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Growth of porous anodic alumina films in hot phosphate–glycerol electrolyte

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Title: Growth of porous anodic alumina films in hot phosphate–glycerol electrolyte
Authors: Yang, S. Browse this author
Aoki, Y. Browse this author
Skeldon, P. Browse this author
Thompson, G. E. Browse this author
Habazaki, H. Browse this author
Keywords: Porous anodic alumina
Organic electrolyte
Growth mechanism
Issue Date: Apr-2011
Publisher: Springer
Journal Title: Journal of Solid State Electrochemistry
Volume: 15
Issue: 4
Start Page: 689
End Page: 696
Publisher DOI: 10.1007/s10008-010-1141-6
Abstract: Growth of porous anodic alumina films has been examined at 10 V in hot phosphatecontaining glycerol electrolyte containing from 0.1 to 0.57 mass% water. The growth rate of the films is highly dependent upon the water content of the electrolyte, reducing markedly at a water content of 0.1 mass%, an opposite trend to that found previously for formation of porous films on titanium and niobium. Chemical dissolution of the anodic alumina is also suppressed in electrolyte of low water content. GDOES depth profiles revealed that an increased water content of the electrolyte promoted incorporation of phosphorus species into the films, although chemical dissolution reduced the amounts of phosphorus in the outer regions. Carbon species also appeared to be present in films, particularly at lower water content. Using a niobium oxide outer layer to suppress chemical dissolution resulted in films that were about 1.2 times the thickness of the consumed aluminium for an electrolyte containing 0.25 mass% water. The expansion suggests possible contribution of field-assisted flow of film material in growth of the porous anodic film.
Rights: The original publication is available at
Type: article (author version)
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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