Microstructure and Properties in Simulated Seawater of Copper-Doped Micro-arc Coatings on TC4 Alloy

Micro-arc oxidation (MAO) ceramic coatings were prepared on TC4 titanium alloys by adding CuSO4 to a (NaPO3)6 base solution. The microstructures of the MAO characterized scanning electron microscopy (SEM), energy dispersive (EDS), and X-ray photoelectron spectroscopy (XPS). corrosion resistance wear these evaluated via hydrochloric acid immersion weight deficit friction tests. Those results indicated presence Cu in coating form CuO Cu2O. Incorporation thickness roughness increase coating. has lower coefficient (0.2) upon addition 4 g/L CuSO4. antibacterial properties maximized at 6 However, copper-doped did not exceed undoped This study shows that electrolyte successfully copper-containing micro-arc coatings, which improved