Open AccessEvaluation of tribological properties of lubricants based on Hersey’s–Stribeck’s characteristics
Author(s) -
Arkadiusz Aranowski,
T. Kałdoński,
Krzysztof Gocman,
T. Kałdoński
Publication year - 2019
Publication title -
biuletyn wojskowej akademii technicznej
Language(s) - English
Resource type - Journals
ISSN - 1234-5865
DOI - 10.5604/01.3001.0013.3007
Subject(s) - tribology , materials science , ionic liquid , composite material , ball (mathematics) , friction coefficient , coefficient of friction , boundary lubrication , forensic engineering , engineering , organic chemistry , mathematical analysis , chemistry , mathematics , catalysis
The content of the paper presents the results of investigations of selected lubricants. The study led to obtaining Hersey’s-Stribeck’s curves and to comparison of the lubricating properties of lubricants belonging to different groups such as hydrocarbon oils, perfluoropolyether oils (PFPE), and ionic liquids. The following liquids were evaluated for tribological properties: PAO-6 polyalphaolefin oil base, CJ 006 ionic liquid (3-methyl-1-propylpyridinium bis(trifluoromethylsulphonyl)-imide) and Fomblin Y 04 synthetic perfluoropolyether oil. The research was carried out using the universal nano/micro tribotester (UNMT-CETR, CA, USA) at the Department of Tribology, Surface Engineering and Service Fluids Logistics, Faculty of Mechanical Engineering, Military University of Technology. The study consisted of friction of a ball bearing steel (100 Cr 6) with a round specimen of a certain roughness (ball-on-disc). Friction occurred in rotational motion of the specimen, at different rotational speeds at constant radius and at constant load (0.25 N; 5 N; 50 N). The friction node was lubricated with the tested liquid.Keywords: tribology, friction factor, Hersey’s−Stribeck’s characteristics.