Effect of Anodizing Voltage on the Growth Kinetics of Porous Anodic Alumina on Al-0.5 wt% Mn Alloys

Abstract:

In this study, the effect of anodizing voltage on the current density versus time transient, oxide mass and the current efficiency of anodizing of aluminium manganese alloy was reported. It was found that the anodizing voltage facilitated the pore nucleation process and increased the steady state current density. However, when the anodizing voltage is 70V, dielectric breakdown occurred. The current density versus time transient for anodizing conducted at 30 to 60 V were typical while the shape was unusual for anodizing conducted at 70 V. The rate of oxide growth increased as a function of anodizing voltage. The current efficiency of anodizing increased as the anodizing increased from 30V to 70V.

• Periodical: Advanced Materials Research (Volume 795)
• Pages: 56-59
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.795.56
• Online since: September 2013
• Authors: C.H. Voon, Mohd Nazree B. Derman, U. Hashim, K.R. Ahmad
• Keywords: Anodizing, Concentration, Manganese, Oxalic Acid, Porous Anodic Aluminium Oxide, Voltage

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