scholarly journals Tribological performance of ionic liquid-lubricated carbon brush/collector ring current-carrying friction system

2020 ◽  
Vol 6 (4) ◽  
pp. 104-113
Author(s):  
Yang Fu ◽  
Hongling Qin ◽  
Xiang Xu ◽  
Xiaolong Zhang ◽  
Zhiguang Guo
Keyword(s):  
Ionic Liquid ◽  
Ring Current ◽  
Tribological Performance

Oil-soluble ionic liquid to lubricate silicon

2021 ◽  
pp. 135065012098488
Author(s):  
Waleed Al-Sallami ◽  
Pourya Parsaeian ◽  
Abdel Dorgham ◽  
Anne Neville
Keyword(s):  
Ionic Liquid ◽  
High Temperature ◽  
Friction And Wear ◽  
Tribological Performance ◽  
Considerable Reduction ◽  
Zinc Dialkyldithiophosphate ◽  
Lubrication Mechanism ◽  
Wear Coefficient ◽  
Wear Performance ◽  
Micro Scale

Trihexyltetradecylphosphonium bis(2-ethylhexyl)phosphate (phosphonium phosphate) ionic liquid is soluble in non-polar lubricants. It has been proposed as an effective anti-wear additive comparable to zinc dialkyldithiophosphate. Previously, phosphonium phosphate has shown a better anti-wear performance under some conditions such as high temperature. In this work, the tribological performance and the lubrication mechanism of phosphonium phosphate are compared with that of zinc dialkyldithiophosphate when lubricating silicon under various tribological conditions. This can lead to an understanding of the reasons behind the superior anti-wear performance of phosphonium phosphate under some conditions. A micro-scale study is conducted using a nanotribometer. The results show that both additives lead to a considerable reduction in both friction and wear coefficients. The reduction in the wear coefficient is mainly controlled by the formation of the tribofilm on the rubbing surfaces. Zinc dialkyldithiophosphate can create a thicker tribofilm, which results in a better anti-wear performance. However, the formation of a thicker film will lead to a faster depletion and thus phosphonium phosphate can provide better anti-wear performance when the depletion of zinc dialkyldithiophosphate starts.

scholarly journals Ionic Liquid Crystals in Tribology

Lubricants ◽  
2019 ◽  
Vol 7 (9) ◽  
pp. 72 ◽  
Author(s):  
M.D. Avilés ◽  
C. Sánchez ◽  
R. Pamies ◽  
J. Sanes ◽  
M.D. Bermúdez
Keyword(s):  
Molecular Structure ◽  
Ionic Liquid ◽  
Ionic Liquids ◽  
Liquid Crystals ◽  
Tribological Performance ◽  
Wear Rates ◽  
Fatty Acid Derivatives ◽  
Potential Applications ◽  
Ionic Liquid Crystals ◽  
Definition Of

The present work intends to provide a brief account of the most recent advances in the use of ionic liquid crystals (ILCs) in the field of tribology, that is, the development of new lubricants with the ability to reduce the coefficients of friction and the wear rates of materials under sliding conditions. After a definition of ILCs and their relationship with neutral liquid crystals (LCs) and ionic liquids (ILs), the review will be focused on the influence of molecular structure and composition on the tribological performance, the combination with base oils, surfactants or water, and the different sliding configuration and potential applications. The main mechanisms proposed in order to justify the lubricating ability of ILCs will be analyzed. Special emphasis will be made for recent results obtained for fatty acid derivatives due to their renewable and environmentally friendly nature.

Tribological Properties of the Overbased Calcium Sulfonate Complex Greases Containing Different Lubricant Additives

2013 ◽  
Vol 645 ◽  
pp. 133-136
Author(s):  
Peng Qiao ◽  
Yan Qiu Xia ◽  
Xiang Yu Ge
Keyword(s):  
Ionic Liquid ◽  
Tribological Properties ◽  
Friction And Wear ◽  
Sliding Friction ◽  
Tribological Performance ◽  
Mining Equipment ◽  
Wear Properties ◽  
Friction Tester ◽  
Calcium Sulfonate ◽  
Friction And Wear Properties

Overbased calcium sulfonate complex greases have excellent friction and wear properties and have been widely used in metallurgy and mining equipment. The effects and tribological performance of molybdenum dialkydithiocarbamate (MoDTC) and ionic liquid 1-(2-hydroxyethyl)-3-methylimidazolium bis (trifluoromethylsulfonyl) imide ([C2OHMim][NTf2]), 1-(2-hydroxyethyl)-3-hexylimidazolium bis (trifluoromethylsulfonyl) imide ([C2OHHim][NTf2s]), added in overbased calcium sulfonate complex grease as additives were investigated by using reciprocating ball-on-disk sliding friction tester. The results showed that the two kinds of additives with a certain range of concentration could improve the tribological properties of greases.

scholarly journals Non-halogenated Ionic Liquid Dramatically Enhances Tribological Performance of Biodegradable Oils

2019 ◽  
Vol 7 ◽  
Author(s):  
Patrick Rohlmann ◽  
Bulat Munavirov ◽  
István Furó ◽  
Oleg Antzutkin ◽  
Mark William Rutland ◽  
...  
Keyword(s):  
Ionic Liquid ◽  
Tribological Performance ◽  
Biodegradable Oils

Surface Coating from Phosphonate Ionic Liquid Electrolyte for the Enhancement of the Tribological Performance of Magnesium Alloy

2015 ◽  
Vol 7 (19) ◽  
pp. 10337-10347 ◽  
Author(s):  
Ana Eva Jiménez ◽  
Antonella Rossi ◽  
Marzia Fantauzzi ◽  
Tulia Espinosa ◽  
Joaquin Arias-Pardilla ◽  
...  
Keyword(s):  
Ionic Liquid ◽  
Magnesium Alloy ◽  
Surface Coating ◽  
Liquid Electrolyte ◽  
Tribological Performance ◽  
Ionic Liquid Electrolyte

Effect of Graphene and Ionic Liquid Additives on the Tribological Performance of Epoxy Resin

2014 ◽  
Vol 56 (1) ◽  
pp. 133-142 ◽  
Author(s):  
N. Saurín ◽  
J. Sanes ◽  
M. D. Bermúdez
Keyword(s):  
Ionic Liquid ◽  
Epoxy Resin ◽  
Tribological Performance
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