par De Graeve, Iris;Van De Walle, J.;Terryn, Herman 
Référence Transactions of the Institute of Metal Finishing, 79, 1, page (22-26)
Publication Publié, 2001-01
Référence Transactions of the Institute of Metal Finishing, 79, 1, page (22-26)
Publication Publié, 2001-01
Article révisé par les pairs
| Résumé : | AC-electrochemical cleaning and AC-anodising of rolled AA1050 in phosphoric acid have been investigated under constant AC-current conditions. Inductively coupled plasma optical emission spectrometry (ICP-OES) and potential response measurements demonstrate the transition from AC-anodising to AC-cleaning for different electrolyte concentrations and current densities. The mechanisms of the anodic and cathodic reactions reveal themselves in the respective potential responses. With TEM a thin non-porous oxide film of less than 10 nm is observed on the AC-cleaned substrate. AES depth profiling reveals the presence of remnant phosphorus from the electrolyte in the thin surface oxide layer. |
