About this Abstract |
| Meeting |
MS&T25: Materials Science & Technology
|
| Symposium
|
Advanced Coatings for Wear and Corrosion Protection
|
| Presentation Title |
Tribocorrosion Performance of TiAlN and AlTiN Coatings on Ti6Al4V Alloy for Biomedical Applications |
| Author(s) |
Thiago de Lima Gontarski, Bruno Pereira, Ricardo Diego Torres, Paulo Soares |
| On-Site Speaker (Planned) |
Thiago de Lima Gontarski |
| Abstract Scope |
Ti6Al4V alloy is widely used in biomedical, aerospace, and automotive applications due to its excellent strength-to-weight ratio, corrosion resistance, and biocompatibility. However, its limited performance under aggressive environments demands enhanced surface protection. This study investigates the influence of the Ti/Al ratio in TiAlN (FUTURA Nano®) and AlTiN (LATUMA®) coatings on the tribocorrosion resistance of Ti6Al4V. Coatings were deposited via cathodic arc physical vapor deposition and characterized using SEM, EDS, and XRD. Tribological tests were conducted using a ball-on-plate reciprocating setup. Corrosion behavior was assessed through potentiodynamic polarization in both 3.5% NaCl solution and simulated saliva. Results show that both coatings improve corrosion resistance. AlTiN exhibited a more noble corrosion potential, while TiAlN presented higher corrosion current density. Tribocorrosion tests in artificial saliva confirmed the protective nature of the coatings under combined mechanical and electrochemical stresses. These findings support the potential use of the coatings in biomedical applications requiring enhanced durability. |