Sgl Carbon Ag

Rainer Zimmerman-Chopin

Andreas Kienzle

Martin U Christ

Moritz Bauer

Udo Gruber

Jens Rosenlöcher

Process for protecting fiber-reinforced, carbon-containing composites whose matrix comprises, at least in the outer layer, silicon carbide (SiC) and also silicon (Si) and/or silicon alloys against oxidation, which comprises the steps a) impregnation of the composite with an aqueous, phosphate-containing solution, b) drying, c) heat treatment at a temperature which is at least sufficient to convert the dried solution into insoluble compounds which are suitable for forming a self-healing glass, wherein the composite is treated oxidatively to form silicon oxide (SiO) either prior to step a), between steps a) and b) or during or after step b) and/or c).

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Ellgau, Germany

Rainer Zimmerman-Chopin