Abstract
The effects of copper nanowires (Cu NWs) and ionic liquid (1-butyl-3-methylimidazolium perchlorate, in short [BMIM] [ClO4]) on the tribological properties of ionic liquid under external voltages were explored using friction tests in this paper. The results showed that the ionic liquid with 0.15 wt.% Cu NWs after 60 days exhibited better lubricating property at a low voltage of 0.5 V. The worn surfaces characterized by SEM and XPS illustrated that the existence of the Cu2O could increase wear of friction pairs when Cu particles were oxidized. How the different forms of copper affect the lubrication of ionic liquid under external voltages were further discussed. This work provides a new thought of using metal ions to improve the lubrication performance of ionic liquids under external voltages.
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Acknowledgments
This work was supported by the National Natural Science Foundation of China (Grant No. 41872183, 51775044), the Pre-Research Program in National 13th Five-Year Plan (Grant No. 61409230603) and the Fundamental Research Funds for Central Universities (Grant No. 2652018095).
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Wang, Z., Zhu, L., Si, L. et al. Study on the Friction Behaviors of Copper Nanowires in Ionic Liquids under External Voltages. J. of Materi Eng and Perform 29, 5718–5727 (2020). https://doi.org/10.1007/s11665-020-05073-5
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DOI: https://doi.org/10.1007/s11665-020-05073-5