About this Abstract |
| Meeting |
2026 TMS Annual Meeting & Exhibition
|
| Symposium
|
Tribology: Advances in Friction, Wear and Lubrication of Interfaces
|
| Presentation Title |
Shining light on the mechanochemistry of catalytic alloys and ionic liquids using in-situ methods |
| Author(s) |
Bunty Tomar, Foyez Ahmad, Vikas Paduri, Sharad Puri, Ali Kaan Kalkan, David McIlroy, Jun Qu, Ritesh Sachan, Pranjal Nautiyal |
| On-Site Speaker (Planned) |
Pranjal Nautiyal |
| Abstract Scope |
Mechanochemically active materials counteract friction and wear by forming protective, lubricious tribofilms under stress. However, since these reactions occur at buried interfaces, studying their mechanisms is challenging. To overcome this, we use in-situ methods to study tribofilm formation. This talk presents two case studies. First, we investigated a catalytic NiCoCr alloy that converts ambient hydrocarbons into tribofilms. Using in-situ atomic force microscopy, we measured tribofilm growth at single-asperity sliding contacts, which allowed us to determine the activation volume for the catalytic process. In the second study, we probed tribofilm formation by a phosphonium phosphate ionic liquid using in-situ optical interferometry. To advance lubricant development for electric vehicles, we quantified how electric fields influence tribofilm growth. Based on the results, we propose a kinetics model that incorporates electrical current into the Eyring framework for mechanochemical reactions. These insights will guide the design of new materials and lubricants for harsh environments. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Surface Modification and Coatings, Characterization, Nanotechnology |