Predicting Failure Mechanism of SiC/SiC Composites as a Function of Temperature and Oxygen Concentration

摘要: Ceramic matrix composites (CMCs) are being developed to take advantage of the high-temperature properties ceramics while overcoming low fracture toughness monolithic ceramics. Toughening mechanisms, such as cracking, crack deflection, interface debonding, crack-wake bridging and fiber pullout, incorporated in CMCs reduce tendency for catastrophic failure found Ceramics reinforced with particulate, whiskers continuous fibers exhibit varying aspects these toughening mechanisms; however, reinforcement offers greatest improvements toughness. Composites carbide, oxide, glass carbon matrices utilized development CMCs. In case oxide CMCs, exhibits excellent corrosion resistance so that a goal composite is not detract from this pre-existing property. This which frequently need coatings provide adequate protection. The purpose chapter review database understanding behavior intent information will be useful materials improved performance reliability.