Tribology Letters

, Volume 23, Issue 3, pp 191–196 | Cite as

Benzotriazole as the additive for ionic liquid lubricant: one pathway towards actual application of ionic liquids

  • X. Liu
  • F. Zhou
  • Y. Liang
  • W. Liu


In this paper, we report on the first tribological evaluation of the room temperature ionic liquids (RTILs) compatible lubricant additive. Benzotriazole (BTA) was chosen for study in that it shows good miscibility with imidazole ionic liquids because of similar molecular structure. BTA can greatly improve the tribological behaviors of ionic liquids carrying hexafluorophosphate anions for Steel/Cu–Sn alloy sliding pair mainly because of the alleviation of corrosion. The worn surface of the bronze was investigated by X-ray photoelectron spectroscopy (XPS), which revealed complex tribochemical reactions during the sliding process. A protective film comprised of [Cu(–C6H5N3)] and Cu2O is formed. Strong interaction between benzotriazole and the surface of Cu alloy was proposed to account for the excellent anti-wear and anti-corrosion improvement capability.


lubricant ionic liquid BTA additive 



The authors acknowledge the financial support of this work by the “Top Hundreds Talent” Program of Chinese Academy of Sciences and NSFC (50421502, 50405040).


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Copyright information

© Springer Science+Business Media, Inc. 2006

Authors and Affiliations

  1. 1.State Key Laboratory of Solid LubricationLanzhou Institute of Chemical Physics, Chinese Academy of SciencesLanzhouPeople’s Republic of China

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