| Te对Ni-Cr合金高温抗氧化性能的影响 |
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| 引用本文： | 苏义祥,代英秋,张媛媛,郭海锋,王占华.Te对Ni-Cr合金高温抗氧化性能的影响[J].兰州理工大学学报,2012,38(1):1-4. |
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| 作者姓名： | 苏义祥 代英秋 张媛媛 郭海锋 王占华 |
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| 作者单位： | 兰州理工大学甘肃省有色金属新材料重点实验室,甘肃兰州,730050 |
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| 摘 要： | 采用粉末冶金方法制备含Te的Ni-Cr合金试样.在800士5℃高温进行抗氧化实验.通过氧化动力学曲线分析、氧化皮金相组织和断面形貌观察、X-ray分析表明:Te的加入在合金内部形成新相Cr2TeO4和Fe3TeO,提高合金材料氧化皮的粘附性.并且有效抑制Cr2O3的挥发反应,从而改善Cr2O3氧化层的致密性.
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| 关 键 词： | Te-Ni-Cr Ni-Cr合金 高温氧化 |
Effects of Te on high-temperature oxidation resistance of Ni-Cr alloy |
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| SU Yi-xiang
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DAI Ying-qiu
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ZHANG Yuan-yuan
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GUO Hai-feng
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WANG Zhan-hua.Effects of Te on high-temperature oxidation resistance of Ni-Cr alloy[J].Journal of Lanzhou University of Technology,2012,38(1):1-4. |
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| Authors: | SU Yi-xiang DAI Ying-qiu ZHANG Yuan-yuan GUO Hai-feng WANG Zhan-hua |
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| Institution: | (State Key Laboratory of Gansu Advanced Nonferrous Matel Materials,Lanzhou Univ.of Tech.,Lanzhou 730050,China) |
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| Abstract: | The test sampling of Ni-Cr alloy containing Te was prepared with the method of powder metallurgy.The experiment was performed at temperature of 800±5 ℃.After analysing oxidation dynamic curves,microstructure of oxidation surface,observing section micrographic morphology and microstructure and analyzing X-ray photograph,it could be concluded that the addition of Te would generate two new phases Cr2TeO4 and Fe3TeO.Thus the adhesiveness of the alloy oxidation surface was improved.In addition,the addition of Te would restrain the volatilization of Cr2O3 effectively,so that the density of the oxidation layer was improved. |
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| Keywords: | Te-Ni-Cr Ni-Cr alloy high-temperature oxidation |
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