Corrosion Behaviour of Ti–6Al–4V Alloy as Dental Implant Containing Fluoride Ions

This work investigated the corrosion performance of Ti–15Mo alloy in NaCl (0.15 M) + NaF (different concentrations) and compared the protective capacity of this alloy and two other alloys (Ti–6Al–4V and CP-Ti) to ascertain their suitability for application in dental implanting. The Ti–6Al–4V, Ti–15Mo and CP-Ti alloys exhibited steady-state current densities of 6, 2 and 1μA/cm2, respectively, when investigated in NaCl (0.15 M) + NaF (0.03 M) at 200 mV (versus SCE). This result suggested desirable corrosion resistance of the three alloy samples in the potential range that could exist in the oral environment.