Kinetics mechanism of microwave sintering in ceramic materials

被引：20
|
作者：
Hao HongShun [1 ]
Xu LiHua [1 ]
Huang Yong [2 ]
Zhang XiaoMeng [1 ]
Xie ZhiPeng [2 ]
机构：
[1] Univ Sci & Technol Beijing, Dept Inorgan Nonmet Mat, Beijing 100083, Peoples R China
[2] Tsinghua Univ, Dept Mat Sci & Engn, Beijing 100084, Peoples R China
来源：
SCIENCE IN CHINA SERIES E-TECHNOLOGICAL SCIENCES | 2009年 / 52卷 / 09期
关键词：
microwave sintering; ionic conductance; kinetics; sintering mechanism; STABILIZED ZIRCONIA; FIELD;
D O I：
10.1007/s11431-008-0217-3
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
Based on the traditional sintering model incorporating the characteristic of microwave sintering, the ionic conductance diffusion mechanism in microwave sintering was studied. A flat-ball model was presented to describe the kinetics process in microwave sintering, and was applied to the sintering process of TZP and ZrO2-Al2O3 ceramics. The results indicate that the shrinkage rate of materials in microwave sintering is proportional to t (2/3) and r (-4/3), respectively, where t is the sintering time and r is the particle radius. Whereas, the shrinkage rate of materials in conventional sintering is proportional to sintering time t (2/5). Our model suggests that microwave sintering is faster than conventional sintering, which shows a good agreement with the experimental observation in sintering process of TZP and ZrO2-Al2O3.
引用
收藏
页码：2727 / 2731
页数：5
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