| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 4985659 | Surfaces and Interfaces | 2017 | 31 Pages |
Abstract
Functionalized graphene is a hydrophilic material that could be an important lubricating additive due to the unique chemical and crystallographic properties. Functionalized aged reduced graphene oxide (A-rGO) additives dispersed in polyethylene glycol (PEG200) significantly improved the lubrication properties of steel-steel contact which is promising for useful application. Aging in humid condition transformed the single phase oxygen functionalized reduced graphene oxide (rGO) into a diphase material where lattice spacing of graphene sheet increased and rGO coexist with the nanocrystalline graphite phase. The evidence of adsorbed graphite tribo-species in the wear track is observed by X-ray photoelectron spectroscopy (XPS) and micro Raman spectroscopy. This acts as a high strength boundary and low shear strength tribofilm for enhancing the antiwear and antifriction properties.
Keywords
Related Topics
Physical Sciences and Engineering
Chemical Engineering
Colloid and Surface Chemistry
Authors
Bhavana Gupta, Niranjan Kumar, Kozakov Alexey Titovich, Kolesnikov Vladimir Ivanovich, Sidashov Andrey Vyacheslavovich, Sitaram Dash,