Study on Dispersion Stability and Friction Characteristics of C60 Nanomicrosphere Lubricating Additives for Improving Cutting Conditions in Manufacturing Process

Abstract

Antifriction lubrication is an important research hotspot in the manufacturing field. A high-performance lubricating additive is of great significance for condition monitoring in the metal cutting process system. To improve cutting conditions in manufacturing process, we study the dispersion stability and tribological properties of fullerene nanoparticles in HM32 antiwear lubricating fluid. Fullerene nanoparticles are fully integrated into HM32 antiwear lubricating fluid by electromagnetic stirring and ultrasonic oscillation. The dispersion stability of fullerene nanoparticles in HM32 antiwear lubricating fluid was comprehensively studied by microscope scanning experiment, static sedimentation experiment, and absorption experiment. The four-ball friction experiment was operated to investigate the extreme pressure property and tribological property of lubricating fluids with fullerene concentration ranging from 100 ppm to 1000 ppm. The results show that fullerene nanoparticle can significantly improve the extreme pressure property and wear resistance of HM32 basic lubricating fluid. Meanwhile, we found that an excessively high concentration of fullerene nanoparticles will increase the friction and wear of the four-ball friction pair. The best concentration of fullerene nanoparticles is 200 ppm. When the fullerene concentration reaches 200 ppm, the maximum nonsintering load is significantly increased, and the friction coefficient and the steel ball wear scar diameter are significantly reduced.

Tribological performances of MoS2/C60 nanocomposite as lubricating additive in dioctyl sebacate

“…This result confirms that MoS 2 /C 60 has the best wear resistance among the three additives. From Figure 8(c), it can be seen that the friction surface after DOS lubrication containing C 60 is flatter relative to that after pure DOS lubrication, and there are almost no pits and grooves appearing on the wear surface, which is related to the fact that C 60 enters into the friction interface and improves the interfacial load-bearing capacity (Huang et al , 2021).…”

“…From Figure 5(e)–5(f), it can be clearly seen that the absorbance values of the C 60 and MoS 2 /C 60 suspensions slightly decreased with the increase of the standing time, but the change was not significant, which indicated that the concentration of C 60 and MoS 2 /C 60 nanoparticles did not change significantly and the dispersion stability was good. This may be since fullerene C 60 has a certain aromaticity and can be well dissolved in organic solvents (Huang et al , 2021). The absorbance of the MoS 2 suspensions varied greatly, with 60% of the absorbance of the suspensions left for 20 days compared with the newly configured suspensions, which is consistent with the results of the conventional sedimentation experiments.…”

“…We followed the same method to prepare pure nano-MoS 2 without C 60 . The ratios of the components in the composites have a certain influence on the composites (Lu et al , 2019; Hu et al , 2023), and based on previous studies (Huang et al , 2021; Li et al , 2023b) and economic considerations, we chose a relatively low amount of C 60 addition.…”

“…Ku et al (2010) found that fullerene C 60 nanoparticles present in the oil reduce the contact with the metal surfaces and increase the oil’s load-bearing capacity to improve the lubricating properties of friction surfaces. Huang et al (2021) incorporated C 60 nanoparticles into HM32 anti-wear lubricating fluid, and four-ball friction experiments demonstrated that C 60 nanoparticles could significantly improve the extreme pressure performance and wear resistance of HM32 anti-wear lubricating fluid. Li et al (2023b) improved the tribological properties of graphene on rough Si/SiO 2 substrates by filling the surface of the substrate with C 60 , and the high mechanical strength of the C 60 molecules made graphene’s The high mechanical strength of C 60 molecules enhanced the load-bearing capacity of graphene by more than five times, which greatly improved its wear resistance on rough substrates.…”

Study on Chaotic Characteristics of the Friction Process between High Hardness Alloy Steel and Cemented Carbide under C60 Nanoparticle Fluid Lubrication

“…At present, the research on cutting friction and tool wear focuses on improving lubrication and cooling conditions [6][7][8], tool wear mechanisms [9][10][11], and tool wear monitoring [12][13][14]. The contact friction system between the tool and the workpiece in the cutting process is a nonlinear chaotic dynamic system.…”