Abstract
SiC thin film were continuously coated by CVD method on carbon bundle, which were consisted of thousands filaments. The film was made from high purity SiC and it was high dense. Each filaments of the bundle was coated homogeneously by sub-micron SiC. SiC⋅Cf/SiC composites were fabricated by using these surface modified carbon fibers. Characteristics and mechanical properties of SiC⋅Cf/SiC composite were compared with those of Cf/SiC composite. Mechanical properties of SiC⋅Cf/SiCcomposite differed from those of Cf/SiC composite. It was considered that the difference of them was caused by the decrease of the interfacial strength between fiber and matrix in SiC⋅Cf/SiC composites.