Abstract
The article describes, the relationship between the generated and fading electrorheological effect and tribologicalproperties of hydrocarbon lubricating oils containing ionic liquid admixture. Two quasi-homogeneousmixtures were obtained as a result of miscibility tests: 1) the GP1 silicon damping oil containning ionic liquidCJ001, i.e. 1-methyl-3-octyloxymethylimidazolium tetrafluoroborate and 2) the PAO6 base polyalphaolefinoil containing ionic liquid CJ008, i.e. trihexyltetradecylphoshonium bis-(tri-fluoromethylsulfonyl)imide. Theconducted ER tests revealed differences between the electrorheological properties of the two mixtures. Afterincreasing the electric field strength to E = 0.3 kVmm–1 the ER effect of both mixtures disappeared. Forthese mixtures tribological tests were carried out on a four ball apparatus. The lubricity parameters of thetested ionic liquids are much better than base oils and the oil mixtures with ionic liquids also showed betterlubricating properties than their base oils.
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