scholarly journals Towards Phosphorus Free Ionic Liquid Anti-Wear Lubricant Additives

Lubricants ◽  
2016 ◽  
Vol 4 (2) ◽  
pp. 22 ◽  
Author(s):  
Anthony Somers ◽  
Ruhamah Yunis ◽  
Michel Armand ◽  
Jennifer Pringle ◽  
Douglas MacFarlane ◽  
...  
Keyword(s):  
Ionic Liquid ◽  
Lubricant Additives

scholarly journals Effect of Ionicity of Three Protic Ionic Liquids as Neat Lubricants and Lubricant Additives to a Biolubricant

Coatings ◽  
2019 ◽  
Vol 9 (11) ◽  
pp. 713 ◽  
Author(s):  
Hong Guo ◽  
Angela Rina Adukure ◽  
Patricia Iglesias
Keyword(s):  
Ionic Liquid ◽  
Ionic Liquids ◽  
Friction And Wear ◽  
Cost Effective ◽  
Lubricant Additive ◽  
Lubricant Additives ◽  
Environmental Damage ◽  
Protic Ionic Liquids ◽  
Protic Ionic Liquid ◽  
Wear Process

Friction and wear of sliding surfaces are responsible for important energy losses and negative environmental effects. The use of environmentally friendly and cost-effective protic ionic liquids as neat lubricants and lubricant additives has the potential to increase the efficiency and durability of mechanical components without increasing the environmental damage. In this work, three halogen-free protic ionic liquids with increasing extent of ionicity, 2-hydroxyethylammonium 2-ethylhexanoate, 2-hydroxymethylammonium 2-ethylhexancate, and 2-hydroxydimethylammonium 2-ethylhexanoate, were synthesized and studied as neat lubricants and additives to a biodegradable oil in a steel–steel contact. The results show that the use of any protic ionic liquid as a neat lubricant or lubricant additive reduced friction and wear with respect to the biodegradable oil. The ionic liquid with the lowest ionicity reached the highest wear reduction. The one possessing the highest ionicity presented the poorest friction and wear behaviors as a neat lubricant, probably due to the more ionic nature of this liquid, which promoted tribocorrosion reactions on the steel surface. This ionic liquid performed better as an additive, showing that a small addition of this liquid in a biodegradable oil is enough to form protective layers on steel surfaces. However, it is not enough to accelerate the wear process with detrimental tribocorrosion reactions.

Synthesis of poly(ionic liquid)s brush-grafted carbon dots for high-performance lubricant additives of polyethylene glycol

Carbon ◽  
2019 ◽  
Vol 154 ◽  
pp. 301-312 ◽  
Author(s):  
Zihao Mou ◽  
Baogang Wang ◽  
Hongsheng Lu ◽  
Shanshan Dai ◽  
Zhiyu Huang
Keyword(s):  
Ionic Liquid ◽  
Polyethylene Glycol ◽  
Carbon Dots ◽  
High Performance ◽  
Lubricant Additives ◽  
Poly Ionic Liquid

Addition of low concentrations of an ionic liquid to a base oil reduces friction over multiple length scales: a combined nano- and macrotribology investigation

2016 ◽  
Vol 18 (9) ◽  
pp. 6541-6547 ◽  
Author(s):  
Hua Li ◽  
Anthony E. Somers ◽  
Patrick C. Howlett ◽  
Mark W. Rutland ◽  
Maria Forsyth ◽  
...  
Keyword(s):  
Ionic Liquid ◽  
Ionic Liquids ◽  
Lubricant Additives ◽  
Length Scales ◽  
Base Oil ◽  
Model Base ◽  
Multiple Length Scales ◽  
Low Concentrations

The efficacy of ionic liquids (ILs) as lubricant additives to a model base oil has been probed at the nanoscale and macroscale as a function of IL concentration using the same materials.

Friction and Wear Properties of Halogen-Free and Halogen-Containing Ionic Liquids Used As Neat Lubricants, Lubricant Additives and Thin Lubricant Layers

2017 ◽  
Author(s):  
Hong Guo ◽  
Rui Liu ◽  
Alfonso Fuentes-Aznar ◽  
Patricia Iglesias Victoria
Keyword(s):  
Ionic Liquid ◽  
Ionic Liquids ◽  
Friction And Wear ◽  
Mineral Oil ◽  
Surface Interactions ◽  
Lubricant Additives ◽  
Wear Properties ◽  
Sem Images ◽  
Wear Reduction ◽  
Halogen Free

The lubricating ability of one halogen-free and one halogen-containing phosphonium-based ionic liquids are investigated as neat lubricants, lubricant additives and thin lubricant layers in steel-steel contact. The use of the ionic liquids in any of the three lubricating methods reduced friction and wear compared to a base mineral oil. The halogen-free ionic liquid outperformed the halogen-containing ionic liquid in the three methods of lubrication. The highest friction and wear reduction were obtained when ionic liquids were used as neat lubricants. Under this condition, friction reductions of 37.21% and 25.73 %, and wear reduction of 47.12% and 41.18% compared to the based mineral oil were obtained for the halogen-free and halogen-containing ionic liquids respectively. The wear mechanisms and surface interactions are discussed in terms of ionic liquid-metal surface interactions from optical and SEM images and EDS analysis.

Synergy between graphene and ionic liquid lubricant additives

2017 ◽  
Vol 116 ◽  
pp. 371-382 ◽  
Author(s):  
José Sanes ◽  
María-Dolores Avilés ◽  
Noelia Saurín ◽  
Tulia Espinosa ◽  
Francisco-José Carrión ◽  
...  
Keyword(s):  
Ionic Liquid ◽  
Lubricant Additives ◽  
Liquid Lubricant

scholarly journals Poly(ionic liquid)s as lubricant additives with insight into adsorption-lubrication relationship

2022 ◽  
Vol 165 ◽  
pp. 107278
Author(s):  
Jian Wu ◽  
Yanlong Luo ◽  
Yifeng Chen ◽  
Xiaohua Lu ◽  
Xin Feng ◽  
...  
Keyword(s):  
Ionic Liquid ◽  
Lubricant Additives ◽  
Poly Ionic Liquid ◽  
Insight Into

scholarly journals Impact of Primary and Secondary ZDDP and Ionic Liquid as Lubricant Oil Additives on the Performance and Physicochemical Properties of Pd-Based Three-Way Catalysts

Catalysts ◽  
2021 ◽  
Vol 11 (8) ◽  
pp. 878
Author(s):  
Daekun Kim ◽  
Todd J. Toops ◽  
Ke Nguyen ◽  
Michael J. Lance ◽  
Jun Qu
Keyword(s):  
Ionic Liquid ◽  
Inductively Coupled Plasma ◽  
Flow Reactor ◽  
Analytical Techniques ◽  
Optical Emission ◽  
Oxygen Storage Capacity ◽  
Lubricant Additives ◽  
Oxygen Storage ◽  
Base Case ◽  
Shift Reaction

In the present study, two industry primary and secondary zinc dialkyldithiophosphate standards, ZDDP1 and ZDDP2, respectively, are evaluated for their impact on the performance of Pd-based three-way catalyst and bench-marked against two mixed lubricant additives formed from either ZDDP1 or ZDDP2 with a second-generation oil-miscible phosphoric-containing ionic liquid (IL). The three-way catalysts (TWCs) are exposed to the lubricant additives in an engine bench under four different scenarios: a base case with no additive (NA), ZDDP1, IL+ZDDP1, ZDDP2, and IL+ZDDP2. The engine-aged TWC samples are characterized through a variety of analytical techniques, including evaluation of catalyst reactivity in a bench-flow reactor. With respect to the water–gas shift reaction and the oxygen storage capacity, the ZDDP2- and IL+ZDDP2-aged TWC samples are more degraded than the ZDDP1- and IL+ZDDP1-aged TWC samples. X-ray diffraction (XRD) patterns indicate that phosphorus in the form of CePO4 was found to be present in the washcoat of all TWC samples, with the highest amount found in the ZDDP2-aged TWC sample. The results obtained from XRD are further confirmed by those from inductively coupled plasma-optical emission spectroscopy (ICP-OES), which show that more phosphorus is detected in the washcoat of ZDDP2- and IL+ZDDP2-aged TWC samples than in the ZDDP1- and IL+ZDDP1-aged TWC samples.

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