Effect of the anion on the tribological properties of ionic liquid nano-films on surface-modified silicon wafers

被引：49

作者：

Zhu, Min ^{[1
,2
]}

Yan, Jie ^{[1
]}

Mo, Yufei ^{[1
,2
]}

Bai, Mingwu ^{[1
]}

机构：

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

[2] Chinese Acad Sci, Grad Sch, Beijing 100039, Peoples R China

来源：

TRIBOLOGY LETTERS | 2008年 / 29卷 / 03期

基金：

中国国家自然科学基金;

关键词：

ionic liquid; ultra-thin Film; lubrication; XPS; surface modification;

D O I：

10.1007/s11249-007-9294-x

中图分类号：

TQ [化学工业];

学科分类号：

0817 ;

摘要：

The films of three kinds of 3-butyl-1-methylimidazolium base ionic liquids with thickness of 2 nm were prepared on hydroxyl-terminated and amino-terminated Si substrates by dip-coating method. As anions, tetrafluoroborate, hexafluorophosphate, and adipate, respectively, were chosen. The tribological performances of these thin films were examined by the determination of the film durability and friction coefficient by means of a UMT-2MT tribometer using a steel ball as counterpart. The morphologies of worn surfaces were investigated by a non-contact interferometric microscope. The findings showed that 3-butyl-1-methyl-imidazolium hexafluorophosphate having the poorest hydrophilicity of the ionic liquids exhibited the best tribological properties on aminated Si surface at 0.4 N and 4 Hz.

引用

页码：177 / 183

页数：7

共 23 条

[21] Room-temperature ionic liquids: a novel versatile lubricant [J].