Investigation of the tribological performance of ionic liquids in non-conformal EHL contacts under electric field activation

Autor: Michal Michalec, Petr Svoboda, Ivan Krupka, Martin Hartl, Aleksandar Vencl
Jazyk: angličtina
Rok vydání: 2020
Předmět:
Zdroj: Friction, Vol 8, Iss 5, Pp 982-994 (2020)
Druh dokumentu: article
ISSN: 2223-7690
2223-7704
DOI: 10.1007/s40544-019-0342-y
Popis: Abstract Real-time external alteration of the internal properties of lubricants is highly desirable in all mechanical systems. However, fabricating a suitable and effective smart lubricant is a long-lasting experimental process. In this study, the film thickness and frictional response of ionic liquid-lubricated non-conformal contacts to an electric field excitation under elastohydrodynamic conditions were examined. Film thickness was evaluated using a “ball-on-disc” optical tribometer with an electric circuit. Friction tests were carried on a mini traction machine (MTM) tribometer with a “ball-on-disc” rotation module and an electric circuit for contact area excitation. The results demonstrate that there is a difference in the behaviour of the ionic liquid during electric field excitation at the evaluated film thicknesses. The results of evaluated film thicknesses demonstrate that there is a difference in the behaviour of the ionic liquid during electric field excitation. Therefore, the ionic liquids could be a new basis for the smart lubrication of mechanical components. Moreover, the proposed experimental approach can be used to identify electrosensitive fluids.
Databáze: Directory of Open Access Journals
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