Fretting corrosion behaviour of Ti-6Al-4V alloy in artificial saliva containing varying concentrations of fluoride ions

▶ Fluoride ions hinder instantaneous repassivation of damaged areas of fretted zone. ▶ Adhesive galling is observed both in presence and in absence of fluoride ions. ▶ Wear volume is higher at 190 ppm but lower at 570 and 1140 ppm of fluoride ions. ▶ Change in contact configuration reduced the wear rate at 1140 ppm of fluoride ions.