Mechanism of anomalous type electrodeposition of Fe-Ni alloys from sulfate solutions

Hiroaki Nakano, Masayuki Matsuno, Satoshi Oue, Masaaki Yano, Shigeo Kobayashi, Hisaaki Fukushima

研究成果: ジャーナルへの寄稿記事

14 引用 (Scopus)

抄録

The electrodeposition of Fe-Ni alloys was performed galvanostatically in the sulfate solutions of pH 1-3 at 40°C and the alloy deposition behavior was compared with that of Zn-iron-group metal alloys to investigate their codeposition mechanism. The deposition behavior of Fe-Ni alloy showed a typical feature of the anomalous codeposition, in which electrochemically less noble Fe deposits preferentially under most plating conditions. The anomalous codeposition behavior in Fe-Ni alloy deposition was evidently dependent on the pH buffer capacity of the solutions. This can be explained in terms of the preferential adsorption of FeOH on the deposition sites of more noble Ni due to the extremely smaller dissociation constant of FeOH + than NiOH + in the multistep reduction process of hydrated iron-group metal ions.

元の言語英語
ページ(範囲)548-554
ページ数7
ジャーナルNippon Kinzoku Gakkaishi/Journal of the Japan Institute of Metals
69
発行部数7
DOI
出版物ステータス出版済み - 7 1 2005

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Electrodeposition
electrodeposition
Sulfates
sulfates
Iron
iron
plating
Plating
Metal ions
metal ions
Buffers
Deposits
buffers
Metals
deposits
dissociation
Adsorption
adsorption
metals

All Science Journal Classification (ASJC) codes

  • Condensed Matter Physics
  • Mechanics of Materials
  • Metals and Alloys
  • Materials Chemistry

これを引用

Mechanism of anomalous type electrodeposition of Fe-Ni alloys from sulfate solutions. / Nakano, Hiroaki; Matsuno, Masayuki; Oue, Satoshi; Yano, Masaaki; Kobayashi, Shigeo; Fukushima, Hisaaki.

:: Nippon Kinzoku Gakkaishi/Journal of the Japan Institute of Metals, 巻 69, 番号 7, 01.07.2005, p. 548-554.

研究成果: ジャーナルへの寄稿記事

Nakano, Hiroaki ; Matsuno, Masayuki ; Oue, Satoshi ; Yano, Masaaki ; Kobayashi, Shigeo ; Fukushima, Hisaaki. / Mechanism of anomalous type electrodeposition of Fe-Ni alloys from sulfate solutions. :: Nippon Kinzoku Gakkaishi/Journal of the Japan Institute of Metals. 2005 ; 巻 69, 番号 7. pp. 548-554.
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abstract = "The electrodeposition of Fe-Ni alloys was performed galvanostatically in the sulfate solutions of pH 1-3 at 40°C and the alloy deposition behavior was compared with that of Zn-iron-group metal alloys to investigate their codeposition mechanism. The deposition behavior of Fe-Ni alloy showed a typical feature of the anomalous codeposition, in which electrochemically less noble Fe deposits preferentially under most plating conditions. The anomalous codeposition behavior in Fe-Ni alloy deposition was evidently dependent on the pH buffer capacity of the solutions. This can be explained in terms of the preferential adsorption of FeOH on the deposition sites of more noble Ni due to the extremely smaller dissociation constant of FeOH + than NiOH + in the multistep reduction process of hydrated iron-group metal ions.",
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