About this Abstract |
| Meeting |
2027 TMS Annual Meeting & Exhibition
|
| Symposium
|
Advanced Biomaterials and Implants
|
| Presentation Title |
Infection Resistant Titanium-Tantalum-Copper Alloys for Dental and Orthopedic Applications |
| Author(s) |
Michael Myers, Satyajit Mojumder, Susmita Bose, Amit Bandyopadhyay |
| On-Site Speaker (Planned) |
Michael Myers |
| Abstract Scope |
Additively manufactured titanium alloys with intrinsic antibacterial properties have the potential to improve the performance and longevity of biomedical implants. In this study, Ti3Al2V10Ta5Cu (Ti32Ta-5Cu) and Ti3Al2V10Ta7Cu (Ti32Ta-7Cu) alloys were fabricated by laser-directed energy deposition (L-DED) and compared with Ti6Al4V (Ti64). Microstructural characterization revealed substantial grain refinement with increasing copper content, reducing α-lath length from 40 µm in Ti64 to 5 µm in Ti32Ta-7Cu and indicating possible Ti₂Cu formation. The Ti32Ta-7Cu alloy exhibited a 22% increase in compressive yield strength and a 13% increase in hardness compared with Ti64 while maintaining a similar elastic modulus. Antibacterial testing demonstrated up to 98% and 93% reductions in Staphylococcus aureus and Pseudomonas aeruginosa viability, respectively, with copper ion release remaining below 0.5 ppm after 12 weeks. These findings demonstrate that Ti-Ta-Cu alloys produced by L-DED can simultaneously provide enhanced mechanical performance and intrinsic antibacterial activity, making them promising candidates for next-generation biomedical implants. |
| Proceedings Inclusion? |
Planned: |