期刊
APPLIED SURFACE SCIENCE
卷 292, 期 -, 页码 1030-1039出版社
ELSEVIER SCIENCE BV
DOI: 10.1016/j.apsusc.2013.11.038
关键词
Mg-1Ca alloy; Micro-arc oxidation (MAO); Electrolyte; Corrosion resistance; Cytotoxicity
类别
资金
- National High Technology Research and Development Program of China [2011AA030103]
- National Basic Research Program (973) of China [2009CB930004, 2012CB619102]
- National Natural Science Foundation of China [31070846, 30870623]
A newly-developed Mg-1Ca (wt%) alloy was treated by micro-arc oxidization (MAO) in KF-silicate- (Si coating), KF-phosphate- (P coating) and KF-silicate-phosphate (SiP coating) electrolytes. The microstructure, composition and corrosion resistance of the resultant MAO coatings were investigated using scanning electron microscopy (SEM), X-ray photoelectron spectroscopy (XPS), and X-ray diffractometry (XRD). Electrochemical analysis and immersion test in Hanks' solution and MU assay for in-vitro toxicity against MG63 cells were subsequently carried out. Results showed that all the three MAO coatings contributed to the improvement of corrosion resistance and cytocompatibility of substrate; however, P coating outperformed the two others due to its specific microstructure and composition. (C) 2013 Elsevier B.V. All rights reserved.
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