Abstract
General corrosion behavior and stress corrosion cracking (SCC) susceptibility of carbon steel in simulated steam generator crevices are probed by voltammetry and electrochemical impedance spectroscopy, coupled to ex-situ characterization of the formed oxides and slow strain rate tests. Impedance spectra are interpreted using the Mixed-Conduction Model allowing for the extraction of oxidation and corrosion release rates. The results indicate a beneficial effect of lead on both general corrosion and SCC susceptibility of carbon steel near the corrosion potential. At anodic potentials, the negative effect of Pb on localized corrosion susceptibility is secondary to that of the applied potential.
| Original language | English |
|---|---|
| Article number | 108117 |
| Journal | Corrosion Science |
| DOIs | |
| Publication status | Accepted/In press - 24 Jul 2019 |
| MoE publication type | A1 Journal article-refereed |
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Keywords
- Carbon steel
- Electrochemical impedance spectroscopy
- General corrosion
- Steam generator
- Stress-corrosion cracking
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Effect of lead and applied potential on corrosion of carbon steel in steam generator crevice solutions. / Bojinov, Martin (Corresponding Author); Jäppinen, Essi; Saario, Timo; Sipilä, Konsta; Toivonen, Aki.
In: Corrosion Science, 24.07.2019.Research output: Contribution to journal › Article › Scientific › peer-review
TY - JOUR
T1 - Effect of lead and applied potential on corrosion of carbon steel in steam generator crevice solutions
AU - Bojinov, Martin
AU - Jäppinen, Essi
AU - Saario, Timo
AU - Sipilä, Konsta
AU - Toivonen, Aki
PY - 2019/7/24
Y1 - 2019/7/24
N2 - General corrosion behavior and stress corrosion cracking (SCC) susceptibility of carbon steel in simulated steam generator crevices are probed by voltammetry and electrochemical impedance spectroscopy, coupled to ex-situ characterization of the formed oxides and slow strain rate tests. Impedance spectra are interpreted using the Mixed-Conduction Model allowing for the extraction of oxidation and corrosion release rates. The results indicate a beneficial effect of lead on both general corrosion and SCC susceptibility of carbon steel near the corrosion potential. At anodic potentials, the negative effect of Pb on localized corrosion susceptibility is secondary to that of the applied potential.
AB - General corrosion behavior and stress corrosion cracking (SCC) susceptibility of carbon steel in simulated steam generator crevices are probed by voltammetry and electrochemical impedance spectroscopy, coupled to ex-situ characterization of the formed oxides and slow strain rate tests. Impedance spectra are interpreted using the Mixed-Conduction Model allowing for the extraction of oxidation and corrosion release rates. The results indicate a beneficial effect of lead on both general corrosion and SCC susceptibility of carbon steel near the corrosion potential. At anodic potentials, the negative effect of Pb on localized corrosion susceptibility is secondary to that of the applied potential.
KW - Carbon steel
KW - Electrochemical impedance spectroscopy
KW - General corrosion
KW - Steam generator
KW - Stress-corrosion cracking
UR - http://www.scopus.com/inward/record.url?scp=85069722044&partnerID=8YFLogxK
U2 - 10.1016/j.corsci.2019.108117
DO - 10.1016/j.corsci.2019.108117
M3 - Article
JO - Corrosion Science
JF - Corrosion Science
SN - 0010-938X
M1 - 108117
ER -