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General and pitting corrosion of chromium-manganese steels in halogen solutions

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Abstract

We develop methodical foundations for evaluation of the reliability and longevity of 60Kh3G8N8V, 12Kh18AG18Sh, and 05Kh18AG19Sh new chromium-manganese steels, which are used in the power industry, and give recommendations concerning the improvement of their reliability. We study the regularities of the influence of operating fracturing factors on the corrosion-mechanical resistance of these steels. Contact with chloride solutions at elevated temperatures significantly lowers the corrosion resistance of chromium-manganese steels due to worsening of the protective properties of a passive film. In addition, anodic polarization upon contact with copper and the products of its corrosion results in pitting corrosion of steels and their corrosion cracking. We substantiate the necessity and show the prospects of electrochemical protection of steels against corrosion cracking in chloride solutions and in solutions with copper (II) cations.

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Authors and Affiliations

  1. Karpenko Physicomechanical Institute, Ukrainian Academy of Sciences, L’viv

    V. I. Pokhmurs’kyi, O. I. Balyts’kyi & O. O. Krokhmal’nyi

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  1. V. I. Pokhmurs’kyi
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  2. O. I. Balyts’kyi
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  3. O. O. Krokhmal’nyi
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Translated from Fizyko-Khimichna Mekhanika Materialiv. Vol. 36, No. 3, pp. 7–15, May-June, 2000.

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Pokhmurs’kyi, V.I., Balyts’kyi, O.I. & Krokhmal’nyi, O.O. General and pitting corrosion of chromium-manganese steels in halogen solutions. Mater Sci 36, 313–324 (2000). https://doi.org/10.1007/BF02769592

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  • DOI: https://doi.org/10.1007/BF02769592

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