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Non-halogenated Ionic Liquid Dramatically Enhances Tribological Performance of Biodegradable Oils
KTH, School of Industrial Engineering and Management (ITM), Machine Design (Dept.), Machine Design (Div.).ORCID iD: 0000-0002-7080-1626
KTH, School of Industrial Engineering and Management (ITM), Machine Design (Dept.), Machine Design (Div.).ORCID iD: 0000-0001-9403-9368
KTH, School of Engineering Sciences in Chemistry, Biotechnology and Health (CBH), Chemistry, Applied Physical Chemistry.ORCID iD: 0000-0002-0231-3970
Lulea Univ Technol, Chem Interfaces, Lulea, Sweden..
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2019 (English)In: Frontiers in Chemistry, E-ISSN 2296-2646, Vol. 7, article id 98Article in journal (Refereed) Published
Abstract [en]

It is demonstrated that a phosphonium orthoborate ionic liquid may serve as a wear reducing additive in biodegradable oils at steel-steel surfaces in the boundary lubrication regime. Tribological tests were performed in a bail-on-three plate configuration. A set of surface characterization techniques-SEM/EDS, FIB and white light interferometry were used to characterize surfaces following the tribotests and to observe the formation of any tribofilms. B-11 NMR was used to follow changes in the composition of the ionic-liquid-oil blends and to identify boron-containing decomposition products after the tribotests. The ionic liquid reduces the wear of steel surfaces by up to 92% compared to the neat oil at 90 degrees C; it is shown that the reduction in wear can be correlated with the formation of boron enriched patches in the boundary films.

Place, publisher, year, edition, pages
FRONTIERS MEDIA SA , 2019. Vol. 7, article id 98
Keywords [en]
biodegradable oil, ionic liquid, wear, friction, boundary lubrication, NMR
National Category
Tribology (Interacting Surfaces including Friction, Lubrication and Wear)
Identifiers
URN: urn:nbn:se:kth:diva-246253DOI: 10.3389/fchem.2019.00098ISI: 000459858200001OAI: oai:DiVA.org:kth-246253DiVA, id: diva2:1301323
Note

QC 20190401

Available from: 2019-04-01 Created: 2019-04-01 Last updated: 2019-06-11Bibliographically approved

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Rohlmann, PatrickMunavirov, BulatFuro, IstvanRutland, Mark W.Glavatskih, Sergei

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Rohlmann, PatrickMunavirov, BulatFuro, IstvanRutland, Mark W.Glavatskih, Sergei
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Frontiers in Chemistry
Tribology (Interacting Surfaces including Friction, Lubrication and Wear)

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