Lubrication for macroscopic friction pairs with single-layer graphene coating

IF 3.5 2区物理与天体物理 Q2 PHYSICS, APPLIED

Applied Physics Letters Pub Date : 2025-01-14 DOI:10.1063/5.0242763

Qi Yang, Qiancheng Ren, Jiayuan Fang, Shuyue Wu, Fangqian Han, Pei Zhao

引用次数: 0

Abstract

With its strong mechanical properties, graphene has shown potential in applications for reducing friction and wear, but the underlying mechanisms for its macroscopic lubrication remain relatively unexplored. Here, we systematically study the lubrication effect of chemical vapor deposition graphene coated on the surfaces of macroscopic friction pairs made of different materials. Our findings reveal an apparent lubrication by single-layer graphene coating, as well as correlation between the COF and the brittleness of the substrate. Through a comprehensive characterization using Raman spectroscopy, we propose a protective mechanism by which graphene can effectively dissipate the resulting shear stress generated during friction and delay the wear generation until the graphene layer fails and the bare material surface starts to rub directly, which is confirmed by finite element analysis simulation. We believe our results can provide important support for the practical application of graphene coatings in lubrication for macroscopic friction pairs in industrial equipment.

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用单层石墨烯涂层润滑宏观摩擦副

由于其强大的机械性能，石墨烯在减少摩擦和磨损方面显示出潜在的应用潜力，但其宏观润滑的潜在机制仍然相对未被探索。本文系统地研究了化学气相沉积石墨烯在不同材料制成的宏观摩擦副表面的润滑效果。我们的研究结果揭示了单层石墨烯涂层的明显润滑作用，以及COF与基体脆性之间的相关性。通过拉曼光谱的综合表征，我们提出了一种保护机制，石墨烯可以有效地耗散摩擦过程中产生的剪切应力，延缓磨损的产生，直到石墨烯层失效，裸露的材料表面开始直接摩擦，并通过有限元分析模拟证实了这一点。我们相信我们的研究结果可以为石墨烯涂层在工业设备宏观摩擦副润滑中的实际应用提供重要支持。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Applied Physics Letters 物理-物理：应用

CiteScore

6.40

自引率

10.00%

发文量

1821

审稿时长

1.6 months

期刊介绍： Applied Physics Letters (APL) features concise, up-to-date reports on significant new findings in applied physics. Emphasizing rapid dissemination of key data and new physical insights, APL offers prompt publication of new experimental and theoretical papers reporting applications of physics phenomena to all branches of science, engineering, and modern technology. In addition to regular articles, the journal also publishes invited Fast Track, Perspectives, and in-depth Editorials which report on cutting-edge areas in applied physics. APL Perspectives are forward-looking invited letters which highlight recent developments or discoveries. Emphasis is placed on very recent developments, potentially disruptive technologies, open questions and possible solutions. They also include a mini-roadmap detailing where the community should direct efforts in order for the phenomena to be viable for application and the challenges associated with meeting that performance threshold. Perspectives are characterized by personal viewpoints and opinions of recognized experts in the field. Fast Track articles are invited original research articles that report results that are particularly novel and important or provide a significant advancement in an emerging field. Because of the urgency and scientific importance of the work, the peer review process is accelerated. If, during the review process, it becomes apparent that the paper does not meet the Fast Track criterion, it is returned to a normal track.