During crevice corrosion of steel 12Kh18N10T, local activation may arise as a result of pitting formation close to the mouth of a crevice by the action of ion-activators or as a result of depassivation of individual areas (spotting) within the depth of a crevice due to acidification of crevice solution by hydrolysis products. Activation of steel within a crevice by a chloride pitting mechanisms is most probable at normal temperature in aerated solutions, and by a spotting depassivation mechanism at elevated temperature in deaerated solutions.
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Translated from Khimicheskoe i Neftegazovoe Mashinostroenie, No. 6, pp. 30–35, June, 2012.
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Pakhomov, V.S., Videnbek, R. Effect of temperature and movement on local anodic activation of steel 12Kh18N10T in crevices. Chem Petrol Eng 48, 372–379 (2012). https://doi.org/10.1007/s10556-012-9626-z
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DOI: https://doi.org/10.1007/s10556-012-9626-z