Topography of carbon fibre surfaces

Marshall, P.; Price, Joseph A.

doi:10.1016/0010-4361(91)90554-t

Cited by 31 publications

(9 citation statements)

References 5 publications

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“…Curve tting of the C 1s spectra of the IM7 carbon ber series However, the oxide III group showed a drastic increase when the treatment level was increased to 400%, indicating that prolonged oxidation led to possible attack of the basal carbons or increased the size of the etch pits resulting in the formation of new sites and higher oxygen incorporation . This is further corroborated by the STM investigation of the PAN bers by Marshall and Price [48], who have shown that oxidation leads to formation of etch pits transverse to the ber axis, which increase in size with further oxidation. There is a decrease in the levels of oxide IV group consisting of carbonates and ¼ -¼ ¤ shake-up transitions and the sixth group consisting of plasmons with increases in DFST.…”

Section: Effects Of Varying the Level Of Surface Treatment On Ber Chesupporting

confidence: 63%

Effect of surface oxygen content and roughness on interfacial adhesion in carbon fiber–polycarbonate composites

Raghavendran¹,

Drzal²,

Askeland³

2002

Journal of Adhesion Science and Technology

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The effect of surface chemistry and rugosity on the interfacial adhesion between Bisphenol-A Polycarbonate and a carbon ber surface subjected to surface treatment to add surface oxygen groups was investigated. The surface oxygen content of PAN based intermediate modulus IM7 carbon bers was varied by an oxidative surface treatment. The oxygen content of the carbon ber surface increased from 4 to 22% by changing the degree of surface treatment from 0 to 400% of nominal commercial surface treatment levels. The oxidative surface treatment also causes an increase in surface roughness by creating pores and ssures in the surface by removing carbon from the regions between the graphite crystallites. To decouple the effects of surface roughness and the surface oxides on the interfacial adhesion, the oxidized ber surface was passivated via hydrogenation at elevated temperature. Thermal hydrogenation removes the oxides on the surface without signi cantly altering the surface topography. The results of interfacial adhesion tests indicate that an increase in the oxygen content of the ber does not increase the ber-matrix interfacial adhesion signi cantly. Comparing adhesion results between oxidized and hydrogen passivated bers shows that the effect of the surface roughness on the interfacial adhesion is also insigni cant. Overall, dispersive interactions alone appear to be the primary factor in adhesion of carbon bers to thermoplastic matrices in composites.

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Section: Effects Of Varying the Level Of Surface Treatment On Ber Chesupporting

confidence: 63%

Effect of surface oxygen content and roughness on interfacial adhesion in carbon fiber–polycarbonate composites

Raghavendran¹,

Drzal²,

Askeland³

2002

Journal of Adhesion Science and Technology

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“…Scanning tunneling microscopy studies [28][29][30] Thus, the conventional CNT growth process was limited to a temperature range of 650 °C to 750 °C, with 700 °C being the optimum temperature to obtain high number…”

Section: Conventional Growthmentioning

confidence: 99%

Direct growth of carbon nanotubes on carbon fibers: Effect of the CVD parameters on the degradation of mechanical properties of carbon fibers

Greef

Zhang

Magrez

et al. 2015

Diamond and Related Materials

158

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“…16. The preferential exposure of the sheet edges can explain on an atomic level the significant increase of the fibre-matrix adhesion after activation, because the chemical reactivity of carbon atoms located on sheet edges is much higher than for atoms on the basal planes.…”

Section: Resultsmentioning

confidence: 98%

Surface structure of the PAN‐based carbon fibres studied by the scanning probe microscopy (SPM)

Zhdan

Grey

Castle

1994

Surface & Interface Analysis

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Scanning tunnelling microscopy (STM) and scanning force microscopy (SFM) have been applied to characterize the surface topography of carbon fibres before and after activating electrochemical treatment. Electrochemical activation is seen to have a significant effect on the structure of the surface layers. The influence of scanning parameters on STM and SFM images was examined and it was found that alteration of the scanning direction allows important additional information about surface structure of carbon fibres to be obtained. It also makes it possible to estimate the contribution of the artefacts to resulting images. The results indicate the great potential of both STM and SFM for three-dimensional surface characterization of carbon fibres.

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Topography of carbon fibre surfaces

Cited by 31 publications

References 5 publications

Effect of surface oxygen content and roughness on interfacial adhesion in carbon fiber–polycarbonate composites

Effect of surface oxygen content and roughness on interfacial adhesion in carbon fiber–polycarbonate composites

Direct growth of carbon nanotubes on carbon fibers: Effect of the CVD parameters on the degradation of mechanical properties of carbon fibers

Surface structure of the PAN‐based carbon fibres studied by the scanning probe microscopy (SPM)

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