Fraunhofer-gesellschaft Zur Foerderung Der Angewandten Forschung E.v.

Schunk Kohlenstofftechnik Gmbh

H.c. Starck Ceramics Gmbh & Co. Kg

Stefan Siegel

Volker Thole

Mathias Herrmann

Gerhard Wötting

Roland Weiss

Martin Henrich

Thorsten Scheibel

Marco Ebert

Gotthard Nauditt

Andreas Lauer

Uwe Petasch

Gottfried Boden

Martin Kühn

Grit Michael

Lutz Frassek

A method for the production of a carbon or a ceramic component based on carbon, using a cellulose-containing semi-finished molded piece which is pyrolyzed. According to the invention, homogeneous large-size ceramic components may be produced, whereby a cellulose-containing, semi-finished molded piece containing fibers, chips or strands of homogeneous density distribution and homogeneous structure is used as semi-finished molded piece and is pyrolyzed in non-oxidizing gas atmospheres.

Method for the production of a carbon or ceramic component

The present invention is directed to bearings produced from a silicon nitride material. The silicon nitride material consists of a sintering aid selected from the group consisting of AlOand YO, silicon dioxide, and optionally, up to 10 mole %, based on the amount of silicon nitride, of an additive that reacts with silicon nitride, said additive selected from the group consisting of TiO, WO, MoOand mixtures thereof.

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Dresden, Germany

Stefan Siegel