Breakaway oxidation of zirconium alloys exposed to steam around 1000 °C

Matthieu Le Saux; Jean-Christophe Brachet; Valérie Vandenberghe; Antoine Ambard; Raphaël Chosson

doi:10.1016/j.corsci.2020.108936

Journal articles

Breakaway oxidation of zirconium alloys exposed to steam around 1000 °C

Matthieu Le Saux ^{1, 2} Jean-Christophe Brachet ² Valérie Vandenberghe ² Antoine Ambard ³ Raphaël Chosson ⁴

1 IRDL - Institut de Recherche Dupuy de Lôme

2 CEA-DES (ex-DEN) - CEA-Direction des Energies (ex-Direction de l'Energie Nucléaire)

3 EDF R&D - EDF R&D

4 FRAMATOME

Abstract : The breakaway oxidation of Zircaloy-4 and M5 Framatome alloys oxidized in flowing steam around 1000 °C was studied. The influences of oxidation temperature between 950 and 1050 °C, one-side versus two-side oxidation and chemical variations around the nominal composition of M5 Framatome were investigated. Breakaway oxidation is sensitive to the oxidation temperature, the material and the oxidation type. A phenomenological mechanism for breakaway oxidation is postulated on the basis of microstructural and microchemical analyses.

Keywords : LOCA Zircaloy-4 M5 Framatome Breakaway oxidation High temperature

Document type :

Journal articles

Domain :

Engineering Sciences [physics]

Engineering Sciences [physics] / Materials

Complete list of metadatas

https://hal-ensta-bretagne.archives-ouvertes.fr/hal-02924036
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Submitted on : Thursday, August 27, 2020 - 4:26:02 PM
Last modification on : Friday, September 4, 2020 - 3:25:56 AM

Breakaway oxidation of zirconium alloys exposed to steam around 1000 °C

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Breakaway oxidation of zirconium alloys exposed to steam around 1000 °C