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Influence of water on the tribological properties of zinc dialkyl-dithiophosphate and over-based calcium sulfonate additives in wet clutch contacts
Luleå University of Technology, Department of Engineering Sciences and Mathematics, Machine Elements.ORCID iD: 0000-0002-8972-2944
Luleå University of Technology, Department of Civil, Environmental and Natural Resources Engineering, Chemical Engineering.ORCID iD: 0000-0001-9794-8305
Luleå University of Technology, Department of Engineering Sciences and Mathematics, Machine Elements.ORCID iD: 0000-0003-3157-4632
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2015 (English)In: Tribology International, ISSN 0301-679X, E-ISSN 1879-2464, Vol. 87, p. 113-120Article in journal (Refereed) Published
Abstract [en]

Usually the wet clutch lubricant properties vary with different formulations of base oil types and additives. The aim of this paper was to evaluate the effect of water on the performance of additives in ATF. Simplified lubricants, ZDDP and over-based Ca-sulfonates detergent additives in an API Group I mineral base oil, were employed to compare with the commercial fully-formulated automatic transmission fluid (DEXRON®VI) during water-contamination. A full-scale wet clutch test rig was used to evaluate the frictional response due to water contamination of the lubricants. Fourier Transform Infrared Spectroscopy was utilized to evaluate the variation in the solubility of these polar organic additives in the water phase and Karl-Fischer titration was utilized to evaluate the post-test water content for different formulations.

Place, publisher, year, edition, pages
2015. Vol. 87, p. 113-120
National Category
Tribology (Interacting Surfaces including Friction, Lubrication and Wear) Chemical Process Engineering
Research subject
Machine Elements; Chemical Technology
Identifiers
URN: urn:nbn:se:ltu:diva-13289DOI: 10.1016/j.triboint.2015.02.006ISI: 000353730500013Scopus ID: 2-s2.0-84924913600Local ID: c7d39d15-0ec2-4a97-b3fa-72d8755bdd6aOAI: oai:DiVA.org:ltu-13289DiVA, id: diva2:986241
Note
Validerad; 2015; Nivå 2; 20150213 (andbra)Available from: 2016-09-29 Created: 2016-09-29 Last updated: 2018-07-10Bibliographically approved

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Fatima, NowshirMinami, IchiroHolmgren, AllanMarklund, PärBerglund, KimLarsson, Roland

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Tribology (Interacting Surfaces including Friction, Lubrication and Wear)Chemical Process Engineering

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