Corrosion Process of Zinc-Nickel Alloy Electroplated Steel.
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- HAGI Hideki
- Fukui Univ. of Technology
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- YOTSUGI Hiroyuki
- Graduate School, Fukui Univ. of Technology Present: Shinko Wire Co., Ltd.
Bibliographic Information
- Other Title
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- 亜鉛‐ニッケル合金めっき鋼板の腐食過程
- アエン ニッケル ゴウキン メッキ コウハン ノ フショク カテイ
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Abstract
In order to examine the corrosion process of Zn-Ni alloy electroplated steel in a solution containing chlorine ions (3%NaCl aqueous solution), the time dependence of the corrosion potential was measured during an immersion test and the corrosion products were analyzed by XPS. The corrosion potential shifted to a noble potential in a complex manner as corrosion proceeded. The shift of the corrosion potential was characterized by the following corrosion process. At the beginning of corrosion, selective dissolution of Zn occured, and Zn oxide or hydroxide formed as a corrosion product on the surface of the Zn-Ni alloy plating. In the early stages of corrosion, the thickness of the corrosion product layer increased. As corrosion progressed, ZnCl2·4Zn(OH)2 formed outside the Zn oxide (hydroxide) layer. Therefore, the surface of the Zn-Ni alloy electroplated steel took on a layered structure of ZnCl2·4Zn(OH)2/Zn oxide or hydroxide/Zn oxide or hydroxide+metallic Ni/steel substrate. Dissolution of iron from the underlying steel occurs by passing through these corrosion products layers.
Journal
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- Journal of The Surface Finishing Society of Japan
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Journal of The Surface Finishing Society of Japan 48 (2), 206-212, 1997
The Surface Finishing Society of Japan
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Details 詳細情報について
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- CRID
- 1390001204115545984
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- NII Article ID
- 10002258398
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- NII Book ID
- AN1005202X
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- ISSN
- 18843409
- 09151869
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- NDL BIB ID
- 4139979
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- Text Lang
- ja
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- Data Source
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- JaLC
- NDL
- Crossref
- CiNii Articles
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- Abstract License Flag
- Disallowed