In-vitro corrosion of AZ31 magnesium alloys by using a polydopamine coating

查看全文 作　　者：Anna [1]Carangelo;Annalisa [1]Acquesta;Tullio [1]Monetta

机构地区：[1]Department of Chemical Engineering,Materials and Industrial Production,University of Napoli Federico II,Piazzale Tecchio 80,80125,Napoli,Italy

出　　处：《Bioactive Materials》索引2019年第4卷第1期,共8页

摘　　要：Magnesium alloys are candidates to be used as biodegradable biomaterials for producing medical device.Their use is restricted due to the high degradation rate in physiological media.To contribute to solving this problem,a polydopamine(PDOPA)layer could be used to increase adhesion between the metallic substrate and external organic coating.In this paper,the corrosion behaviour of samples was investigated to determine their performance during the long-term exposure in simulated body fluid.Electrochemical methods including Open Circuit Potential(OCP)and Electrochemical Impedance Spectroscopy(EIS)were used to investigate the corrosion resistance of samples.The results demonstrated a decreasing of the substrate degradation rate when PDOPA was used as interlayer supposing a synergistic effect when it was used together with the organic coating. 关键词：Magnesium alloy Polydopamine coating Corrosion resistance BIODEGRADABILITY

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In-vitro corrosion of AZ31 magnesium alloys by using a polydopamine coating

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