The bio-functionality and corrosion resistance of plasma sprayed CP-Ti and CP-Ti/bioglass coatings were studied. The bio-functionality of the coatings were evaluated using simulated body fluid (SBF) immersion testing. After four weeks of immersion the surface chemistry of the coatings were examined using energy dispersive spectrometry (EDS) elemental analysis and X-ray diffraction (XRD). The corrosion resistance of the coatings were evaluated by measuring the mass change following SBF immersion. After four weeks of immersion in SBF the Ca content on the CP-Ti/bioglass coatings increased from 4 to 16 wt. % while no noticeable increase in Ca was observed on CP-Ti coatings. HA formation was observed on both coatings, although the relative intensity of HA on the XRD spectrum was higher for CP-Ti/bioglass coatings. The results suggest that the addition of bioglass enhances bio-activity and promotes HA formation. It was found that CP-Ti experienced a mass gain while CP-Ti/bioglass underwent a mass loss following SBF immersion. The mass loss of CP-Ti/bioglass is likely due to the dissolution of calcium and phosphate.

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Conference International Thermal Spray Conference and Exposition, ITSC 2016
Bsat, S. (S.), De Snoo, B. (B.), & Huang, X. (2016). Corrosion resistance and apatite forming ability of plasma sprayed CP-Ti/Bioglass composite coating. In Proceedings of the International Thermal Spray Conference (pp. 836–839).