Mechanism of tribofilm formation with P and S containing ionic liquids

被引：55

作者：

Sharma, Vibhu ^{[1
]}

Gabler, Christoph ^{[2
]}

Doerr, Nicole ^{[2
]}

Aswath, Pranesh B. ^{[1
]}

机构：

[1] Univ Texas Arlington, Mat Sci & Engn Dept, Arlington, TX 76019 USA

[2] AC2T Res GmbH, A-2700 Wiener Neustadt, Austria

来源：

TRIBOLOGY INTERNATIONAL | 2015年 / 92卷

基金：

加拿大健康研究院; 加拿大自然科学与工程研究理事会;

关键词：

Ionic liquids; Tribofilms; XANES; Wear; Friction; RAY-ABSORPTION-SPECTROSCOPY; ZDDP ANTIWEAR FILMS; TRIBOLOGICAL BEHAVIOR; LUBRICANT ADDITIVES; XANES SPECTROSCOPY; CHEMICAL-CHARACTERIZATION; STEEL-STEEL; PERFORMANCE; CHEMISTRY; FRICTION;

D O I：

10.1016/j.triboint.2015.07.009

中图分类号：

TH [机械、仪表工业];

学科分类号：

0802 ;

摘要：

Mechanism of tribofilm formation with two ionic liquids (IL), choline bis(2-ethylhexyl)phosphate and choline dibutyldithiophosphate was studied. XANES analysis of tribofilms indicates that the underlying mechanism of tribofilm formation with ionic liquids is similar to that formed when ZDDP is used. The chain length of glassy polyphosphates with IL in base oil is longer in length in comparison to that formed with ZDDP under identical conditions indicating a higher level of networking. In fully formulated oils, Ca replaces Zn and Fe (in the case of ZDDP) or Fe (when IL's are used) as the primary cationic species present in the polyphosphate network. The sulfur is present in the form of sulfates of different cationic species including Fe and Ca. (C) 2015 Elsevier Ltd. All rights reserved.

引用

页码：353 / 364

页数：12

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