期刊
CORROSION SCIENCE
卷 50, 期 8, 页码 2304-2309出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.corsci.2008.05.016
关键词
Magnesium; SEM; EIS; XPS; Oxide coatings
资金
- Natural Science Foundation of Chongqing, China [CSTC. 200513134055]
- Southwest Normal University [XSGX06]
The CeO2 thin film was prepared via sol-gel method on fluorinated AZ91D magnesium alloy surfaces. The surface morphology, composition and the corrosion resistance of the film were investigated in details using scanning electron microscope, X-ray photoelectron spectroscopy and electrochemical impedance spectroscopy as well as potentiodynamic polarization tests. It was found that small amount of MgO and MgF2 were encapsulated in CeO2 thin film. The electrochemical measurement results demonstrated that the CeO2 thin film on fluorinated AZ91D magnesium alloy could improve the corrosion resistance approximately by two orders of magnitude compared with that of the bare substrate. (C) 2008 Elsevier Ltd. All rights reserved.
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