COATED CLADDING BEHAVIOR DURING HIGH-TEMPERATURE TRANSIENTS

COATED CLADDING BEHAVIOR DURING HIGH-TEMPERATURE TRANSIENTS

The concept of accident-tolerant fuels has been proposed and widely investigated over the past decade. The contribution is focused on one of the near-term approaches - the modification of the surface of existing Zr-alloy claddings by protective coatings. The studied specimens are based on Zr-1%Nb su...

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Main Authors: Adéla Chalupová, Jakub Krejčí, Ladislav Cvrček, Martin Ševeček, Vojtěch Rozkošný, Antonín Přibyl, Patricie Halodová, Petra Gávelová
Format: Article
Language:English
Published: CTU Central Library 2019-12-01
Series:Acta Polytechnica CTU Proceedings
Subjects:
nuclear fuel, fuel cladding, loca, atf, coating, pvd.
Online Access:https://ojs.cvut.cz/ojs/index.php/APP/article/view/6088
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spelling doaj-f9adefe0994f4c7a9cfa57841abf86562020-11-25T02:21:14ZengCTU Central LibraryActa Polytechnica CTU Proceedings2336-53822019-12-0124010.14311/APP.2019.24.00094800COATED CLADDING BEHAVIOR DURING HIGH-TEMPERATURE TRANSIENTSAdéla Chalupová0Jakub Krejčí1Ladislav Cvrček2Martin Ševeček3Vojtěch Rozkošný4Antonín Přibyl5Patricie Halodová6Petra Gávelová7Czech Technical University in Prague, Faculty of Nuclear Sciences and Physical Engineering, Department of Nuclear Reactors, V Holešovickách 2, 180 00 Prague 8, Czech Republic UJP PRAHA a.s., Nad Kamínkou 1345, 156 10 Prague – Zbraslav, Czech RepublicUJP PRAHA a.s., Nad Kamínkou 1345, 156 10 Prague – Zbraslav, Czech RepublicCzech Technical University in Prague, Faculty of Mechanical Engineering, Department of Materials Engineering, Karlovo námestí 13, 121 35 Prague 2, Czech RepublicCzech Technical University in Prague, Faculty of Nuclear Sciences and Physical Engineering, Department of Nuclear Reactors, V Holešovickách 2, 180 00 Prague 8, Czech RepublicUJP PRAHA a.s., Nad Kamínkou 1345, 156 10 Prague – Zbraslav, Czech RepublicUJP PRAHA a.s., Nad Kamínkou 1345, 156 10 Prague – Zbraslav, Czech RepublicResearch Centre Rež, Hlavní 130, 250 68 Husinec-Rež, Czech RepublicResearch Centre Rež, Hlavní 130, 250 68 Husinec-Rež, Czech RepublicThe concept of accident-tolerant fuels has been proposed and widely investigated over the past decade. The contribution is focused on one of the near-term approaches - the modification of the surface of existing Zr-alloy claddings by protective coatings. The studied specimens are based on Zr-1%Nb substrate with chromium coating, multicomponent chromium nitride and chromium coating and multi-layer chromium nitride/chromium coating deposited by a physical vapor deposition process. Thermomechanical tests were designed to understand the cladding deformation and the burst conditions during the LOCA phenomena. Presented results show both the positive and the negative effect of coating on cladding behavior. All coatings exhibited a reduction of ballooning size and prolongation of time to burst. On the contrary, coating can be connected with larger opening size after burst, higher hydrogen content and deterioration of the local mechanical properties.https://ojs.cvut.cz/ojs/index.php/APP/article/view/6088nuclear fuel, fuel cladding, loca, atf, coating, pvd.
collection DOAJ
language English
format Article
sources DOAJ
author Adéla Chalupová
Jakub Krejčí
Ladislav Cvrček
Martin Ševeček
Vojtěch Rozkošný
Antonín Přibyl
Patricie Halodová
Petra Gávelová
spellingShingle Adéla Chalupová
Jakub Krejčí
Ladislav Cvrček
Martin Ševeček
Vojtěch Rozkošný
Antonín Přibyl
Patricie Halodová
Petra Gávelová
COATED CLADDING BEHAVIOR DURING HIGH-TEMPERATURE TRANSIENTS
Acta Polytechnica CTU Proceedings
nuclear fuel, fuel cladding, loca, atf, coating, pvd.
author_facet Adéla Chalupová
Jakub Krejčí
Ladislav Cvrček
Martin Ševeček
Vojtěch Rozkošný
Antonín Přibyl
Patricie Halodová
Petra Gávelová
author_sort Adéla Chalupová
title COATED CLADDING BEHAVIOR DURING HIGH-TEMPERATURE TRANSIENTS
title_short COATED CLADDING BEHAVIOR DURING HIGH-TEMPERATURE TRANSIENTS
title_full COATED CLADDING BEHAVIOR DURING HIGH-TEMPERATURE TRANSIENTS
title_fullStr COATED CLADDING BEHAVIOR DURING HIGH-TEMPERATURE TRANSIENTS
title_full_unstemmed COATED CLADDING BEHAVIOR DURING HIGH-TEMPERATURE TRANSIENTS
title_sort coated cladding behavior during high-temperature transients
publisher CTU Central Library
series Acta Polytechnica CTU Proceedings
issn 2336-5382
publishDate 2019-12-01
description The concept of accident-tolerant fuels has been proposed and widely investigated over the past decade. The contribution is focused on one of the near-term approaches - the modification of the surface of existing Zr-alloy claddings by protective coatings. The studied specimens are based on Zr-1%Nb substrate with chromium coating, multicomponent chromium nitride and chromium coating and multi-layer chromium nitride/chromium coating deposited by a physical vapor deposition process. Thermomechanical tests were designed to understand the cladding deformation and the burst conditions during the LOCA phenomena. Presented results show both the positive and the negative effect of coating on cladding behavior. All coatings exhibited a reduction of ballooning size and prolongation of time to burst. On the contrary, coating can be connected with larger opening size after burst, higher hydrogen content and deterioration of the local mechanical properties.
topic nuclear fuel, fuel cladding, loca, atf, coating, pvd.
url https://ojs.cvut.cz/ojs/index.php/APP/article/view/6088
work_keys_str_mv AT adelachalupova coatedcladdingbehaviorduringhightemperaturetransients
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