| High Temperature Oxidation Behavior of La2O3-MosSi3/MoSi2 Composites |
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| 作者姓名： | Yan Jianhui Zhang Houan Tang Siwen Li Yimin |
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| 作者单位： | [1]Institute of Material Surface Engineering, Hunan University of Science and Technology, Xiangtan 411201, China [2]State Key Laboratory of Powder Metallurgy, Central South University, Changsha 410083, China |
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| 摘 要： | The oxidation behavior of 0. 8% La2O3- Mo5Si3/MoSi2 composites at 1200℃ in air was investigated. The results reveal that the oxidation resistance of the material with 0. 8% La2O3 and Mo5Si3 is impaired. The oxidation resistance is decreased with increasing Mo5Si3 content. The mass loss follows a linear law in the initial oxidation. With oxidation time prolonging, a continuous and dense oxidation scale prevents oxygen from diffusing increasing when and leads to mass change a Mo5Si3 content is less than 30%. However, the composite shows ＂PEST＂ with the addition of 40% Mo5Si3. With increasing Mo5Si3 content, the oxidation resistance of 0.8% La2O3- Mo5Si3/MoSi2 decreases. This attributes to the poor oxidation resistance of M05Si3 and the relative density decreasing of 0. 8% La2O3-Mo5Si3/MoSi2 composite.
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| 关 键 词： | Mo5Si3 MoSi2 氧化 稀土元素 La2O3化合物 |
High Temperature Oxidation Behavior of La2O3-MosSi3/MoSi2 Composites |
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| Yan Jianhui Zhang Houan Tang Siwen Li Yimin.High Temperature Oxidation Behavior of La2O3-MosSi3/MoSi2 Composites[J].Journal of Rare Earths,2006,24(5):548-548. |
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| Abstract: | |
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| Keywords: | Mo5Si3 MoSi2 oxidation behavior rare earths |
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