| Abstract Scope |
High-entropy alloys (HEAs) have emerged as promising materials for advanced engineering applications due to their superior mechanical properties. To assess the suitability of a ball-milled high-entropy MgTiCuZrNb alloy (HEA) for applications where wear and corrosion occur simultaneously, this study examines the alloy's tribo-corrosion behavior at various temperatures using a reciprocating set-up. Anodic polarization during sliding and open-circuit potential (OCP), two electrochemical characteristics, were linked to wear volume and friction behavior. According to the results, the alloy reduces the corrosion rate by maintaining a protective mixed-oxide coating at normal temperatures, which is dominated by oxides rich in Ti, Zr, and Nb. High temperatures cause Mg- and Cu-oxides to become unstable, thereby increasing wear and strengthening the wear-corrosion synergy. Temperature-dependent changes in oxide chemistry and damage morphology are confirmed by surface analysis. All things considered, the MgTiCuZrNb HEA shows enhanced resistance to tribo-corrosion at both room temperature and high temperatures. |