Abstract
Cobalt-Chromium alloys possess outstanding corrosion resistance and wear resistance because of passive film of a few nanometers' thickness on their surfaces. In this study, we have clarified the damage accumulation mechanism of Co-Cr alloys under the simultaneous reaction of corrosion and wear in sodium chloride solution. We developed a new tribocorrosion system. A corrosion wear characteristic of these alloys was evaluated by the anodic polarization test, static polarization test, and natural potential test under simultaneous wear damage. Large corrosion pits and changes in wear form were observed on their surfaces.
