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本文采用热压烧结法制备出致密的SiCw增强BAS玻璃陶瓷基复合材料．结果表明，BAS基体晶化后获得以钡长石为主晶相和莫来石为次晶相的复相BAS玻璃陶瓷．晶须的加入对BAS基体有显著的强韧化效果，加入30vol％SiCw可使材料的室温抗弯强度和断裂韧性分别由基体的156MPa和1．40MPa·m1/2提高到356MPa和4．06MPa·m1/2．TEM观察结果表明，晶须／基体界面结合良好，无界面反应物和非晶层的存在．断口形貌和压痕裂纹扩展路径的SEM观察结果表明，复合材料的主要增韧机制为裂纹偏转、晶须的拔出和桥接．
In this paper, a dense SiCw reinforced BAS glass ceramic matrix composites were prepared by hot-pressing sintering. The results show that, after the BAS matrix is crystallized, a double phase BAS glass ceramic with a cristobalite as a main crystal phase and a mullite as a secondary crystal phase is obtained. The addition of whisker has significant toughening effect on BAS matrix. Adding 30vol% SiCw can increase the room temperature flexural strength and fracture toughness of the matrix from 156MPa and 1.40MPa · m1 / 2 to 356MPa and 4.06MPa · M1 / 2. The TEM observations show that the whisker / matrix interface is well bonded without the presence of interfacial reactants and amorphous layers. SEM observations of the fracture morphology and indentation crack propagation paths show that the main toughening mechanisms of the composites are crack deflection, whisker pull-out and bridging.