Experimental Investigation of Tribological and Rheological Behaviour of Hybrid Nanolubricants for Applications in Internal Combustion Engines

نویسندگان

چکیده

Abstract In this study, the improvement in SAE 10W-40 engine oil tribological performance after addition of magnesium oxide (MgO) nanoadditive and two different phosphonium-based ionic liquids (ILs) was investigated. Besides, rheological behaviour MgO-based nanolubricant IL-based hybrid nanolubricants at temperature range from 293.15 to 363.15 K studied. The nanoparticle characterization performed by means transmission electron microscopy (TEM), Fourier-transform infrared spectroscopy (FTIR), Raman spectroscopy, X-ray diffraction (XRD) scanning (SEM). properties, friction coefficients wear parameters formulated modified with 0.01 wt% MgO 1 ILs compared neat were analysed using a ball-on-three-pins tribometer 3D optical profilometer, respectively. Further analysis on worn surface shown SEM images illustrating formation protective IL tribo-films as additives. tests sliding steel-steel tribo-pairs, IL3-based decreased coefficient volume 7% 59%, respectively, comparison 10W-40, hence better positive synergies found for IL3 Interestingly, thermophysical rheology also revealed that did not affect neither viscosity response nor Newtonian oil, adequately meeting requirements their use internal combustion engines. Graphical

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ژورنال

عنوان ژورنال: Tribology Letters

سال: 2023

ISSN: ['1023-8883', '1573-2711']

DOI: https://doi.org/10.1007/s11249-023-01697-5