Volume expansion factor and growth efficiency of anodic alumina formed in sulphuric acid

Fan Zhou; A. K. Mohamed Al-Zenati; A. Baron-Wiecheć; M. Curioni; S. J. Garcia-Vergara; H. Habazaki; P. Skeldon; G. E. Thompson

doi:10.1149/1.3578028

Volume expansion factor and growth efficiency of anodic alumina formed in sulphuric acid

Fan Zhou, A. K. Mohamed Al-Zenati, A. Baron-Wiecheć, M. Curioni, S. J. Garcia-Vergara, H. Habazaki, P. Skeldon, G. E. Thompson

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Abstract

The growth of anodic alumina in sulphuric acid is investigated at constant current on bulk and sputtering-deposited aluminium. The ratio of the thickness of the film to the thickness of oxidized aluminium is shown to increase with increase of the current density (from 0.5 to 50 mA cm-2) and with decrease of the electrolyte temperature (from 20 to 0°C). In addition, the sulphur content of the films and the efficiency of film formation increase. It is suggested that pores are generated primarily by dissolution at current densities below ∼2 mA cm-2, with flow of film material dominating at higher current densities. © 2011 The Electrochemical Society.

Original language	English
Pages (from-to)	C202-C214
Journal	Journal of the Electrochemical Society
Volume	158
Issue number	6
DOIs	https://doi.org/10.1149/1.3578028
Publication status	Published - 2011

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title = "Volume expansion factor and growth efficiency of anodic alumina formed in sulphuric acid",

abstract = "The growth of anodic alumina in sulphuric acid is investigated at constant current on bulk and sputtering-deposited aluminium. The ratio of the thickness of the film to the thickness of oxidized aluminium is shown to increase with increase of the current density (from 0.5 to 50 mA cm-2) and with decrease of the electrolyte temperature (from 20 to 0°C). In addition, the sulphur content of the films and the efficiency of film formation increase. It is suggested that pores are generated primarily by dissolution at current densities below ∼2 mA cm-2, with flow of film material dominating at higher current densities. {\textcopyright} 2011 The Electrochemical Society.",

author = "Fan Zhou and {Mohamed Al-Zenati}, {A. K.} and A. Baron-Wieche{\'c} and M. Curioni and Garcia-Vergara, {S. J.} and H. Habazaki and P. Skeldon and Thompson, {G. E.}",

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doi = "10.1149/1.3578028",

language = "English",

volume = "158",

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TY - JOUR

T1 - Volume expansion factor and growth efficiency of anodic alumina formed in sulphuric acid

AU - Zhou, Fan

AU - Mohamed Al-Zenati, A. K.

AU - Baron-Wiecheć, A.

AU - Curioni, M.

AU - Garcia-Vergara, S. J.

AU - Habazaki, H.

AU - Skeldon, P.

AU - Thompson, G. E.

N1 - Cited By (since 1996): 2 Export Date: 25 January 2012 Source: Scopus

PY - 2011

Y1 - 2011

N2 - The growth of anodic alumina in sulphuric acid is investigated at constant current on bulk and sputtering-deposited aluminium. The ratio of the thickness of the film to the thickness of oxidized aluminium is shown to increase with increase of the current density (from 0.5 to 50 mA cm-2) and with decrease of the electrolyte temperature (from 20 to 0°C). In addition, the sulphur content of the films and the efficiency of film formation increase. It is suggested that pores are generated primarily by dissolution at current densities below ∼2 mA cm-2, with flow of film material dominating at higher current densities. © 2011 The Electrochemical Society.

AB - The growth of anodic alumina in sulphuric acid is investigated at constant current on bulk and sputtering-deposited aluminium. The ratio of the thickness of the film to the thickness of oxidized aluminium is shown to increase with increase of the current density (from 0.5 to 50 mA cm-2) and with decrease of the electrolyte temperature (from 20 to 0°C). In addition, the sulphur content of the films and the efficiency of film formation increase. It is suggested that pores are generated primarily by dissolution at current densities below ∼2 mA cm-2, with flow of film material dominating at higher current densities. © 2011 The Electrochemical Society.

U2 - 10.1149/1.3578028

DO - 10.1149/1.3578028

M3 - Article

SN - 0013-4651

VL - 158

SP - C202-C214

JO - Journal of the Electrochemical Society

JF - Journal of the Electrochemical Society

IS - 6

ER -

Volume expansion factor and growth efficiency of anodic alumina formed in sulphuric acid

Abstract

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