Tribological properties of conductive lubricating greases

Xiaoqiang FAN; Yanqiu XIA; Liping WANG

doi:10.1007/s40544-014-0062-2

Friction 2014, 2(4): 343-353 https://doi.org/10.1007/s40544-014-0062-2

Research Article |

Open Access | Issue | Published: 21 October 2014

Tribological properties of conductive lubricating greases

Show Author's Information Hide Author's Information Xiaoqiang FAN^{¹^,²}, Yanqiu XIA^¹(

), Liping WANG^¹

1 State Key Laboratory of Solid Lubrication,Lanzhou Institute of Chemical Physics, Chinese Academy of Sciences, Lanzhou,730000, China

2 University of Chinese Academy of Sciences, Beijing100039, China

Keywords:

tribology, grease, ionic liquids, conductivity

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FAN X, XIA Y, WANG L. Tribological properties of conductive lubricating greases. Friction, 2014, 2(4): 343-353. https://doi.org/10.1007/s40544-014-0062-2

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Abstract Full text About this article

Abstract

Three kinds of new conductive lubricating greases were prepared using lithium ionic liquids as the base oil and the polytetrafluoroethylene (PTFE) as the thickener. These lithium ionic liquids ([Li(PEG)X]) were obtained by blending lithium salts (LiBF₄, LiPF₆ and LiNTf₂) with poly(ethylene glycol) (PEG) because lithium salts have an extremely high solubility in PEG. The conductivities and contact resistances of the prepared lubricating greases were investigated using the DDSJ-308A conductivity meter and the reciprocating ball-on-disk UMT-2MT sliding tester. In addition, their tribological properties were investigated in detail. Scanning electron microscopy and X-ray photoelectron spectroscopy were employed to explore the friction mechanisms. The results suggest that the prepared lubricating greases have high conductivities and excellent tribological properties. The high conductivities are attributed to ion diffusion or migration of the lithium ionic liquids with an external electric field, and the excellent tribological properties depend on the formation of boundary protective films.

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About this article

Tribological properties of conductive lubricating greases

Show Author's information Hide Author's Information Xiaoqiang FAN^{¹^,²}, Yanqiu XIA^¹(

), Liping WANG^¹

1 State Key Laboratory of Solid Lubrication,Lanzhou Institute of Chemical Physics, Chinese Academy of Sciences, Lanzhou,730000, China

2 University of Chinese Academy of Sciences, Beijing100039, China

Abstract

Keywords: tribology, grease, ionic liquids, conductivity

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Acknowledgements

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Publication history

Received: 26 May 2014

Revised: 14 July 2014

Accepted: 14 August 2014

Published: 21 October 2014

Issue date: December 2014

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Acknowledgements

This work is supported by Hundreds Talent Program of Chinese Academy of Science.

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This article is published with open access at Springerlink.com

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