蓖麻油酸/掺钨非晶碳涂层复合体系的超润滑性与水的关系

IF 3.7 2区化学 Q2 CHEMISTRY, MULTIDISCIPLINARY

Langmuir Pub Date : 2025-06-19 DOI:10.1021/acs.langmuir.5c01492

Pengcheng Ma, Liuqing Yang, Longfei Wu, Qiang Wang, Cuijuan Xuan, Junying Hao, Xudong Sui

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引用次数: 0

摘要

碳基涂层与蓖麻油酸结合表现出优异的润滑性和宏观超润滑性，但含水量的影响尚未得到充分探讨。本文制备了掺杂钨的无定形碳涂层/蓖麻油酸复合体系，通过控制蓖麻油酸中的含水量实现了超润滑。当含水量为13.89 wt %时，固液体系的摩擦系数约为0.005。这种现象归因于在滑动过程中形成−(CH2-CH2)n -钝化层。在此钝化层的基础上，蓖麻油酸-水和含有−OH基团的蓖麻油酸分解产物形成氢键层。这种氢键层足够坚固，可以承受正常的载荷，有效地防止固体表面之间的接触。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

Controllable Superlubricity of Ricinoleic Acid/Tungsten-Doped Amorphous Carbon Coating Composite System via Water Content

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Controllable Superlubricity of Ricinoleic Acid/Tungsten-Doped Amorphous Carbon Coating Composite System via Water Content

Carbon-based coatings combined with ricinoleic acid exhibit exceptional lubrication and macroscale superlubricity, yet the influence of the water content remains insufficiently explored. In this paper, a tungsten-doped amorphous carbon coating/ricinoleic acid composite system was prepared, and superlubricity was achieved by controlling the water content in ricinoleic acid. When the water content is 13.89 wt %, the friction coefficient of the solid–liquid system is approximately 0.005. This phenomenon is attributed to the formation of a −(CH₂–CH₂)_n– passivation layer during the sliding process. Based on this passivation layer, a hydrogen bond layer is formed from ricinoleic acid–water and the decomposition products of ricinoleic acid containing −OH groups. This hydrogen bond layer is strong enough to withstand normal loads, effectively preventing contact between solid surfaces.

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来源期刊

Langmuir 化学-材料科学：综合

CiteScore

6.50

自引率

10.30%

发文量

1464

审稿时长

2.1 months

期刊介绍： Langmuir is an interdisciplinary journal publishing articles in the following subject categories: Colloids: surfactants and self-assembly, dispersions, emulsions, foams Interfaces: adsorption, reactions, films, forces Biological Interfaces: biocolloids, biomolecular and biomimetic materials Materials: nano- and mesostructured materials, polymers, gels, liquid crystals Electrochemistry: interfacial charge transfer, charge transport, electrocatalysis, electrokinetic phenomena, bioelectrochemistry Devices and Applications: sensors, fluidics, patterning, catalysis, photonic crystals However, when high-impact, original work is submitted that does not fit within the above categories, decisions to accept or decline such papers will be based on one criteria: What Would Irving Do? Langmuir ranks #2 in citations out of 136 journals in the category of Physical Chemistry with 113,157 total citations. The journal received an Impact Factor of 4.384*. This journal is also indexed in the categories of Materials Science (ranked #1) and Multidisciplinary Chemistry (ranked #5).