Abstract
Herein, a series of Ag coatings with different micro-dimples were fabricated on copper surfaces by laser surface texturing (LST) and magnetron sputtering. Multilayer graphene lubricating grease (MGLG) was prepared using multilayer graphene as an additive. The textured Ag coatings and MGLG were characterized. Moreover, the tribological and electrical performances of the textured Ag coatings under MGLG lubrication were investigated in detail. Results demonstrated that the textured Ag coating with an appropriate dimple diameter could exhibit improved tribological and electrical properties when compared to the non-textured Ag coating under MGLG lubrication. The characterization and analysis of the worn surfaces suggest that the synergetic effect of LST and MGLG contributes to these excellent tribological and electrical properties.
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This work is supported by the Natural Science Foundation of Beijing Municipality (No. 2172053) and National Natural Science Foundation of China (No. 51575181).
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Zhengfeng CAO. He received his Ph.D. degree from North China Electric Power University in 2019. After that, he is currently a lecturer at the School of Advanced Manufacturing Engineering, Chongqing University of Posts and Telecommunications. His research interests focus on tribology of mechanical and electrical equipment, and preparation and characteristics of lubricating materials.
Yanqiu XIA. He received his Ph.D. degree in mechanical engineering from Northeastern University, China, in 1999, and was selected as a professor (Hundreds Talent Program of Chinese Academy of Sciences) in 2007. He joined the School of Energy Power and Mechanical Engineer, North China Electric Power University in 2010. His current position is a professor. His research areas cover the tribology of mechanical and electrical equipment, oil monitoring, and artificial intelligence.
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Cao, Z., Xia, Y., Chen, C. et al. A synergetic strategy based on laser surface texturing and lubricating grease for improving the tribological and electrical properties of Ag coating under current-carrying friction. Friction 9, 978–989 (2021). https://doi.org/10.1007/s40544-020-0383-2
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DOI: https://doi.org/10.1007/s40544-020-0383-2