Abstract
The plasma electrolytic oxidation (PEO) film on Ti-39Nb-6Zr alloy was successfully prepared in KOH solution. The electrochemical corrosion and wear behaviors of bare and coated alloys in phosphate buffer saline (PBS) were investigated. The biocompatibility was evaluated by culturing osteoblast cells on the bare and coated alloys. The results showed that corrosion resistance and wear resistance of Ti-39Nb-6Zr alloy in PBS solution were significantly improved after PEO surface treatment. In addition, the PEO film had higher zeta potential at pH 7.4, which resulted in a higher protein adsorption amount. The PEO film promoted osteoblast cell proliferation and differentiation into the polygonal shape. The PEO film on Ti-39Nb-6Zr alloy showed excellent corrosion resistance, wear resistance and osteogenic properties.
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