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ElectroComponent Science and Technology
Volume 6, Issue 2, Pages 63-66

On the Inhibition of the Reaction Between Anodic Aluminum Oxide and Water

Departmento de Fisica Aplicada & Instituto de Fisica del Estado Sólido (C.S.I.C.), Universidad Autonóma de Madrid, Cantoblanco, Madrid, Spain

Received 1 November 1978; Accepted 11 April 1979

Copyright © 1980 Hindawi Publishing Corporation. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.


The reaction between anodic aluminum oxide and several passivating solutions of citric acid and ammonium dihydrogen phosphate (ADP) is studied by capacitance measurements. In addition, the passivating effect of the above solutions has been evaluated by the reaction of the oxide with pure boiling water and subsequent anodization. The results show a strong passivating effect of the ADP solution which is partially diminished by the addition of citrate ions.