Flow-Assisted Corrosion of Carbon Steel in Simulated Nuclear Plant Steam Generator Conditions

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creativework.keywordscarbon steel, flow-assisted corrosion, impedance spectroscopy, kinetic model, steam generator
creativework.publisherMultidisciplinary Digital Publishing Institute (MDPI)en
dc.contributor.authorBetova I.
dc.contributor.authorBojinov M.
dc.contributor.authorKarastoyanov V.
dc.date.accessioned2024-07-10T14:27:06Z
dc.date.accessioned2024-07-10T14:51:02Z
dc.date.available2024-07-10T14:27:06Z
dc.date.available2024-07-10T14:51:02Z
dc.date.issued2023-07-01
dc.description.abstractFlow-assisted corrosion occurs via increased dissolution and/or mechanical degradation of protective oxide formed on the surface of construction materials in direct contact with coolant liquids. In the present paper, this phenomenon is studied on carbon steel in an ammonia-ethanolamine-hydrazine electrolyte by in situ electrochemical impedance spectroscopy in conditions that closely simulate those that prevail in nuclear plant steam generators. Based on the obtained results, a quantitative kinetic model of the process is proposed and parameterized by nonlinear regression of experimental data to the respective transfer function. On the basis of the experimental and calculational results, it is concluded that flow-assisted corrosion of carbon steel is limited by oxide dissolution and cation ejection processes and the protective layer–coolant interface. Expressions for the film growth and corrosion release processes are proposed and successfully compared to operational data.
dc.identifier.doi10.3390/cryst13071115
dc.identifier.issn2073-4352
dc.identifier.scopusSCOPUS_ID:85166238891en
dc.identifier.urihttps://rlib.uctm.edu/handle/123456789/851
dc.language.isoen
dc.source.urihttps://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=85166238891&origin=inward
dc.titleFlow-Assisted Corrosion of Carbon Steel in Simulated Nuclear Plant Steam Generator Conditions
dc.typeArticle
oaire.citation.issue7
oaire.citation.volume13
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