氧化石墨烯粘合层使原始石墨烯的宏观摩擦学应用成为可能

IF 6.3 1区 工程技术 Q1 ENGINEERING, MECHANICAL
Mingi Choi, Ivan V Vlassiouk, Won-Seok Kim, Jeong Han Kim, Anirudha V Sumant, Ji-Woong Jang, Junho Suh, Young-Jun Jang, Songkil Kim
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引用次数: 0

摘要

在最近的二维纳米材料固体润滑剂的研究中,耐久性的重要性已经出现在实际工程规模的应用中。为了实现这一目标,传递层的形成对于防止机械系统的磨损至关重要。然而,由于化学惰性,原始石墨烯(PG)诱导材料转移一直是一个挑战。在本研究中,我们提出了一种易于加工的策略,以促进PG的大量材料转移到对应的接触材料上。我们利用氧化石墨烯(GO)作为PG膜与对应接触面之间的粘合层,以实现优越的摩擦学性能。氧化石墨烯官能团的高相互作用能有助于氧化石墨烯的材料转移,通过对对应接触面和磨损轨迹的系统分析揭示了这一点。巨大的固体转移层不仅通过致密化和氧化使转移层与底层膜之间形成耐磨的接触界面,而且降低了表面相互作用能,最终使耐久性得到显著提高。
本文章由计算机程序翻译,如有差异,请以英文原文为准。

Graphene oxide gluing layer enabling macroscale tribology applications of pristine graphene

Graphene oxide gluing layer enabling macroscale tribology applications of pristine graphene

In recent studies of two-dimensional nanomaterials-based solid lubricants, the importance of durability has been emerging for real engineering-scale applications. To achieve this, a transfer layer formation is essential to prevent the wear of the mechanical systems. However, it has been challenging for pristine graphene (PG) to induce a material transfer due to chemical inertness. In this study, we suggest an easy-to-process strategy to promote the huge material transfer of the PG onto the counterpart contacting material. We utilized graphene oxide (GO) as a gluing layer between the PG film and the counterpart contact surface for realizing the superior tribological performance. The high interaction energy of the GO from its functional groups makes a contribution to the material transfer of PG, which is unveiled by systematic analysis of the counterpart contact surface and the wear track. The huge solid transfer layer not only makes a wear-resistant contact interface between the transfer layer and the underlying film by densification and oxidation, but also reduces surface interaction energies, finally resulting in the significant improvement in the durability.

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来源期刊
Friction
Friction Engineering-Mechanical Engineering
CiteScore
12.90
自引率
13.20%
发文量
324
审稿时长
13 weeks
期刊介绍: Friction is a peer-reviewed international journal for the publication of theoretical and experimental research works related to the friction, lubrication and wear. Original, high quality research papers and review articles on all aspects of tribology are welcome, including, but are not limited to, a variety of topics, such as: Friction: Origin of friction, Friction theories, New phenomena of friction, Nano-friction, Ultra-low friction, Molecular friction, Ultra-high friction, Friction at high speed, Friction at high temperature or low temperature, Friction at solid/liquid interfaces, Bio-friction, Adhesion, etc. Lubrication: Superlubricity, Green lubricants, Nano-lubrication, Boundary lubrication, Thin film lubrication, Elastohydrodynamic lubrication, Mixed lubrication, New lubricants, New additives, Gas lubrication, Solid lubrication, etc. Wear: Wear materials, Wear mechanism, Wear models, Wear in severe conditions, Wear measurement, Wear monitoring, etc. Surface Engineering: Surface texturing, Molecular films, Surface coatings, Surface modification, Bionic surfaces, etc. Basic Sciences: Tribology system, Principles of tribology, Thermodynamics of tribo-systems, Micro-fluidics, Thermal stability of tribo-systems, etc. Friction is an open access journal. It is published quarterly by Tsinghua University Press and Springer, and sponsored by the State Key Laboratory of Tribology (TsinghuaUniversity) and the Tribology Institute of Chinese Mechanical Engineering Society.
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