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Lubricating mechanism of cyano-based ionic liquids on nascent steel surface
KTH, School of Engineering Sciences in Chemistry, Biotechnology and Health (CBH), Chemistry, Surface and Corrosion Science.
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2018 (English)In: Tribology International, ISSN 0301-679X, E-ISSN 1879-2464, Vol. 119, p. 474-480Article in journal (Refereed) Published
Abstract [en]

This study investigates the lubricating mechanism of cyano-based ionic liquids on steel surfaces using Q-MS, ToF-SIMS, and TGA. [EMIM][DCN], [EMIM][TCC], [EMIM][TCB], [BMPL][DCN], [BMPL][TCC], and [BMPL][TCB] were selected as lubricants. [EMIM][TCB] exhibited the highest friction coefficient. The others exhibited very low friction coefficients of less than 0.08. Q-MS analysis indicated that the cation components were detected in outgassing during sliding tests. However, anion components were not detected. ToF-SIMS results showed that the anions remained on the worn surfaces which would lead low friction coefficients. To achieve low friction coefficient, the tribo-decomposition of the ionic liquids and adsorption of anion were required. TGA indicated thermal stability was an index for tribo-decomposition on the nascent steel surface.

Place, publisher, year, edition, pages
Elsevier Ltd , 2018. Vol. 119, p. 474-480
Keyword [en]
Ionic liquids, Q-MS, TGA, ToF-SIMS, Ions, Liquids, Lubrication, Negative ions, Secondary ion mass spectrometry, Tribology, Friction coefficients, Low friction coefficients, Lubricating mechanism, Sliding test, Steel surface, ToF SIMS, Worn surface, Friction
National Category
Materials Engineering
Identifiers
URN: urn:nbn:se:kth:diva-223132DOI: 10.1016/j.triboint.2017.11.019ISI: 000424960500045Scopus ID: 2-s2.0-85034861265OAI: oai:DiVA.org:kth-223132DiVA, id: diva2:1193474
Note

Export Date: 13 February 2018; Article; CODEN: TRBIB; Correspondence Address: Kawada, S.; Graduate School of Tokyo University of Science, Department of Mechanical EngineeringJapan; email: 4515702@ed.tus.ac.jp; Funding details: 15J05958, JSPS, Japan Society for the Promotion of Science; Funding details: JP26630041; Funding details: JP16H02310. QC 20180327

Available from: 2018-03-27 Created: 2018-03-27 Last updated: 2018-03-27Bibliographically approved

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Watanabe, Seiya

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