Lubrication performance of 5CB liquid crystal combined with different wear-resistant coatings on friction surface

IF 6.1 1区 工程技术 Q1 ENGINEERING, MECHANICAL Tribology International Pub Date : 2025-04-01 Epub Date: 2024-12-18 DOI:10.1016/j.triboint.2024.110469
Qihang Cui , Jingsi Wang , Jiayuan Wang , Chengdi Li , Yan Shen , Pay Jun Liew , Jiujun Xu
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Abstract

The tribological behaviors of chromium-based ceramic composite coating (CCC) and diamond-like carbon coating (DLC) are investigated by reciprocating sliding experiments, respectively, under lubrication conditions with and without 5CB liquid crystal additives. The addition of 5CB significantly improves the lubrication performance and protects the coatings, which is attributed to the formation of a thin lubricating film on the friction surface by 5CB molecules. The reduction in friction and wear of the CCC friction pair is more obvious, implying that the formation of the lubricating film is affected by the coating. These findings suggest a great potential for the use of liquid crystal lubricant additive in combination with solid wear-resistant coatings, which is helpful for the development of high-performance lubrication systems.
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5CB液晶结合摩擦面不同耐磨涂层的润滑性能
通过往复滑动实验研究了铬基陶瓷复合涂层(CCC)和类金刚石涂层(DLC)在添加和不添加5CB液晶添加剂的润滑条件下的摩擦学行为。5CB的加入显著提高了润滑性能,保护了涂层,这是由于5CB分子在摩擦表面形成了一层薄薄的润滑膜。CCC摩擦副的摩擦磨损降低更为明显,说明润滑膜的形成受到涂层的影响。这些研究结果表明,液晶润滑添加剂与固体耐磨涂层结合使用具有很大的潜力,有助于高性能润滑系统的开发。
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来源期刊
Tribology International
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.
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