Flexible graphene oxide/poly(ethylene glycol) composite films for lubrication application

Li, Chengzhi; Lu, Hailin; Xu, Guowen; Hu, Feng; Wang, Lisha; Li, Jianhui

doi:10.1016/j.matchemphys.2021.125491

Cited by 7 publications

(7 citation statements)

References 39 publications

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“…(2) Also due to the instantaneous high energy input during MAO reaction process, Al 2 O 3 crystalline phases such as a-Al 2 O 3 and g-Al 2 O 3 start to form, which leads to a significant increase in the hardness of the coating. The aluminum alloy samples obtained after MAO treatment are shown in Figure 5(c) (Li et al, 2022a;Li et al, 2022b).…”

Section: Surface Analysis Of Aluminum Alloy Sample After Micro-arc Ox...mentioning

confidence: 99%

Tribological properties of aluminum alloy coated with graphene oxide/polyvinyl alcohol composites after micro-arc oxidation

Sun,

Fan,

Yang

et al. 2024

ILT

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Purpose Aluminum alloy is considered an ideal material in aerospace, automobile and other fields because of its lightweight, high specific strength and easy processing. However, low hardness and strength of the surface of aluminum alloys are the main factors that limit their applications. The purpose of this study is to obtain a composite coating with high hardness and lubricating properties by applying GO–PVA over MAO coating. Design/methodology/approach A pulsed bipolar power supply was used as power supply to prepare the micro-arc oxidation (MAO) coating on 6061 aluminum sample. Then a graphene oxide-polyvinyl alcohol (GO–PVA) composite coating was prepared on MAO coating for subsequent experiments. Samples were characterized by Fourier infrared spectroscopy, X-ray diffraction, Raman spectroscopy and thermogravimetric analysis. The friction test is carried out by the relative movement of the copper ball and the aluminum disk on the friction tester. Findings Results showed that the friction coefficient of MAO samples was reduced by 80% after treated with GO–PVA composite film. Originality/value This research has made a certain contribution to the surface hardness and tribological issues involved in the lightweight design of aluminum alloys. Peer review The peer review history for this article is available at: https://publons.com/publon/10.1108/ILT-12-2023-0427/

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Section: Surface Analysis Of Aluminum Alloy Sample After Micro-arc Ox...mentioning

confidence: 99%

Tribological properties of aluminum alloy coated with graphene oxide/polyvinyl alcohol composites after micro-arc oxidation

Sun,

Fan,

Yang

et al. 2024

ILT

Self Cite

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“…The carbide is generally selected based on the product requirement, and then the temperature is set according to the properties of the carbide adopted. The polymer containing carbon or the graphene‐like substance is usually employed as the carbide in order to improve the wear resistance of the metal surface 15,16 …”

Section: Introductionmentioning

confidence: 99%

“…A large number of treatment methods are available for material surface modification, such as the microarc oxidation (MAO), [3][4][5] anodic oxidation, [6][7][8] chemical vapor deposition, 9,10 physical vapor deposition, 11,12 electroplate, 13,14 surface carbonization, 15,16 and so on. The MAO technology is a surface modification means of using high-voltage discharge to form an electric arc spark, which in turn penetrates the surface of the metal and grows the corresponding metal oxides in situ.…”

Section: Introductionmentioning

confidence: 99%

“…The polymer containing carbon or the graphene-like substance is usually employed as the carbide in order to improve the wear resistance of the metal surface. 15,16 The MAO and surface carbonization technologies can effectively reduce the wear of the Al substrate. However, the MAO coating surface containing micropores and microcracks has a high roughness which, together with the high hardness and brittleness of the coating, can make it suffer from severe plastic deformation (abrasive wear) under high load, resulting in poor wear resistance.…”

Section: Introductionmentioning

confidence: 99%

“…Li et al used the gradient heating to carbonize the bearing steel surface, which formed the graphene oxide/polyethylene glycol (PEG) composite lubricant and effectively reduced the wear situation of the metal substrate surface. 15 The carbonized coating is largely affected by the choice of carbide and the control of temperature. The carbide is generally selected based on the product requirement, and then the temperature is set according to the properties of the carbide adopted.…”

Section: Introductionmentioning

confidence: 99%

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Preparation and properties of wear‐resistant carbonized‐ceramic composite coating on pure aluminum surface

Shao

Chen

et al. 2022

Int J Applied Ceramic Tech

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In this paper, a new composite coating was prepared on the surface of pure aluminum (Al) by combining the micro‐arc oxidation (MAO) technology with the polyethylene glycol (PEG 400) carbonization technology. The composite coating and the single MAO coating were observed by a scanning electron microscope, and an energy‐dispersive spectrometer, finding that the single MAO coating surface with volcano‐like pores and microcracks, was covered by the carbonized layer of the composite coating where the overall coating thickness was around 19.5 µm, including 17.5 µm of inner MAO coating. The material properties of the composite coating were characterized by X‐ray diffraction and X‐ray photoelectron spectroscopy. The wear resistance of the composite coating was tested under dry friction conditions, finding that the wear width on the composite coating surface was 909.6 µm only, which was around 55.7%, 50.4%, and 58.2% of those for pure Al substrate, single carbonized coating, and single MAO coating, respectively. Then the comprehensive wear resistance of the composite coating was explored under different sliding speeds and lubrication mediums. Finally, the wear‐resisting mechanism of the composite coating was discussed, concluding that the composite coating could effectively reduce adhesive wear and abrasive wear of the Al substrate.

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Macroscale Ultradurable Antiwear Achieved on Graphene‐Based Films via Multiphase Combination

Chen,

Zhu,

Shi

et al. 2024

Adv Eng Mater

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Excellent anti‐wear performance, high bearing capacity, and long service life are essential prerequisites for the reliability and durability of Si‐based micro/nano device operation. To improve the anti‐wear property and prolong service life of Si‐based micro/nano devices under high loads, graphene oxide (GO) nanosheets, graphene quantum dots (GQDs) and ionic liquid‐capped GQDs (IL‐GQDs) were used to create three kinds of multilayer films as solid lubricant, that is, single‐component (GO)5, (GO/GQDs)5 and (GO/IL‐GQDs)5 multilayer films. The results showed that (GO/IL‐GQDs)5 composite multilayer possessed excellent wear resistance under a high load of 4 N with the wear rate of 4.9×10‐7 mm3·N‐1·m‐1. The superior anti‐wear performance of (GO/IL‐GQDs)5 composite film is mainly due to the unique 3D structure composed of GO nanosheets alternating with IL‐GQDs. The rigid GO nanosheets play the role in load‐carrying capacity, and the IL‐GQDs could delay the time of structure transformation and reduce the loss rate of transfer film, thereby effectively extending the service life of (GO/IL‐GQDs)5 composite multilayer. Such multilayers are expected to be good solid lubricating films suitable for Si‐based micro/nano devices.This article is protected by copyright. All rights reserved.

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Flexible graphene oxide/poly(ethylene glycol) composite films for lubrication application

Cited by 7 publications

References 39 publications

Tribological properties of aluminum alloy coated with graphene oxide/polyvinyl alcohol composites after micro-arc oxidation

Tribological properties of aluminum alloy coated with graphene oxide/polyvinyl alcohol composites after micro-arc oxidation

Preparation and properties of wear‐resistant carbonized‐ceramic composite coating on pure aluminum surface

Macroscale Ultradurable Antiwear Achieved on Graphene‐Based Films via Multiphase Combination

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