Enhancement of Corrosion Behaviour and Biocompatibility of Coated Ti-6Al-4V alloy using SOL-GEL Technique

Abstract

In the present study, Alumina/ Hydroxyapatite/ Graphene as the bioactive coating is deposited with the sol-gel method on the Ti-6Al-4V alloy to evaluate their effects on antibacterial, cytotoxicity, and corrosion resistance. The corrosion behavior of uncoated Ti alloy along with coated substrate was analyzed by Potentiodynamic (Tafel) polarization in simulated body fluid (SBF) solution kept at a temperature of 37 °C. The result of the test exposed that the composite coating provided superior barrier characteristics and accomplished better corrosion protection for Ti-6Al-4V substrates. The resultant coatings surface morphology was studied by Scanning Electron Microscopy (SEM).No antibacterial activity against human pathogens could be confirmed and demonstrated proved non-cytotoxicity when tested adjacent to healthy peripheral blood mononuclear cells (PBMC) that indicates the material has a high prospective for biomedical applications. This analysis resulted to facilitate the nanocomposite coatings can be proved as a potential applicant for succeeding bone implantations.