Abstract
Ultrasound irradiation is an effective means of obtaining nanoparticles. Hydroxyapatite–zirconia (HA–ZrO2) synthesized by ultrasound irradiation was coated on Ti6Al7Nb implant alloy by electrophoretic deposition. Scanning electron microscopy (SEM) and energy dispersive X-ray spectroscopy (EDX) were used to evaluate the morphology and composition of HA–ZrO2 coatings. The electrochemical impedance spectroscopy (EIS) and potentiodynamic polarization curves were used to characterize the corrosion performance of HA–ZrO2 coated sample in simulated body fluid (pH 3.9) at 37 °C. The EIS interpretation was performed in two-layer model of the coated sample. It was found that the nanoparticles of HA–ZrO2 coated on Ti6Al7Nb alloy showed a good corrosion resistance after a short-time immersion in simulated body fluid (pH 3.9).
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