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Title: Experimental assessment of antimony (Sb) in pure uranium for immobilizing fission product lanthanides

Abstract

The use of fuel additives is one of the concepts to mitigate fuel cladding chemical interaction (FCCI) for metallic fuel because fission product lanthanides are expected to be immobilized by the additive. Antimony (Sb) has been discovered to be a good candidate in UZr fuel. The present study focuses on its mechanism for immobilization in pure uranium, U–4Sb alloy was fabricated to understand the Sb behavior, while U–4Sb–4Ce was fabricated to simulate the case when lanthanides are generated. Both of the as-cast and annealed samples were characterized by scanning electron microscope (SEM) and energy dispersive spectrometer (EDS). U–Sb precipitates are formed in U–4Sb alloy, while U–Sb and Ce–Sb were found in U–4Sb–4Ce alloy, thermal exposure does not change the Sb-precipitation morphologies or chemical composition. Furthermore, diffusion couple tests between those alloys and cladding materials (Fe or HT9) under 650 °C for 500 h were performed and analyzed using SEM/EDS. Diffusion couple tests demonstrate the reaction between cladding and uranium, while no reaction between Sb-precipitations and cladding materials was found.

Authors:
ORCiD logo [1];  [2];  [2];  [1];  [2];  [1]
  1. Virginia Polytechnic Inst. and State Univ. (Virginia Tech), Blacksburg, VA (United States)
  2. Idaho National Lab. (INL), Idaho Falls, ID (United States)
Publication Date:
Research Org.:
Idaho National Laboratory (INL), Idaho Falls, ID (United States); Virginia Polytechnic Inst. and State Univ. (Virginia Tech), Blacksburg, VA (United States); The Ohio State Univ., Columbus, OH (United States)
Sponsoring Org.:
USDOE Office of Nuclear Energy (NE)
OSTI Identifier:
1608935
Alternate Identifier(s):
OSTI ID: 1615384
Grant/Contract Number:  
AC07-05ID14517; NE0008574
Resource Type:
Accepted Manuscript
Journal Name:
Journal of Nuclear Materials
Additional Journal Information:
Journal Volume: 534; Journal Issue: C; Journal ID: ISSN 0022-3115
Publisher:
Elsevier
Country of Publication:
United States
Language:
English
Subject:
11 NUCLEAR FUEL CYCLE AND FUEL MATERIALS; Metal fuel; Additive antimony; Diffusion couple tests; SEM/EDS

Citation Formats

Zhuo, Weiqian, Xie, Yi, Benson, Michael T., Wu, Huali, Mariani, Robert D., and Zhang, Jinsuo. Experimental assessment of antimony (Sb) in pure uranium for immobilizing fission product lanthanides. United States: N. p., 2020. Web. doi:10.1016/j.jnucmat.2020.152135.
Zhuo, Weiqian, Xie, Yi, Benson, Michael T., Wu, Huali, Mariani, Robert D., & Zhang, Jinsuo. Experimental assessment of antimony (Sb) in pure uranium for immobilizing fission product lanthanides. United States. https://doi.org/10.1016/j.jnucmat.2020.152135
Zhuo, Weiqian, Xie, Yi, Benson, Michael T., Wu, Huali, Mariani, Robert D., and Zhang, Jinsuo. Mon . "Experimental assessment of antimony (Sb) in pure uranium for immobilizing fission product lanthanides". United States. https://doi.org/10.1016/j.jnucmat.2020.152135. https://www.osti.gov/servlets/purl/1608935.
@article{osti_1608935,
title = {Experimental assessment of antimony (Sb) in pure uranium for immobilizing fission product lanthanides},
author = {Zhuo, Weiqian and Xie, Yi and Benson, Michael T. and Wu, Huali and Mariani, Robert D. and Zhang, Jinsuo},
abstractNote = {The use of fuel additives is one of the concepts to mitigate fuel cladding chemical interaction (FCCI) for metallic fuel because fission product lanthanides are expected to be immobilized by the additive. Antimony (Sb) has been discovered to be a good candidate in UZr fuel. The present study focuses on its mechanism for immobilization in pure uranium, U–4Sb alloy was fabricated to understand the Sb behavior, while U–4Sb–4Ce was fabricated to simulate the case when lanthanides are generated. Both of the as-cast and annealed samples were characterized by scanning electron microscope (SEM) and energy dispersive spectrometer (EDS). U–Sb precipitates are formed in U–4Sb alloy, while U–Sb and Ce–Sb were found in U–4Sb–4Ce alloy, thermal exposure does not change the Sb-precipitation morphologies or chemical composition. Furthermore, diffusion couple tests between those alloys and cladding materials (Fe or HT9) under 650 °C for 500 h were performed and analyzed using SEM/EDS. Diffusion couple tests demonstrate the reaction between cladding and uranium, while no reaction between Sb-precipitations and cladding materials was found.},
doi = {10.1016/j.jnucmat.2020.152135},
journal = {Journal of Nuclear Materials},
number = C,
volume = 534,
place = {United States},
year = {Mon Apr 06 00:00:00 EDT 2020},
month = {Mon Apr 06 00:00:00 EDT 2020}
}

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