Tribological study of two ammonium chloride-decanoic acid deep eutectic solvents(DESs)as high-performance lubricants
作者机构：State Key Laboratory of Solid LubricationLanzhou Institute of Chemical PhysicsChinese Academy of SciencesLanzhou 730000China Center of Materials Science and Optoelectronics EngineeringUniversity of Chinese Academy of SciencesBeijing 100049China Zibo Innovation Center of High-End Synthetic Lubricating MaterialsZibo 255000China
出 版 物：《Friction》 (摩擦（英文版）)
年 卷 期：2024年第12卷第11期
页 面：2441-2457页
核心收录：
学科分类：08[工学] 080203[工学-机械设计及理论] 0802[工学-机械工程]
基 金：the financial support from the National Natural Science Foundation of China(No.51975560),Key Projects of Lanzhou Institute of Chemical Physics,Chinese Academy of Sciences(No.KJZLZD-1) Taishan Scholars Project of Key R&D Program of Shandong Province(No.2020CXGC11002)
主 题：deep eutectic solvent(DES) lubricants tribological performance boundary lubrication
摘 要：Deep eutectic solvents(DESs)are acknowledged as a novel class of functional *** share similar physical properties with ionic liquids(ILs)and have the potential to be a novel class of *** this study,two DESs,namely tetrabutylammonium chloride-decanoic acid DES(C4-DES)and methyl tricaprylmethylammonium chloride-decanoic acid DES(C8-DES),were synthesized,and their physico-chemical properties and tribological performances were ***-analysis of the rubbing surfaces used multiple techniques to gain insights into the lubrication *** show that the coefficient of friction(COF)and wear were reduced by approximately 29%and 91%for the C4-DES,and 36%and 94%for the C8-DES,compared to an ester base *** friction reduction behavior of the DESs is attributed to the monolayer adsorption of the polar group in the decanoic acid(DEAC),whose effectiveness is affected by the component of the ammonium salts in the DESs and the operating *** addition to the adsorbed film,worn surface analysis revealed that an ultra-thin tribochemical film with a thickness of 3–7 nm was formed on the surfaces lubricated with the *** composition of the film was studied,and the lubrication mechanisms of the two DESs were discussed.
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