Experimental investigation of cold-spray Cr-coated cladding during normal and accident conditions

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68407700%3A21340%2F20%3A00340303" target="_blank" >RIV/68407700:21340/20:00340303 - isvavai.cz</a>

Výsledek na webu

<a href="http://globaltopfuel.ans.org/" target="_blank" >http://globaltopfuel.ans.org/</a>

DOI - Digital Object Identifier

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Jazyk výsledku

angličtina

Název v původním jazyce

Experimental investigation of cold-spray Cr-coated cladding during normal and accident conditions

Popis výsledku v původním jazyce

This paper investigates the experimental performance of cold-spray chromium (Cr) coating on Zircaloy-4. Previously, preliminary high temperature steam (500 to 1400 oC) and quench, room-temperature burst, autoclave creep, fatigue and corrosion testing along with thermo-mechanical modelling showed Cr-coating via cold spray process is a promising accident tolerant fuel (ATF) concept. Though, some concerns regarding crack propagation and rod bowing of the coated clad were also discussed. In this study, we expand the test matrix by investigating the accelerated creep and CRUD disposition after >800 hours of testing. The results indicate that the cold-spray chromium coating is expected to have similar performance during normal operation in terms of mechanical and thermal creep and CRUD deposition when compared to Zr-4. In addition, the results of ion irradiation of chrome and high temperature ballooning/burst are reported. It was inferred from ion irradiation study that chrome irradiation-induced swelling should be small during normal operating conditions. Noticeably superior performance in terms of burst time and burst size were also observed with the coated cladding samples at high temperature when compared to Zr-4 which was opposite of the previous findings at room temperature. Single-sided steam oxidation at 1200 oC were also performed. While weight gain was found to be considerably smaller, hydrogen concentration was found to be higher in Cr coated samples compared to Zr-4. These data serve as a basis to motivate future testing and development of coated cladding models to predict the performance of this ATF concept for future commercial deployment.

Název v anglickém jazyce

Experimental investigation of cold-spray Cr-coated cladding during normal and accident conditions

Popis výsledku anglicky

This paper investigates the experimental performance of cold-spray chromium (Cr) coating on Zircaloy-4. Previously, preliminary high temperature steam (500 to 1400 oC) and quench, room-temperature burst, autoclave creep, fatigue and corrosion testing along with thermo-mechanical modelling showed Cr-coating via cold spray process is a promising accident tolerant fuel (ATF) concept. Though, some concerns regarding crack propagation and rod bowing of the coated clad were also discussed. In this study, we expand the test matrix by investigating the accelerated creep and CRUD disposition after >800 hours of testing. The results indicate that the cold-spray chromium coating is expected to have similar performance during normal operation in terms of mechanical and thermal creep and CRUD deposition when compared to Zr-4. In addition, the results of ion irradiation of chrome and high temperature ballooning/burst are reported. It was inferred from ion irradiation study that chrome irradiation-induced swelling should be small during normal operating conditions. Noticeably superior performance in terms of burst time and burst size were also observed with the coated cladding samples at high temperature when compared to Zr-4 which was opposite of the previous findings at room temperature. Single-sided steam oxidation at 1200 oC were also performed. While weight gain was found to be considerably smaller, hydrogen concentration was found to be higher in Cr coated samples compared to Zr-4. These data serve as a basis to motivate future testing and development of coated cladding models to predict the performance of this ATF concept for future commercial deployment.

Druh

D - Stať ve sborníku

CEP obor

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OECD FORD obor

20305 - Nuclear related engineering; (nuclear physics to be 1.3);

Projekt

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Návaznosti

N - Vyzkumna aktivita podporovana z neverejnych zdroju

Rok uplatnění

2020

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název statě ve sborníku

Global/Top Fuel 2019: International Nuclear Fuel Cycle Conference/Light Water Reactor Fuel Performance Conference

ISBN

978-0-89448-771-2

ISSN

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e-ISSN

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Počet stran výsledku

10

Strana od-do

873-882

Název nakladatele

American Nuclear Society

Místo vydání

La Grande Park, Illinois

Místo konání akce

Seattle, WA

Datum konání akce

22. 9. 2019

Typ akce podle státní příslušnosti

WRD - Celosvětová akce

Kód UT WoS článku

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