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Cathodic pulse breakdown of anodic films on aluminium in alkaline silicate electrolyte : Understanding the role of cathodic half-cycle in AC plasma electrolytic oxidation

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Title: Cathodic pulse breakdown of anodic films on aluminium in alkaline silicate electrolyte : Understanding the role of cathodic half-cycle in AC plasma electrolytic oxidation
Authors: Sah, Santosh Prasad Browse this author
Tsuji, Etsushi Browse this author
Aoki, Yoshitaka Browse this author
Habazaki, Hiroki Browse this author →KAKEN DB
Keywords: Aluminium
SEM
Anodic films
Issue Date: Feb-2012
Publisher: Elsevier
Journal Title: Corrosion Science
Volume: 55
Start Page: 90
End Page: 96
Publisher DOI: 10.1016/j.corsci.2011.10.007
Abstract: Sequential anodic and cathodic pulse voltages were applied on anodised Al micro-electrodes in alkaline silicate electrolyte to explore the role of cathodic pulse in AC or bipolar plasma electrolytic oxidation (PEO) process. SEM observation was carried out to observe the sites of anodic and cathodic breakdown and their morphologies. The prior anodic breakdown accelerated the cathodic breakdown at -50 V, and the acceleration was associated with the preferential cathodic breakdown at the anodic breakdown sites. However, the succeeding anodic breakdown during applying anodic pulse of 420 V for 2 ms was highly suppressed at the cathodic breakdown sites.
Type: article (author version)
URI: http://hdl.handle.net/2115/48644
Appears in Collections:工学院・工学研究院 (Graduate School of Engineering / Faculty of Engineering) > 雑誌発表論文等 (Peer-reviewed Journal Articles, etc)

Submitter: 幅崎 浩樹

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