Functionalized Ionic Liquids as Lubricants for Steel-Steel Contact

Abstract:

A new series of functionalized ionic liquids containing ester-group were synthesized through a typical two-step way. The physicochemical properties of the functionalized ionic liquids were studied and the tribological properties of them as lubricants for steel-steel contact were evaluated on an SRV friction and wear tester and compared with the perfluoroalkylpolyether (PFPE), a low-volatility and fluorine containing lubricant, and a conventional ionic liquid, 1-butyl-3-methy imidazolium tetrafluoroborate (LB104), which is nonfunctionalized. Results showed that all the ionic liquids studied in this paper have better lubricities than PFPE as lubricants for steel-steel friction pairs. Functionalized ionic liquids show worse friction reducing abilities at relatively lower loads, which could be ascribed to their higher viscosities, but they always exhibit better anti-wear abilities than LB104. The possible friction mechanisms were discussed.

• Periodical: Applied Mechanics and Materials (Volumes 138-139)
• Pages: 630-634
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.138-139.630
• Online since: November 2011
• Authors: Li Ye Zhu, Li Gong Chen, Xin Yang, Hong Bin Song
• Keywords: Functionalized Ionic Liquid, Lubricant, Physicochemical Properties, Tribology

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