Abstract
Microwave-synthesized SiO2-reinforced B-N-co-doped reduced graphene oxide (SiO2-B-N-GO) nanocomposites were characterized by X-ray photon spectroscopy (XPS), X-ray diffraction (XRD), infrared (IR) spectroscopy, and transmission electron microscopy/energy dispersive X-ray (TEM/EDX) analysis. The tribological properties of the SiO2-B-N-GO prepared as anti-wear additives for enhanced lubrication were studied using a four-ball tester. The experiment results indicated that SiO2-B-N-GO exhibits excellent load-carrying, anti-wear, and anti-friction properties in a base oil, especially at the optimal concentration of additives at 0.15 wt%. The wear scar diameter decreased from 0.70 to 0.37 mm and the coefficient of friction was reduced from 0.092 to 0.070, which reductions are attributed to the formation of B-N and graphene layer tribofilms of several tens of nanometers in thickness that prevented direct contact between metals.
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Acknowledgements
The authors gratefully acknowledge the financial assistance provided by the National Natural Science Foundation of China (No. 51804166), Natural Science Foundation of Jiangsu Province (No. BK20181026), Project funded by China Postdoctoral Science Foundation (No. 2019M661461), Opening Project of Jiangsu Key Laboratory of Advanced Structural Materials and Application Technology Foundation (No. ASMA201907), and Natural Science General Program of Jiangsu Province (No. 18KJB130003). Thanks are also extended to all individuals associated with this project.
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Sang XIONG. She received her Ph.D. degree in materials science and engineering in 2017 from University of Science and Technology Beijing, China. After then, she joined the Nanjing Institute of Technology. Her current position is an associate professor and deputy of Institute for Material Near Net-shape Forming Technology. Her research covers the lubricants, the tribology of metal-forming, and tribochemistry.
Baosen ZHANG. He received his M.S. degree in materials science from Jiangsu University in 2004 and Ph.D. degree in materials processing engineering from Shanghai Jiaotong University in 2011. He joined the School of Materials Science and Engineering of Nanjing Institute of Technology from 2011. His current professional position is a professor. His research interests cover the surface coatings technology, and the friction and wear characteristics of metallic materials.
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Xiong, S., Zhang, B., Luo, S. et al. Preparation, characterization, and tribological properties of silica-nanoparticle-reinforced B-N-co-doped reduced graphene oxide as a multifunctional additive for enhanced lubrication. Friction 9, 239–249 (2021). https://doi.org/10.1007/s40544-019-0331-1
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DOI: https://doi.org/10.1007/s40544-019-0331-1