Synergistic lubricating effect of graphene/ionic liquid composite material used as an additive

Lincong LIU; Ming ZHOU; Youtang MO; Pengpeng BAI; Qilin WEI; Long JIN; Shengli YOU; Mingyue WANG; Liangchuan LI; Xin CHEN; Xiao LI; Yu TIAN

doi:10.1007/s40544-020-0442-8

Friction 2021, 9(6): 1568-1579 https://doi.org/10.1007/s40544-020-0442-8

Research Article |

Open Access | Issue | Published: 21 November 2020

Synergistic lubricating effect of graphene/ionic liquid composite material used as an additive

Show Author's Information Hide Author's Information Lincong LIU^¹, Ming ZHOU^¹(

), Youtang MO^¹, Pengpeng BAI^², Qilin WEI^³, Long JIN^¹, Shengli YOU^¹, Mingyue WANG^¹, Liangchuan LI^¹, Xin CHEN^¹, Xiao LI^⁴, Yu TIAN^²

1School of Mechanical and Transportation Engineering, Guangxi University of Science and Technology, Liuzhou 545006, China

2State Key Laboratory of Tribology, Tsinghua University, Beijing 100084, China

3Department of Electromechain and Automotive Engineering, Liuzhou City Vocational College, Liuzhou 535006, China

4Chengdu Carbon Co., Ltd., Chengdu 610100, China

Keywords:

synergistic lubrication, grapheme (G), ionic liquid (IL), protective films, out-of-plane puckering mechanism

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LIU L, ZHOU M, MO Y, et al. Synergistic lubricating effect of graphene/ionic liquid composite material used as an additive. Friction, 2021, 9(6): 1568-1579. https://doi.org/10.1007/s40544-020-0442-8

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Abstract

We prepared a graphene/ionic liquid (G/IL) composite material by the hybridization of G and an IL for use as a lubricating oil additive. The friction coefficient and wear volume of a base oil containing 0.04 wt% of the G/IL composite was reduced by 45% and 90%, respectively. Furthermore, the base oil containing the G/IL composite exhibited better lubricating properties than the base oil containing G, IL, or a mixture of IL and G at the same mass fraction. A synergistic lubrication mechanism was also revealed. The G/IL composite was adsorbed and deposited on the wear surface, forming a more ordered protective film and a unique tribochemical reaction film during rubbing. Therefore, the G/IL composite exhibited the synergistic lubricating effects of G and IL, which significantly improved the lubricating performance of the base oil. This study also suggested a way to limit the out-of-plane puckering of G at the macroscale.

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About this article

Synergistic lubricating effect of graphene/ionic liquid composite material used as an additive

Show Author's information Hide Author's Information Lincong LIU^¹, Ming ZHOU^¹(

), Youtang MO^¹, Pengpeng BAI^², Qilin WEI^³, Long JIN^¹, Shengli YOU^¹, Mingyue WANG^¹, Liangchuan LI^¹, Xin CHEN^¹, Xiao LI^⁴, Yu TIAN^²

1School of Mechanical and Transportation Engineering, Guangxi University of Science and Technology, Liuzhou 545006, China

2State Key Laboratory of Tribology, Tsinghua University, Beijing 100084, China

3Department of Electromechain and Automotive Engineering, Liuzhou City Vocational College, Liuzhou 535006, China

4Chengdu Carbon Co., Ltd., Chengdu 610100, China

Abstract

Keywords: synergistic lubrication, grapheme (G), ionic liquid (IL), protective films, out-of-plane puckering mechanism

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Acknowledgements

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Publication history

Received: 20 May 2020

Revised: 28 July 2020

Accepted: 10 August 2020

Published: 21 November 2020

Issue date: December 2021

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Acknowledgements

This work was supported by the National Natural Science Foundation of China (Grant No. 12062002), Guangxi Natural Science Foundation (Grant No. 2018GXNSFAA138174), and the Science and Technology Development Plan of Liuzhou (No. 2018CB10508).

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