Experimental study on ZDDP tribofilm formation in grease lubricated rolling/sliding contacts

IF 6.1 1区工程技术 Q1 ENGINEERING, MECHANICAL

Tribology International Pub Date : 2025-02-09 DOI:10.1016/j.triboint.2025.110594

Rui Yu , Haichao Liu , Qingmiao Sun , Wenjing Lou , Shengmao Zhang , Xiaobo Wang , Yan Zhao

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引用次数: 0

Abstract

The tribofilm formation mechanisms of Zinc dialkyldithiophosphate (ZDDP) anti-wear additives have been extensively studied in oil lubrication. However, they are rarely reported in grease lubrication. In this study, the Mini Traction Machine (MTM) equipped with the Spacer Layer Interferometry iMaging (SLIM) technique is used to monitor the formation of ZDDP tribofilms in situ in Lithium-based grease- and its corresponding base oil- and bled oil- lubricated rolling/sliding contacts at low speeds. The results indicate that, compared to oil lubrication, the thickener deposited films hinder the formation of ZDDP tribofilms through reducing the interfacial friction in grease lubrication under moderate lubrication conditions. Among various operating conditions and ZDDP concentrations, the slide-to-roll ratio (SRR) dominates the formation of the ZDDP tribofilms by removing the grease thickener deposited films. By further extending to severe operating conditions in terms of load, temperature, SRR, and ZDDP concentration, the growing process of tribofilms have been analyzed for low-speed grease lubrication.

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油脂润滑的滚动/滑动触头中 ZDDP 三膜形成的实验研究

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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.