Corrosion behavior of stainless steels in simulated PWR primary water: The effect of composition and matrix phases

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Corrosion behavior in simulated pressurized water reactor (PWR) primary water was investigated for stainless steels with 16 and 22 wt% Cr having austenitic, ferritic, and duplex microstructure. For alloys with 22 wt% Cr, the Cr-rich inner oxide layer consisted of Cr2O3 and FeCr2O4 is formed. For alloys with 16 wt% Cr, the Cr-rich spinel inner oxide layer is formed. In-situ and ex-situ electrochemical impedance analyses and Mott-Schottky analysis was used to rank the corrosion resistance of the alloys. In addition to chemical composition, the phases (ferrite, austenite, and B2-NiAl) also affect the corrosion behaviors of the alloys.
Publisher
PERGAMON-ELSEVIER SCIENCE LTD
Issue Date
2020-12
Language
English
Article Type
Article
Citation

CORROSION SCIENCE, v.177, pp.108991

ISSN
0010-938X
DOI
10.1016/j.corsci.2020.108991
URI
http://hdl.handle.net/10203/280034
Appears in Collection
NE-Journal Papers(저널논문)
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