corrosion studies on the hydroxyapatite-gelatin-mono layered graphene oxide nanocomposite coating on ss316l

Stainless steel 316l (ss316l) is a metallic implant for bio-applications due to its excellent mechanical properties, corrosion resistance and affordability. however, its surface needs to be improved to imply biocompatibility, bioactivity, and antimicrobic functions. accordingly, ha based nanocomposite (ha-cs-go) deposited on the ss316l sheets by electrophoretic deposition. nanoparticle ha was synthesized by sol-gel. the coating was applied at 80v for 1min. to study the products and coating, various analyses were employed; xrd, sem, ftir, and electrochemical polarization and eis analysis in sbf. the results proved ha successful synthesis. the nanocomposite coating (thickness ~12.7µm) was properly deposited on ss316l. the corrosion resistance improved by coating; the current density decreased from 7.6 to 1.4µa.cm-2. the mechanism of corrosion was evaluated by eis data. the corresponding equivalent circuit was proposed and the dielectric capacitor, and resistance values were estimated.