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Tribological behavior of oils additised with a phosphonium-derived ionic liquid compared to a commercial oil

Marlene Bartolomé Sáez (Department of Marine Science and Technology, University of Oviedo, Gijon, Spain)
Antolin E. Hernández Battez (Department of Construction and Manufacturing Engineering, University of Oviedo, Gijon, Spain and Faculty of Science and Technology, Bournemouth University, Poole, UK)
Jorge Espina Casado (Department of Physical and Analytical Chemistry, Faculty of Chemistry, University of Oviedo, Oviedo, Spain)
José L. Viesca Rodríguez (Department of Construction and Manufacturing Engineering, University of Oviedo, Gijon, Spain and Faculty of Science and Technology, Bournemouth University, Poole, UK)
Alfonso Fernández-González (Department of Physical and Analytical Chemistry, Faculty of Chemistry, University of Oviedo, Oviedo, Spain)
Rubén González Rodriguez (Department of Marine Science and Technology, University of Oviedo, Gijon, Spain and Faculty of Science and Technology, Bournemouth University, Poole, UK)

Industrial Lubrication and Tribology

ISSN: 0036-8792

Article publication date: 27 August 2020

Issue publication date: 1 February 2021

113

Abstract

Purpose

The purpose of this paper is to study the antifriction, antiwear and tribolayer formation properties of the trihexyltetradecylphosphonium bis(2,4,4-trimethylpentyl) phosphinate ionic liquid (IL) as additive at 1 wt.% in two base oils and their mixtures, comparing the results with those of a commercial oil.

Design/methodology/approach

The mixture of the base oils used in the formulation of the commercial oil SAE 0W20 plus the IL was tested under rolling/sliding and reciprocating conditions to determine the so-called Stribeck curve, the tribolayer formation and the antifriction and antiwear behaviors.

Findings

The use of this IL as additive in these oils does not change their viscosity; improves the antifriction and antiwear properties of the base oils, making equal or outperforming these properties of the SAE 0W20; and the thickness and formation rate of the tribolayer resulting from the IL-surface interaction is highly dependent on the type of base oil and influence on the friction and wear results.

Originality/value

The use of this IL allows to replace partial or totally commercial antifriction and antiwear additives.

Peer review

The peer review history for this article is available at: https://publons.com/publon/10.1108/ILT-05-2020-0179/

Keywords

Acknowledgements

The authors thank the Spanish and the Principality of Asturias Governments for the DPI2013-48348-C2-1-R (STARLUBE) and the IDI/2018/000131 (LuSuTec) grants, respectively, which supported this work.

Citation

Bartolomé Sáez, M., Hernández Battez, A.E., Espina Casado, J., Viesca Rodríguez, J.L., Fernández-González, A. and González Rodriguez, R. (2021), "Tribological behavior of oils additised with a phosphonium-derived ionic liquid compared to a commercial oil", Industrial Lubrication and Tribology, Vol. 73 No. 1, pp. 137-144. https://doi.org/10.1108/ILT-05-2020-0179

Publisher

:

Emerald Publishing Limited

Copyright © 2020, Emerald Publishing Limited

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