SILICON CARBIDE FIBER REINFORCED SILICON CARBIDE COMPOSITE MATERIAL

摘要

Provided is a novel silicon carbide fiber reinforced silicon carbide composite material which is a composite material of a SiC ceramic and SiC fibers such that the toughness of the SiC ceramic is improved and such that the composite material can be manufactured in a high yield with a relatively simple manufacturing process without having to form oxidation-resistant coating or employ complex manufacturing steps such as an advanced interface control process. The silicon carbide fiber reinforced silicon carbide composite material is characterized by comprising a matrix of multiphase structures that includes a silicon carbide phase and a phase including a substance having low reactivity with silicon carbide, and silicon carbide fibers arranged in the matrix. The silicon carbide fiber reinforced silicon carbide composite material is a composite material which can be obtained by a manufacturing method suitable for mass production and features greatly improved fracture toughness while maintaining the excellent properties of a SiC ceramic.