Abstract
Friction plays a major role in contributing to the global energy consumptions and reducing it would bring about major economic and environmental advantages. Organic friction modifiers are cost-effective and environmentally friendly additives which are included in the lubricant packages to improve performances. Their friction-reducing properties are connected to their adsorption state on steel surfaces. This study applies Infrared Reflection Absorption Spectroscopy (IRRAS) to probe the oleic acid tribofilm on microscopic areas of the sample (micro-IRRAS). The recorded spectra are interpreted by density functional theory (DFT) calculations and provide useful information about the effect of the tribological phenomena on the adsorption state and molecular orientation of the oleic acid friction modifier. The oleic acid molecules adsorb on the surface forming both monodentate and bridging configurations on the iron atoms. IRRAS data show that under the effect of friction the molecules tilt towards the steel surface.
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Disclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.