurt, DE

Key dates

• Filing date: Feb 21, 1995
• Grant date: May 26, 1998
• Expiry date: Feb 21, 2015

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C04B35/581
• WIPO field: Materials, metallurgy
• WIPO sector: Chemistry

Abstract

A process is proposed for producing non-oxidic ceramic having a thermal conductivity in a predetermined range. A shaped body of non-oxidic ceramic material is heated to remove organic constituents, and is subsequently thermally treated in an oxygen-containing atmosphere to incorporate oxygen atoms into the crystal lattice of the non-oxidic ceramic, with the temperature and/or the hold time at this temperature being selected as a function of the predetermined thermal conductivity range, and the shaped body is finally sintered in a non-oxidizing atmosphere.