20.500.12556/RUL-106735 Influence of concentration and anion alkyl chain length on tribological properties of imidazolium sulfate ionic liquids as additives to glycerol in steel-steel contact lubrication Commercially available ionic liquids were used as additives in the model lubricant fluid glycerol. The stability of the mixtures was controlled by measuring of turbidity. Tribological experiments have been performed on a reciprocating sliding tribometer in the boundary lubrication regime with three ionic liquid concentrations, as well as with neat glycerol and the neat ionic liquids at 100 °C. Wear and friction were measured, and the worn surfaces were examined with optical microscopy, atomic force microscopy and X-ray photoelectron spectroscopy. The results show the influence of the ionic liquid concentration and the anion alkyl chain length on the tribological behavior. Significant improvement in friction and wear reduction at low ionic liquid concentrations was detected and attributed to sulfur species in tribofilm. lubrication lubricants ionic liquids turbidity maziva mazanje tribologija ionske tekočine motnost true false true Angleški jezik Slovenski jezik Članek v reviji 2019-03-14 11:49:01 2019-03-14 11:49:03 2025-03-11 13:28:30 0000-00-00 00:00:00 2016 0 0 Str. 234-243 Vol. 97 May 2016 0000-00-00 PostprintKoncna Objavljeno NiDoloceno 0000-00-00 0000-00-00 0000-00-00 2020-01-29 539.92:621.8(045) 0301-679X 10.1016/j.triboint.2016.01.034 14507803 26558976 RAZ_Pejakovic_Vladimir_i2016.pdf RAZ_Pejakovic_Vladimir_i2016.pdf 1 B061E2226A4487D0A742945685F3A149 508f182e8facaf7dc31adaac8414676315bdb67a1d9457826c6d99607f969724 5ddae050-a1b6-11eb-a523-00155dcfd717 https://repozitorij.uni-lj.si/Dokument.php?lang=slv&id=117507 https://www.sciencedirect.com/science/article/pii/S0301679X16000463?via%3Dihub 1 https://repozitorij.uni-lj.si/Dokument.php?lang=slv&id=117506 Fakulteta za strojništvo 0 0 0