**1.2.2.5 Effect of current density on the surface morphology and corrosion resistance of Ti-O film**

With an SZX-STAD2 type of OLYMPUS metallurgical microscope, the Ti-O films obtained by cathodic-electrodeposition at different current densities for 4min respectively of TiNi SMA were observed, and the effect of the current densities on surface morphology of Ti-O film were investigated.

The corrosion potential and anodic polarization curve of SMA deposited at 20mA/cm2 and 5mA/cm2 in hank's solution and Fuayama solution were respectively tested, in order to investigate the effect of current density on corrosion resistance of Ti-O film.
