Codeposition behavior of impurities during electrogalvanization in sulfate baths in the presence of Fe ions

Hiroaki Nakano, Satoshi Oue, Shoji Hisano, Shigeo Kobayashi, Hisaaki Fukushima

    研究成果: ジャーナルへの寄稿学術誌査読

    8 被引用数 (Scopus)

    抄録

    The codeposition behavior of impurity Fe with Zn was investigated galvanostatically over the current density range 1-1000A/m2 at 40°C In zinc sulfate solutions of pH 3 containing 5 000 ppm of Fe 2+ 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.

    本文言語英語
    ページ(範囲)1029-1033
    ページ数5
    ジャーナルisij international
    47
    7
    DOI
    出版ステータス出版済み - 2007

    !!!All Science Journal Classification (ASJC) codes

    • 材料力学
    • 機械工学
    • 金属および合金
    • 材料化学

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