期刊
JOURNAL OF ALLOYS AND COMPOUNDS
卷 543, 期 -, 页码 109-117出版社
ELSEVIER SCIENCE SA
DOI: 10.1016/j.jallcom.2012.07.130
关键词
AZ31 magnesium alloy; Microarc oxidation; Corrosion; Simulated body fluid; Hydroxyapatite; Ca/P ratio
资金
- UAF Graduate School
- National Basic Research Program of China [2012CB619100]
- National Natural Science Foundation of China [51072057]
The electrochemical corrosion behavior of microarc oxidation (MAO) coatings produced at various oxidation times on AZ31 Mg alloys was studied in a simulated body fluid (SBF). The potentiodynamic polarization and electrochemical impedance spectroscopy (EIS) were used to characterize the corrosion behavior. The influences of the MAO time on the microstructure and corrosion properties are discussed. The initial porosity of the MAO coating was evaluated by the potentiodynamic polarization method. Postcorrosion phase identification showed that hydroxyapatite (HA) was formed on the surface of the samples. The ratio of Ca/P in HA was determined by the X-ray Fluorescence (XRF) technique. A physical model of the corrosion process with equivalent circuits at different corrosion stages is proposed. (C) 2012 Elsevier B.V. All rights reserved.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据