Preparation, characterization, and tribological properties of silica-nanoparticle-reinforced B-N-co-doped reduced graphene oxide as a multifunctional additive for enhanced lubrication

• Published in: Friction Vol. 9; no. 2; pp. 239 - 249
• Main Authors: Xiong, Sang, Zhang, Baosen, Luo, Shuai, Wu, Hao, Zhang, Zhen
• Format: Journal Article
• Language: English
• Published: Beijing Tsinghua University Press 01.04.2021; Springer Nature B.V; College of Materials Science and Engineering,Nanjing Institute of Technology,Nanjing 211167,China; School of Materials Science and Engineering,Shanghai University,Shanghai 200000,China%College of Materials Science and Engineering,Nanjing Institute of Technology,Nanjing 211167,China; Jiangsu Key Laboratory of Advanced Structural Materials and Application Technology,Nanjing 211167,China%College of Materials Science and Engineering,Nanjing Institute of Technology,Nanjing 211167,China; Jiangsu Key Laboratory of Advanced Structural Materials and Application Technology,Nanjing 211167,China; SpringerOpen
• Subjects: Additives; Antiwear additives; Coefficient of friction; Corrosion and Coatings; Diameters; Engineering; Four ball testers; Friction reduction; Graphene; Infrared spectroscopy; Lubrication; material characterization; Mechanical Engineering; Mechanical properties; Nanocomposites; Nanoparticles; Nanotechnology; Physical Chemistry; Research Article; Silicon dioxide; SiO2-B-N-GO nanocomposites; Spectrum analysis; Surfaces and Interfaces; Thickness; Thin Films; tribological properties; Tribology; Wear resistance; X ray photoelectron spectroscopy; SiO; material characterization; tribological properties; B-N-GO nanocomposites; SiO2–B–N–GO nanocomposites
• ISSN: 2223-7690; 2223-7704
• DOI: 10.1007/s40544-019-0331-1

Microwave-synthesized SiO 2 -reinforced B-N-co-doped reduced graphene oxide (SiO 2 -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 SiO 2 -B-N-GO prepared as anti-wear additives for enhanced lubrication were studied using a four-ball tester. The experiment results indicated that SiO 2 -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.