Noise Analysis of Corrosion Potential of Type 304 Stainless Steel in MgCl<sub>2</sub> Solution

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  • Shibata Toshio
    Department of Materials Science and Processing, Faculty of Engineering Osaka University
  • Horikawa Jun
    Shimadzu Corporation, Murasakino Factory
  • Fujimoto Shinji
    Department of Materials Science and Processing, Faculty of Engineering Osaka University

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Other Title
  • MgCl<sub>2</sub>溶液中における304ステンレス鋼の腐食電位のノイズ解析
  • MgCl2溶液中における304ステンレス鋼の腐食電位のノイズ解析
  • MgCl2 ヨウエキチュウ ニ オケル 304 ステンレス コウ ノ フショク

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Description

Electrochemical noise generated from corrosion potential of Type 304 stainless steel in MgCl2 solution has been studied by using a FFT analysis. White noise was observed in a frequency range below 0.1Hz and hence PSD at 0.05Hz was used as a measure for a noise power of the system. PSD at 0.05Hz was found to change as a function of the concentration of MgCl2, temperature and immersion time. The slope of the log(PSD) vs. log(t) line was correlated with the kinetics of the film formation, by assuming that corrosion velocity is proportional to PSD.

Journal

  • CORROSION ENGINEERING

    CORROSION ENGINEERING 38 (3), 155-160, 1989

    Japan Society of Corrosion Engineering

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