Abstract
The purpose of this study was to investigate hydroxyapatite coatings containing Mn and Si on the oxidized Ti-6Al-4V alloy for dental applications. Dental implant fixture and Ti-6Al-4V ELI disk were used as substrates for plasma electrolytic oxidation (PEO) treatment. PEO treatment was performed at 280 V for 3 min in various solutions. The surface morphologies of the specimens after PEO treatment were observed with a field-emission scanning electron microscope, energy-dispersive X-ray spectroscopy, X-ray diffractometer, and Fourier transform infrared spectroscopy. The breakdown potential for pore formation depended on the added ions in electrolytes. Rough surface with micro-pores was formed after plasma discharge in the electrolytes containing Si and Mn ions. The surface morphologies of implant fixtures were covered with manganese-silicon compounds, as Mn concentration increased. From the XRD analysis, anatase peaks decreased, as Mn and Si contents increased. From the results of FT-IR analysis, Si-HA and Mn-HA was formed on the implant surface.
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