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Title: Non-Destructive Characterization of UO2+x Nuclear Fuels

This article describes the effect of fabrication conditions on as-sintered microstructures of various stoichiometric ratios of uranium dioxide, UO 2+x, with the aim of enhancing the understanding of fabrication process and developing and validating a predictive microstructurebased model for fuel performance. We demonstrate the ability of novel, non-destructive methods such as near-field high-energy X-ray diffraction microscopy (nf-HEDM) and micro-computed tomography (μ-CT) to probe bulk samples of high-Z materials by non-destructively characterizing three samples: UO 2.00, UO 2.11, and UO 2.16, which were sintered at 1450°C for 4 hours. The measured 3D microstructures revealed that grain size and porosity were influenced by deviation from stoichiometry.
Authors:
 [1] ;  [1] ;  [1] ;  [1] ;  [1] ;  [1] ;  [2] ;  [3]
  1. Los Alamos National Lab. (LANL), Los Alamos, NM (United States)
  2. Carnegie Mellon Univ., Pittsburgh, PA (United States)
  3. Argonne National Lab. (ANL), Argonne, IL (United States)
Publication Date:
Report Number(s):
LA-UR-17-28316
Journal ID: ISSN 1551-9295; applab; TRN: US1800409
Grant/Contract Number:
AC52-06NA25396; AC02-06CH11357
Type:
Accepted Manuscript
Journal Name:
Microscopy Today
Additional Journal Information:
Journal Volume: 25; Journal Issue: 06; Journal ID: ISSN 1551-9295
Publisher:
Cambridge University Press
Research Org:
Los Alamos National Lab. (LANL), Los Alamos, NM (United States); Argonne National Lab. (ANL), Argonne, IL (United States)
Sponsoring Org:
USDOE; USDOE Office of Science - Office of Basic Energy Sciences - Scientific User Facilities Division; Los Alamos National Laboratory (LANL) - Laboratory Directed Research and Development (LDRL)
Country of Publication:
United States
Language:
English
Subject:
11 NUCLEAR FUEL CYCLE AND FUEL MATERIALS; HEDM; UO2; grain size; microstructure; nuclear fuels
OSTI Identifier:
1412908
Alternate Identifier(s):
OSTI ID: 1439862

Pokharel, Reeju, Brown, Donald W., Clausen, Bjørn, Byler, Darrin D., Ickes, Timothy L., McClellan, Kenneth J., Suter, Robert M., and Kenesei, Peter. Non-Destructive Characterization of UO2+x Nuclear Fuels. United States: N. p., Web. doi:10.1017/S155192951700102X.
Pokharel, Reeju, Brown, Donald W., Clausen, Bjørn, Byler, Darrin D., Ickes, Timothy L., McClellan, Kenneth J., Suter, Robert M., & Kenesei, Peter. Non-Destructive Characterization of UO2+x Nuclear Fuels. United States. doi:10.1017/S155192951700102X.
Pokharel, Reeju, Brown, Donald W., Clausen, Bjørn, Byler, Darrin D., Ickes, Timothy L., McClellan, Kenneth J., Suter, Robert M., and Kenesei, Peter. 2017. "Non-Destructive Characterization of UO2+x Nuclear Fuels". United States. doi:10.1017/S155192951700102X. https://www.osti.gov/servlets/purl/1412908.
@article{osti_1412908,
title = {Non-Destructive Characterization of UO2+x Nuclear Fuels},
author = {Pokharel, Reeju and Brown, Donald W. and Clausen, Bjørn and Byler, Darrin D. and Ickes, Timothy L. and McClellan, Kenneth J. and Suter, Robert M. and Kenesei, Peter},
abstractNote = {This article describes the effect of fabrication conditions on as-sintered microstructures of various stoichiometric ratios of uranium dioxide, UO2+x, with the aim of enhancing the understanding of fabrication process and developing and validating a predictive microstructurebased model for fuel performance. We demonstrate the ability of novel, non-destructive methods such as near-field high-energy X-ray diffraction microscopy (nf-HEDM) and micro-computed tomography (μ-CT) to probe bulk samples of high-Z materials by non-destructively characterizing three samples: UO2.00, UO2.11, and UO2.16, which were sintered at 1450°C for 4 hours. The measured 3D microstructures revealed that grain size and porosity were influenced by deviation from stoichiometry.},
doi = {10.1017/S155192951700102X},
journal = {Microscopy Today},
number = 06,
volume = 25,
place = {United States},
year = {2017},
month = {10}
}