Ionic liquids as lubricant additives: A review
Abstract
In pursuit of energy efficiency and durability throughout human history, advances in lubricants have always played important roles. Ionic liquids (ILs) are room-temperature molten salts that possess unique physicochemical properties and have shown great potential in many applications with lubrication as one of the latest. While earlier work (2001–2011) primarily explored the feasibility of using ILs as neat or base lubricants, using ILs as lubricant additives has become the new focal research topic since the breakthrough in ILs’ miscibility in nonpolar hydrocarbon oils in early 2012. This work reviews the recent advances in developing ILs as additives for lubrication with an attempt to correlate among the cationic and anionic structures, oil-solubility, and other relevant physicochemical properties, and lubricating behavior. Effects of the concentration of ILs in lubricants and the compatibility between ILs and other additives in the lubricant formulation on the tribological performance are described followed by a discussion of wear protection mechanism based on tribofilm characterization. As a result, future research directions are suggested at the end.
- Authors:
-
- Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
- Publication Date:
- Research Org.:
- Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States)
- Sponsoring Org.:
- USDOE Office of Energy Efficiency and Renewable Energy (EERE), Vehicle Technologies Office (EE-3V)
- OSTI Identifier:
- 1342681
- Grant/Contract Number:
- AC05-00OR22725
- Resource Type:
- Accepted Manuscript
- Journal Name:
- ACS Applied Materials and Interfaces
- Additional Journal Information:
- Journal Volume: 9; Journal Issue: 4; Journal ID: ISSN 1944-8244
- Publisher:
- American Chemical Society (ACS)
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 36 MATERIALS SCIENCE; friction; ionic liquids; lubricant additives; oil-solubility; tribofilm; wear
Citation Formats
Zhou, Yan, and Qu, Jun. Ionic liquids as lubricant additives: A review. United States: N. p., 2016.
Web. doi:10.1021/acsami.6b12489.
Zhou, Yan, & Qu, Jun. Ionic liquids as lubricant additives: A review. United States. https://doi.org/10.1021/acsami.6b12489
Zhou, Yan, and Qu, Jun. Wed .
"Ionic liquids as lubricant additives: A review". United States. https://doi.org/10.1021/acsami.6b12489. https://www.osti.gov/servlets/purl/1342681.
@article{osti_1342681,
title = {Ionic liquids as lubricant additives: A review},
author = {Zhou, Yan and Qu, Jun},
abstractNote = {In pursuit of energy efficiency and durability throughout human history, advances in lubricants have always played important roles. Ionic liquids (ILs) are room-temperature molten salts that possess unique physicochemical properties and have shown great potential in many applications with lubrication as one of the latest. While earlier work (2001–2011) primarily explored the feasibility of using ILs as neat or base lubricants, using ILs as lubricant additives has become the new focal research topic since the breakthrough in ILs’ miscibility in nonpolar hydrocarbon oils in early 2012. This work reviews the recent advances in developing ILs as additives for lubrication with an attempt to correlate among the cationic and anionic structures, oil-solubility, and other relevant physicochemical properties, and lubricating behavior. Effects of the concentration of ILs in lubricants and the compatibility between ILs and other additives in the lubricant formulation on the tribological performance are described followed by a discussion of wear protection mechanism based on tribofilm characterization. As a result, future research directions are suggested at the end.},
doi = {10.1021/acsami.6b12489},
journal = {ACS Applied Materials and Interfaces},
number = 4,
volume = 9,
place = {United States},
year = {Wed Dec 28 00:00:00 EST 2016},
month = {Wed Dec 28 00:00:00 EST 2016}
}
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Diprotic Ammonium Succinate Ionic Liquid in Thin Film Aqueous Lubrication and in Graphene Nanolubricant
journal, January 2019
- Avilés, M. D.; Carrión-Vilches, F. J.; Sanes, J.
- Tribology Letters, Vol. 67, Issue 1
Non-halogenated Ionic Liquid Dramatically Enhances Tribological Performance of Biodegradable Oils
journal, February 2019
- Rohlmann, Patrick; Munavirov, Bulat; Furó, István
- Frontiers in Chemistry, Vol. 7
On the ionic liquid films ‘pinned’ by core–shell structured Fe 3 O 4 @carbon nanoparticles and their tribological properties
journal, January 2019
- An, Rong; Wu, Muqiu; Li, Jing
- Physical Chemistry Chemical Physics, Vol. 21, Issue 48
High lubricity and electrical responsiveness of solvent-free ionic SiO 2 nanofluids
journal, January 2018
- Guo, Yuexia; Zhang, Ligang; Zhang, Ga
- Journal of Materials Chemistry A, Vol. 6, Issue 6
Task-Specific Oil-Miscible Ionic Liquids Lubricate Steel/Light Metal Alloy: A Tribochemistry Study
journal, July 2018
- Yu, Qiangliang; Wang, Yurong; Huang, Guowei
- Advanced Materials Interfaces, Vol. 5, Issue 19
Correlation Between Engine Oil Degradation, Tribochemistry, and Tribological Behavior with Focus on ZDDP Deterioration
journal, May 2019
- Dörr, Nicole; Brenner, Josef; Ristić, Andjelka
- Tribology Letters, Vol. 67, Issue 2
Green and Bio-Based Solvents
journal, April 2018
- Calvo-Flores, Francisco G.; Monteagudo-Arrebola, María José; Dobado, José A.
- Topics in Current Chemistry, Vol. 376, Issue 3
Tribological Investigations of Silicon Nitride Lubricated by Ionic Liquid Aqueous Solutions
journal, January 2019
- Kurz, Johannes; Amann, Tobias; Kailer, Andreas
- Tribology Transactions, Vol. 62, Issue 2
Influence of tribology on global energy consumption, costs and emissions
journal, September 2017
- Holmberg, Kenneth; Erdemir, Ali
- Friction, Vol. 5, Issue 3
Nanometer-Thick Ionic Liquids as Boundary Lubricants
journal, November 2017
- Gong, Xiao; Li, Lei
- Advanced Engineering Materials, Vol. 20, Issue 5
Affinity Ionic Liquids for Chemoselective Gas Sensing
journal, September 2018
- Chang, Albert; Li, Hsin-Yi; Chang, I-Nan
- Molecules, Vol. 23, Issue 9
Five-Stage Selection Procedure of Ionic Liquids for Lubrication of Steel–Steel Contacts in Space Mechanisms
journal, May 2019
- Dörr, Nicole; Merstallinger, Andreas; Holzbauer, Roland
- Tribology Letters, Vol. 67, Issue 3
Synergistic effects of phosphate ionic liquids and octadecylaminen‐oleoyl sarcosinate as lubricating grease additives
journal, March 2019
- Wang, Zeyun; Chang, Jun; Wu, Wei
- Lubrication Science, Vol. 31, Issue 4
Tribological Improvement Using Ionic Liquids as Additives in Synthetic and Bio-Based Lubricants for Steel–Steel Contacts
journal, November 2019
- Syahir, A. Z.; Zulkifli, N. W. M.; Masjuki, H. H.
- Tribology Transactions, Vol. 63, Issue 2
Regulating the dielectric property of percolative composites via a core–shell-structured ionic liquid/carbon nanotube hybrid
journal, January 2019
- Ren, Ye; Zhou, Zheng; Chen, Guang-Xin
- Journal of Materials Science, Vol. 54, Issue 9
Interfacial charge density and its connection to adhesion and frictional forces
text, January 2018
- Wolloch, M.; Levita, G.; Restuccia, P.
- arXiv
MIL‐53(Al) as a Versatile Platform for Ionic‐Liquid/MOF Composites to Enhance CO 2 Selectivity over CH 4 and N 2
journal, July 2019
- Kavak, Safiyye; Polat, H. Mert; Kulak, Harun
- Chemistry – An Asian Journal, Vol. 14, Issue 20
Versatile Method for the Simultaneous Synthesis of Two Ionic Liquids, Otherwise Difficult to Obtain, with High Atom Economy
journal, July 2019
- Szpecht, Andrea; Zajac, Adrian; Zielinski, Dawid
- ChemistryOpen, Vol. 8, Issue 7
Ionic liquids: a brief history
journal, April 2018
- Welton, Tom
- Biophysical Reviews, Vol. 10, Issue 3
Understanding Tribofilm Formation Mechanisms in Ionic Liquid Lubrication
journal, August 2017
- Zhou, Yan; Leonard, Donovan N.; Guo, Wei
- Scientific Reports, Vol. 7, Issue 1
Non-halogenated Ionic Liquid Dramatically Enhances Tribological Performance of Biodegradable Oils
journal, February 2019
- Rohlmann, Patrick; Munavirov, Bulat; Furó, István
- Frontiers in Chemistry, Vol. 7
Establishing Predictive Models for Solvatochromic Parameters of Ionic Liquids
journal, September 2019
- Venkatraman, Vishwesh; Lethesh, Kallidanthiyil Chellappan
- Frontiers in Chemistry, Vol. 7
Imidazolium-based ionic liquids used as additives in the nanolubrication of silicon surfaces
journal, January 2017
- Amorim, Patrícia M.; Ferraria, Ana M.; Colaço, Rogério
- Beilstein Journal of Nanotechnology, Vol. 8