Abstract
Fretting damage is one of the factors leading to failure of orthopaedic implants. The present work studied the fretting behaviour of heat treated titanium in air and water vapour respectively. The tribological experiments were performed with a fretting tester under dry friction and lubrication conditions with the simulated body fluid (SBF). The worn surfaces of the specimens were analysed by scanning electron microscopy with X-ray energy dispersion spectroscope, confocal laser microscope and X-ray diffractometer. Heat treatments enhanced fretting wear resistance and decreased friction coefficients of titanium under dry friction and SBF lubrication conditions respectively. The effect of heat treatment in water vapour was superior to that in air. SBF as lubricant could decrease the wear and friction coefficients of non-heat treated and heat treated titanium.
This project is financially supported by the Chinese FANEDD (grant no. 200554) and NSFC (grant no. 50535050).