4323 KB0 KB199920252025Gil, LeszekKilikevičius, ArturasOtrocki, MateuszPieniak, DanielPrzystupa, KrzysztofWalczak, Agataštevilka:7/8letnik:71str. 258-266DOI:10.5545/sv-jme.2024.1188ISSN:2536-3948COBISSID_HOST:254641667URN:URN:NBN:SI:doc-VHDMOAM5enFakulteta za strojništvoStrojniški vestnikcoefficient of frictionfrictional contactkoeficient trenjaodpornost proti obrabipolimerni drsni materialipolymeric sliding materialsstik ob trenjutribological wear resistanceEvaluation of surface functional properties of polymeric sliding materials for lubricated metal-polymer pairs applications|This work presents a comparative study of the surface mechanical properties and tribological wear resistance of polymeric sliding materials. The authors focused on the application of polymeric materials in producing spare parts for vehicles that are still in use but for which original components are no longer manufactured or are disproportionately expensive compared to the vehicle’s market value. The subject of the study was frictional interactions between the timing chain and the sliding element. Three commercial materials were tested, designated: PA6G, PA6G+MoS2, PE 1000. A commercial lubricant PMO 5W40 Extreme 100 % (intended for vehicles without a particulate filters) was used. The coefficient of friction and wear were analyzed under dry friction and oil bath. The lowest coefficient of dry friction was obtained for the PA6 G, whereas PE 1000 exhibits the highest. Under oil lubrication, however, PE 1000 demonstrated the lowest coefficient of friction. Microscopic analysis of wear scars was performed. The extent of wear depends on the type of material used and the nature of the interaction (dry friction, oil-bath friction). Wear under dry friction was lower than under oil-bath conditions, possibly due to the influence of the Rebinder effectV članku je predstavljena primerjalna študija mehanskih lastnosti površin in odpornosti proti obrabi polimernih drsnih materialov. Avtorji so se osredotočili na uporabo polimernih materialov pri izdelavi nadomestnih delov za vozila, ki so še vedno v uporabi, vendar za njih originalni deli niso več v proizvodnji oziroma so nesorazmerno dragi glede na tržno vrednost vozila. Predmet raziskave so bile ˝tribološke interakcije med verigo krmiljenja in drsnim elementom. Preizkušeni so bili trije komercialni materiali, označeni kot: PA6G, PA6G+MoS2 in PE 1000. Uporabljeno je bilo komercialno mazivo PMO 5W40 Extreme 100 % (namenjeno vozilom brez filtrov trdnih delcev). Analizirani so bili koeficient trenja in obraba pri suhem trenju ter pri delovanju v olju. Najnižji koeficient suhega trenja je bil dobljen za PA6G, medtem ko je PE 1000 pokazal najvišji koeficient. Pri uporabi olja pa je PE 1000 izkazal najnižji koeficient trenja. Izvedena je bila mikroskopska analiza obrabnih sledi. Obseg obrabe je odvisen od vrste uporabljenega materiala in od načina interakcije (suho trenje ali prisotnost oljnega filma). Obraba pri suhem trenju je bila manjša kot pri uporabi olja, kar je lahko posledica vpliva Rebinderjevega učinkaTEXTznanstveno časopisjejournalsSlovenian National E-content AggregatorNational and University Library of SloveniaUniverza v Ljubljani, Fakulteta za strojništvo