Electron microscopy characterization of fast reactor MOX Joint Oxyde-Gaine (JOG)

The composition and crystal structure of the “Joint Oxyde Gaine” (JOG) has been investigated by means of electron microscopy. Microstructural characterization reveals a highly heterogeneous porous structure with inclusions containing both fission products and cladding components. Major fission produ...

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Published in:Journal of nuclear materials 2020-04, Vol.531 (C), p.151964, Article 151964
Main Authors: Cappia, F., Miller, B.D., Aguiar, J.A., He, L., Murray, D.J., Frickey, B.J., Stanek, J.D., Harp, J.M.
Format: Article
Language:English
Subjects:
Chromium
Combinatorial analysis
Crystal structure
Crystallites
Crystals
Cs2MoO4
Electron microscopy
Fission products
Inclusions
Iron
JOG
Mapping
Microscopy
MOX
PIE
Precipitates
SFR
Zirconium
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cited_by cdi_FETCH-LOGICAL-c411t-5d907d38b1d53d953785bfb158a95e581d41d4c80e0376c0db214e5cf662c4663
cites cdi_FETCH-LOGICAL-c411t-5d907d38b1d53d953785bfb158a95e581d41d4c80e0376c0db214e5cf662c4663
container_end_page
container_issue C
container_start_page 151964
container_title Journal of nuclear materials
container_volume 531
creator Cappia, F.
Miller, B.D.
Aguiar, J.A.
He, L.
Murray, D.J.
Frickey, B.J.
Stanek, J.D.
Harp, J.M.
description The composition and crystal structure of the “Joint Oxyde Gaine” (JOG) has been investigated by means of electron microscopy. Microstructural characterization reveals a highly heterogeneous porous structure with inclusions containing both fission products and cladding components. Major fission products detected, other than Cs and Mo, are Te, I, Zr and Ba. The layer is composed by sub-micrometric crystallites. The diffraction data refinement, together with chemical mapping, confirms the presence of Cs2MoO4, which is the major component of the JOG. However, combinatorial analyses reveal that other non-stoichiometric phases are possible, highlighting the complex nature of the crystalline structure of the JOG. Fe is found in metallic Pd-rich precipitates with structure compatible with the tetragonal structure of FePd alloy. Cr is found in different locations of the JOG, in oxide form, but no structural data could be obtained due to local beam sensitization of the sample in those areas.
doi_str_mv 10.1016/j.jnucmat.2019.151964
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subjects Chromium
Combinatorial analysis
Crystal structure
Crystallites
Crystals
Cs2MoO4
Electron microscopy
Fission products
Inclusions
Iron
JOG
Mapping
Microscopy
MOX
PIE
Precipitates
SFR
Zirconium
title Electron microscopy characterization of fast reactor MOX Joint Oxyde-Gaine (JOG)
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