Zircaloy-4 high temperature oxidation in atmospheres representative of SFP-LOCA: Investigation of the influence of a low temperature pre-oxidation scale

Duriez, Christian; Coindreau, Olivia; Gestin, Mathilde; Kasperski, Anne; Peres, Véronique; Pijolat, Michèle; Buscail, Henri; Issartel, Christophe; Rolland, Raphaël; Mermoux, Michel

doi:10.1016/j.jnucmat.2018.10.019

Cited by 8 publications

(63 citation statements)

References 40 publications

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“…Corrosion scales formed on the Zy-4 alloy are known to show a non-uniform microstructure in the direction parallel to the surface, with alternatively dense veins and more cracked regions. A possible influence of such non-uniformities on the oxygen diffusion has been discussed with more details in [20]. This map is consistent with the low weight gain during the HT exposure, and indicates that after 125 min at 850°C in the reacting atmosphere, some barrier effect of the pre-oxide scale is effective far from the sample edges.…”

supporting

confidence: 66%

“…The objective of the next section is to quantify this effect. Strong hydrogen incorporation during high temperature oxidation of Zircaloy-4 was already observed in nitrogensteam [20] as well as in air-steam mixtures [24]. A mechanism, involving hydrogen trapping and concentrating in the porosities of the oxide close to the reacting surface, was proposed to explain hydrogen incorporation during steam oxidation of zirconium alloy at high temperature [25].…”

Section: Use Of Hydrogen Released In the Gas Phase And Incorporated Imentioning

confidence: 87%

“…Detailed characterization of the pre-oxide scales obtained with this protocol had been performed using XRD, Raman spectroscopy and SEM/FEG observations. Results were presented in previous papers, and the representativeness of the obtained scale regarding in-PWR corrosion was discussed as well [19,20].…”

Section: Samplesmentioning

confidence: 94%

“…4c). To suppress this edge effect, different solutions were considered in [20]. The results obtained with pre-oxidized beads revealed a very efficient protective effect of the pre-oxide scale regarding air attack at high temperature.…”

Section: First Acceleration Periodmentioning

confidence: 99%

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Experimental study of oxidation in oxygen, nitrogen and steam mixtures at 850∘C of pre-oxidized Zircaloy-4

Gestin

Mermoux

Coindreau

et al. 2019

Journal of Nuclear Materials

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HAL is a multidisciplinary open access archive for the deposit and dissemination of scientific research documents, whether they are published or not. The documents may come from teaching and research institutions in France or abroad, or from public or private research centers. L'archive ouverte pluridisciplinaire HAL, est destinée au dépôt et à la diffusion de documents scientifiques de niveau recherche, publiés ou non, émanant des établissements d'enseignement et de recherche français ou étrangers, des laboratoires publics ou privés.

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supporting

confidence: 66%

Section: Use Of Hydrogen Released In the Gas Phase And Incorporated Imentioning

confidence: 87%

Section: Samplesmentioning

confidence: 94%

Section: First Acceleration Periodmentioning

confidence: 99%

See 2 more Smart Citations

Experimental study of oxidation in oxygen, nitrogen and steam mixtures at 850∘C of pre-oxidized Zircaloy-4

Gestin

Mermoux

Coindreau

et al. 2019

Journal of Nuclear Materials

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“…How to cite this article: M. Mermoux, C. Duriez, J Raman Spectrosc 2021, 52 (12), 2131. https://doi. org/10.1002/jrs.6181…”

Section: Supporting Informationmentioning

confidence: 99%

Raman imaging in corrosion science: High‐temperature oxidation of the zirconium alloys used in the nuclear industry as an example

Mermoux

Duriez

2021

J Raman Spectroscopy

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Successive technological improvements have made Raman imaging systems very efficient. Raman imaging applications now cover a wide range of scientific fields, including high-temperature materials corrosion, also known as dry corrosion. The analysis of the phenomena occurring during corrosion requires knowledge in metallurgy, thermodynamics, chemical kinetics, solid-state chemistry, and physics. Part of this information (crystallographic phases, stress state, oxygen transport, etc.) can be obtained, at least qualitatively, from the analysis of Raman images of the oxidation layer. Throughout this paper, we consider as a prototypal example the oxidation of a particular zirconium alloy, Zircaloy-4, used in the nuclear industry as cladding materials in light-water reactors. Through some examples, the aim of the present paper is to describe what kind of information this method can bring, to review its merits and weaknesses. The analysis protocols methods described herein are not exhaustive, but most probably represent a simple way to read and understand the Raman images. These few examples show that rather subtle details that concern phase distribution, strain, and oxygen transport can effectively be captured by this method. Most probably, Raman imaging may be applied to other alloys or systems as well.

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The Effect of Air Fraction in Steam on the Embrittlement of Zry-4 Fuel Cladding Oxidized at 1273–1573 K

Negyesi

Amaya

2019

Oxid Met

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Zircaloy-4 high temperature oxidation in atmospheres representative of SFP-LOCA: Investigation of the influence of a low temperature pre-oxidation scale

Cited by 8 publications

References 40 publications

Experimental study of oxidation in oxygen, nitrogen and steam mixtures at 850∘C of pre-oxidized Zircaloy-4

Experimental study of oxidation in oxygen, nitrogen and steam mixtures at 850∘C of pre-oxidized Zircaloy-4

Raman imaging in corrosion science: High‐temperature oxidation of the zirconium alloys used in the nuclear industry as an example

The Effect of Air Fraction in Steam on the Embrittlement of Zry-4 Fuel Cladding Oxidized at 1273–1573 K

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