Formation of TiN films on biomedical NiTi s ng ∗

eering d 22 J TiN coati, high attention in b ition bonding bet n-sig TiN coating od to surface. Two proc e pre and corrosio nanoi showed that e TiN increased w films was 2/1. The ctly the mechanical and corrosion properties of the NiTi alloy, open circuit potential (OCP) values of the specimens increased with the negative pulse bias voltage and reached its maximum value when the flow rate of Ar/N2 was 2/1. Combined with the results of Tafel and anodic polarization curves, an excellent corrosion resistant TiN coating by PIIID technique could be obtained by varying the process parameters