Low friction and wear of polycaprolactone/epoxy coatings driven by solid-liquid phase change

IF 6.1 1区工程技术 Q1 ENGINEERING, MECHANICAL

Tribology International Pub Date : 2025-01-19 DOI:10.1016/j.triboint.2025.110550

Guojuan Liu , Weiming Niu , Yifan Yao , Yibing Fan , Hongwei Zhou , Xiaojun Xu , Hao Li , Minhao Zhu

引用次数: 0

Abstract

Solid-liquid phase change materials (solid-liquid PCMs) feature both easy maintenance of solid lubricating materials and low coefficient of friction (COF) as well as good heat dissipation of liquid lubricating materials. In this study, we investigated the lubrication performance of polycaprolactone (PCL), a member of PCMs, and epoxy composite coatings (PCL/epoxy) by adjusting friction-interface temperature through varying sliding speeds (2000 r/min (rpm), 500 rpm, and 100 rpm). We found that at 2000 rpm the PCL/EP composite coating shows a drastic reduction of COF by 50.6 % and wear rate by 93.1 %, compared to pure EP coating. The excellent tribological performance are attribute to the formation of liquid PCL. These findings provide new insights into addressing slow-release issues associated with liquid lubricants.

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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.