Tribological performance of phosphonium based ionic liquids for an aluminum-on-steel system and opinions on lubrication mechanism

被引：231

作者：

Liu, XuQing ^{[1
]}

Zhou, Feng ^{[1
]}

Liang, YongMin ^{[1
]}

Liu, WeiMin ^{[1
]}

机构：

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

来源：

WEAR | 2006年 / 261卷 / 10期

基金：

中国国家自然科学基金;

关键词：

ionic liquids; tribology; high performance lubricant; phosphonium salt;

D O I：

10.1016/j.wear.2006.03.018

中图分类号：

TH [机械、仪表工业];

学科分类号：

0802 ;

摘要：

A series of asymmetrical tetraalkylphosphonium ionic liquids were synthesized and evaluated as a new kind of lubricant for the contacts of steel/A1 using an Optimol SRV oscillating friction and wear tester in ambient condition. The phosphonium ionic liquid shows excellent tribological performance and is superior to the conventional ionic liquids 1-ethy-3-hexylimidazolium hexafluorophosphate (P206) in terms of anti-wear performance and load-carrying capacity. The chemical compositions of the boundary film generated on different contact surfaces were analyzed on a scanning electron microscope with a Kevex energy dispersive X-ray analyzer attachment (SEM/EDS) and X-ray photoelectron spectrometer (XPS). The friction-reduction and anti-wear mechanism were proposed to originate from the layered structure of ionic liquid under boundary lubrication and the tribochemical reaction of anions with the fresh surface, respectively. (c) 2006 Elsevier B.V. All rights reserved.

引用

页码：1174 / 1179

页数：6

共 25 条

[1] ROOM-TEMPERATURE IONIC LIQUIDS AS SOLVENTS FOR ELECTRONIC ABSORPTION-SPECTROSCOPY OF HALIDE-COMPLEXES [J].