Influences of ZrO2 nanoparticles on the microstructure and mechanical behavior of Ce-TZP/Al2O3 nanocomposites

被引：0
|
作者：
Gang Yang
Junchu Li
Gaochao Wang
Masatomo Yashima
Silin Min
机构：
[1] Nanchang Institute of Aeronautical Technology,Department of Materials Science and Engineering
[2] Interdisciplinary Graduate School of Science and Engineering,Department of Materials Science and Engineering
[3] Tokyo Institute of Technology,undefined
来源：
Journal of Materials Science | 2005年 / 40卷
关键词：
Polymer; Microstructure; Mechanical Property; Al2O3; Agglomeration;
D O I：
暂无
中图分类号：
学科分类号：
摘要：
Influences of ZrO2 nanoparticles on the mechanical properties and microstructure of hot-pressing Ce-TZP/Al2O3 ceramics were investigated. Meanwhile, t-ZrO2 to m-ZrO2 transformation toughening mechanism was investigated by X-ray diffractometry (XRD) method, and deflection of samples under applied stress were recorded too. The results show that when the percentage of ZrO2 was 20%, the mechanical properties and microstructures of materials are optimum. Moreover, TEM observation show dislocation structures formation both in the Al2O3 and on the grain boundary. Because the dislocation agglomeration and fixation by ZrO2 nanoparticles could deflect cracking or stop cracking development, a strengthening and toughening effect could be achieved.
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页码：6087 / 6090
页数：3
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