Diffusion Couple Investigations of Ce-Sb Compounds with Fe

Journal Article · 01 February 2018 · Journal of Nuclear Materials

DOI: https://doi.org/10.1016/j.jnucmat.2017.12.008 · OSTI ID:1461090

Xie, Yi ^[1]; Zhang, Jinsuo ^[1]; Benson, Michael T.  ^[2]; Mariani, Robert D. ^[2]

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1. Virginia Polytechnic Inst. and State Univ. (Virginia Tech), Blacksburg, VA (United States)
2. Idaho National Lab. (INL), Idaho Falls, ID (United States)

Fission product lanthanides can migrate to the fuel periphery and react with cladding, causing fuel-cladding chemical interaction (FCCI). Adding a fuel additive dopant, such as Sb, can bind lanthanides, such as Ce, into metallic compounds to prevent migration. The present study focuses on the thermodynamic stability of Ce-Sb compounds when in contact with the major cladding constituent Fe by conducting diffusion couple tests. Here, Ce-Sb compounds have shown high thermodynamic stability as they did not react with Fe; when Fe-Sb compounds contacted with Ce, Sb was separated out of the Fe-Sb compounds and formed the higher stability Ce-Sb compounds.

• Research Organization: Idaho National Laboratory (INL), Idaho Falls, ID (United States)
• Sponsoring Organization: USDOE Office of Nuclear Energy (NE); USDOE
• Grant/Contract Number: AC07-05ID14517; NE0008574
• OSTI ID: 1461090
• Alternate ID(s): OSTI ID: 1548920
• Report Number(s): INL-JOU-18-50161-Rev000
• Journal Information: Journal of Nuclear Materials, Vol. 499, Issue NA; ISSN 0022-3115
• Publisher: ElsevierCopyright Statement
• Country of Publication: United States
• Language: English