Kinetics mechanism of microwave sintering in ceramic materials

被引：21

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：

120111 [工业工程];

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

页码：2727 / 2731

页数：5

共 19 条

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MECHANISMS FOR NONTHERMAL EFFECTS ON IONIC MOBILITY DURING MICROWAVE PROCESSING OF CRYSTALLINE SOLIDS [J].