Influence of Zinc Ions on Initial Stage of Localized Corrosion of Zn and Zn-Al Alloy Coated Steels with Photon Rupture Method
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概要
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The effect of pre-dissolved Zn ions in the solutions on the initial stage of localized corrosion after oxide films of Zn and Zn–Al alloy coated steels were removed by a photon rupture method, focused pulsed Nd-YAG laser beam irradiation, was investigated electrochemically. Zn ions can be inhibited dissolution of the Zn coated layer by precipitation of zinc hydroxide, which is formed by hydrolysis reaction of dissolved Zn ions in neutral buffer solutions. However, Zn ions do not affect the dissolution of a Zn–Al alloy coated layer. The absence of inhibition of the Zn–Al layer dissolution can be explained by pH change to lower values at the irradiated area by the hydrolysis reaction of the dissolved Al ions. The effect of Zn ions on corrosion inhibition of the coated layer by the photon rupture method established here was in good agreement with polarization experiments.
- 社団法人 日本鉄鋼協会の論文
- 2008-07-15
著者
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TAKAHASHI Hideaki
Asahikawa National College of Technology
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KIKUCHI Tatsuya
Faculty of Engineering, Hokkaido University
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Kikuchi Tatsuya
Faculty Of Engineering Hokkaido University
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Sakairi Masatoshi
Graduate School Of Engineering Hokkaido University
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TAKAHASHI HIDEAKI
Graduate School of Health and Welfare, Niigata University of Health and Welfare
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UCHIDA Yoshiyuki
Graduate School of Engineering, Hokkaido University
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KIKUCHI Tatsuya
Graduate School of Engineering, Hokkaido University
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Uchida Yoshiyuki
Graduate School Of Engineering Hokkaido University
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Takahashi Hideaki
Graduate School Of Engineering Hokkaido University
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