Study on Abrasion and Corrosion Resistance of Ti-6Al-4V Alloy Implanted by Carbon in Hank's Simulated Body Fluid

The corrosion characteristic of Ti-6Al-4V alloy implanted by carbon was investigated in Hanks simulated body fluid. The results indicated that a disordered film, which was composed of TiC and Ti by XRD analysis, was formed on the surface of Ti-6Al-4V when Carbon was implanted. Electrochemical tests manifested, after implanted, the alloys corrosion potentials and increased, polarization resistance were increased, and anodic polarization current density decreased in Hanks simulated body fluid. The electrochemical properties were improved. The reason was that the disordered carbide film formed on alloys surface prevented alloying elements form dissolution and enhanced its corrosion resistance. For C implanted sample, the anodic polarization current density was increase when the alloy was abraded. It manifested that friction and abrasion conditions made corrosive environment more serious and accelerated the corrosion process. The alloys friction coefficient and abrasion rate were obviously decreased, and its hardness was increased when it was implanted C.