Comparison of an oil-miscible ionic liquid and ZDDP as a lubricant anti-wear additive

被引:166
作者
Qu, Jun [1 ]
Luo, Huimin [2 ]
Chi, Miaofang [1 ]
Ma, Cheng [1 ]
Blau, Peter J. [1 ]
Dai, Sheng [3 ]
Viola, Michael B. [4 ]
机构
[1] Oak Ridge Natl Lab, Div Mat Sci & Technol, Oak Ridge, TN 37831 USA
[2] Oak Ridge Natl Lab, Energy & Transportat Sci Div, Oak Ridge, TN 37831 USA
[3] Oak Ridge Natl Lab, Div Chem Sci, Oak Ridge, TN 37831 USA
[4] Gen Motors Corp, Ctr Res & Dev, Detroit, MI USA
关键词
Oil-soluble ionic liquid; Lubricant additives; Tribo-film; ZDDP; STEEL/STEEL CONTACTS; PERFORMANCE; MECHANISM; AMMONIUM; ALLOYS;
D O I
10.1016/j.triboint.2013.11.010
中图分类号
TH [机械、仪表工业];
学科分类号
0802 ;
摘要
This paper reports the anti-scuffing/anti-wear behavior and mechanism of an oil-miscible ionic liquid (IL), trihexyltetradecylphosphonium bis(2-ethylhexyl)phosphate, in a base oil at 1.0 wt% concentration under both room and elevated temperatures. Results are benchmarked against those for a conventional anti-wear additive, zinc dialkyl-dithiophosphate (ZDDP). Reciprocating sliding, boundary lubrication tests were conducted using a piston ring segment against a cylinder liner piece cut from actual automotive engine components. Although the IL and ZDDP worked equally well to prevent scuffing and reduce wear in the room-temperature tests, the IL significantly outperformed ZDDP in the 100 degrees C tests. The top surfaces and cross sections of the worn surfaces were characterized to reveal the morphology, thickness, nanostructure, and chemical composition of the IL-induced tribo-films. (C) 2013 Elsevier Ltd. All rights reserved.
引用
收藏
页码:88 / 97
页数:10
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