Oxidation behavior of Al₂O₃ reinforced MoSi₂ composite coatings fabricated by vacuum plasma spraying

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• 作者：Xiaoai Fei ; Yaran Niu ; Heng Ji ; Liping Huang ; Xuebin Zheng
• 关键词：D. Al₂O₃ ; MoSi₂ ; Coatings ; Vacuum plasma spraying ; Oxidation behavior
• 刊名：Ceramics International
• 出版年：2010
• 出版时间：September 2010
• 年：2010
• 卷：36
• 期：7
• 页码：2235-2239
• 全文大小：613 K

文摘

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.