Fabrication of short SiC fiber reinforced SiC matrix composites with high fiber volume fraction

Short fiber reinforced SiC/SiC composites with high fiber volume fraction were fabricated by NITE process. The effects of fiber length and sintering condition on microstructure and mechanical properties were investigated. Although, high sintering temperature promotes the densification of SiC matrix but leads to the degradation of F/M interface. The flexural strength of SF-SiC/SiC with long fiber length shows higher flexural strength compared to those of SF-SiC/SiC with short fiber length. SF-SiC/SiC composites with complicated shape have been successfully fabricated by pseudo-HIP.