▎ 摘　　要

CaP/chitosan/graphene coating on Mg alloy was obtained by electrophoretic deposition (EPD) and transformation in a phosphate buffer solution (PBS). The microstructures and compositions of the composite coatings were studied by scanning electron microscope (SEM), Fourier transformed infrared spectroscopy (FTIR), X-ray diffraction (XRD) and Raman spectroscopy. The element concentration was investigated by inductively coupled plasma optical emission spectrometer (ICPOES) test. The degradation behavior of Mg based CaP/chitosan/graphene in m-SBF was researched by soaking experiment and electrochemical performance test. The cytotoxicity of the prepared material to SaOS-2 cells was determined by CCK assay. The results indicated that addition of graphene had a positive effect on improving the bioactivity and cell viability of the CaP/chitosan coating. CaP/chitosan/graphene coating could protect the Mg alloy from corroding in m-SBF.