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| 标题 Corrosion performance of Al2CrFeCoxCuNiTi high-entropy alloy coatings in acid liquids |
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Corrosion performance of Al(2)CrFeCoxCuNiTi high-entropy alloy coatings in acid liquids 作者:Qiu, XW (Qiu, Xing-wu)[ 1,2 ] ; Wu, MJ (Wu, Ming-jun)[ 2 ] ; Liu, CG (Liu, Chun-ge)[ 2 ] ; Zhang, YP (Zhang, Yun-peng)[ 3 ] ; Huang, CX (Huang, Chong-xiang)[ 1 ] JOURNAL OF ALLOYS AND COMPOUNDS 卷: 708 页: 353-357 DOI: 10.1016/j.jallcom.2017.03.054 出版年: JUN 25 2017 查看期刊影响 摘要 The Al(2)CrFeCoxCuNiTi high-entropy alloy coatings were prepared by laser cladding on Q235 steel surface. The microstructure was characterized by scanning electron microscopy with spectroscopy (SEM/EDS). Electrochemical workstation was used to test the corrosion resistance of Al2CrFeCox CuNiTi high-entropy alloy coatings and Q235 steel in H2SO4 and HCl solutions. Experimental results show that the coating and its substrate are well combined. The cladding zone is mainly composed of equiaxed grains, as well as "cat foot shaped" grains and "snowflake" grains distributed in the matrix grains. Cracks appear in the coatings due to thermal stress. The corrosion resistance of Al(2)CoxCrCuFeNiTi coatings is excellent in H(2)SO4 and HCl solutions, which can be attributed to three factors: the formability of Co element, passivation film formed on the alloy surface and the microstructure of the alloy. Increasing Co content can lead to an enhancement of the corrosion resistance of high-entropy alloy coatings in 0.5 mol/L HCl solution. Cyclic polarization curve shows no pitting corrosion in the 0.5 mol/L H2SO4 solution for the Co-2.0 high-entropy alloy coating, but slight pitting corrosion in 0.5 mol/LHCl solution for the Co-0.5 high-entropy alloy coating due to the Cl- in the medium. (C) 2017 Elsevier B.V. All rights reserved. 关键词 作者关键词:Al2CrFeCoxCuNiTi; High-entropy alloys; Laser cladding; Corrosion performance; Potentiodynamic polarization curves KeyWords Plus:NI INTERMETALLIC COMPOUNDS; MECHANICAL-PROPERTIES; AQUEOUS ENVIRONMENTS; TENSILE PROPERTIES; MICROSTRUCTURE; TEMPERATURE; BEHAVIOR 作者信息 通讯作者地址: Huang, CX (通讯作者) 显示增强组织信息的名称 Sichuan Univ, Sch Aeronaut & Astronaut, Chengdu 610065, Peoples R China. 地址: 显示增强组织信息的名称 [ 1 ] Sichuan Univ, Sch Aeronaut & Astronaut, Chengdu 610065, Peoples R China [ 2 ] Sichuan Coll Architectural Technol, Deyang 618000, Peoples R China 显示增强组织信息的名称 [ 3 ] Xian Univ Technol, Sch Mat Sci & Engn, Xian 710048, Peoples R China 电子邮件地址:chxhuang@scu.edu.cn 基金资助致谢 基金资助机构 授权号 National Natural Science Foundation of China 11672195 Project of Sichuan Provincial Department of Education 16ZB0512 Project of Sichuan College of Architecture Technology 查看基金资助信息 出版商 ELSEVIER SCIENCE SA, PO BOX 564, 1001 LAUSANNE, SWITZERLAND 类别 / 分类 研究方向:Chemistry; Materials Science; Metallurgy & Metallurgical Engineering Web of Science 类别:Chemistry, Physical; Materials Science, Multidisciplinary; Metallurgy & Metallurgical Engineering 文献信息 文献类型:Article 语种:English 入藏号: WOS:000400713300046 ISSN: 0925-8388 eISSN: 1873-4669 期刊信息 Impact Factor (影响因子): Journal Citation Reports 其他信息 IDS 号: EU0PI Web of Science 核心合集中的 "引用的参考文献": 30 Web of Science 核心合集中的 "被引频次": 0 |
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