Effect of nitrogen on corrosion behaviour of a novel high nitrogen medium-entropy alloy CrCoNiN manufactured by pressurized metallurgy
查看参考文献64篇
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文摘
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A novel high nitrogen medium-entropy alloy CrCoNiN, which had higher strength and slightly lower ductility than CrCoNi alloy, was successfully manufactured by pressurized metallurgy. The microstructure and corrosion behaviour were investigated by microscopic, electrochemical and spectroscopic methods. The results indicated that nitrogen existed in the form of Cr_2 N precipitates and uniformly distributed N atoms, and nitrogen alloying significantly refined the grain size. Besides, nitrogen enriched on the outmost surface of passive film and metal/film interface as ammonia (NH_3 and NH_4~+) and CrN, respectively. The significant improvement of corrosion resistance of CrCoNiN was attributed to the lower metastable pitting susceptibility together with thicker, less defective and more compact passive film. |
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来源
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Journal of Materials Science & Technology
,2018,34(10):1781-1790 【核心库】
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DOI
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10.1016/j.jmst.2018.03.021
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关键词
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Medium-entropy alloy
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Nitrogen
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Pitting corrosion
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Passive film
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Metastable pitting
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地址
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1.
School of Metallurgy, Northeastern University, Shenyang, 110819
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Institute of Mechanics, Chinese Academy of Sciences, State Key Laboratory of Nonlinear Mechanics, Beijing, 100190
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School of Materials Science and Engineering, Northeastern University, Shenyang, 110819
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语种
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英文 |
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文献类型
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研究性论文 |
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ISSN
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1005-0302 |
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学科
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金属学与金属工艺 |
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基金
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国家自然科学基金
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the Transformation Project of Major Scientific and Technological Achievements in Shenyang
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文献收藏号
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CSCD:6335108
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参考文献 共
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