期刊
JOURNAL OF THE AMERICAN CERAMIC SOCIETY
卷 96, 期 1, 页码 44-46出版社
WILEY
DOI: 10.1111/jace.12105
关键词
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资金
- National Natural Science Foundation of China [90816007, 91116006, 10902059]
- Tsinghua University Initiative Scientific Research Program [2011Z02173]
- Foundation for the Author of National Excellent Doctoral Dissertation of China (FANEDD) [2007B30]
We report the diffusion and stress coupling effect during oxidation. An analytical model is developed for the stress and diffusion coupling effect based on equilibrium relationship and diffusion equation considering for the stress effect. Compressive stress will generate during the oxidation due to the growth strain. This growth stress can modify the diffusion coefficient; therefore, the oxidation kinetics is also affected. The coupling effect reduces both the oxidation rate and the stress. The proposed model is applied to predict the oxidation evolution for SiC and its consistence with the experimental data demonstrates the theoretical analysis.
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