Oxidation mechanism of ZrB2/SiC ceramics based on phase-field model |
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| Authors: | Yinji Ma Xuefeng Yao Wenfeng Hao Liangjia Chen Daining Fang |
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| Affiliation: | 1. Department of Engineering Mechanics, Applied Mechanics Lab, Tsinghua University, Beijing 100084, PR China;2. LTCS, Department of Mechanics and Aerospace Engineering, College of Engineering, Peking University, Beijing 100871, PR China |
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| Abstract: | In this paper, the phase-field oxidation mechanism of ultra-high temperature ZrB2/SiC ceramics is investigated theoretically. Firstly, a phase-field model is developed to analyze the oxidation behaviors of multiphase materials. Secondly, the evolutions of the porosity and the oxidation stress for the oxidized ZrB2/SiC ceramics with different temperatures and different oxygen partial pressures are predicted, and the influences of the mechanical factors on the oxidation behaviors of ZrB2/SiC ceramics are discussed. Finally, two-dimensional oxidation behaviors of ZrB2/SiC ceramics are simulated and analyzed. |
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| Keywords: | A. Ceramic-matrix composites (CMCs) B. High-temperature properties B. Porosity/Voids C. Modelling |
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