Corrosion Resistance and Biocompatibility of Magnetron Sputtering Fe-based Composite Coating on AZ31 Magnesium Alloy
Fe-based composite coating was prepared on AZ31 magnesium alloy by RF magnetron sputtering.The phase,elemental composition and microstructure of the coating were characterized by XRD,XPS and SEM.The corrosion resistance of the coating was tested by simulated body fluid immersion and electrochemical testing.The results show that compared with AZ31 matrix,the corrosion potential of composite coating AZ31 is increased by about 170 mV,and the corrosion current density is reduced by two orders of magnitude.The extract of the sample in RPMI 1640 medium was co-cultured with human umbilical vein endothelial cells(HUVEC),and its cytotoxicity was evaluated by CCK-8 experiment.It was found that the compound coating AZ31 had the least toxicity and the endothelial cells had a high proliferation rate.The iron-based composite coating AZ31 magnesium alloy has good corrosion resistance and biocompatibility.
NETL
NSTL
万方数据
