AC-impedance measurements on aluminium barrier type oxide films
✍ Scribed by J. Bessone; C. Mayer; K. Jüttner; W.J. Lorenz
- Publisher
- Elsevier Science
- Year
- 1983
- Tongue
- English
- Weight
- 434 KB
- Volume
- 28
- Category
- Article
- ISSN
- 0013-4686
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## Abstract We have performed this study on oxide films sealed or not in boiling water. The films are first obtained on type 1050 A aluminium substrat by pulsed tensions anodizing technique, in a sulfuric acid solution. Afterwards the, Electrochemical Impedance Spectroscopy (EIS) is employed to ap
kinetic model of the passivation of metals via formation of a dual layer comprising a barrier film and a salt overlayer is proposed. It is assumed that the barrier film grows through high field-assisted migration of defects. Ionic surface charges are formed both at the metal/barrier film and barrier