Optimisation of micro-arc oxidation electrolyte for fabrication of antibacterial coating on titanium


Aydogan D. T. , Muhaffel F., Kilic M. M. , Acar O. K. , Cempura G., Baydoğan M., ...Daha Fazla

MATERIALS TECHNOLOGY, cilt.33, ss.119-126, 2018 (SCI İndekslerine Giren Dergi) identifier identifier

  • Cilt numarası: 33 Konu: 2
  • Basım Tarihi: 2018
  • Doi Numarası: 10.1080/10667857.2017.1391931
  • Dergi Adı: MATERIALS TECHNOLOGY
  • Sayfa Sayıları: ss.119-126

Özet

This study has been carried out to optimise the silver (Ag) content of the coating synthesised on commercially pure titanium (Cp-Ti, Grade 4) for biomedical applications by micro-arc oxidation (MAO) process. The MAO process has been conducted in electrolytes containing silver acetate (AgC2H3O2) at different concentrations between 0 and 0.002 mol L-1. When compared to the base electrolyte, coatings synthesised in >= 0.001 mol L-1 AgC2H3O2 added electrolytes exhibited an antibacterial efficiency of 99.8% against Staphylococcus aureus (S. aureus). Detailed examination revealed that the presence of 0.01 mol L-1 AgC2H3O2 in the electrolyte resulted in incorporation of 1.4 wt-% Ag into fabricated coating consisting mainly of outer hydroxyapatite (HA) and inner titanium oxide (TiO2) layers. In comparison to the Ag-free coating, 1.4 wt-% Ag in the coating lowered the proliferation of SAOS-2 cells, which still tended to grow at a relatively low rate with increasing culturing time.