In this paper, continuous carbon fiber reinforced silicon carbideceramic mattrix composites were fabricated through Folymer precursorpyrolysis methods, using PAN M40JB carbon fiber as reinforceiment andpolycarbosilane as precursor. The relationships of the number ofinfiltration-pyrolysis on the composites bulk density, bendingstrength (three-point), fracture toughness (SENB) and the interfacialshear strength were systematic studied. The processing condition suchas molding pressure and the number of infiltration-pyrolysis cycleswere determined and optimized. The fractiire surface werecharacteristic by Scanning electron microscopy (SEM) at the sametime. The results showed that with the number ofinfiltration-pyrolysis increased the amount of fiber pull-outdecreascd, the bulk density, fracture toughness and interfacial shearstrength increased but the bending strength increased then decreased.The molding pressure 15MPa was suitable.
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