Corrosion behaviour of plasma sprayed HA-TiO2 coatings on Ti6Al4V substrate

Yusuf KAYALI1, Muhammet KARABAŞ2, Şükrü TALAŞ

Abstract


This study was performed to investigate the corrosion behaviour of plasma sprayed Hydroxyapatite (HA) and HA-TiO2 double layer coatings on Ti4Al6V substrates. The coatings were characterized by X-ray diffraction (XRD) and Scanning electron microscopy (SEM) attached with Energy-Dispersive X-Ray Spectroscopy (EDX). Tafel and Potentiodynamic techniques were used to assess the in-vitro corrosion behaviour of two coatings and un-coated Ti4Al6V substrate. HA coated Ti6Al4V samples showed a good corrosion resistance however uncoated Ti6Al4V, TiO2 and HAP on TiO2 coatings produced comparatively low corosion resistances.


Keywords


HVOF; Ti6Al4V; Hydroxyapatite; TiO2 coating

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References


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DOI: http://dx.doi.org/10.24294/cse.v0i0.850

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