Kinetics mechanism of microwave sintering in ceramic materials |
| |
Authors: | HongShun Hao LiHua Xu Yong Huang XiaoMeng Zhang and ZhiPeng Xie |
| |
Affiliation: | (1) Department of Inorganic Non-metallic Materials, University of Science and Technology Beijing, Beijing, 100083, China;(2) Department of Materials Science and Engineering, Tsinghua University, Beijing, 100084, China |
| |
Abstract: | 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.
Supported by the State Key Program of National Natural Science of China (Grant No. 50332010) and the National Key Technology
Research and Development Program for Resource and Environment of China (Grant Nos. 2006BAB12B03, 2006BAB12B05) |
| |
Keywords: | microwave sintering ionic conductance kinetics sintering mechanism |
本文献已被 SpringerLink 等数据库收录! |
|