Zichun Wang , Jingsi Wang , Ruoxuan Huang , Jiayuan Wang , Boshen Zhang , K. Grinkevych , Jiujun Xu
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Tribological performance of lubricant with high concentration graphene additive dispersed by ultrasonic technology
Poor dispersibility and easy agglomeration of graphene in lubricating oil restrict its wide applications. In this study, a high concentration of graphene was successfully dispersed in HVIH-5 base oil by using ultrasonic technology without a dispersant. The tribological properties of this lubricant were studied by a reciprocating tribo-tester. The friction force and wear were reduced by 47.2 % and 42.8 % by using the high-concentration graphene lubricant compared to that of using base oil, respectively. The excellent tribological properties of the high-concentration graphene lubricant was attributed to the formation of a carbon-based layer with an ordered structure on the wear scar, which prevents direct contact of friction pairs and enhances the anti-oxidation effect of the friction surface.
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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