Tribological performance of lubricant with high concentration graphene additive dispersed by ultrasonic technology

IF 6.1 1区工程技术 Q1 ENGINEERING, MECHANICAL

Tribology International Pub Date : 2024-10-24 DOI:10.1016/j.triboint.2024.110354

Zichun Wang , Jingsi Wang , Ruoxuan Huang , Jiayuan Wang , Boshen Zhang , K. Grinkevych , Jiujun Xu

引用次数: 0

Abstract

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.

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采用超声波技术分散高浓度石墨烯添加剂的润滑剂的摩擦学性能

石墨烯在润滑油中的分散性差且容易团聚，这限制了它的广泛应用。本研究采用超声波技术，在不使用分散剂的情况下将高浓度石墨烯成功分散在 HVIH-5 基础油中。通过往复式摩擦试验机研究了这种润滑剂的摩擦学特性。与使用基础油相比，高浓度石墨烯润滑剂的摩擦力和磨损分别降低了 47.2% 和 42.8%。高浓度石墨烯润滑剂之所以具有优异的摩擦学特性，是因为在磨损痕上形成了具有有序结构的碳基层，从而防止了摩擦对的直接接触，增强了摩擦表面的抗氧化效果。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Tribology International 工程技术-工程：机械

CiteScore

10.10

自引率

16.10%

发文量

627

审稿时长

35 days

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.