Oxidation behavior of Al2O3 reinforced MoSi2 composite coatings fabricated by vacuum plasma spraying |
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| Authors: | Xiaoai Fei Yaran Niu Heng Ji Liping Huang Xuebin Zheng |
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| Affiliation: | 1. Key Laboratory of Inorganic Coating Materials, Chinese Academy of Sciences, Shanghai 200050, China;2. Shanghai Institute of Ceramics, Chinese Academy of Sciences, Shanghai 200050, China |
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| Abstract: | MoSi2, MoSi2–10 vol.% Al2O3, MoSi2–30 vol.% Al2O3 (denoted as MA0, MA1, MA3, respectively) coatings were fabricated by vacuum plasma spraying (VPS), and their oxidation behavior was examined at low temperature (500 °C) and high temperature (1500 °C). The test at 500 °C showed that the addition of Al2O3 effectively restrained the pest oxidation of MoSi2. The MA1 coating had satisfactory fluid surface and presented good oxidation resistance at 1500 °C. However, the MA3 coating showed worse oxidation resistant behavior compared with the MA0 coating because of mullite formation. |
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