大気腐食マルチモニタリングシステムによる液薄膜下での炭素鋼の初期腐食挙動

書誌事項

タイトル別名
  • Initial Corrosion Behavior of Carbon Steel under a Thin Electrolyte Layer Using a Multi-Monitoring System
  • タイキ フショク マルチ モニタリング システム ニ ヨル エキ ハクマク カ デ ノ タンソ コウ ノ ショキ フショク キョドウ

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抄録

A multi-monitoring system has been constructed to research atmospheric corrosion behavior of metal continuously and multifariously. The system consists of a microscope, a surface potential apparatus, a corrosion monitor and a chamber which can control both temperature and relative humidity. Initial corrosion behavior of carbon steel under a thin electrolyte layer has been studied using this system. As the result of monitoring of impedance and surface potential for relative humidity, the surface potential shifted to less noble and the corrosion rate increased with an increase of relative humidity. Furthermore, the change in the surface potential and corrosion rate for the average thickness of a thin electrolyte layer calculated thermodynamically has been researched. The surface potential shifted to noble with a decrease of electrolyte layer thickness, and the corrosion rate showed a maximum at a thickness of about 80 μm. Based on the results of surface potential and corrosion rate, the initial corrosion behavior of carbon steel under a thin electrolyte layer has been discussed.

収録刊行物

  • 表面技術

    表面技術 54 (12), 1022-1027, 2003

    一般社団法人 表面技術協会

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