In situ gravimetry of nickel thin film during potentiodynamic polarization in acidic and alkaline sulfate solutions

Kikuchi, Naoki; Seo, Masahiro

Corrosion Science, 2006, 48(4), 994-1003

Permalink : https://hdl.handle.net/2115/8554

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アクセス権
open access
URI
https://hdl.handle.net/2115/8554
タイトル
In situ gravimetry of nickel thin film during potentiodynamic polarization in acidic and alkaline sulfate solutions
著者
著者名
Kikuchi, Naoki
著者名
Seo, Masahiro
言語
英語
キーワード
a nickel thin film
sulfate solution
B. EQCM
C. Passivation
partial current
film growth
発行日
2006-04
出版者
PERGAMON-ELSEVIER
収録物名
Corrosion Science
巻(号)
48(4)
ページ
994-1003
抄録
The passivation process of nickel thin films during potentiodynamic polarization in acidic and alkaline sulfate solutions was analyzed by an electrochemical quartz crystal microbalance (EQCM) to separate the partial current density of nickel dissolution through the passive film, iNi2+, and the partial current density of film growth, iO2-. The values of iNi2+ and iO2- during potentiodynamic polarization (20 mV s−1) in the passive potential region could be separated by comparing the mass change rate and net polarization current as a function of electrode potential. It is found that iNi2+ is larger than iO2- in pH 3.0, 0.5 M sulfate solution, while the situation reverses in pH 12, 0.5 M sulfate solution. The sulfate concentration dependences of iNi2+ and iO2- in pH 3.0, sulfate solution were significant as compared to those in pH 12, sulfate solution.
資源タイプ
学術雑誌論文
出版タイプ
Accepted Manuscript
権利情報
c2005 Elsevier
PISSN
0010-938X
関連情報
URI
http://www.sciencedirect.com/science/journal/0010938X
関連情報 (isVersionOf)
出版社版DOI
https://doi.org/10.1016/j.corsci.2005.02.026