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Title: Diffusion Couple Investigations of Ce-Sb Compounds with Fe

Journal Article · · Journal of Nuclear Materials
 [1];  [1]; ORCiD logo [2];  [2]
  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