Revealing the lubrication mechanism of fluorographene nanosheets enhanced GTL-8 based nanolubricant oil

Ci, Xiaojing; Zhao, Wenjie; Luo, Jun; Wu, Yansheng; Ge, Tianhao; Shen, Lu; Gao, Xiulei; Fang, Zhiwen

doi:10.1016/j.triboint.2019.05.044

Cited by 35 publications

(14 citation statements)

References 37 publications

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“…Furthermore, the researchers reported that fluorinated graphene formed a protective film on the contact surface. In addition, as reported in our previous studies, FG displayed excellent friction reduction and wear resistant properties when used as a lubricant additive, and it also strengthened mechanical strength and improved the tribological properties of polyimide polymer (PI) when it was incorporated into PI nanocomposites. − …”

Section: Introductionsupporting

confidence: 64%

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TiO₂ Nanoparticle/Fluorinated Reduced Graphene Oxide Nanosheet Composites for Lubrication and Wear Resistance

Zhao

2020

ACS Appl. Nano Mater.

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The preparation of TiO2/F-rGO nanocomposites by an in situ synthesis method was discussed, and the nanocomposites were used as lubricant additives. The morphology and structure of TiO2/F-rGO nanocomposites showed that there was an excellent link between TiO2 nanoparticles and F-rGO nanosheets. The tribological results showed that TiO2/F-rGO nanocomposites as lubricant additives displayed a low coefficient of friction and excellent wear resistance capacity. Furthermore, it was illustrated that the TiO2 nanoparticles and the F-rGO nanosheets in the TiO2/F-rGO nanocomposites had a synergistic lubricating effect. The coefficient of friction(COF) and wear rate of the TiO2/F-rGO nanocomposites decreased by 33.67% and 88.38%, respectively, compared with those of pure oil, suggesting that these nanocomposites display excellent application prospects as novel lubricant additives.

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Section: Introductionsupporting

confidence: 64%

“…F-rGO was synthesized as reported previously. 39 First, we put the rGO powder into a Teflon autoclave with F 2 and N 2 (8:2, in volume); then, the Teflon autoclave was heated to 100 °C for 24 h. The resulting sample was labeled F-rGO and had a F/C atomic ratio of approximately 0.44.…”

Section: Methodsmentioning

confidence: 99%

TiO₂ Nanoparticle/Fluorinated Reduced Graphene Oxide Nanosheet Composites for Lubrication and Wear Resistance

Zhao

2020

ACS Appl. Nano Mater.

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“…The D band represents the presence of defects in the carbon-based body and the G band is presented owing to the in-plane vibration of sp 2 carbon atoms. This indicates that a hybrid material Nb 2 C/Nb 2 O 5 /C was produced [29,30].…”

Section: Structural Transformation Of Nb 2 C Nanosheets With Differenmentioning

confidence: 90%

Regulating the Nb2C nanosheets with different degrees of oxidation in water lubricated sliding toward an excellent tribological performance

Cheng

Zhao

2021

Friction

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Novel two-dimensional (2D) Nb2C nanosheets were successfully prepared through a simple lultrasonic and magnetic stirring treatment from the original accordion-like powder. To further study their water-lubrication properties and deal with common oxidation problems, Nb2C nanosheets with different oxidation degrees were prepared and achieved long-term stability in deionized water. Scanning electron microscope (SEM), transmission electron microscope (TEM), scanning probe microscope (SPM), X-ray powder diffraction (XRD), Raman, and X-ray photoelectron spectrometer (XPS) experiments were utilized to characterize the structure, morphology, and dispersion of Nb2C nanosheets with different degrees of oxidation. The tribological behaviors of Nb2C with different degrees of oxidation as additives for water lubrication were characterized using a UMT-3 friction testing machine. The wear scars formed on the 316 steel surface were measured using three-dimensional (3D) laser scanning confocal microscopy. The tribological results showed that a moderately oxidized Nb2C nanosheet, which owned the composition of Nb2C/Nb2O5/C, displayed excellent tribological performance, with the friction coefficient (COF) decreasing by 90.3% and a decrease in the wear rate by 73.1% compared with pure water. Combining the TEM and Raman spectra, it was shown that Nb2O5 nanoparticles filled in the worn zone, and the layered Nb2C and C were adsorbed into the surface of the friction pair to form a protective lubricating film. This combined action resulted in an excellent lubricating performance.

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“…Furthermore, low graphitic loadings (sub-10 wt%) into copper films greatly diminish frictional losses under low contact pressure nano-and macrotribological testing. 44,45,21 Fluorographenes have been utilized in oil-based [46][47][48][49] and polymer-based [50][51][52] lubricating formulations. However, the incorporation of fluorographenes into metal composites have scarcely been explored.…”

Section: Introductionmentioning

confidence: 99%

Enhanced tribological properties of copper metal-matrix composites reinforced with fluorinated graphene oxide nanosheets

Savjani

Mercadillo

Hodgeman

et al. 2023

Preprint

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Applications of copper coatings on metal components are abundant owing to their high conductivities, corrosion resistance and anti-bacterial properties. However, applications of these coatings on moving parts are limited due to their poor tribological properties; tendencies to generate high friction and susceptibility to degradative wear. In this study, we have fabricated a fluorinated graphene oxide-copper metal matrix composite (FGO-CMMC) on a bearing steel substrate by a simple electrodeposition process in water. The FGO-CMMC coatings exhibited excellent lubrication performance under pin-on-disk (PoD) tribological sliding, which reduced CoF by 63 and 69%, compared to the GO-CMMC and pure copper coatings that were also prepared. The lubrication enhancement of the FGO-CMMCs is attributed to the tribochemical reaction of FGO with the AISI 52100 steel counterface initiated by sliding load. The formation of an asymmetric tribofilm structure on the sliding track is critical; the performance of the FGO/Cu tribofilm formed in the track is boosted by the continued fluorination of the counterface surface during PoD sliding, passivating the tribosystem from adhesion-driven breakdown. Other influences include the improved interlaminar shear strength of the FGO-containing composite. The excellent lubrication performance of copper coatings by FGO incorporation makes the CMMC a promising solid lubricant candidate for use in mechanical engineering applications.

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Revealing the lubrication mechanism of fluorographene nanosheets enhanced GTL-8 based nanolubricant oil

Cited by 35 publications

References 37 publications

TiO₂ Nanoparticle/Fluorinated Reduced Graphene Oxide Nanosheet Composites for Lubrication and Wear Resistance

TiO₂ Nanoparticle/Fluorinated Reduced Graphene Oxide Nanosheet Composites for Lubrication and Wear Resistance

Regulating the Nb2C nanosheets with different degrees of oxidation in water lubricated sliding toward an excellent tribological performance

Enhanced tribological properties of copper metal-matrix composites reinforced with fluorinated graphene oxide nanosheets

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Revealing the lubrication mechanism of fluorographene nanosheets enhanced GTL-8 based nanolubricant oil

Cited by 35 publications

References 37 publications

TiO2 Nanoparticle/Fluorinated Reduced Graphene Oxide Nanosheet Composites for Lubrication and Wear Resistance

TiO2 Nanoparticle/Fluorinated Reduced Graphene Oxide Nanosheet Composites for Lubrication and Wear Resistance

Regulating the Nb2C nanosheets with different degrees of oxidation in water lubricated sliding toward an excellent tribological performance

Enhanced tribological properties of copper metal-matrix composites reinforced with fluorinated graphene oxide nanosheets

Contact Info

Product

Resources

About

TiO₂ Nanoparticle/Fluorinated Reduced Graphene Oxide Nanosheet Composites for Lubrication and Wear Resistance

TiO₂ Nanoparticle/Fluorinated Reduced Graphene Oxide Nanosheet Composites for Lubrication and Wear Resistance