| 氧化铝及氧化铝基复合材料强韧性的研究 |
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| 引用本文： | 周洋,詹国栋,徐明英,张以增.氧化铝及氧化铝基复合材料强韧性的研究[J].华中科技大学学报(自然科学版),1994(Z1). |
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| 作者姓名： | 周洋 詹国栋 徐明英 张以增 |
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| 作者单位： | 中科院上海陶瓷研究所，华中理工大学材料科学与工程系 |
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| 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。
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| 关 键 词： | 强韧性，增韧机理，氧化铝，陶瓷基复合材料 |
Mechanical Properties of Alumina and Alumina-Matrix Composites |
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| Zhou YangMaterials Sci.&Eng.,H. U.S.T.,Wuhan ,China.,Zhan Guodong,Xu Mingying, Zhang Yizeng.Mechanical Properties of Alumina and Alumina-Matrix Composites[J].JOURNAL OF HUAZHONG UNIVERSITY OF SCIENCE AND TECHNOLOGY.NATURE SCIENCE,1994(Z1). |
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| Authors: | Zhou YangMaterials Sci&Eng H UST Wuhan China Zhan Guodong Xu Mingying Zhang Yizeng |
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| Institution: | Zhou YangMaterials Sci.&Eng.,H. U.S.T.,Wuhan 430074,China).,Zhan Guodong,Xu Mingying, Zhang Yizeng |
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| Abstract: | 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. |
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| Keywords: | ceramic composite mechanical properties toughening mechanism alumina |
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