Controlling Factor of Self-Ordering of Anodic Porous Alumina
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- 1 January 2004
- journal article
- Published by The Electrochemical Society in Journal of the Electrochemical Society
- Vol. 151 (8), B473-B478
- https://doi.org/10.1149/1.1767838
Abstract
The controlling factor of self-ordering of anodic porous alumina was investigated by focusing on the current density during film growth. The homogeneity of cell size was improved with increasing formation voltage accompanied by the exponential increase in current density. The maximum anodizing voltage for proceeding uniform oxide growth while avoiding extremely high current accompanied by gas evolution was identical with the previously established self-ordering voltage. With the increase in formation voltage up to the self-ordering voltage, the ratio of pore diameter to cell diameter dpore/dcelldpore/dcell lowered and converged to ∼0.3 regardless of the electrolyte type. Moreover, domains of highly self-ordered pore arrays were found in the film formed during burning, where extremely high current was locally concentrated. This suggests that the condition inducing film growth under high current density, i.e., high electric field strength is the key controlling factor of self-ordering. Based on the above knowledge, a new self-ordered porous alumina with a 600 nm pore interval was fabricated in citric acid just under the critical voltage of burning. © 2004 The Electrochemical Society. All rights reserved.Keywords
This publication has 21 references indexed in Scilit:
- Self-Ordering of Anodic Porous Alumina Induced by Local Current Concentration: BurningElectrochemical and Solid-State Letters, 2004
- Transfer of nanoporous pattern of anodic porous alumina into Si substrateApplied Physics Letters, 2003
- Growth of anodic porous alumina with square cellsElectrochimica Acta, 2003
- Self-ordering Regimes of Porous Alumina: The 10 Porosity RuleNano Letters, 2002
- Self-Ordering of Cell Configuration of Anodic Porous Alumina with Large-Size Pores in Phosphoric Acid SolutionJapanese Journal of Applied Physics, 1998
- Self‐Ordering of Cell Arrangement of Anodic Porous Alumina Formed in Sulfuric Acid SolutionJournal of the Electrochemical Society, 1997
- Ordered Metal Nanohole Arrays Made by a Two-Step Replication of Honeycomb Structures of Anodic AluminaScience, 1995
- Transport Numbers and the Structure of Porous Anodic Films on AluminumJournal of the Electrochemical Society, 1970
- High Field Ionic Conduction in Tantalum Anodic Oxide Films with Incorporated PhosphateJournal of the Electrochemical Society, 1970
- Theory of the oxidation of metalsReports on Progress in Physics, 1949