Room temperature ionic liquid 1-ethyl-3-hexylimidazolium-bis(trifluoromethylsulfonyl)-imide as lubricant for steel–steel contact

Qi, Lu; Wang, Haizhong; Ye, Chengfeng; Liu, Weimin; Xue, Qunji

doi:10.1016/j.triboint.2003.12.003

Cited by 186 publications

(111 citation statements)

References 17 publications

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“…Since this report, research has focused on more specific systems, for example, the steel on steel system has had the majority of the interest [16][17][18][19][20][21][22][23][24][25][26]. The more challenging systems in terms of efficient lubrication, including steel/aluminium and titanium/steel, have also received attention [7,15,[27][28][29][30][31][32][33][34][35][36][37][38][39][40][41][42].…”

Section: Ionic Liquidsmentioning

confidence: 99%

“…It was observed that PF 6 and BF 4 anions formed protective tribofilms when present in an IL, and so, subsequent work began to investigate other fluorine containing anions, such as triflate (CF 3 SO 3 , Tf), bis(trifluoromethylsulfonyl)amide (NTf 2 ) and perfluoroalkylphosphate (FAP) [7,20,24,29]. Other non-fluorinated anions that include known useful elements, such as phosphorus (e.g., dibutylphosphate, DBP) and boron (e.g., bis(oxalato)borate, BOB) have also been studied.…”

Section: Anionsmentioning

confidence: 99%

“…During operation, these by-products can cause tribocorrosion [24]. Therefore, the focus moved onto other fluorine containing anions, such as triflate, bis(trifluoromethylsulfonyl)-imide (NTf 2 ) and trifluorotris(pentafluoroethyl)-phosphate (FAP) [20,24,29] that have better hydrolytic and thermal stability than PF 6 and BF 4 . These more stable fluorine anions have been shown to result in lower friction and wear than PF 6 and BF 4 , with the more stable the anion the better the performance [4].…”

Section: Overview Of the Application Of Ils In Different Materials Commentioning

confidence: 99%

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A Review of Ionic Liquid Lubricants

et al. 2013

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Due to ever increasing demands on lubricants, such as increased service intervals, reduced volumes and reduced emissions, there is a need to develop new lubricants and improved wear additives. Ionic liquids (ILs) are room temperature molten salts that have recently been shown to offer many advantages in this area. The application of ILs as lubricants in a diverse range of systems has found that these materials can show remarkable protection against wear and significantly reduce friction in the neat state. Recently, some researchers have shown that a small family of ILs can also be incorporated into non-polar base oils, replacing traditional anti-wear additives, with excellent performance of the neat IL being maintained. ILs consist of large asymmetrical ions that may readily adsorb onto a metal surface and produce a thin, protective film under boundary lubrication conditions. Under extreme pressure conditions, certain IL compounds can also react to form a protective tribofilm, in particular when fluorine, phosphorus or boron atoms are present in the constituent ions.

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Section: Ionic Liquidsmentioning

confidence: 99%

Section: Anionsmentioning

confidence: 99%

Section: Overview Of the Application Of Ils In Different Materials Commentioning

confidence: 99%

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A Review of Ionic Liquid Lubricants

et al. 2013

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“…Some recent literatures have suggested ionic liquids could be used alone, because surface boundary films were formed from ionic liquids during friction tests 3,7,8) . However, usually lubricant additives, such as oiliness agent, friction modifiers and extreme pressure additives, are applied to achieve practical performance of lubricants.…”

Section: Friction Reduction Property Of Carboxylic Acidmentioning

confidence: 99%

“…We also reported tribological properties of ionic liquids 2,3) . Although tribological properties of ionic liquids have been reported [2][3][4][5][6][7][8] , little attention has been given to the effect of additives for ionic liquids 2,6) . Therefore, in this work, we focused on the tribological effect of carboxylic acids for ionic liquids.…”

Section: Introductionmentioning

confidence: 99%

Effects of Carboxylic Acids on Friction and Wear Reducing Properties for Alkylmethylimidazolium Derived Ionic liquids

et al. 2006

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Lubricant additive technology to improve lubricant performances is an important issue for ionic liquids to be applied practically. Effects of carboxylic acids with different carbon chain length in ionic liquid on tribological properties were examined. Solubility of carboxylic acids was dependent on the chain length of carboxylic acids and imidazolium cations. The carboxylic acids reduced friction and wear in comparison with additive free one. It was found that friction reducing properties of carboxylic acid depended on their chain length. Interestingly, additive response of ionic liquids was found to be superior to those for conventional ester oil as base oil. Surface images obtained by an optical microscope clearly show that the additive depressed chemical wear by ionic liquids especially at low load. Surface analysis with EPMA supported films of carboxylic acids as a cause of improvement of friction property. Therefore, the mechanism of carboxylic acids was considered to provide adsorbed film which accompanied with low friction and anti-wear properties.

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Synthetic Base Oils

Dresel¹

2006

Lubricants and Lubrication

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Room temperature ionic liquid 1-ethyl-3-hexylimidazolium-bis(trifluoromethylsulfonyl)-imide as lubricant for steel–steel contact

Cited by 186 publications

References 17 publications

A Review of Ionic Liquid Lubricants

A Review of Ionic Liquid Lubricants

Effects of Carboxylic Acids on Friction and Wear Reducing Properties for Alkylmethylimidazolium Derived Ionic liquids

Synthetic Base Oils

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