Stress-driven transport in ordered porous anodic films

Ionic transport in porous anodic alumina (PAA) films during steady‐state growth was simulated, including effects of ionic migration in the electric potential and stress gradients, as well as material flow. The calculated flow patterns display similar characteristics to those revealed by experimental...

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Veröffentlicht in:	Physica status solidi. A, Applications and materials science Applications and materials science, 2008-10, Vol.205 (10), p.2396-2399
Hauptverfasser:	Houser, Jerrod E., Hebert, Kurt R.
Format:	Artikel
Sprache:	eng
Schlagworte:	66.10.Ed 66.30.−h 68.35.Fx 68.35.Gy 68.55.−a Condensed matter: structure, mechanical and thermal properties Diffusion in solids Exact sciences and technology Physics Self-diffusion and ionic conduction in nonmetals Transport properties of condensed matter (nonelectronic)
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Zusammenfassung:	Ionic transport in porous anodic alumina (PAA) films during steady‐state growth was simulated, including effects of ionic migration in the electric potential and stress gradients, as well as material flow. The calculated flow patterns display similar characteristics to those revealed by experimental studies. The results indicate that the stress field driving the flow originates from three sources: volume change at the metal–film interface during oxidation, the nonlinear current–electric field relationship governing ionic conduction, and insertion of species at the film–solution interface. (© 2008 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim)
ISSN:	1862-6300 0031-8965 1862-6319
DOI:	10.1002/pssa.200779407