20.500.12556/RUL-106782 Frictional behaviour of imidazolium sulfate ionic liquid additives under mixed slide-to-roll conditions Ionic liquids are getting increased attention due to their potential use as additives or lubricants. One of parameters that influence their performance is anion alkyl chain length. Three chain lengths in imidazolium sulfate ionic liquids were varied in three different types of tests in order to study the friction performance in all lubrication regimes at different shear rates. Results show significant effect of alkyl chain length on friction behaviour and surface topography. The shortest chain length ionic liquid had the poorest friction performance whilst longer alkyl chain lengths performed significantly better, which was evidenced by the electrical contact resistance. Although friction behaviour was not generally reduced with ionic liquid mixtures, clear tribological improvement was observed in high shear conditions depending on alkyl chain length. Atomic force microscopy (AFM) analysis revealed correlation between ionic liquid chemistry and surface topography of samples after the experiments, with significantly increased roughness for short chain ionic liquid mixture. friction ionic liquid alkyl chain length roughness topography trenje ionska tekočina alkilna dolžine verige hrapavost topografija true false false Angleški jezik Slovenski jezik Članek v reviji 2019-03-18 09:10:27 2019-03-18 09:10:29 2025-03-18 10:06:36 0000-00-00 00:00:00 2015 0 0 Str. 463-477 iss. 8 Vol. 27 Dec. 2015 0000-00-00 PreprintVObjavi Objavljeno NiDoloceno 0000-00-00 0000-00-00 0000-00-00 2016-12-31 531.43(045) 0954-0075 10.1002/ls.1289 13929499 2144539 RAZ_Pejakovic_Vladimir_i2015.pdf RAZ_Pejakovic_Vladimir_i2015.pdf 1 4A50D413BB02A15220F6E06B41AB453B a9278ad674143e7bbe1f1f17dbf5309ad88dd684bffa00119aeed618d3643ef0 5e7ddad2-a1b6-11eb-a523-00155dcfd717 https://repozitorij.uni-lj.si/Dokument.php?lang=slv&id=117532 http://onlinelibrary.wiley.com/doi/10.1002/ls.1289/abstract;jsessionid=262CA88CAA407CE8861E7E5EDDF47691.f01t01 1 https://repozitorij.uni-lj.si/Dokument.php?lang=slv&id=117531 Fakulteta za strojništvo 0 0 0