About this Abstract |
| Meeting |
2026 TMS Annual Meeting & Exhibition
|
| Symposium
|
Tribology: Advances in Friction, Wear and Lubrication of Interfaces
|
| Presentation Title |
Base Oil Tribology on Electrified Iron Interfaces - Experimental and Atomistic Modeling Study |
| Author(s) |
Veerendra Naralasetti, Aravind Krishnamoorthy, Ali Erdemir |
| On-Site Speaker (Planned) |
Veerendra Naralasetti |
| Abstract Scope |
Understanding the electrified tribological behavior of lubricants is critical for optimizing the design of advanced materials in electric vehicle (EV) drivelines and enhancing the service life of tribological components. This study explores the influence of currents on base-oil/steel interfaces. Ball-on-disc rotating tribometer tests were conducted on polyalphaolefin (PAO) and group-3 base oils under increasing direct current (DC) levels (0 A, 0.5 A, and 3 A). The results revealed a unique trend: wear loss increased to 0.5 A but decreased at 3 A across all tested base oils. Molecular Dynamic (MD) simulations were performed using a specially parameterized ReaxFF force field to predict tribological performance and surface reactions. Reactive MD simulations of PAO-type structures on naturally oxidized iron surfaces reveal the presence of oxides and carbides that contribute to wear, consistent with experimental observations. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Thin Films and Interfaces, Computational Materials Science & Engineering, Modeling and Simulation |