Tribological properties and synergistic effects of ionic liquids and silver complexes

IF 17.7 1区化学 Q1 CHEMISTRY, MULTIDISCIPLINARY Accounts of Chemical Research Pub Date : 2024-07-16 DOI:10.1108/ilt-04-2024-0128

Long Sun, Chengjie Jin, Xiaodong Tang, Kexin Cao, Songquan Wang, Ningning Hu

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Abstract

Purpose The purpose of this paper is to solve the abrupt deterioration of lubricant performance in high-temperature conditions. Design/methodology/approach Three silver pyrazolyl methyl pyridine complexes with different morphologies were synthesized. A four-ball tribometer was used to assess the tribological characteristics as an additive for pentaerythritol oleate both independently and compound with 1-hexyl-3-methylimidazolium bis(trifluoromethane sulfonyl)imide. Findings The results showed that when silver complexes and ionic liquids (IL) act independently, sheet silver complex 1 and rod silver complex 2 exhibit good lubricating performance; the optimal antifriction concentration of the ILs is 0.25 Wt.%. The tribological results of the compounds additive of ILs and silver complexes indicate that the wear scar diameter of compound 1 decreased by 16.914%, the wear volume reduced by 7.44% and the lubrication effect surpassed that of the two substances individually; rod compound 2 exhibited an antagonistic effect, intensifying wear; compound 3’s lubrication effect fell between that of the two individual components. Originality/value The compound of sheet silver complexes and ILs effectively solves the agglomeration problem of micro/nano lubricant additives. When the interface fails, self-repair is completed, improving the stability and antiwear performance of the lubricating oil. Peer review The peer review history for this article is available at: https://publons.com/publon/10.1108/ILT-04-2024-0128

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离子液体和银络合物的摩擦学特性和协同效应

设计/方法/途径合成了三种不同形态的吡唑甲基吡啶银络合物。结果结果表明，当银络合物和离子液体（IL）独立作用时，片状银络合物 1 和棒状银络合物 2 表现出良好的润滑性能；IL 的最佳减摩浓度为 0.25 Wt.%。ILs 和银络合物复合添加剂的摩擦学结果表明，化合物 1 的磨损痕直径减小了 16.914%，磨损体积减小了 7.44%，润滑效果超过了两种物质单独使用时的效果；棒状化合物 2 表现出拮抗作用，加剧了磨损；化合物 3 的润滑效果介于两种单独成分之间。当界面失效时，可完成自我修复，从而提高润滑油的稳定性和抗磨性能。同行评议本文的同行评议历史见：https://publons.com/publon/10.1108/ILT-04-2024-0128。

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来源期刊

Accounts of Chemical Research 化学-化学综合

CiteScore

31.40

自引率

1.10%

发文量

312

审稿时长

2 months

期刊介绍： Accounts of Chemical Research presents short, concise and critical articles offering easy-to-read overviews of basic research and applications in all areas of chemistry and biochemistry. These short reviews focus on research from the author’s own laboratory and are designed to teach the reader about a research project. In addition, Accounts of Chemical Research publishes commentaries that give an informed opinion on a current research problem. Special Issues online are devoted to a single topic of unusual activity and significance. Accounts of Chemical Research replaces the traditional article abstract with an article "Conspectus." These entries synopsize the research affording the reader a closer look at the content and significance of an article. Through this provision of a more detailed description of the article contents, the Conspectus enhances the article's discoverability by search engines and the exposure for the research.