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Model for the steady-state growth of porous anodic alumina films
Chemical and Biological Engineering Conference Presentations and Proceedings
  • Jerrod E. Houser, Iowa State University
  • Kurt R. Hebert, Iowa State University
Document Type
Conference Proceeding
210th ECS Meeting
Publication Date
(21.161908, -86.85152790000001)
Simulations were developed for the distributions of electrical potential and incorporated anions in porous anodic alumina (PAA) films during steady-state growth. Predictions of a model for the potential distribution based on Laplace's equation were compared to those of the current continuity equation in conjunction with high-field conduction. It was found that Laplace's equation, which has been used previously in PAA models, resulted in strong violations of charge conservation, when the current density was evaluated using the high field conduction equation. Interface motion predicted by the current continuity equation was nearly uniform except near convex ridges on the metal-film interface. This model was extended to predict the distribution of anions in the film, since incorporated anions may provide suppression of conduction near the ridge. The spatial distribution of acid anions predicted by the model agreed with experimental observations.

The archival version of this work was published in J. E. Houser and K. R. Hebert, "Model for the Steady-State Growth of Porous Anodic Alumina Films", ECS Trans., 3, (31) 375-385 (2007). doi: 10.1149/1.2789243

© The Electrochemical Society, Inc. 2007. All rights reserved. Except as provided under U.S. copyright law, this work may not be reproduced, resold, distributed, or modified without the express permission of The Electrochemical Society (ECS).
Copyright Owner
The Electrochemical Society
Citation Information
Jerrod E. Houser and Kurt R. Hebert. "Model for the steady-state growth of porous anodic alumina films" Cancun, Mexico(2006)
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