Statistical Analysis on the Current Fluctuations during Pit Embryos Formation on Stainless Steel

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  • ステンレス鋼の孔食萌芽発生に伴う電流振動とその統計的性質
  • ステンレス コウ ノ コウショク ホウガ ハッセイ ニ トモナウ デンリュウ

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Abstract

Current fluctuations of a stainless steel under anodic polarization in sodium chloride solutions were measured and analyzed statistically. The frequencies of the fluctuations were decreased with time after the polarization and the probability of the fluctuation was predicted by an exponential function which suggested that all the events were independent of each other. The rate of pit embryos formation decreased with increasing polarization potential. The rate of passivation (death probability of embryos), the mean life time and the peak current of the fluctuations did not clearly depend upon the polarization potential and the concentration of chloride.

Journal

  • CORROSION ENGINEERING

    CORROSION ENGINEERING 39 (7), 355-360, 1990

    Japan Society of Corrosion Engineering

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