In this study, hydroxyapatite, titania, and HA-TiO2 composite layers are deposited by suspension plasma spraying on titanium substrates and assessed by means of SEM and XRD analysis, Raman spectroscopy, and acoustic emission testing. The coatings exhibited dense microstructures with low porosity and good interfacial bond strength. The main phase in the HA and composite coatings was found to be similar to the peak of the feedstock powder. In the composite and titania coatings, besides rutile and anatase, a significant percentage of thermally stable Ti3O5 was observed, which is favorable for photocatalytic performance.

acoustic emission testing, hydroxyapatite-titania coatings, microstructure, phase composition, Raman spectroscopy, suspension plasma spraying
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Copyright © 2019 ASM International. All rights reserved.
2019
ASM International
Topics
Microstructure Bioactive ceramics Suspension plasma spray coating Interfacial bond strength Acoustic emission testing Raman spectroscopy
Issue Section:
Poster Session
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