Superdispersed spherical fullerenol and lamellar graphene oxide synergize to enhance the antiwear properties of water-based lubricants: Mathematical model and mechanism investigation

IF 5.3 1区工程技术 Q1 ENGINEERING, MECHANICAL

Wear Pub Date : 2024-07-03 DOI:10.1016/j.wear.2024.205481

Bo Wu , Liangbin Wu , Chuan Li , Ziji Yuan , Qian Wu , Changge Wang , Ling Xu , Ye Qin , Xianguo Hu , Chuanrun Li

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Abstract

The development of high-performance water-based lubricating additives with excellent properties has been the focus of research recently. Herein, carbon-based nanomaterials made of spherical fullerenol and lamellar graphene oxide (GO) were explored as water-based lubricating additives to enhance tribological properties via the response surface method systematically. The antiwear mechanisms of the carbon-based nanomaterials were revealed through simultaneous wear surface characterizations and molecular dynamics simulations. Results showed that the spherical fullerenol and lamellar GO had superdispersion stability in the water-based lubricants. Fullerenol and GO could play a superior synergistic role to considerably enhance the antiwear properties of the water-based lubricants. Particularly, the wear rate decreased by almost 93 % when the water-based lubricant was supplemented with fullerenol and GO (0.1 wt% each) at the load of 1.5 N and sliding speed of 30 mm/s. The antiwear mechanisms indicated that an excellent antiwear effect was produced by the stable tribofilms containing GO and fullerenol, which combined with hydration layers synergistically exerting a bearing capacity.

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超分散球形富勒烯醇与片状氧化石墨烯协同增强水基润滑剂的抗磨损性能：数学模型与机理研究

开发性能优异的高性能水基润滑添加剂是近年来的研究重点。本文通过响应面法系统地探讨了球状富勒烯醇和片状氧化石墨烯（GO）组成的碳基纳米材料作为水基润滑添加剂增强摩擦学性能的问题。通过同时进行磨损表面表征和分子动力学模拟，揭示了碳基纳米材料的抗磨损机理。结果表明，球形富勒烯醇和片状 GO 在水基润滑剂中具有超分散稳定性。富勒烯醇和 GO 可发挥卓越的协同作用，大大提高水基润滑剂的抗磨损性能。特别是在负荷为 1.5 N、滑动速度为 30 mm/s 的条件下，在水基润滑剂中添加富勒烯醇和 GO（各 0.1 wt%）后，磨损率降低了近 93%。抗磨损机理表明，含有 GO 和富勒烯醇的稳定三膜产生了极佳的抗磨损效果，它们与水化层相结合，协同发挥了承载能力。

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

Wear 工程技术-材料科学：综合

CiteScore

8.80

自引率

8.00%

发文量

280

审稿时长

47 days

期刊介绍： Wear journal is dedicated to the advancement of basic and applied knowledge concerning the nature of wear of materials. Broadly, topics of interest range from development of fundamental understanding of the mechanisms of wear to innovative solutions to practical engineering problems. Authors of experimental studies are expected to comment on the repeatability of the data, and whenever possible, conduct multiple measurements under similar testing conditions. Further, Wear embraces the highest standards of professional ethics, and the detection of matching content, either in written or graphical form, from other publications by the current authors or by others, may result in rejection.