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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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ISIJ Int., Vol. 48 (2008), No. 7, pp. 988-993.pdf1.59 MBPDFView/Open
Please use this identifier to cite or link to this item:http://hdl.handle.net/2115/76149

Title: Influence of Zinc Ions on Initial Stage of Localized Corrosion of Zn and Zn–Al Alloy Coated Steels with Photon Rupture Method
Authors: Sakairi, Masatoshi Browse this author →KAKEN DB
Uchida, Yoshiyuki Browse this author
Kikuchi, Tatsuya Browse this author →KAKEN DB
Takahashi, Hideaki Browse this author
Keywords: coated steel
localized corrosion
Zn ions
laser beam irradiation
corrosion resistance
Issue Date: 15-Jul-2008
Publisher: 日本鉄鋼協会
Journal Title: ISIJ International
Volume: 48
Issue: 7
Start Page: 988
End Page: 993
Publisher DOI: 10.2355/isijinternational.48.988
Abstract: 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.
Rights: 著作権は日本鉄鋼協会にある
Type: article
URI: http://hdl.handle.net/2115/76149
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: 坂入 正敏

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