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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.
 [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):
Journal ID: ISSN 1551-9295; applab; TRN: US1800409
Grant/Contract Number:
AC52-06NA25396; AC02-06CH11357
Accepted Manuscript
Journal Name:
Microscopy Today
Additional Journal Information:
Journal Volume: 25; Journal Issue: 06; Journal ID: ISSN 1551-9295
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
11 NUCLEAR FUEL CYCLE AND FUEL MATERIALS; HEDM; UO2; grain size; microstructure; nuclear fuels
OSTI Identifier:
Alternate Identifier(s):
OSTI ID: 1439862