Effectiveness of phosphonium cation-based ionic liquids as lubricant additive

Authors: González, R., Bartolomé, M., Blanco, D., Viesca, J.L., Fernández-González, A., Battez, A.H.

Journal: Tribology International

Publication Date: 01/06/2016

Volume: 98

Pages: 82-93

ISSN: 0301-679X

DOI: 10.1016/j.triboint.2016.02.016

Abstract:

Two phosphonium cation-based ionic liquids (ILs) were studied as additive to a mineral oil. Solubility tests and TGA of neat samples were performed. Three concentrations of the ILs were used in the tribological tests. Base oil-ZDDP mixtures were used as comparison samples. Tribological tests were made using a reciprocating ball-on-disc configuration. Load ramp and Stribeck curve tests were also performed. The worn surface was studied by different techniques. The results showed similar and better friction reduction properties for ILs- or ZDDP-containing mixtures than the neat base oil. The [P66614][(iC8)2PO2]-containing mixtures outperformed the antiwear behavior of the other samples. XPS results showed different mechanisms of lubrication when using ILs or ZDDP.

https://eprints.bournemouth.ac.uk/23792/

Source: Scopus