A MANGANESE OXIDE CONTAINED COATING FOR BIODEGRADABLE AZ31B MAGNESIUM ALLOY

Tingting Yan, Lili Tan, Dangsheng Xiong (), Bingchun Zhang and Ke Yang
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Tingting Yan: Department of Material Science and Engineering, Nanjing University of Science and Technology, Nanjing 210094, China;
Lili Tan: Institute of Metal Research, Chinese Academy of Sciences, Shenyang 110016, China
Dangsheng Xiong: Department of Material Science and Engineering, Nanjing University of Science and Technology, Nanjing 210094, China
Bingchun Zhang: Institute of Metal Research, Chinese Academy of Sciences, Shenyang 110016, China
Ke Yang: Institute of Metal Research, Chinese Academy of Sciences, Shenyang 110016, China

Surface Review and Letters (SRL), 2009, vol. 16, issue 04, 533-538

Abstract: A manganese oxide contained coating was prepared on biodegradable AZ31B magnesium alloy to control the degradation of AZ31B and improve its biocompatibility. Morphology, composition, and corrosion resistance of the coating were studied. The SEM observations showed that the coating was approximately 4–6 μm in thickness with net-like microcracks. The XPS analysis indicated that the coating was mainly composed ofMgO,Mg(OH)2,MnO2,Mn2O3, andMn3O4. It was found that AZ31B with such coating showed better corrosion resistance in simulated blood plasma through electrochemical and immersion tests. The hemolytic assay indicated that the treated AZ31B had no hemolytic effect.

Keywords: AZ31B magnesium alloy; conversion coating; corrosion resistance; hemolysis (search for similar items in EconPapers)
Date: 2009
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DOI: 10.1142/S0218625X09012937

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