Optimisation and characterisation of tungsten thick coatings on copper based alloy substrates

B. Riccardi, R. Montanari, M. Casadei, G. Costanza, G. Filacchioni, A. Moriani

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Tungsten is a promising armour material for plasma facing components of nuclear fusion reactors because of its low sputter rate and favourable thermo-mechanical properties. Among all the techniques able to realise W armours, plasma spray looks particularly attractive owing to its simplicity and low cost. The present work concerns the optimisation of spraying parameters aimed at 4-5 mm thick W coating on copper-chromium-zirconium (Cu,Cr,Zr) alloy substrates. Characterisation of coatings was performed in order to assess microstructure, impurity content, density, tensile strength, adhesion strength, thermal conductivity and thermal expansion coefficient. The work performed has demonstrated the feasibility of thick W coatings on flat and curved geometries. These coatings appear as a reliable armour for medium heat flux plasma facing component. © 2006 Elsevier B.V. All rights reserved.
Original languageEnglish
Pages (from-to)29 - 35
Number of pages7
JournalJournal of Nuclear Materials
Issue number1-3
Publication statusPublished - 30 Jun 2006
Externally publishedYes


All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials

Cite this

Riccardi, B., Montanari, R., Casadei, M., Costanza, G., Filacchioni, G., & Moriani, A. (2006). Optimisation and characterisation of tungsten thick coatings on copper based alloy substrates. Journal of Nuclear Materials, 352(1-3), 29 - 35. https://doi.org/10.1016/j.jnucmat.2006.02.069