Improving the corrosion resistance of Mg-4.0Zn-0.2Ca alloy by micro-arc oxidation

被引：42
作者：
Xia, Y. H. [1 ]
Zhang, B. P. [2 ]
Lu, C. X. [2 ]
Geng, L. [3 ]
机构：
[1] Harbin Med Univ, Affiliated Hosp 1, Harbin 150001, Peoples R China
[2] Chinese Acad Sci, Inst Coal Chem, Natl Engn Lab Carbon Fiber Technol, Taiyuan 030001, Peoples R China
[3] Harbin Inst Technol, Sch Mat Sci & Engn, Harbin 150001, Peoples R China
来源：
MATERIALS SCIENCE & ENGINEERING C-MATERIALS FOR BIOLOGICAL APPLICATIONS | 2013年 / 33卷 / 08期
关键词：
Mg-Zn-Ca; Micro-arc oxidation; Microstructure; Corrosion resistance; Biodegradation; IN-VIVO CORROSION; MECHANICAL-PROPERTIES; MAGNESIUM ALLOY; COMPOSITE COATINGS; PURE MAGNESIUM; BEHAVIOR; ZN; CALCIUM; MICROSTRUCTURE; CYTOTOXICITY;
D O I：
10.1016/j.msec.2013.08.033
中图分类号：
TB3 [工程材料学]; R318.08 [生物材料学];
学科分类号：
0805 ; 080501 ; 080502 ;
摘要：
In this paper, corrosion resistance of the Mg-4.0Zn-0.2Ca alloy was modified by micro-arc oxidation (MAO) process. The microstructure and phase constituents of MAO layer were characterized by SEM, XRD and X-ray photoelectron spectroscopy (XPS). The corrosion resistance of MAO treated Mg-4.0Zn-0.2Ca alloy in the simulated body fluid were characterized by potentiodynamic polarization and electrochemical impedance spectroscopy (EIS) techniques. The microstructure results indicated that a kind of ceramic film was composed by MgO and MgF2 was formed on the surface of Mg-4.0Zn-02Ca alloy after MAO treatment. The electrochemical test reveals that the corrosion resistance of MAO treated samples increase 1 order of magnitude. The mechanical intensity test showed that the MAO treated samples has suitable mechanical properties. (C) 2013 Elsevier B.V. All rights reserved.
引用
收藏
页码：5044 / 5050
页数：7
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