通電ロールへのめっき付着現象の電気化学的シミュレーション Electrochemical Approach to the Conductor-Roll Dent Problem in a Reel-to-Reel Strip Electroplating Line

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In a continuous reel-to-reel strip electroplating apparatus, electrical current is fed to a moving cathode strip through a conductor-roll in contact with the strip. Dent defects are occasionally induced on the strip surface from a irregular surface texture on the conductor-roll generated by non-uniform metal deposition onto the conductor-roll in the vicinity of the up-stream contact line area. We attempted numerical simulation of metal electrodeposition onto a conductor-roll in a thin drag-out electrolyte close to the contact line. The overall approach of the model was to treat the system as a problem of secondary current distribution, using measured electrochemical kinetics as the boundary conditions in binary alloy electrodeposition, under the assumption that the mass-transport effect is of minor importance. The potential posed on the domain thus obeys Laplace's equation, and the boundary conditions apply as non-linear functions determined by the anodic and/or cathodic polarization curves. An electrogalvanized steel sheet was used as the anode and a hastelloy sheet as the cathode. Using contact resistance between strip and couductor-roll, electrolyte resistance, strip ohmic resistance, difference in equilibrium potential, and activation overpotential, as the process variables pertaining to metal deposition on the conductor-roll, the electrodeposition rate onto a couductor-roll surface was numerically simulated for a zinc-nickel alloy electrodeposition system.

収録刊行物

  • 表面技術 = The Journal of the Surface Finishing Society of Japan

    表面技術 = The Journal of the Surface Finishing Society of Japan 47(5), 443-447, 1996-05

    The Surface Finishing Society of Japan

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各種コード

  • NII論文ID(NAID)
    10002256380
  • NII書誌ID(NCID)
    AN1005202X
  • 本文言語コード
    JPN
  • 資料種別
    ART
  • ISSN
    09151869
  • NDL 記事登録ID
    3960069
  • NDL 雑誌分類
    ZP41(科学技術--金属工学・鉱山工学)
  • NDL 請求記号
    Z17-291
  • データ提供元
    CJP書誌  NDL  J-STAGE 
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