Akademik Veri Yönetim Sistemi
MATERIALS AND CORROSION - WERKSTOFFE UND KORROSION, ss.1-13, 2025 (SCI-Expanded)
In this study, Hydroxyapatite (HA) modified HA-Ti composite coatings were applied to the surface of the Ti-6Al-4V (Ti64) alloy, which is crucial for biomedical applications, using the TIG cladding method. HA fraction caused a notable decrease in adhesion strength and ductility; however, the 5% HA composition maintained mechanical integrity while providing biological advantages. Surface contact angle measurements showed that HA addition made the surfaces more hydrophilic, with the lowest contact angle (~58°) observed in the 10%HA coating, which suggests improved interaction with biological fluids, cell adhesion, and protein adsorption. Electrochemical test results indicated that the 10% HA coatings exhibited the highest corrosion resistance and the most stable oxide film behavior. In immersion tests conducted in simulated body fluid (SBF), significant Ca-P deposition was observed on the 10% HA surfaces, supporting their high bioactivity potential. Overall, the results demonstrate that HA-reinforced Ti composite coatings produced through TIG welding are highly promising candidates for surface modification of biomedical implants, offering both structural and biological functionality.