| Improvement on the Oxidation Resistance of a Ti3Al Based Alloy by Cr1-xAlxN （0≤x≤0.47） Coatings |
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| 作者姓名： | Ming ZHU Meishuan LI Shuwang DUO Yanchun ZHOU |
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| 作者单位： | [1]Shenyang National Laboratory for Materials Science, Institute of Metal Research, Chinese Academy of Sciences, Shenyang 110016, China [2]Jiangxi Key Laboratory of Surface Engineering, Jiangxi Science ＆ Technology Normal University, Nanchang 330013, China |
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| 基金项目： | Acknowledgements This work was financially supported by the National Natural Science Foundation of China under grant Nos. 50371095 and 50571106. The authors also thank Prof. R.Yang （IMR, CAS） for his affording the alloy. |
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| 摘 要： | Cr1-xAlxN coatings have been deposited on a Ti3Al based alloy by reactive sputtering method. The results of the isothermal oxidation test at 800-900℃ showed that Cr1-xAlxN coatings could remarkably reduce the oxidation rate of the alloy owing to the formation of Al2O3＋Cr2O3 mixture oxide scale on the surface of the coatings. No spallation of the coatings or oxide scales took place during the cyclic oxidation at 800℃. Ti was observed to diffuse into the coatings, the diffusion distance of which was very short, and the diffusion ability of it was proportional to the AI content in the coatings. Compared to Ti, Nb can diffuse much more easily through the whole coatings and oxide scales.
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| 关 键 词： | Ti3Al基合金 Cr1-xAlxN镀层 抗氧化性能 改进 |
| 收稿时间： | 2006-03-13 |
| 修稿时间： | 2006-10-17 |
Improvement on the Oxidation Resistance of a Ti3Al Based Alloy by Cr1-xAlxN (0≤x≤0.47) Coatings |
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| Ming ZHU Meishuan LI Shuwang DUO Yanchun ZHOU.Improvement on the Oxidation Resistance of a Ti3Al Based Alloy by Cr1-xAlxN (0≤x≤0.47) Coatings[J].Journal of Materials Science & Technology,2007,23(3):373-378. |
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| Authors: | Ming ZHU Meishuan LI Shuwang DUO Yanchun ZHOU |
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| Affiliation: | Shenyang National Laboratory for Materials Science, Institute of Metal Research, Chinese Academy of Sciences, Shenyang 110016, China... |
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| Abstract: | Cr1-xAlxN coatings have been deposited on a Ti3Al based alloy by reactive sputtering method. The results of the isothermal oxidation test at 800–900℃ showed that Cr1-xAlxN coatings could remarkably reduce the oxidation rate of the alloy owing to the formation of Al2O3+Cr2O3 mixture oxide scale on the surface of the coatings. No spallation of the coatings or oxide scales took place during the cyclic oxidation at 800℃. Ti was observed to diffuse into the coatings, the diffusion distance of which was very short, and the diffusion ability of it was proportional to the Al content in the coatings. Compared to Ti, Nb can diffuse much more easily through the whole coatings and oxide scales. |
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| Keywords: | Cr1-xAlxN coatings Oxidation Interdiffusion Ti3Al based alloy |
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