カソード分極曲線による塗膜欠陥部の腐食形態の判定

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  • 山本 隆
    日本ペイント株式会社技術センター
  • 尼子 宏
    日本ペイント株式会社技術センター

書誌事項

タイトル別名
  • The Classification of Types of Corrosion at Defective Parts of Coated Steel from Cathodic Polarization Curve
  • カソード ブンキョク キョクセン ニヨル トマク ケッカンブ ノ フショク ケ

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抄録

The measurements of the cathodic polarization curve by the potentiodynamic method were made with the observation of the rust width by the naked-eyes in order to classify types of corrosion at the deffective parts of coated steel plate. It was found from the measurements for a variety of coated steels that the cathodic curve for the defective parts showing non-pitting corrosion had a characteristic peak, while one showing pitting corrosion was normal without any peak. Moreover, it was shown that this new estimation method for the judgment of corrosion type could be applied to almost all coated steel panels.

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