Tribological performance of fatty acid ammonium ionic liquids as anti-wear additives in water-based fluids

被引：4

作者：

Zhang, Mingjian ^{[1
,2
]}

Liu, Haichao ^{[1
]}

Zhang, Enhui ^{[1
]}

Chen, Yunlong ^{[1
]}

Li, Weimin ^{[1
,3
]}

Cheng, Shunfeng ^{[2
]}

机构：

[1] Chinese Acad Sci, Lanzhou Inst Chem Phys, State Key Lab Solid Lubricat, Lanzhou 730000, Peoples R China

[2] Qingdao Agr Univ, Coll Life Sci, Qingdao 266041, Peoples R China

[3] Zibo Innovat Ctr High End Synthet Lubricating Mat, Zibo 255000, Peoples R China

来源：

TRIBOLOGY INTERNATIONAL | 2024年 / 194卷

基金：

中国国家自然科学基金;

关键词：

Ionic liquids; Tribo-film; Water-based lubricant; Tribological mechanism; IMIDAZOLINE DERIVATIVES; LUBRICANT ADDITIVES; DOUBLE-LAYER; SURFACE; GLYCOL; INTERFACE;

D O I：

10.1016/j.triboint.2024.109565

中图分类号：

TH [机械、仪表工业];

学科分类号：

0802 ;

摘要：

In this study, we synthesized eight water-soluble ionic liquids (ILs) and investigated their tribological performance as additives in water-diethylene glycol (WDG) base fluids. The results of the tribological test suggested that these ILs additives demonstrate promising capabilities in friction reduction and anti-wear for water lubricated contacts. The ILs with the longest carboxylic chain length, namely C 10 MIPA and C 10 DIPA in this work, displayed superior tribological performances. Observations on the abraded surfaces showed that the IL forms a monolayer adsorption through self-assembly, and upon rubbing it creates a continuous and stable tribo-film with an uneven thickness of 30 - 60 nm through tribo-chemical reactions. The tribo-film mainly consists of iron oxides. The proposed lubrication mechanisms include adsorbed film and formed tribo-films, which work effectively to reduce the shear stress and thus sliding friction.

引用

页数：12

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