Codeposition Behavior of Impurities during Electrogalvanization in Sulfate Baths in the Presence of Fe Ions

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概要

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• The codeposition behavior of impurity Fe with Zn was investigated galvanostatically over the current density range 1–1000 A/m2 at 40°C in zinc sulfate solutions of pH 3 containing 5000 ppm of Fe2+ and other organic or inorganic impurities. Fe showed hardly any codeposition with Zn in solutions containing Fe and either Mo or Ni as impurities. The codeposition of Fe is strongly suppressed in the presence of Zn2+ ions through preferential adsorption of Zn hydroxide on the cathode. In solutions containing Fe and Cu, Fe codeposited with Zn and the Fe content in the deposit decreased with increasing current density. Codeposited Cu promotes Fe deposition by providing active sites that are free of adsorbed Zn hydroxide. In solutions containing Fe and benzyl(dimethyl)(stearyl)ammonium chloride (C18-Benzyl) as an impurity, significant amounts of Fe were codeposited. The cathode potential for Zn deposition was greatly polarized by addition of C18-Benzyl, and the Fe content in deposits increased with increasing current density.

• 社団法人 日本鉄鋼協会の論文
• 2007-07-15

著者

• Nakano Hiroaki

  Department Of Materials Science & Engineering Kyushu University

• Nakano H

  Department Of Physics Niigata University

• Nakano Hiroaki

  Faculty of Engineering, Kyushu University

• Oue Satoshi

  Faculty of Engineering, Kyushu University

• Kobayashi Shigeo

  Faculty of Engineering, Kyushu Sangyo University

• Fukushima Hisaaki

  Faculty of Engineering, Kyushu University

• Hisano Shoji

  Graduate School of Engineering, Kyushu University

• Oue Satoshi

  Department Of Materials Science & Engineering Kyushu University

• Fukushima Hisaaki

  Department Of Materials Science & Engineering Kyushu University

• Fukushima Hisaaki

  Faculty Of Engineering Kyushu University

• Nakano H

  Microelectronics Engineering Laboratory Toshiba Corporation

• Nakano Hiroaki

  Laboratory Of Innovational Biology Department Of Integrated Biosciences Graduate School Of Frontier

• Kobayashi Shigeo

  Department Of Applied Chemistry And Biochemistry Kyushu Sangyo University

• Hisano Shoji

  Graduate School Of Engineering Kyushu University

• Kobayashi Shigeo

  Faculty Of Engineering Kyushu Sangyo University

• NAKANO Hiroaki

  Department of Physics, Niigata University

• NAKANO Hiroaki

  Department of Physics, Kyoto University

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