Preparation of tantalum carbide films by reaction of electrolytic carbon coating with the tantalum substrate

Laurent Massot (1) , Pierre Chamelot (1) , Pierre Taxil (1)

1 LGC - Laboratoire de Génie Chimique

This article demonstrates that coatings of tantalum carbide can be obtained by electrodeposition of carbon in molten fluorides on a tantalum substrate as an alternative to the CVD process. The structural characteristics of the carbon deposited by the electrolytic route lead to a high eactivity of this element towards a tantalum cathode to produce tantalum carbide. Mutual reactivity was shown to be enhanced if tantalum plate is replaced by an lectrodeposited layer of tantalum, where the fine microstructure provides a catalytic effect

Mots clés: Electrodeposition; Carbon; Tantalum carbide; Molten fluorides; Solid state diffusion

Domaines: Génie chimique

Laurent Massot, Pierre Chamelot, Pierre Taxil. Preparation of tantalum carbide films by reaction of electrolytic carbon coating with the tantalum substrate. Journal of Alloys and Compounds, 2006, 424 (1-2), pp.199-203. ⟨10.1016/j.jallcom.2005.09.095⟩. ⟨hal-03598003⟩