期刊
MATERIALS CHEMISTRY AND PHYSICS
卷 130, 期 1-2, 页码 536-547出版社
ELSEVIER SCIENCE SA
DOI: 10.1016/j.matchemphys.2011.07.036
关键词
9Cr-1Mo; Boron; Pitting corrosion; Electrochemical noise; electrochemical techniques electron microscopy; corrosion microstructure
9Cr-1Mo steels indigenously melted with the addition of boron (Alloy B) and without it (Alloy D) along with Alloy C (without boron addition with minor changes in the trace element concentrations) were studied for their pitting corrosion resistance in 0.001 M, 0.01 M, 0.05 M and 0.1 M sodium chloride solutions using electrochemical noise (EN) technique. Weibull probability plots were used to determine the pit embryo generation rates. Gumbel extreme value analysis was conducted to determine the maximum metastable as well as stable pit radii. The analysis of the data showed superior pitting corrosion resistance of the Alloy B compared to Alloy C as well as Alloy D. (C) 2011 Elsevier B.V. All rights reserved.
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