A new one-dimensional tungsten carbide nanostructured material

Keller, Nicolas; Pietruszka, Barbara; Keller, Valérie

doi:10.1016/j.matlet.2005.12.017

Cited by 30 publications

(17 citation statements)

References 17 publications

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“…This type of WC nucleation, also reported in [15,16], suggest that the energy of the WC-W interface is higher preventing the islands from forming a continuous layer in the early stage.…”

Section: Results and The Discussionsupporting

confidence: 70%

Carbide formation in tungsten coatings on carbon-fibre reinforced carbon substrates

et al. 2013

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Tungsten coatings with molybdenum interlayer deposited on carbon-fibre reinforced carbon (CFC) substrates were selected as the first wall material for the divertor in the ITERlike Wall Project at Joint European Torus. For such a layered structure, diffusion of carbon from the CFC substrate towards the Mo and W deposits is expected during the operation of the reactor. As both molybdenum and tungsten form stable carbides, brittle compounds may form at the interface, thus strongly affecting the thermomechanical performance of the coated tiles. For the purpose of prediction of the operation time of such coated tiles, carbon diffusion and carbide formation kinetics need to be determined.In the present study, W/Mo/CFC samples were subjected to heat treatment at 1470 K for various annealing times. The Focused Ion Beam technique was used for sample preparation for electron microscopy examinations. Transmission electron microscopy observations supported with diffraction pattern analyses revealed the both W 2 C and WC carbides in the W coating, as well as that of Mo 2 C carbide in the Mo layer. The results were used to estimate the kinetics of coatings degradation.2

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“…This type of WC nucleation, also reported in [15,16], suggest that the energy of the WC-W interface is higher preventing the islands from forming a continuous layer in the early stage.…”

Section: Results and The Discussionsupporting

confidence: 70%

Carbide formation in tungsten coatings on carbon-fibre reinforced carbon substrates

et al. 2013

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show abstract

“…Nanocrystalline tungsten carbide was synthesised in a fashion similar to the temperature-programmed reaction as described in [20]. XC72R carbon (Cabot Corp., BET surface area: 237 m 2 g −1 ) was added to an aqueous solution of ammonium paratungstate (99%, Riedel-de Haen) in nitric acid (analytical grade) of pH 4 using molar quantities designed to satisfy the stoichiometries of reactions (1) and (2) as follows:…”

Section: Electrocatalyst Synthesismentioning

confidence: 99%

Electrocatalysis by nanocrystalline tungsten carbides and the effects of codeposited silver

Brady

Rees

Burstein

2008

Journal of Power Sources

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“…Alongside bulk W/C materials, an increasing interest has been devoted recently to new nano-sized systems such as W/C nanopowders [9][10][11], nanowires [12,13], nanotubes [14] and nanocomposites [15,16]; see also review [8].…”

Section: Introductionmentioning

confidence: 99%

Structural, electronic properties and stability of tungsten mono- and semi-carbides: A first principles investigation

Suetin

Shein

Ivanovskiĭ

2009

Journal of Physics and Chemistry of Solids

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A new one-dimensional tungsten carbide nanostructured material

Cited by 30 publications

References 17 publications

Carbide formation in tungsten coatings on carbon-fibre reinforced carbon substrates

Carbide formation in tungsten coatings on carbon-fibre reinforced carbon substrates

Electrocatalysis by nanocrystalline tungsten carbides and the effects of codeposited silver

Structural, electronic properties and stability of tungsten mono- and semi-carbides: A first principles investigation

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