TY - JOUR
T1 - Corrosion of Alloy 690 in Simulated Steam Generator Crevices
T2 - Effect of Applied Potential, pH and Pb Addition
AU - Betova, Iva
AU - Bojinov, Martin
AU - Ikäläinen, Tiina
AU - Saario, Timo
AU - Sipilä, Konsta
N1 - Funding Information:
The funding of this work by the SAFIR 2022 Finnish Research Program on Nuclear Power Plant Safety (2019–2022) is gratefully acknowledged.
Publisher Copyright:
© 2022 The Electrochemical Society ("ECS"). Published on behalf of ECS by IOP Publishing Limited.
PY - 2022/2/9
Y1 - 2022/2/9
N2 - The mechanism of general corrosion of Alloy 690 in simulated steam generator crevices is investigated by voltammetry, electrochemical impedance spectroscopy and slow strain rate tests, combined with ex-situ characterization of the oxides using Xray photoelectron and Glow-discharge optical emission spectroscopies. Quantitative interpretation of impedance spectra with the Mixed-Conduction Model furnishes estimates of kinetic and transport parameters of the corrosion and anodic oxidation processes. The results indicate a beneficial effect of Pb addition on general corrosion regardless of crevice solution composition.
AB - The mechanism of general corrosion of Alloy 690 in simulated steam generator crevices is investigated by voltammetry, electrochemical impedance spectroscopy and slow strain rate tests, combined with ex-situ characterization of the oxides using Xray photoelectron and Glow-discharge optical emission spectroscopies. Quantitative interpretation of impedance spectra with the Mixed-Conduction Model furnishes estimates of kinetic and transport parameters of the corrosion and anodic oxidation processes. The results indicate a beneficial effect of Pb addition on general corrosion regardless of crevice solution composition.
UR - http://www.scopus.com/inward/record.url?scp=85125479824&partnerID=8YFLogxK
U2 - 10.1149/1945-7111/ac4f26
DO - 10.1149/1945-7111/ac4f26
M3 - Article
AN - SCOPUS:85125479824
SN - 0013-4651
VL - 169
JO - Journal of the Electrochemical Society
JF - Journal of the Electrochemical Society
IS - 2
M1 - 021502
ER -