Hydroxyl-terminated ionic liquids functionalized graphene oxide with good dispersion and lubrication function

Gan, Chaoliang; Liang, Ting; Li, Wen; Fan, Xiaoqiang; Li, Xia; Li, Dongshan; Zhu, Minhao

doi:10.1016/j.triboint.2020.106350

Cited by 55 publications

(23 citation statements)

References 34 publications

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“…The suspension stability of nanoparticles as a lubricant additive is highly debatable due to the special structure and properties of nanoparticles that lead to agglomeration in water over a long period of time 43–45 . Thus, the suspension stability of the GO/PEG lubricant additive in water was verified by means of sedimentation and centrifugation 46,47 . Figure 3A represents the dispersion stability of the GO/PEG composite lubricant additive in water at different moments.…”

Section: Resultsmentioning

confidence: 99%

Inhibition of cold‐welding and adhesive wear occurring on surface of the 6061 aluminum alloy by graphene oxide/polyethylene glycol composite water‐based lubricant

Chen

Wei³

et al. 2021

Surface & Interface Analysis

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In this paper, graphene oxide/polyethylene glycol (GO/PEG) composite water‐based lubricant was prepared by an ultrasonic dispersion method, and characterized and analyzed by Fourier transform infrared (FT‐IR), Raman spectroscopy, X‐ray diffraction (XRD), X‐ray photoelectron spectroscopy (XPS), and thermogravimetric analysis (TGA). The suspension performance of GO/PEG composite water‐based lubricant in water was verified by static sedimentation and centrifugation, and then, the prepared GO/PEG composite water‐based lubricant was added into 304 stainless steel and 6061 aluminum alloy, and the coefficient of friction (COF) curve, average COF value, average wear rate, corresponding photomicrographs of balls and disks after wear, and energy‐dispersive spectrometer (EDS) elemental analysis were used to illustrate the lubrication effect and lubrication mechanism. The results show that the GO/PEG composite water‐based lubricant possesses excellent suspension ability in water, and the average COF value and wear rate of GO/PEG composite water‐based lubricant are reduced by 78.8% and 88.8%, respectively, compared with water lubrication. The excellent lubrication effect of GO/PEG composite water‐based lubricant can effectively reduce the cold‐welding and adhesive wear phenomenon, mainly because GO/PEG composite water‐based lubricant first fills the uneven surface of friction mating to form a high‐quality lubricating film and then because of the special space structure of GO and the low shear between GO layers and the synergistic lubrication effect of GO/PEG.

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Section: Resultsmentioning

confidence: 99%

Inhibition of cold‐welding and adhesive wear occurring on surface of the 6061 aluminum alloy by graphene oxide/polyethylene glycol composite water‐based lubricant

Chen

Wei³

et al. 2021

Surface & Interface Analysis

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“…Liquid lubricants are generally used for this purpose because they possess excellent flow and cooling properties. 85 Although, ZDDP is being used as lubricant additives from decades, however, it generates sulfur and zinc in large amounts that choke the exhaust system of an engine. 86 According to recent literature, ionic liquids have emerged as promising lubricant additive due to their variety of functionalities.…”

Section: Lubrication Mechanism Of Ionic Liquidsmentioning

confidence: 99%

A review on tribological performance of ionic liquids as additives to bio lubricants

Naveed

Zahid

Mufti

et al. 2020

Proceedings of the Institution of Mechanical Engineers, Part J:

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All the moving components in an internal combustion engine require a lubricant that allows smooth sliding and/or rolling of interacting surfaces. Lubricant not only minimizes the friction and wear but also dissipates the heat generated due to friction and removes debris from the area of contact. Environmental concerns, decreasing mineral oil reserves and difficult disposal of nonbiodegradable conventional lubricants have urged the researchers to shift towards environmental-friendly lubricants. Number of tribological studies carried out in the past have proved that ionic liquid-based bio-lubricants are sustainable and biodegradable alternative to mineral oils. This paper presents a brief review of properties of ionic liquids and their ability to reduce friction and wear between the interacting surfaces. Tribological performance and compatibility of ionic liquids with various base-oils have been compared under boundary lubrication. The results reveal that phosphonium-based ionic liquids namely tetra-decyl tri-hexyl phosphonium bis(2,4,4-trimethylpentyl) phosphinate (P66614)i(C8)2PO2 and tri-hexyl tetra-decyl phosphonium bis(2-ethylhexyl) phosphate (P-DEHP) are more suitable for tribological applications. Since, ionic liquids can be tailored according to the application and millions of combinations are possible therefore, there is a need to summarize the published data in a more systematic and logical way.

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“…10 Stable graphene dispersion needed for EPD can be easily prepared by the Hummers' method (named GO colloidal). 11 Graphene film formed by the EPD method has already been explored in some fields, such as corrosion resistance, 12 lithium-ion battery electrodes, 13 and supercapacitors. 14 However, most of these works focused on improving the specific surface area and pay little attention to surface roughness, which is an important factor in reducing electrical resistance.…”

Section: Introductionmentioning

confidence: 99%

Electrochemically reduced graphene oxide (ERGO)-Cu bilayer structure fabricated at room temperature for future interconnects

et al. 2023

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Hydroxyl-terminated ionic liquids functionalized graphene oxide with good dispersion and lubrication function

Cited by 55 publications

References 34 publications

Inhibition of cold‐welding and adhesive wear occurring on surface of the 6061 aluminum alloy by graphene oxide/polyethylene glycol composite water‐based lubricant

Inhibition of cold‐welding and adhesive wear occurring on surface of the 6061 aluminum alloy by graphene oxide/polyethylene glycol composite water‐based lubricant

A review on tribological performance of ionic liquids as additives to bio lubricants

Electrochemically reduced graphene oxide (ERGO)-Cu bilayer structure fabricated at room temperature for future interconnects

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