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  • Ескіз
    Документ
    Features of medical implant passivation using anodic oxide films
    (Collegium Basilea & AMSI, 2016) Starikov, V. V.; Starikova, S. L.; Mamalis, A. G.; Lavrynenko, S. N.
    The passivation ability of metals from groups IV and V of the Periodic Table is considered. Anodic treatment is able to neutralize the increase of metal hardening when comminuting grains to nanometre sizes. The deposition of metal oxide film coatings on a cobalt–chromium alloy surface results in substantial passivation of its surface and prevents cobalt and chromium accumulation in bone tissues. The decrease of surface activity of titanium implants can be achieved both by cleaning the surface during vacuum annealing before oxidation and by the increase of the anodic oxide film thickness, which limits mass and charge transfer through the implant surface. Recommended titanium implant treatment regimens are vacuum annealing at 650 °C and anodic oxidation to attain an oxide thickness less or equal to 300 nm.
  • Ескіз
    Документ
    Diamond biocompatible coatings for medical implants
    (Collegium Basilea & AMSI, 2016) Starikov, V. V.; Starikova, S. L.; Mamalis, A. G.; Lavrynenko, S. N.
    New carbon (diamond-like) nanocomposite coatings deposited from a C60 ionic beam can be used as a wear-resistant protective coating for implants. It was found that these coatings enhance resistance to тelectrochemical corrosion processes due to a shift of the material’s electrode potential to a zone of positive values. They also promote a complex of reparative, adaptative and compensatory reorganization that accelerates the healing processes in the vicinity of the implant.