Corrosion and structure characterization of anodized Ti-6Al-7Nb alloy

Abstract EN

Electrochemical and structural properties of titanium implant materials with a nanotube surface treatment and heat treatment were examined.

Amorphous TiO2 nanotubes were grown homogeneously on phase of Ti-6Al-7Nb alloy.

Amorphous TiO2 nanotubes were partially crystallized to rutile by heat treatment at 8000C for 2 hrs.

The corrosion potential (Ecorr) of the annealed sample had value of -162.881mV due to the stable TiO2 crystal phase compared to the - 343.629 mV observed in the untreated sample.

At 0.5 V, where a passive layer had formed, the corrosion resistance of the annealed sample was approximately ten times that of the untreated sample.