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Effect of the Precipitated Phases on Corrosion Behavior of Mg-Y-Nd Ternary Alloy
Jiang, Quantong1; Zhao, Xia1; Zhang, Kui2; Li, Xinggang2; Zhang, Jie1; Hou, Baorong1
2017-11-01
发表期刊INTERNATIONAL JOURNAL OF ELECTROCHEMICAL SCIENCE
卷号12期号:11页码:10199-10210
文章类型Article
摘要Mg-5Y-xNd alloys (x=0.5, 1.0, 1.5 wt.%) were investigated to reveal the influence of precipitated phase on corrosion resistance. The microstructure, precipitated phases and corrosion behaviors of different samples were analyzed by scanning electron microscope, energy dispersive spectrometer and X -Ray Diffraction. The volume fraction of the Mg-12(Y,Nd) phase increased, whereas that of the Mg3(Y,Nd) phase decreased with increasing Nd-content. The weight loss rate decreased from 10.9584 mg.cm(-2). d(-1) (23.0126 mm.y(-1)) to 6.2184 mg.cm(-2). d(-1) (13.0586 mm.y(-1)). The open circuit potential, potentiodynamic polarization curve, electrochemical impedance spectroscope and scanning kelvin probe confirmed that the corrosion rates of Mg-5Y-xNd alloys follow the order Mg-5Y-0.5Nd > Mg-5Y-1.0Nd > Mg-5Y-1.5Nd. This phenomenon occurred because the Mg3(Y,Nd) precipitated phase with a face-centered cubic lattice had a more positive potential than the Mg-12(Y,Nd) phase with an orthorhombic lattice. Thus, the Mg-3(Y,Nd) precipitated phase acted as the cathode of the electrochemical reaction, and accelerated the corrosion of the Mg matrix more effectively than the Mg12(Y,Nd) phase.
关键词Mg-y-nd Alloy Microstructure Precipitated Phase Corrosion Resistance Electrochemistry
DOI10.20964/2017.11.14
收录类别SCI
语种英语
WOS记录号WOS:000417122400024
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文献类型期刊论文
版本出版稿
条目标识符http://ir.qdio.ac.cn/handle/337002/154313
专题海洋腐蚀与防护研究发展中心
实验海洋生物学重点实验室
海洋地质与环境重点实验室
作者单位1.Chinese Acad Sci, Inst Oceanol, Marine Corros & Protect Ctr, 7 Nanhai Rd, Qingdao 266071, Peoples R China
2.Gen Res Inst Nonferrous Met, State Key Lab Nonferrous Met & Proc, Beijing 100088, Peoples R China
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Jiang, Quantong,Zhao, Xia,Zhang, Kui,et al. Effect of the Precipitated Phases on Corrosion Behavior of Mg-Y-Nd Ternary Alloy[J]. INTERNATIONAL JOURNAL OF ELECTROCHEMICAL SCIENCE,2017,12(11):10199-10210.
APA Jiang, Quantong,Zhao, Xia,Zhang, Kui,Li, Xinggang,Zhang, Jie,&Hou, Baorong.(2017).Effect of the Precipitated Phases on Corrosion Behavior of Mg-Y-Nd Ternary Alloy.INTERNATIONAL JOURNAL OF ELECTROCHEMICAL SCIENCE,12(11),10199-10210.
MLA Jiang, Quantong,et al."Effect of the Precipitated Phases on Corrosion Behavior of Mg-Y-Nd Ternary Alloy".INTERNATIONAL JOURNAL OF ELECTROCHEMICAL SCIENCE 12.11(2017):10199-10210.
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