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Friction and wear behavior of CF/PTFE composites lubricated by choline chloride ionic liquids
Luleå University of Technology, Department of Engineering Sciences and Mathematics, Machine Elements.ORCID iD: 0000-0001-6085-7880
State Key Laboratory of Materials-Oriented Chemical Engineering, Nanjing University of Technology.
State Key Laboratory of Materials-Oriented Chemical Engineering, Nanjing University of Technology.
State Key Laboratory of Materials-Oriented Chemical Engineering, Nanjing University of Technology.
2013 (English)In: Tribology letters, ISSN 1023-8883, E-ISSN 1573-2711, Vol. 49, no 2, p. 413-420Article in journal (Refereed) Published
Abstract [en]

The use of ionic liquids (ILs) as lubricants has received increasing attention in recent years. The use of ILs, however, is limited by the corrosion problem and their potential toxic property. Here we present the results of our initial study on the tribological properties of carbon fiber (CF)-filled polytetrafluoroethylene (PTFE) composites, which have an excellent chemical resistance property, lubricated by choline chloride ILs. The difference between choline chloride ILs and water and hydraulic oil as lubricants was studied at the same time, as was the effect of the anion on the lubricating property of choline chloride ILs. The worn surface and transfer film of CF/PTFE composites were studied by scanning electron microscopy. Our results indicate that the lubricating property of choline chloride ILs is much better than that of water and hydraulic oil. The friction coefficient and wear rate of CF/PTFE composites lubricated with ILs were approximately 60 and 50 % lower than those under the dry friction condition. Among the three kinds of ILs tested, the best tribological properties of the CF/PTFE composites were found for those sliding in the mixture of 1,2-propanediol and choline chloride. The worn surface and transfer film of CF/PTFE composites were also much smoother than those under the dry friction, water lubrication, and hydraulic oil lubrication conditions.

Place, publisher, year, edition, pages
2013. Vol. 49, no 2, p. 413-420
National Category
Tribology (Interacting Surfaces including Friction, Lubrication and Wear)
Research subject
Machine Elements
Identifiers
URN: urn:nbn:se:ltu:diva-4167DOI: 10.1007/s11249-012-0083-9Local ID: 20ff73e2-cf2c-4518-b528-4ee906f8f8b7OAI: oai:DiVA.org:ltu-4167DiVA: diva2:977031
Note
Validerad; 2013; 20121219 (andbra)Available from: 2016-09-29 Created: 2016-09-29 Last updated: 2018-01-10Bibliographically approved

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