| About this Abstract |
| Meeting |
2025 TMS Annual Meeting & Exhibition
|
| Symposium
|
Advanced Biomaterials for Biomedical Implants
|
| Presentation Title |
Tribo-Corrosion Properties of Beta-Type Ti-Nb-Ga Alloys for Antibacterial Implant Applications |
| Author(s) |
Mariana Calin, Ludovico Andrea Alberta, Adnan Akman, Benoit Ter-Ovanessian , Annett Gebert |
| On-Site Speaker (Planned) |
Mariana Calin |
| Abstract Scope |
Implant-related infections due to bacterial biofilm constitute a major clinical problem. For titanium alloys, biofilm formation can be inhibited by alloying the implant with antibacterial agents such as Ag, Cu, and Ga.
In this study we report on the corrosion and tribo-corrosion properties in physiological solution of (100-x)(Ti-45Nb)-xGa (x ≤ 8 wt%) alloys. Tribo-corrosion tests (OPC, anodic potentiostatic tests) were performed using a reciprocating pin-on-disk tribometer under constant load. Among the Ti-Nb alloys, the low modulus β-type 92(Ti-45Nb)-8Ga alloy displays the best combination of both corrosion and wear resistance, with a repassivation time constant of 17.3 s and spontaneous tendency to repassivate even during mechanical degradation. Content of Ga (III) ions released in the test solutions were found to be in very low amounts. Addition of Ga to Ti-45Nb resulted in improved corrosion resistance under mechanical loading.
Financial support through the EC (H2020 BIOREMIA-ITN, GA 861046) is gratefully acknowledged. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Titanium, Biomaterials, Characterization |