In-situ electrochemical corrosion testing of 310s steel in supercritical water
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F26722445%3A_____%2F25%3AN0000062" target="_blank" >RIV/26722445:_____/25:N0000062 - isvavai.cz</a>
Result on the web
<a href="https://www.torrossa.com/en/resources/an/5913204#" target="_blank" >https://www.torrossa.com/en/resources/an/5913204#</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.12871/9791256081332" target="_blank" >10.12871/9791256081332</a>
Alternative languages
Result language
angličtina
Original language name
In-situ electrochemical corrosion testing of 310s steel in supercritical water
Original language description
To enhance heat-to-work conversion efficiency in power cycles, new concepts operating at higher parameters of working fluid are suggested. The concept of supercritical-water-cooled reactor (SCWR), a Generation IV design, operates within a challenging temperature range (280 °C to 625 °C). Consequently, the SCWR concept will contend with enormous changes in physical and chemical properties of the cooling water around the critical point (374°C), presenting significant material corrosion challenges. In this study, in-situ electrochemical impedance spectroscopy (EIS) was employed to assess charge transfer and corrosion properties of candidate materials for fuel cladding in supercritical water (SCW). Experiments utilized 310S steel samples in a supercritical autoclave setup with a recirculation water loop. Exposures for 1000h at 380 °C or 500 °C (25 MPa) allowed for real-time corrosion rate monitoring. From the impedance spectra, the faradaic and diffusion resistances were evaluated and used to calculate polarization resistance, which is a fundamental parameter determining the instantaneous corrosion rate. By converting to corrosion current and integrating the time dependence, integral corrosion data can be obtained which are directly comparable to the results of weight gain / loss measurements. Our findings demonstrate the feasibility of EIS measurements in SCW in a broad temperature range and highlight its utility for understanding corrosion process in SCW environments.
Czech name
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Czech description
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Classification
Type
D - Article in proceedings
CEP classification
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OECD FORD branch
20501 - Materials engineering
Result continuities
Project
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Continuities
R - Projekt Ramcoveho programu EK
Others
Publication year
2025
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Article name in the collection
11th International symposium on supercritical water-cooled reactors : Pisa, Italy, February 3-5, 2025
ISBN
979-12-5608-133-2
ISSN
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e-ISSN
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Number of pages
12
Pages from-to
416-427
Publisher name
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Place of publication
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Event location
Pisa, Italy
Event date
Feb 3, 2025
Type of event by nationality
WRD - Celosvětová akce
UT code for WoS article
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