Evolution processes of the corrosion behavior and structural characteristics of plasma electrolytic oxidation coatings on AZ31 magnesium alloy

被引：60
|
作者：
Chen, Dong [1 ]
Wang, Ruiqiang [1 ]
Huang, Zhiquan [2 ]
Wu, Yekang [1 ]
Zhang, Yi [2 ]
Wu, Guorui [1 ,3 ]
Li, Dalong [4 ]
Guo, Changhong [4 ]
Jiang, Guirong [4 ]
Yu, Shengxue [1 ]
Shen, Dejiu [1 ]
Nash, Philip [5 ]
机构：
[1] Yanshan Univ, Coll Mat Sci & Engn, State Key Lab Metastable Mat Sci & Technol, Qinhuangdao 066004, Peoples R China
[2] Zhejiang Geely Automobile Co Ltd, Ningbo 315800, Zhejiang, Peoples R China
[3] CITIC Dicastal Ltd, Share Ltd, Qinhuangdao 066000, Peoples R China
[4] Yanshan Univ, Coll Mech Engn, Qinhuangdao 066004, Peoples R China
[5] IIT, Thermal Proc Technol Ctr, Chicago, IL 60616 USA
来源：
APPLIED SURFACE SCIENCE | 2018年 / 434卷
基金：
中国国家自然科学基金;
关键词：
magnesium alloy; Plasma electrolytic oxidation; Corrosion resistance; Structural characteristics; Evolution mechanism; MICRO-ARC OXIDATION; ELECTROCHEMICAL IMPEDANCE SPECTROSCOPY; SODIUM-SILICATE CONCENTRATION; SOL-GEL COATINGS; PEO COATINGS; OXIDE COATINGS; MG ALLOY; AZ91D; ALUMINUM; MICROSTRUCTURE;
D O I：
10.1016/j.apsusc.2017.09.232
中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
Evolution processes of the corrosion behavior and structural characteristics of the plasma electrolytic oxidation (PEO) coated AZ31 magnesium alloy were investigated by using scanning electron microscope (SEM) equipped with energy dispersive X-ray spectroscopy (EDS), X-ray diffraction (XRD), potentio-dynamic polarization curves and electrochemical impedance spectroscopy (EIS) measurements. Detached coating samples were fabricated by an electrochemical method and more details of the internal micro-structure of coatings were clearly observed on the fractured cross-section morphologies of the samples compared to general polished cross-section morphologies. Evolution mechanisms of the coating corrosion behavior in relation to the evolution of micro-structural characteristics were discussed in detail. (C) 2017 Published by Elsevier B.V.
引用
收藏
页码：326 / 335
页数：10
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