Characterization of eutectic reaction of Cr and Cr/CrN coated zircaloy accident tolerant fuel cladding

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68407700%3A21340%2F23%3A00368809" target="_blank" >RIV/68407700:21340/23:00368809 - isvavai.cz</a>

Výsledek na webu

<a href="https://doi.org/10.1016/j.net.2023.06.015" target="_blank" >https://doi.org/10.1016/j.net.2023.06.015</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.net.2023.06.015" target="_blank" >10.1016/j.net.2023.06.015</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Characterization of eutectic reaction of Cr and Cr/CrN coated zircaloy accident tolerant fuel cladding

Popis výsledku v původním jazyce

Eutectic reactions of five kinds of Cr-coated Zr alloy cladding with different base materials (Zr–Nb–Sn alloy or Zr–Nb alloy), different coating thicknesses (6~22.5 μm), and different coating materials (Cr single layer or Cr/CrN bilayer) were studied using Differential Scanning Calorimetry (DSC). The DSC experiments demonstrated that the onset temperatures of the Cr single layer coated specimens were almost identical to ~1308 °C, regardless of base materials or coating thicknesses. This study demonstrated that the Cr/CrN bilayer coated Zr–Nb–Sn alloy has a slightly (~10 °C) higher eutectic onset temperature compared to the single Cr-coated specimen. The eutectic region characterized by post-eutectic microstructure proportionally increases with coating thickness. The post-eutectic characterization with different holding times at high temperature (1310–1330 °C) reveals that progression of Zr–Cr eutectic requires time, and it dramatically changed with exposure time and temperature. The practical value of the time gain in non-instantaneous eutectic formation in terms of safety margin, however, seems to be limited.

Název v anglickém jazyce

Characterization of eutectic reaction of Cr and Cr/CrN coated zircaloy accident tolerant fuel cladding

Popis výsledku anglicky

Eutectic reactions of five kinds of Cr-coated Zr alloy cladding with different base materials (Zr–Nb–Sn alloy or Zr–Nb alloy), different coating thicknesses (6~22.5 μm), and different coating materials (Cr single layer or Cr/CrN bilayer) were studied using Differential Scanning Calorimetry (DSC). The DSC experiments demonstrated that the onset temperatures of the Cr single layer coated specimens were almost identical to ~1308 °C, regardless of base materials or coating thicknesses. This study demonstrated that the Cr/CrN bilayer coated Zr–Nb–Sn alloy has a slightly (~10 °C) higher eutectic onset temperature compared to the single Cr-coated specimen. The eutectic region characterized by post-eutectic microstructure proportionally increases with coating thickness. The post-eutectic characterization with different holding times at high temperature (1310–1330 °C) reveals that progression of Zr–Cr eutectic requires time, and it dramatically changed with exposure time and temperature. The practical value of the time gain in non-instantaneous eutectic formation in terms of safety margin, however, seems to be limited.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

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

Projekt

Výsledek vznikl pri realizaci vícero projektů. Více informací v záložce Projekty.

Návaznosti

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Rok uplatnění

2023

Kód důvěrnosti údajů

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

Název periodika

Nuclear Engineering and Technology

ISSN

1738-5733

e-ISSN

2234-358X

Svazek periodika

55

Číslo periodika v rámci svazku

10

Stát vydavatele periodika

KR - Korejská republika

Počet stran výsledku

8

Strana od-do

3535-3542

Kód UT WoS článku

001096293500001

EID výsledku v databázi Scopus

2-s2.0-85165246258