| Effect of Cr on high temperature oxidation of TiAl |
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| 引用本文： | 董自强 姜惠仁 冯晓然 王中雷. Effect of Cr on high temperature oxidation of TiAl[J]. 中国有色金属学会会刊, 2006, 16(A03): 2004-2008 |
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| 作者姓名： | 董自强 姜惠仁 冯晓然 王中雷 |
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| 作者单位： | School of Materials Science and Engineering, Beijing University of Aeronautics and Astronautics, Beijing 100083, China |
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| 摘 要： | The oxidation behavior of TiAl-Cr（mole fraction of Cr：0-20%） was investigated at 1 173 K in air. The microstructure and composition of the oxide scale were studied by X-ray diffractometry（XRD）, scanning electron microscopy（SEM） and electro-probe micro-analyses（EPMA）. The results show that with the addition of Cr content from 0 to 8%, the oxidation resistance decreases, especially at 3%, which is mainly attributed to the doping effect of Cr^3＋. TiAI-Cr（mole fraction of Cr： 15%-20%） has good oxidation resistance, and the protective alumina layer is preferentially formed on the surface of TiAI alloy, which is due to an increase of mole ratio of Al to Ti in TiAl-Cr alloys.
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| 关 键 词： | 铬 高温氧化 X光线衍射 密度 金属化合物 |
| 收稿时间： | 2006-07-28 |
| 修稿时间： | 2006-09-15 |
Effect of Cr on high temperature oxidation of TiAl |
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| DONG Zi-qiang, JIANG Hui-ren, FENG Xiao-ran, WANG Zhong-lei. Effect of Cr on high temperature oxidation of TiAl[J]. Transactions of Nonferrous Metals Society of China, 2006, 16(A03): 2004-2008 |
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| Authors: | DONG Zi-qiang JIANG Hui-ren FENG Xiao-ran WANG Zhong-lei |
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| Abstract: | |
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| Keywords: | TiAl chromium oxidation |
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