Effect of the coexistence of albumin and H₂O₂ on the corrosion of biomedical cobalt alloys in physiological saline.

ABSTRACT: The corrosion of Co-28Cr-6Mo and Co-35Ni-20Cr-10Mo, as biomedical alloys, has been investigated for effects of typical species (albumin and H₂O₂) in physiological saline, with their coexistence explored for the first time. Electrochemical and long term immersion tests were carried out. It was found that Co alloys were not sensitive to the presence of albumin alone, which slightly promoted anodic dissolution of Co-35Ni-20Cr-10Mo without noticeably affecting Co-28Cr-6Mo and facilitated oxide film dissolution on both alloys. H₂O₂ led to a clear drop in corrosion resistance, favouring metal release and surface oxide formation and inducing much thicker but less compact oxide films for both alloys. The coexistence of both species resulted in the worst

SUBMITTER: Xu W 

PROVIDER: S-EPMC9073266 | biostudies-literature | 2019 Oct

REPOSITORIES: biostudies-literature