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

被引：36
|
作者：
Xiao, Qian [1 ]
Jang, Changheui [1 ]
Kim, Chaewon [1 ]
Kim, Hyunmyung [2 ]
Chen, Junjie [1 ]
Lee, Hyeon Bae [1 ]
机构：
[1] Korea Adv Inst Sci & Technol, Deajeon 34141, South Korea
[2] Korea Atom Energy Res Inst, Deajeon 34057, South Korea
来源：
CORROSION SCIENCE | 2020年 / 177卷
关键词：
Stainless steels; Oxide film; PWR primary water; Cr content; B2-NiAl; OXIDE-FILMS; OXIDATION RESISTANCE; FECRAL ALLOYS; TEMPERATURE; HYDROGEN; EMBRITTLEMENT; STEAM; PH; NI;
D O I：
10.1016/j.corsci.2020.108991
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
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.
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页数：16
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