Friction properties of surface-fluorinated carbon nanotubes

Wal, Randy Vander; Miyoshi, Kazuhisa; Street, Kenneth W.; Tomasek, Aaron J.; Peng, Haowei; Liu, Y.; Margrave, John L.; Khabashesku, Valéry N.

doi:10.1016/j.wear.2005.02.082

Cited by 65 publications

(37 citation statements)

References 11 publications

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“…In both cases, the wear scar diameter decreases slightly with increasing concentration of MWCNTs when the concentration of MWCNT is lower than 0.1 wt%. It is expected from figures 5 and 6 that the best effect on wear resistance and friction reduction may be achieved when the concentration of the MWCNTs is around 0.1 wt% [10].…”

Section: Wear Resistance and Frictional Propertiesmentioning

confidence: 94%

Tribological behaviors of surfactant-functionalized carbon nanotubes as lubricant additive in water

2006

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The multi-walled carbon nanotubes (MWCNTs) are functionalized by self-assembled surfactant layers after sonication in anionic surfactant sodium dodecyl sulfate (SDS) aqueous solution. The tribological properties of the SDS-functionalized MWCNTs as additive in water-based lubricants were evaluated with a four-ball tester. The results show that the SDSfunctionalized MWCNTs exhibit good anti-wear and friction reduction properties as well as enhanced load-carrying capacity. The maximum non-seizure load (PB value) can be raised about 3-7 times when SDS-functionalized MWCNTs were added into water. The mechanism of SDS-functionalized MWCNT additive was investigated with scanning electron microscopy (SEM), Auger electron spectroscopy (AES), and Raman spectroscopy. These preliminary results show a promise in applications of surfactant functional carbon nanotubes as an additive in water.

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Section: Wear Resistance and Frictional Propertiesmentioning

confidence: 94%

Tribological behaviors of surfactant-functionalized carbon nanotubes as lubricant additive in water

2006

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“…Previous studies showed noticeable lubrication performances for surface-fluorinated singlewalled carbon nanotubes as ultra low friction properties were observed [13].…”

Section: Introductionmentioning

confidence: 98%

“…13 C MAS NMR (10 kHz spinning rate) spectrum collected on CNF-Fs fluorinated at T F = 472°C[15]. Four peaks are easily identified (relative contribution in solid lines) at chemical shifts of 42, 84, 120 and 140 ppm.…”

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confidence: 99%

Tribological Properties of Fluorinated Carbon Nanofibres

Pandorf¹,

Himmel²,

Mansot³

et al. 2009

Tribol Lett

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This work is concerned with the study of the tribological properties of fluorinated carbon nanofibres with various fluorination rates. The tribological tests, carried out in the presence of pentane and in air after liquid's evaporation demonstrate good friction properties for all the compounds (the friction coefficients ranging between 0.04 and 0.06 in the presence of pentane and between 0.07 and 0.09 in air). Raman analyses reveal that the friction process induces a partial deterioration of the carbon fibres and SEM studies show that the tribofilm is composed of individual fibres embedded in a more disordered carbonaceous matrix. The fibrous nature of the tribofilm and the experimental relationship between friction coefficient and fluorination rate strongly support that friction properties of fluorinated carbon nanofibres are governed by surface fibres interaction. The modification of the nanofibres surface tension by action of pentane or optimum fluorination rate leads to a lowering of interfibres interactions resulting in an improvement of the friction properties.

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“…In addition, several researchers 9, 10 demonstrated high or low frictions in vertically aligned CNTs in nanoscale. Vander Wal et al 11 inferred that chemical treatment significantly influenced the tribological behaviour of CNTs by comparing the friction coefficients of fluoro-nanotubes, pristine and chemically cut nanotubes. Some researchers, such as Men et al, 12 also studied the influence of different functional methods on polymer-derived CNT nanocomposite.…”

Section: Introductionmentioning

confidence: 99%

Tribological behaviour of multi-walled carbon nanotube films

2014

AIP Advances

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The tribological behaviours of three kinds of multi-walled carbon nanotube (MWCNT) films, flattened pristine film, film with mixed acid treatment and vertically aligned film, were investigated in air at room temperature using a universal tribometer-II. The results indicated that the flattened pristine film with less defects and oxidation had the best tribological behaviour. The vertically aligned film obtained the highest friction coefficient, and vertical orientation is perhaps the most crucial factor when high friction is needed.

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Friction properties of surface-fluorinated carbon nanotubes

Cited by 65 publications

References 11 publications

Tribological behaviors of surfactant-functionalized carbon nanotubes as lubricant additive in water

Tribological behaviors of surfactant-functionalized carbon nanotubes as lubricant additive in water

Tribological Properties of Fluorinated Carbon Nanofibres

Tribological behaviour of multi-walled carbon nanotube films

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