Synthesis of dicationic symmetrical and asymmetrical ionic liquids and their tribological properties as ultrathin films

被引：100
|
作者：
Yu, Guiqin
Yan, Shiqiang
Zhou, Feng
Liu, Xuqing
Liu, Weimin
Liang, Yongmin [1 ]
机构：
[1] Lanzhou Univ, State Key Lab Appl Organ Chem, Lanzhou 730000, Peoples R China
[2] Chinese Acad Sci, Lanzhou Inst Chem Phys, State Key Lab Solid Lubricat, Lanzhou 730000, Peoples R China
来源：
TRIBOLOGY LETTERS | 2007年 / 25卷 / 03期
基金：
中国国家自然科学基金;
关键词：
solid lubrication; film thickness; thermal stability; steel; SEM; EDS;
D O I：
10.1007/s11249-006-9167-8
中图分类号：
TQ [化学工业];
学科分类号：
0817 ;
摘要：
A new series of novel dicationic symmetrical and asymmetrical ionic liquids (ILs) consisting of tributylalkyl phosphonium and alkylimidazolium were synthesized. Their tribological properties in the form of spin-coated ultra-thin films sliding against AISI-52100 steel ball were studied in a ball-on-plate configuration on a Universal Micro-tribometer-2MT tester, using perfluoropolyether (PFPE) and normal ILs as comparisons. The best result is obtained for asymmetrical 1-(1-tributylphosphine-yl-hexyl)-3methylimidazolium dihexafluorophosphate, which has very high decomposition temperature-about 450 degrees C and good tribological properties.
引用
收藏
页码：197 / 205
页数：9
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