Sgl Carbon Se

Bjs Ceramics Gmbh

Birgit Reiter

Andreas Kienzle

Ingrid Kraetschmer

Sandra Sitter

Ingrid KRÄTSCHMER

A method for producing ceramic fibers of a composition in the SiC range, starts from a spinning material that contains a polysilane-polycarbosilane copolymer solution. The spinning material is extruded through spinnerets in a dry spinning method and spun through a spinning duct into green fibers, and the green fibers are subsequently pyrolyzed. Accordingly, the polysilane-polycarbosilane solution contains between 75 wt. % and 95 wt. %, in particular between 80 and 90 wt. %, of an indifferent solvent, and the spinnerets have a capillary diameter between 20 and 70 &#x3bc;m, in particular between 30 and 60 &#x3bc;m, in particular between 40 and 50 &#x3bc;m.

Method for producing ceramic fibers of a composition in the SiC range and for producing SiC fibers

A method for producing a ceramic substance includes producing a homogeneous mixture containing carbon fibers having a fiber length distribution of D=&#x3c;15 &#x3bc;m and at least one powdery and carbonizable binder. The homogeneous mixture is compacted under the action of pressure. The compacted homogeneous mixture is thermally treating for carbonizing, or for carbonizing and graphitizing, to obtain a carbon substance. The carbon substance is siliconized to obtain a ceramic substance.

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Wuppertal, Germany

Birgit Reiter