Abstract:
The influence of potential on electrochemical behaviour of Ti6Al4Zr alloy under simulated physiological condition was
investigated by electrochemical impedance spectroscopy (EIS). The experimental results were compared with those obtained for
titanium Ti6Al4V alloy. All measurements were obtained in aerated artificial saliva at 25oC and at different potentials 0 mV
(SCE), 500 mV (SCE) and 1000 mV (SCE). Equivalent circuits (EC) were used to modeling EIS data, in order to characterize
samples surface and better understanding the effect of zirconium addition on the titanium alloy. The Ti6Al4Zr alloy appears to
posses? superior corrosion resistance than the Ti6Al4V alloy in artificial saliva.

Sorin Iacob Strugaru, Daniel Mareci, Ionuţ-Lucian Bistricianu, Corneliu Munteanu, Daniel Sutiman