Indepth analysis on the kinetics and composition of a repassivated CoCrMo oxide film

What is it about?

The focus of this paper is to fully determine the interactions of the surface/environment of CoCrMo alloys exposed to a protein-containing environment during electrochemical repassivation and its subsequent effect on the composition of the resulting oxide film formed, which has been missing from the literature

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Why is it important?

Over the last few years, issues have arisen with metal-on-metal devices, as over time metal ions are released into the body and if they are absorbed by erythrocytes it can lead to genotoxicity within the patient. Our research shows that in the presence of BSA, more molybdenum ions are extracted into the solution leading the reformed passive film to increase in porosity, thus becoming less corrosion resistant.