Electrochemical Random Signal Analysis during Galvanic Corrosion of Anodized Aluminum Alloy

Sakairi, Masatoshi; Shimoyama, Yukiya

実験力学, 2007, 7(Special Issue), 114-119

Permalink : https://hdl.handle.net/2115/75958

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論文情報

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アクセス権
open access
URI
https://hdl.handle.net/2115/75958
タイトル
Electrochemical Random Signal Analysis during Galvanic Corrosion of Anodized Aluminum Alloy
著者
e-Rad_Researcher
50280847
著者名
Sakairi, Masatoshi
著者名
Shimoyama, Yukiya
言語
英語
キーワード
Electrochemical noise
Electrochemical impedance
Anodizing
Aluminum
Galvanic corrosion
Chloride ion
発行日
2007-06-05
出版者
日本実験力学会
収録物名
実験力学
Journal of JSEM
巻(号)
7(Special Issue)
ページ
114-119
抄録
A new type of electrochemical random signal analysis technique was applied to galvanic corrosion of anodic oxide films formed on 6061-T6 aluminum alloy in NaCl containing 0.5 kmol⁄m3 H3BO4 ⁄ 0.05 kmol⁄m3 Na2B4O7 solutions. The effect of the anodic oxide film structure on the galvanic corrosion resistance was also examined. During incubation (before localized corrosion started), both current and potential change slightly from the initial value. The incubation period of porous type anodic oxide specimens is longer than that of barrier type anodic oxide specimens. During localized corrosion, the current and potential changing with fluctuations, and the potential and the current fluctuations show good correlation. The slope of the PSD of both potential spectra of anodized specimens is about minus one ( -1 ), after the localized corrosion has started. This technique allows observation of electrochemical impedance changes during localized corrosion.
資源タイプ
学術雑誌論文
出版タイプ
Version of Record
PISSN
1346-4930
NCID
AA11822914
関連情報 (isIdenticalTo)
出版社版DOI
https://doi.org/10.11395/jjsem.7.s114