| About this Abstract |
| Meeting |
2025 TMS Annual Meeting & Exhibition
|
| Symposium
|
Advances in Surface Engineering VII
|
| Presentation Title |
Graphene Nanocomposite Films on Carbon-Coated Metals: A Path to Macroscale Superlubricity |
| Author(s) |
Tabiri Kwayie Asumadu, Winston Wole Soboyejo, Nima Rahbar, Desmond Klenam, Mobin Vandadi, Kwadwo Mensah-Darkwa, Samuel Kwofie, Emmanuel Gikunoo |
| On-Site Speaker (Planned) |
Tabiri Kwayie Asumadu |
| Abstract Scope |
In this work, graphene-like coatings with multiwalled graphene signatures were deposited on Ni, Ti, Ti-6Al-4V and AISI 1045 steel. The method used for the deposition process was a novel low-cost high temperature biowaste treatment at 900oC. Wear behavior using ball-on-disk configuration on the bulk coated metallic substrates were investigated. The results showed sustained ultra-low friction and wear on the bulk metallic surfaces with the lowest coefficient of friction value of 0.0028. This was attributed to the coated carbon nano crystals deforming to graphene nano composite films, providing the needed incommensurability and multiple microcontact points interactions for frictionless conditions. The wear rates of the treated substrates were drastically reduced. The underlying tribo-oxidation and stress induced tribo-transformation controlled interactions and mechanisms were elucidated, before exploring the implications of the current results for the design of robust and next generation 2D and 3D carbon-based coatings with frictionless property at the macroscale. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Surface Modification and Coatings, Thin Films and Interfaces, Nanotechnology |