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Název:
EFFECT OF STEEL COMPOSITION ON ITS BEHAVIOUR IN THE LIQUID LEAD ENVIRONMENT
Autoři: Pazderova, M. ; Hojná, A. ; Vít, J. ; Hadraba, Hynek ; Čižek, J.
Typ dokumentu: Příspěvky z konference
Konference/Akce: METAL 2023. International Conference on Metallurgy and Materials /32./, Brno (CZ), 20230517
Rok: 2024
Jazyk: eng
Edice: METAL-Conference Proceedings
Abstrakt: Ferritic-martensitic Eurofer-97 and oxide dispersion strengthened (ODS) Eurofer steels are potential candidates for structural applications in advanced nuclear reactors. Influence of scandium, yttrium, and aluminum addition was studied at 600 degrees C using 10-6 wt.% oxygen concentration. Microstructure and corrosion behaviour was evaluated after 500 h and 1000 h of exposure to liquid lead. Microscopical investigation identified oxidation, solution- based attack, and Pb penetration into the material. Addition of scandium and aluminum changed the mechanism of corrosion attack. Eurofer-97 was partially protected by outer oxide and inner oxidation and Pb penetration was found. In contrast ODS-Eurofer steels after 1000 h of exposure showed mainly inner oxidation and SBA including Pb penetration into the steel. The inner oxidation consisted of Pb+Cr-O and Cr-O+Al-O layers mixture. Degradation of ODS steel was significantly lower than Eurofer-97. It seems that the inner oxidation layer beneath the surface did not prevent the Pb penetration but protected the surface from dissolution.
Klíčová slova: corrosion behavior; Ferritic-martensitic steel; flowing lead; liquid Pb; nuclear application; ods; ods steels; oxidation; pb
Číslo projektu: GA20-20873S (CEP)
Poskytovatel projektu: GA ČR
Zdrojový dokument: METAL 2023. 32nd International Conference on Metallurgy and Materials. Conference Proceedings, ISBN 978-80-88365-12-9, ISSN 2694-9296
Instituce: Ústav fyziky materiálů AV ČR (web)
Informace o dostupnosti dokumentu: Dokument je dostupný v příslušném ústavu Akademie věd ČR.
Původní záznam: https://hdl.handle.net/11104/0354907
Trvalý odkaz NUŠL: http://www.nusl.cz/ntk/nusl-622623
Autoři: Pazderova, M. ; Hojná, A. ; Vít, J. ; Hadraba, Hynek ; Čižek, J.
Typ dokumentu: Příspěvky z konference
Konference/Akce: METAL 2023. International Conference on Metallurgy and Materials /32./, Brno (CZ), 20230517
Rok: 2024
Jazyk: eng
Edice: METAL-Conference Proceedings
Abstrakt: Ferritic-martensitic Eurofer-97 and oxide dispersion strengthened (ODS) Eurofer steels are potential candidates for structural applications in advanced nuclear reactors. Influence of scandium, yttrium, and aluminum addition was studied at 600 degrees C using 10-6 wt.% oxygen concentration. Microstructure and corrosion behaviour was evaluated after 500 h and 1000 h of exposure to liquid lead. Microscopical investigation identified oxidation, solution- based attack, and Pb penetration into the material. Addition of scandium and aluminum changed the mechanism of corrosion attack. Eurofer-97 was partially protected by outer oxide and inner oxidation and Pb penetration was found. In contrast ODS-Eurofer steels after 1000 h of exposure showed mainly inner oxidation and SBA including Pb penetration into the steel. The inner oxidation consisted of Pb+Cr-O and Cr-O+Al-O layers mixture. Degradation of ODS steel was significantly lower than Eurofer-97. It seems that the inner oxidation layer beneath the surface did not prevent the Pb penetration but protected the surface from dissolution.
Klíčová slova: corrosion behavior; Ferritic-martensitic steel; flowing lead; liquid Pb; nuclear application; ods; ods steels; oxidation; pb
Číslo projektu: GA20-20873S (CEP)
Poskytovatel projektu: GA ČR
Zdrojový dokument: METAL 2023. 32nd International Conference on Metallurgy and Materials. Conference Proceedings, ISBN 978-80-88365-12-9, ISSN 2694-9296
Instituce: Ústav fyziky materiálů AV ČR (web)
Informace o dostupnosti dokumentu: Dokument je dostupný v příslušném ústavu Akademie věd ČR.
Původní záznam: https://hdl.handle.net/11104/0354907
Trvalý odkaz NUŠL: http://www.nusl.cz/ntk/nusl-622623
Záznam vytvořen dne 2024-07-27, naposledy upraven 2024-07-27.