Formation of titanium oxide thin film on biomedical magnesium alloy by high dose titanium and oxygen dual ion implantation

WE43 magnesium alloy is potentially biodegradable metallic stent material due to its good mechanical property and corrosion resistance. However, the fast degradation rate in the physiological environment cannot meet clinical needs. In order to further enhance the corrosion resistance, high dose titanium and oxygen ion implantation is performed to modify the surface of the WE43 magnesium alloy in this study. X-ray photoelectron spectroscopy (XPS) is used to characterize the microstructures in the near surface layer, whereas electrochemical impedance spectroscopy, potentiodynamic polarization, and immersion test …