Fabrication of multilayer graphene sheets modified diatom biosilica microcapsules for enhanced frictional and mechanical properties

IF 6.1 1区工程技术 Q1 ENGINEERING, MECHANICAL

Tribology International Pub Date : 2025-03-03 DOI:10.1016/j.triboint.2025.110621

Mohan Li , Shupei Liu , Xinfang Zhang , Lichao Wan , Ming Huang , Xiujie Jiang , Hui Xiong , Congshu Huang , Hong Gao , Weikang Zhao , Yuxin Zhang

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引用次数: 0

Abstract

Graphene has demonstrated significant potential in the fields of lubrication and wear resistance, owing to its unique structure and exceptional properties. However, the tendency of graphene sheets to agglomerate limits its broader application. Herein, we report a novel multilayer graphene sheet modified diatomite (DE) microcapsule (Graphene@DE). After further surface modification (Graphene@DE-F), the microcapsules can significantly improve tribological and mechanical properties. Tribological tests showed that uniformly dispersed Graphene@DE-F microcapsules have significant anti-friction and anti-wear performance. Specifically, the coefficient of friction (COF) decreased by 86.4 %, wear rate decreased by 64.7 %, mass loss decreased by 42.2 % and thickness loss decreased by 30.7 %. Furthermore, the tensile properties and basic mechanical properties were also improved. The elastic modulus increased by 5.3 %, tensile strength increased by 7.3 %, Young's modulus increased by 13.6 %, and hardness increased by 41.7 %.

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多层石墨烯片改性硅藻生物硅微胶囊的制备及其摩擦和机械性能的增强

石墨烯由于其独特的结构和优异的性能，在润滑和耐磨领域显示出巨大的潜力。然而，石墨烯片的结块倾向限制了其更广泛的应用。在此，我们报道了一种新型的多层石墨烯片改性硅藻土（DE）微胶囊（Graphene@DE）。经过进一步的表面改性（Graphene@DE-F），微胶囊可以显著改善摩擦学和力学性能。摩擦学试验表明，均匀分散的Graphene@DE-F微胶囊具有显著的减摩抗磨性能。其中，摩擦系数（COF）降低了86.4 %，磨损率降低了64.7 %，质量损失降低了42.2% %，厚度损失降低了30.7 %。拉伸性能和基本力学性能也得到改善。弹性模量提高了5.3 %，抗拉强度提高了7.3 %，杨氏模量提高了13.6 %，硬度提高了41.7 %。

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

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.