Titanium is a key biomedical material due its good biocompatibility,
mechanical properties and corrosion stability, but infections of the
implantation site still pose serious threat. One approach to prevent
infection is to improve antimicrobial ability of the coating material. Silver
doped hydroxyapatite (Ag/HAP) nanoparticles were synthesized by new modified
precipitation method. The synthesized powder was used for preparation of
Ag/HAP coating on titanium by electrophoretic deposition. The coating was
characterized in terms of phase composition and structure by Attenuated total
reflection Fourier transform infrared spectroscopy (ATR-FTIR) and X-ray
diffraction (XRD); surface morphology and chemical composition was assessed
using scanning electron microscopy (SEM) and energy dispersive spectroscopy
(EDS). Research focused on evaluation of the corrosion behaviour of Ag/HAP
coating in simulated body fluid (SBF) at 37 oC during prolonged immersion
time by electrochemical impedance spectroscopy (EIS). Silver doped HAP
coating provided good corrosion protection in SBF solution.
[Acknowledgements. This research was financed by the Ministry of Education,
Science and Technological Development of the Republic of Serbia, contracts
No. III 45019 and by National Sciences and Engineering Research Council of
Canada (NSERC). Dr Ana Jankovic was financed by the FP7 Nanotech FTM Grant
Agreement 245916]