Abstract
To improve the surface characteristics of Ti-6Al-4V dental implants and the binding between the bone and implant surface, biocompatible oxide films were formed by plasma electrolytic oxidation (PEO). The PEO treatment was performed using electrolyte solutions containing Ca (calcium acetate monohydrate), P(calcium glycerophosphate), Mn (manganese(II) acetate tetrahydrate), and Si (sodium metasilicate nonahydrate), which are the major constituents of bone, for 3 min at 280 V. The morphology and crystalline phase of the PEO-treated surfaces were characterized using field-emission scanning electron microscopy, energy-dispersive X-ray spectrometry, X-ray diffraction, and Fourier transform infrared spectroscopy. All the obtained PEO-treated samples exhibited a morphology comprising porous structures. Oval and irregular pore structures were observed as the Mn content increased. As the Si content increased, the areas occupied by the pores increased. When both, Si and Mn were used for the PEO treatment, the number of nano- to micro-sized pores gradually decreased with the increasing ratios of the constituents.
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