期刊
MATERIALS LETTERS
卷 132, 期 -, 页码 15-18出版社
ELSEVIER SCIENCE BV
DOI: 10.1016/j.matlet.2014.06.019
关键词
Magnesium alloys; Corrosion; Surfaces; Biocompatibility; Cathodic plasma electrolysis
资金
- Natural Science Foundation of China [21273142, 51303218]
- Fundamental Research Funds for the Central Universities [CQDXWL-2013-029]
- Science and Technology Research Project of Chongqing Municipal Government [CSTC2012gg-yyjs10023]
To improve corrosion resistance and enhance biocompatibility of magnesium alloy, cathodic plasma electrolysis (CPE), a liquid phase plasma technique, was used to fabricate zirconia (ZrO2) coatings onto WE43 magnesium alloy substrate. Surface morphology and phase composition of the coatings on magnesium alloy substrates were investigated by scanning electron microscope (SEM) and X-ray diffraction (XRD), respectively. The potentiodynamic polarization test in simulated body fluid (SBF) indicated that corrosion resistance of magnesium alloy was significantly improved by this CPE treatment. The results of cytocompatibility including osteoblasts adhesion and viability suggested that surface modification of magnesium alloy with ZrO2 coating fo'rmed via CPE technique is beneficial for cell proliferation and differentiation. The approach presented here should be an attractive way for surface modification of magnesium-based implants to improve anticorrosion and bone osseointegration. (C) 2014 Elsevier B.V. All rights reserved.
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