Fabrication and tribological mechanism of grease-containing self-lubricating composite epoxy coatings

IF 6.1 1区工程技术 Q1 ENGINEERING, MECHANICAL

Tribology International Pub Date : 2025-04-18 DOI:10.1016/j.triboint.2025.110734

Huixian Yang , Xiaoqiang Fan , Zhongpan Zhang , Xinrui Li , Minhao Zhu

引用次数: 0

Abstract

Epoxy resin (EP) exhibits poor tribological performance when used as a friction pair. In this study, lithium composite grease (LCG) was dispersed in EP using ethyl acetate as a “booster” to prepare composite coatings containing semi-solid grease (LCG/EP). X-ray computed tomography imaging confirmed the uniform distribution of LCG within the EP. The friction coefficient dropped from 0.65 to 0.066, and the wear rate decreased by 95.3 % with the introduction of 10 wt% LCG. The superior tribological performance of LCG/EP originates from the oil film formation on the friction surface. Moreover, the lubricating state from EP to LCG/EP was examined using Hertz contact theory. This work provides potentially effective support for the design of high-efficiency self-lubricating bearings.

查看原文本刊更多论文

含脂自润滑环氧复合涂层的制备及摩擦学机理研究

环氧树脂（EP）用作摩擦副时摩擦学性能较差。在这项研究中，使用乙酸乙酯作为 "增效剂"，将锂复合润滑脂（LCG）分散在环氧树脂中，制备出含有半固体润滑脂的复合涂层（LCG/EP）。X 射线计算机断层扫描成像证实了 LCG 在 EP 中的均匀分布。引入 10 wt% 的 LCG 后，摩擦系数从 0.65 降至 0.066，磨损率降低了 95.3%。LCG/EP 的优异摩擦学性能源于摩擦表面油膜的形成。此外，还利用赫兹接触理论研究了从 EP 到 LCG/EP 的润滑状态。这项研究为高效自润滑轴承的设计提供了潜在的有效支持。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

求助全文

约1分钟内获得全文求助全文

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.