Improving the wettability and lubrication properties of gallium-based liquid metal through the reaction adsorption of copper and gallium

IF 6.1 1区工程技术 Q1 ENGINEERING, MECHANICAL

Tribology International Pub Date : 2024-10-22 DOI:10.1016/j.triboint.2024.110338

Qiang Liu , Jie Guo , Zhibo Liu , Jun Cheng , Shengyu Zhu , Rengen Xu , Xinjian Cao , Jun Yang , Weimin Liu

引用次数: 0

Abstract

Gallium-based liquid metal (GLM) is a promising lubricant used in extreme working conditions. In this paper, a copper-containing friction pair (316L-10Cu) is prepared, and the wettability and lubrication properties of GLM are improved by the reaction adsorption of copper and gallium. Compared with 316 L, the contact angle of GLM on 316L-10Cu surface decreases from 153° to 124°. At sliding speeds of 0.01 m/s (boundary lubrication) and 0.05 m/s (mixed lubrication), the friction coefficients of Si₃N₄/316L-10Cu decreases by 48.5 % and 24.6 % compared to Si₃N₄/316 L, and the wear rates decreases by 86.5 % and 80.7 %. The improved lubrication performance is attributed to copper doping promoting the adsorption of gallium on the frictional interfaces, and better wetting enhancing the hydrodynamic pressure effect of GLM.

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通过铜和镓的反应吸附改善镓基液态金属的润湿性和润滑性能

镓基液态金属（GLM）是一种在极端工作条件下使用的前景广阔的润滑剂。本文制备了含铜摩擦副（316L-10Cu），并通过铜和镓的反应吸附改善了 GLM 的润湿性和润滑性。与 316 L 相比，GLM 在 316L-10Cu 表面上的接触角从 153°减小到 124°。在滑动速度为 0.01 m/s （边界润滑）和 0.05 m/s （混合润滑）时，与 Si3N4/316 L 相比，Si3N4/316L-10Cu 的摩擦系数分别降低了 48.5% 和 24.6%，磨损率分别降低了 86.5% 和 80.7%。润滑性能的改善归因于铜的掺杂促进了镓在摩擦界面上的吸附，以及更好的润湿性增强了 GLM 的流体动力压力效应。

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.