氧化铝及氧化铝基复合材料强韧性的研究  

Mechanical Properties of Alumina and Alumina-Matrix Composites

作　　者：周洋[1] 詹国栋[1] 徐明英[1] 张以增[1] 

机构地区：[1]中科院上海陶瓷研究所,华中理工大学材料科学与工程系

出　　处：《华中理工大学学报》1994年第1X期94-98,共5页Journal of Huazhong University of Science and Technology

摘　　要：应用相变增韧、相变－晶须复合及相变－颗粒复合等方式对氧化铝陶瓷进行增强。通过基体材料与复合材料强韧性的对比及断口微观分析，研究了各材料的断裂特点及不同增韧方式的增韧机理与效果。Transformation toughening,whisker reinforcement and particle toughening are jointlyused to reimforce alumina ceramics;The fracture behavior and toughening mechanism of thecomposites are studied by comparing the mechanical properties and carrying out fracture mi-croanalysis On the basis of transformation toughening,the addition of whisker can substan-tially improve the toughness,but the strength remains nearly unchanged and the addition ofparticles can simultaneously improve both the toughness-and strength to a certain extent.The mechanism of joint transformation-whisker toughening is not just a simple superpositionof the two;Rather,they do interact on each other and may give a result of improved tough-ening under certain conditions. The fining of grain in matrix caused by the addition of thesecondary phase is a reason for the improvement of composite properties.

关 键 词：强韧性 增韧机理 氧化铝 陶瓷基复合材料 

分 类 号：TQ174.758[化学工程—陶瓷工业]