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フォトンラプチヤー法による中性塩化物溶液中におけるZn系めっき鋼板の局部溶解挙動

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Title: フォトンラプチヤー法による中性塩化物溶液中におけるZn系めっき鋼板の局部溶解挙動
Other Titles: Localized Dissolution of Zn-Al Alloy Coated Steel in Neutral Solution with Cl- by Photon Rupture Method
Authors: 坂入, 正敏1 Browse this author →KAKEN DB
板橋, 一馬2 Browse this author
内田, 義孝3 Browse this author
高橋, 英明4 Browse this author
Authors(alt): Sakairi, Masatoshi1
Itabashi, Kazuma2
Utida, Yoshiuki3
Takahashi, Hideaki4
Keywords: localized dissolution
Zn-Al alloy coated steels
chloride ions
photon rupture method
Issue Date: 1-Feb-2006
Publisher: 日本鉄鋼協会
Journal Title: 鉄と鋼
Volume: 92
Issue: 2
Start Page: 68
End Page: 74
Publisher DOI: 10.2355/tetsutohagane1955.92.2_68
Abstract: A photon rupture method, film removal by a focused one pulse of pulsed Nd-YAG laser beam irradiation, has been applied to investigate initial stage of localized dissolution of Zn and Zn-Al alloy coated steels, which were formed nitrocellulose films as a protective film, in 0. 5kmol m-3 H3BO3-0. 05kmol m-3 Na2B4O7 (pH=7. 4) with 0. 01kmol m-3 chloride ions. This method can remove oxide films and nitrocellulose films on coated layer by laser ablation without any contamination from film removing tools, and the removing speed is extremely high. At low applied potentials, all samples reformed oxide film after films were removed by this method. The oxide film formation kinetics follows on inverse logarithmic law in agreement with Cabrera-Mott theory. However, as increasing applied potential, after some period, localized dissolution occur at nitrocellulose films were removed area. The peak currents of Zn-5mass%Al coated steel specimens were larger than those of Zn and Zn-5mass%Al coated specimens. This result suggest that high aluminum containing coated layer does not show good corro-sion resistance in frequently oxide film removal environments.
Rights: 著作権は日本鉄鋼協会にある
Type: article
URI: http://hdl.handle.net/2115/76147
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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