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Characterization and Tribological Evaluation of 1-Benzyl-3-Methylimidazolium Bis(trifluoromethylsulfonyl)imide as Neat Lubricant and Oil Additive

[+] Author Affiliations
Dinesh G. Bansal, Jun Qu, Bo Yu, Huimin Luo, Sheng Dai, Bruce Bunting, Peter Blau

Oak Ridge National Laboratory, Oak Ridge, TN

Gregory Mordukhovich, Donald J. Smolenski

GM Research & Development Center, Warren, MI

Paper No. IJTC2011-61083, pp. 91-93; 3 pages
  • ASME/STLE 2011 International Joint Tribology Conference
  • ASME/STLE 2011 Joint Tribology Conference
  • Los Angeles, California, USA, Oct 24–26, 2011
  • ISBN: 978-0-7918-5474-7
  • Copyright © 2011 by ASME and General Motors


Selected physical and chemical properties and tribological data for a newly-developed, imidazolium-based ionic liquid (IL) are presented. The IL is soluble in the SAE 5W-30 oil up to a certain weight percentage, and is as a promising candidate for use in lubrication applications, either in its neat version or as an oil additive. Characterization of the IL included dynamic viscosity at different temperatures, corrosion effects on cast iron cylinder liners, and thermal stability analysis. The tribological performance was evaluated using a reciprocating ring-on-liner test arrangement. When used in neat version this IL demonstrated friction coefficient comparable to a fully formulated engine oil, and when used as an oil additive it produced less wear.

Copyright © 2011 by ASME and General Motors
Topics: Tribology , Lubricants



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