Faserverstärktes keramisches Verbundmaterial und Methode zu seiner Herstellung

摘要

A fibre reinforced ceramic matrix composite is disclosed which comprises a ceramic matrix and a fibre preform integrally assembled therein, the fibre preform comprising a braided fabric derivable from braiding a yarn which is composed of a plurality of fibre bundles formed of a plurality of monofilaments bundled together, the braided fabric being present in a volume fraction of fibre (Vf) of 10 to 40% by volume based on the total volume of the ceramic matrix composite. The yarns (fibre bundles) may preferably be disposed in oblique relation to each other. Initial matrix cracking strength, crack propagation resistance and fracture energy can be significantly increased. Fibre preforms even of relatively complicated shape can be easily obtained and used in forming the matrix composite.