Effects of small amounts of molybdenum, tungsten, or tin additives on the morphology and orientation of electrodeposited zinc

Hiroaki Nakano, Satoshi Oue, Shoichi Taniguchi, Shigeo Kobayashi, Hisaaki Fukushima

    研究成果: Contribution to journalArticle査読

    14 被引用数 (Scopus)

    抄録

    Zn was electrodeposited galvanostatically on a steel sheet at 1 500 A/m2 in an agitated sulfate solution of pH 2 at 40°C to investigate the effects of small amounts of Mo, W, or Sn additives on the morphology, crystal orientation and lightness of the deposited Zn. Neither Mo nor W codeposited with Zn, and both showed hardly any effect on the morphology of the deposited Zn. Mo and W increased the orientation of the (0001) plane of Zn, but did not change the overpotential for Zn deposition. Sn codeposited with Zn and, as a result, platelet crystals of Zn did not form. Sn increased the crystal orientation of the (0001) and (101̄3) planes of Zn as a result of a decrease in the overpotential for Zn deposition. The lightness of the deposited Zn depended on its crystal orientation and surface roughness. At a coating mass of 20g/m2, Sn, Mo and W enhanced the lightness of Zn by increasing the orientation of its (0001) and (101̄3) planes. At higher coating masses, however, this enhancement in lightness disappeared as a result of the increase in surface roughness induced by the presence of the inorganic additives.

    本文言語英語
    ページ(範囲)634-639
    ページ数6
    ジャーナルisij international
    48
    5
    DOI
    出版ステータス出版済み - 2008

    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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