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

F. Cappia; B. D. Miller; J. A. Aguiar; L. He; D. J. Murray; B. J. Frickey; J. D. Stanek; J. M. Harp

doi:10.1016/j.jnucmat.2019.151964

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

F. Cappia, B. D. Miller, J. A. Aguiar, L. He, D. J. Murray, B. J. Frickey, J. D. Stanek, J. M. Harp

Research output: Contribution to journal › Article › peer-review

16 Scopus citations

Abstract

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.

Original language	English
Article number	151964
Journal	Journal of Nuclear Materials
Volume	531
DOIs	https://doi.org/10.1016/j.jnucmat.2019.151964
State	Published - Apr 1 2020
Externally published	Yes

Funding

This work was funded by the U.S. Department of Energy , Office of Nuclear Energy under DOE Idaho Operations Office Contract DE-AC07-051D14517 as part of the Nuclear Science User Facilities (NSUF) Project 18-1538 . We thank the U.S. Department of Energy, Advanced Fuels Campaign of the Nuclear Technology Research and Development program in the Office of Nuclear Energy for allowing to use the material in this project. One of the authors acknowledges support through the INL Laboratory Directed Research & Development (LDRD) Program under DOE Idaho Operations Office Contract DE-AC07-05ID145142. The authors would like to acknowledge F. Rice, A. Winston, C. Knight, J. Merrill, J. Kay, M. Taylor, K. Williams, J. Wilding, P. Bragg (INL) for their technical and administrative support at various stages of this project. We thank D.L. Porter (INL) for critical review of this manuscript.

Funders	Funder number
U.S. Department of Energy	DE-AC07-051D14517, 18-1538
Office of Nuclear Energy
Laboratory Directed Research and Development	DE-AC07-05ID145142

Keywords

CsMoO
Electron microscopy
JOG
MOX
PIE
SFR

Access to Document

10.1016/j.jnucmat.2019.151964

Cite this

@article{17f7b545dce74c67909023dec183b60e,

title = "Electron microscopy characterization of fast reactor MOX Joint Oxyde-Gaine (JOG)",

abstract = "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.",

keywords = "CsMoO, Electron microscopy, JOG, MOX, PIE, SFR",

author = "F. Cappia and Miller, {B. D.} and Aguiar, {J. A.} and L. He and Murray, {D. J.} and Frickey, {B. J.} and Stanek, {J. D.} and Harp, {J. M.}",

note = "Publisher Copyright: {\textcopyright} 2020 Elsevier B.V.",

year = "2020",

month = apr,

day = "1",

doi = "10.1016/j.jnucmat.2019.151964",

language = "English",

volume = "531",

journal = "Journal of Nuclear Materials",

issn = "0022-3115",

publisher = "Elsevier",

}

TY - JOUR

T1 - Electron microscopy characterization of fast reactor MOX Joint Oxyde-Gaine (JOG)

AU - Cappia, F.

AU - Miller, B. D.

AU - Aguiar, J. A.

AU - He, L.

AU - Murray, D. J.

AU - Frickey, B. J.

AU - Stanek, J. D.

AU - Harp, J. M.

PY - 2020/4/1

Y1 - 2020/4/1

N2 - 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.

AB - 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.

KW - CsMoO

KW - Electron microscopy

KW - JOG

KW - MOX

KW - PIE

KW - SFR

UR - http://www.scopus.com/inward/record.url?scp=85078913189&partnerID=8YFLogxK

U2 - 10.1016/j.jnucmat.2019.151964

DO - 10.1016/j.jnucmat.2019.151964

M3 - Article

AN - SCOPUS:85078913189

SN - 0022-3115

VL - 531

JO - Journal of Nuclear Materials

JF - Journal of Nuclear Materials

M1 - 151964

ER -

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

Abstract

Funding

Keywords

Access to Document

Other files and links

Fingerprint

Cite this