Graphene oxide in water lubrication on diamond-like carbon vs. stainless steel high-load contacts

Elomaa, Oskari; Singh, Vivek Kumar; Iyer, Ajai; Hakala, Timo J.; Koskinen, Jari

doi:10.1016/j.diamond.2014.12.003

Cited by 106 publications

(64 citation statements)

References 33 publications

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“…Coatings of tetrahedral amorphous carbon (ta-C) have been widely studied for the last thirty years due to their excellent mechanical and protective properties together with biocompatibility [1][2][3][4][5][6][7][8][9][10][11][12][13][14]. Development and scaling of the coating technology resulted commercial application of ta-C as wear resistance [11] and load-bearing biomedical layers [12][13][14].…”

Section: Introductionmentioning

confidence: 99%

Ultrathin undoped tetrahedral amorphous carbon films: The role of the underlying titanium layer on the electronic structure

Protopopova

Iyer

Kondrateva

et al. 2015

Diamond and Related Materials

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Section: Introductionmentioning

confidence: 99%

Ultrathin undoped tetrahedral amorphous carbon films: The role of the underlying titanium layer on the electronic structure

Protopopova

Iyer

Kondrateva

et al. 2015

Diamond and Related Materials

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“…It was also reported that GO aqueous dispersion can reduce friction between diamond-like carbon and stainless steel. When the GO concentration was increased from 0 to 1.0 wt.%, there was a continuous decrease in the COF from 0.14 to 0.06 [30].…”

Section: Introductionmentioning

confidence: 99%

Tribological behavior of nanocarbon materials with different dimensions in aqueous systems

Yang

Zeng

2018

Friction

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Due to the widespread use of nanocarbon materials (NCMs), more researchers are studying their tribological performances. In this work, the tribological behaviors of the following five types of NCMs with different geometric shapes were evaluated in a novel oil-in-water system: spherical fullerenes (C60, 0D), tubular multi-walled carbon nanotubes (MWCNT, 1D), sheet graphene oxide (GO, 2D), sheet graphene oxide derivative (Oct-O-GO, 2D), and lamellar graphite (G, 3D). Among these, GO with two types of oxidation degrees, i.e., GO(1), GO(2), and Oct-O-GO(1) were synthesized and characterized using Fourier-transform infrared spectroscopy, Raman spectroscopy, x-ray diffraction, thermogravimetric analysis, scanning electron microscopy, and contact angle measurements. The load-carrying capacity of the NCM emulsions were evaluated using a four-ball test machine, and the lubrication performances were investigated using a high-frequency reciprocating friction and wear tester with a sliding distance of 1,800 mm under different loads (50 N and 100 N) at 0.5 Hz. The results revealed that the Oct-O-GO(1) emulsion exhibited the best load-carrying capacity, and the best friction-reducing and anti-wear properties compared to other emulsions. Moreover, the anti-wear advantage was more prominent under high load conditions, whereas the other emulsions exhibited a certain degree of abrasive or adhesive wear. The lubrication mechanism was determined through the analysis of worn surfaces using scanning electron microscopy/energy-dispersive x-ray spectroscopy, micro-Raman spectroscopy, and x-ray photoelectron spectroscopy. The results revealed that during frictional sliding, the ingredients in the emulsion can absorb and react with the freshly exposed metal surface to form surface-active films to protect the surfaces from abrasion. Moreover, it was found that the higher the amount of ingredients that contain alkyl and O-H/C=O, the better was the lubrication performance in addition to an increase in the carbon residue in the tribofilm generated on the meal surface.

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“…The size of nanoparticles lies between 1 and 100 nm. The tribological performance of nanoparticles as fluid additives has been investigated by many investigators . Most previous studies showed that many types of nanoparticles lower the wear and friction compared with base fluids during metal‐to‐metal sliding.…”

Section: Introductionmentioning

confidence: 99%

“…The tribological performance of nanoparticles as fluid additives has been investigated by many investigators. [2][3][4][5][6][7][8][9][10][11][12][13][14][15] Most previous studies showed that many types of nanoparticles lower the wear and friction compared with base fluids during metal-to-metal sliding. A few research studies have investigated the tribological properties of nanofluid-lubricated ceramic specimens.…”

Section: Introductionmentioning

confidence: 99%

Tribological performance of oil‐based ZnO and diamond nanofluids

Han

Barber

Zhang

et al. 2019

Lubrication Science

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In previous studies, few articles investigated the tribological properties of nanofluid‐lubricated ceramic specimens. Therefore, this research focused on the tribological performance of an alumina ball sliding against a steel plate lubricated with ZnO or diamond nanofluids using oleic acid as surfactant. The coefficient of friction obtained with various concentrations of ZnO and diamond nanoparticles was approximately constant at 0.08. Scanning electron microscopy (SEM) was used to explore the possible mechanisms of wear with the nanofluids. Generally, as the diamond or ZnO concentration of nanoparticles with oleic acid increases, the disk and ball wear increase. The higher concentration of nanoparticles leads to enhanced three‐body abrasive wear. Diamond nanofluids produced higher ball wear than ZnO nanofluids. The hard diamond particles likely embedded in the disk and/or acted as third‐body particles, which abraded the ball at a high rate.

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Graphene oxide in water lubrication on diamond-like carbon vs. stainless steel high-load contacts

Cited by 106 publications

References 33 publications

Ultrathin undoped tetrahedral amorphous carbon films: The role of the underlying titanium layer on the electronic structure

Ultrathin undoped tetrahedral amorphous carbon films: The role of the underlying titanium layer on the electronic structure

Tribological behavior of nanocarbon materials with different dimensions in aqueous systems

Tribological performance of oil‐based ZnO and diamond nanofluids

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