par Delplancke, Jean-Luc 
;Delplancke, Marie-Paule ;Winand, René
Référence Materials science forum, 185-188, page (267-274)
Publication Publié, 1995
;Delplancke, Marie-Paule ;Winand, René Référence Materials science forum, 185-188, page (267-274)
Publication Publié, 1995
Article révisé par les pairs
| Résumé : | The galvanostatic anodization of titanium substrates at high current density (higher than 50 A/m2 at room temperature) tends to the formation of a thin oxide film with preferential conducting channels inside a homogeneous non conducting matrix. The purpose of this paper is to compare the results obtained by different microscopies (optical microscopy, scanning electron microscopy, scanning transmission electron microscopy at high resolution with electron diffraction and atomic force microscopy) in order to identify the structure and the composition of these channels. These channels are formed by the contact of a small number (10 to 20) of submicronic (100 to 500 nm) crystals. All these crystals present the same crystallographic orientation perpendicular to the substrate. The aggregates are protruding from the relatively flat oxide surface. The different microscopies provide complementary results. |
