Densification Behavior and Microstructure Evolution of SiC_f/SiC Composites Incorporated with In Situ Grown SiC Nanowires

摘要

SiC nanowires could be grown homogeneously within SiC fiber preforms by controlling the concentration of a reactant gas. The morphology and the growth behavior of the SiC nanowires were largely dependent on the degree of the reactant supersaturation. The SiC nanowires incorporated in the fiber preform increased the surface area at which the matrix deposition could take place, enhancing an efficiency of the matrix infiltration and altering the remaining pore structure of the SiC_f/SiC composite.