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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
Source PublicationINTERNATIONAL JOURNAL OF ELECTROCHEMICAL SCIENCE
Volume12Issue:11Pages:10199-10210
SubtypeArticle
AbstractMg-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.
KeywordMg-y-nd Alloy Microstructure Precipitated Phase Corrosion Resistance Electrochemistry
DOI10.20964/2017.11.14
Indexed BySCI
Language英语
WOS IDWOS:000417122400024
Citation statistics
Document Type期刊论文
Version出版稿
Identifierhttp://ir.qdio.ac.cn/handle/337002/154313
Collection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
Affiliation1.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
Recommended Citation
GB/T 7714
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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