Biological Performance of Ti-Ta-O Composite Coatings Prepared by Hydrothermal Method

Abstract

This study investigates the effect of hydrothermal treatment on the biological performance of Ta-doped Ti-Ta-O composite coatings. The results show that as the concentration of TaCl₅ in the hydrothermal reaction increased, significant changes occurred in the surface color and hydrophilicity of the samples, with Ta₃ exhibiting superhydrophilicity and greatly enhancing cell adhesion. Hydrothermal treatment successfully introduced Ta elements onto the titanium-based material surface, and the Ta content increased progressively with the concentration of TaCl₅. The treatment led to the formation of micro-nanostructures on the surface, significantly increasing surface area and enhancing osteoblast adhesion, thus promoting bone integration. Cellular experiments demonstrated that the Ta3 sample exhibited optimal performance in terms of cell adhesion, spreading, and activity. In conclusion, the hydrothermally treated Ta-doped coatings offer notable improvements in biocompatibility and osteogenic properties, showing promising potential for future applications.