In situ investigation of crevice corrosion on UNS S32101 duplex stainless steel in sodium chloride solution

•Delayed and immediate crevice corrosions are investigated.•The crevice corrosion morphologies are studied by SEM.•The relocation of active dissolution region is observed.•The mechanisms of crevice corrosion are discussed in detail. The crevice corrosion of UNS S32101 in neutral 0.1M NaCl solutions...

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Published in:Corrosion science 2013-11, Vol.76, p.163-169
Main Authors: Yang, Y.Z., Jiang, Y.M., Li, J.
Format: Article
Language:English
Subjects:
A. Stainless steel
Applied sciences
B. Polarization
B. SEM
Boundaries
C. Crevice corrosion
Corrosion
Corrosion environments
Corrosion tests
Crevice corrosion
Dissolution
Duplex stainless steels
Exact sciences and technology
Metals. Metallurgy
Relocation
Walls
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container_title Corrosion science
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creator Yang, Y.Z.
Jiang, Y.M.
Li, J.
description •Delayed and immediate crevice corrosions are investigated.•The crevice corrosion morphologies are studied by SEM.•The relocation of active dissolution region is observed.•The mechanisms of crevice corrosion are discussed in detail. The crevice corrosion of UNS S32101 in neutral 0.1M NaCl solutions at room temperature was investigated directly by a facile method. Experimental results showed that both delayed and immediate crevice corrosion can be initiated. Morphology study indicated that the heaviest corrosion attack happened just below the passive/active boundary on the crevice wall. The relocation of the active dissolution regions during crevice corrosion was observed and explained by established theory. The mechanisms of the delayed and immediate types of crevice corrosion on UNS S32101 duplex stainless steel were discussed.
doi_str_mv 10.1016/j.corsci.2013.06.039
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Crevice corrosion</subject><subject>Corrosion</subject><subject>Corrosion environments</subject><subject>Corrosion tests</subject><subject>Crevice corrosion</subject><subject>Dissolution</subject><subject>Duplex stainless steels</subject><subject>Exact sciences and technology</subject><subject>Metals. 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subjects A. Stainless steel
Applied sciences
B. Polarization
B. SEM
Boundaries
C. Crevice corrosion
Corrosion
Corrosion environments
Corrosion tests
Crevice corrosion
Dissolution
Duplex stainless steels
Exact sciences and technology
Metals. Metallurgy
Relocation
Walls
title In situ investigation of crevice corrosion on UNS S32101 duplex stainless steel in sodium chloride solution
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