Advancements in Modelling the Tribocorrosion Current

Tribocorrosion in passive metals involves a complex and interactive mechanism between mechanical and electrochemical actions at a rubbing contact in a corrosive environment. The mechanical wear mechanism disrupts the passive film on the metal surface; and instantly, the metal repassivates and dissolves in the corrosive environment. This surface damage failure can occur in various components such as marine structures and medical implants which can force significant downtime and repair costs. In this article, historical advancement in the well-known theories and models which have been developed for passivation and tribocorrosion current (as a measure for wear-accelerated corrosion) is presented and discussed. The strengths and limitations associated with the models are reviewed to generate an overall picture of the progress in the field. The links between different models are also discussed and finally, some possible directions for future research are suggested. In this article, advancements in modelling the passivation phenomenon in metals, and tribocorrosion current are reviewed and discussed. A number of well-known models together with their strengths and limitations are presented. Under various tribocorrosion circumstances, the models are juxtaposed to highlight their links and similarities from both physical and mathematical standpoints. Future research directions in this area are also suggested. image