| About this Abstract |
| Meeting |
2025 TMS Annual Meeting & Exhibition
|
| Symposium
|
Advanced Biomaterials for Biomedical Implants
|
| Presentation Title |
Biofunctionalization of the Ti-25Ta-xNb Alloy System |
| Author(s) |
Carlos Roberto Grandini, Fernanda de Freitas Quadros, Celio Junior da Costa Fernandes, Pedro Akira Bazaglia Kuroda, Diego Rafael Nespeque Correa |
| On-Site Speaker (Planned) |
Carlos Roberto Grandini |
| Abstract Scope |
The biofunctionalization of surfaces, with the presence of pores, improves wear and corrosion resistance, in addition to assisting in the bioactivity and osseointegration of Ti alloys. In this study, Ti-25Ta-xNb alloys were submitted to the MAO process at different potentials. The results indicated that the surfaces treated by MAO at 200V and the Ti-25Ta-20Nb alloy at 250V showed high film adhesion to the substrate. The alloys treated at 300V and Ti-25Ta-20Nb at 200V and 300V indicate good film adhesion to the bulk. SEM measurements revealed that the Ti-25Ta-10Nb alloy, predominantly α” phase, has small and spherical pores, while the Ti-25Ta-20Nb alloy, predominantly β phase, has spherical pores and lamellar. The alloy with 30% Nb, exclusively β, exhibits only spherical pores. The variation in the potential applied during the MAO influenced the porosity of the surfaces, with the pore diameter increasing according to the potential. No cytotoxic effects were observed. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Biomaterials, Titanium, Surface Modification and Coatings |