in-situ ラマン分光法を用いた模擬酸性雨水溶液中における溶融Znめっき鋼板の腐食過程の解析 Analysis of Corrosion Process of Hot-Dip Zinc-Coated Steel Sheets in Simulated Acid Rain Solution with in-situ Raman Spectroscopy

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Hot-dip zinc-coated steel sheets are used as an outdoor industrial material, but they corrode because of acid rain.<br>In this study, the corrosion process of hot-dip zinc-coated steel sheets in simulated acid rain solution with <i>in-situ</i> Raman spectroscopy has been studied.<br>The current density of specimen decreased with constant potential holding at −0.6V vs. Ag/AgCl in simulated acid rain solution. And, the main peak, ZnSO<sub>4</sub>·7H<sub>2</sub>O was detected with <i>in-situ</i> Raman spectroscopy at the time of decreasing current density. Therefore, it is considered to be the case that the following equation describes the reactions that occurred.<br>Zn<sup>2+</sup>+SO<sub>4</sub><sup>2−</sup>+7H<sub>2</sub>O→ZnSO<sub>4</sub>·7H<sub>2</sub>O.<br>The current density was decreased by ZnSO<sub>4</sub>·7H<sub>2</sub>O because the growth of ZnSO<sub>4</sub>·7H<sub>2</sub>O covered surface area of the specimen.<br>Hot-dip zinc-coated steel sheets showed an anticorrosive effect as a result of the hot-dip zinc-coating layer being dissolved by a sacrificial anode function, and ZnSO<sub>4</sub>·7H<sub>2</sub>O was formed in the simulated acid rain solution.

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 59(4), 247-250, 2008-04-01 

    The Surface Finishing Society of Japan

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各種コード

  • NII論文ID(NAID)
    10021169745
  • 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
    9455007
  • 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  CJP引用  NDL  J-STAGE 
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