Fretting corrosion in biomedical implants
Résumé
Fretting corrosion is a phenomenon which occurs when two materials are submitted to friction under a slight relative motion. This chapter will focus on fretting corrosion degradations in the field of implants. After describing the most significant implants submitted to fretting, fretting corrosion is defined. Laboratory investigations highlight particular degradation mechanisms such as the key role of passive film stability, crevice corrosion, etc. Free corrosion and applied potentials conditions are investigated for understanding tribocorrosion. Finally, the role of proteins in tribological behavior is investigated, since the fretting corrosion degradations of biomaterials such as implants occur in a biological environment and proteins play a role in the tribocorrosion processes.