期刊
CORROSION SCIENCE
卷 52, 期 10, 页码 3504-3508出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.corsci.2010.06.028
关键词
Magnesium; Potentiostatic; Electrodeposited films; Passive films; Oxide coatings
资金
- Creative Research Group of National Natural Science Foundation of China [50721003]
- National Science Fund for Distinguished Young Scholars [50825102]
- State Key Laboratory for Powder Metallurgy of CSU
MgO coatings were prepared on magnesium alloy surface by an anodic electrodeposition process in concentrated KOH solution followed by heat treatment in air. The phase composition and microstructure of the as-formed MgO coatings were analyzed by X-ray diffraction (XRD) and scanning electron microscopy (SEM). The corrosion behavior of the MgO-coated samples was evaluated by electrochemical measurements and immersion tests in Hanks' solution. The results showed that the MgO-coated Mg alloy exhibited a much superior stability and lower corrosion rate, and thus enabled to improve the corrosion resistance, whereas the bare Mg alloy suffered from severely localized corrosion attack. (C) 2010 Elsevier Ltd. All rights reserved.
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