Improving tribological performance of electrified steel interfaces in e-mobility systems using ash-sulfur-less oil additives based on amine salts-phosphoric esters
Mohamed Kamal Ahmed Ali , Yuchen Sun , Chaoyang Zhang , Qiangliang Yu , Chen Zhao , Feng Zhou , Weimin Liu
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Abstract
This study introduces the formulation of an ash-sulfur-less lubricant that is designed to form an antiwear/insulating tribolayer on electrified steel surfaces. The proposed oil formulation utilizes amine salts of aliphatic phosphoric acid esters (AW-6110) in poly-α-olefin (PAO6) oil. The study aims to find a solution to address tribological issues resulting from electrification effects and the presence of sulfur in e-mobility oils. An SRV-IV tribometer evaluated the tribological performance under various conditions. Notably, the AW-6110-formulated oil (1.5-AW oil) exhibited superior performance under 9 A current, reducing the friction coefficient by 18 % and the disc wear volume by 90 % compared to the commercial oil used in electric vehicles. This enhancement is attributed to its exceptional ability to form a durable antiwear/insulating tribolayer.
期刊介绍：
Tribology is the science of rubbing surfaces and contributes to every facet of our everyday life, from live cell friction to engine lubrication and seismology. As such tribology is truly multidisciplinary and this extraordinary breadth of scientific interest is reflected in the scope of Tribology International.
Tribology International seeks to publish original research papers of the highest scientific quality to provide an archival resource for scientists from all backgrounds. Written contributions are invited reporting experimental and modelling studies both in established areas of tribology and emerging fields. Scientific topics include the physics or chemistry of tribo-surfaces, bio-tribology, surface engineering and materials, contact mechanics, nano-tribology, lubricants and hydrodynamic lubrication.
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