skip to main content
DOE PAGES title logo U.S. Department of Energy
Office of Scientific and Technical Information

Title: Fabrication and thermophysical property characterization of UN/U3Si2 composite fuel forms

Abstract

High uranium density composite fuels composed of UN and U3Si2 have been fabricated using a liquid phase sintering route at temperatures between 1873 K and 1973 K and spanning compositions of 10 vol% to 40 vol% U3Si2. Microstructural analysis and phase characterization revealed the formation of an U-Si-N phase of unknown structure. Microcracking was observed in the U-Si portion of the composite microstructure that likely originates from the mismatched coefficient of thermal expansion between the UN and U3Si2 leading to stresses on heating and cooling of the composite. Thermal expansion coefficient, thermal diffusivity, and thermal conductivity were characterized for each of the compositions as a function of temperature to 1673 K. Hysteresis is observed in the thermal diffusivity for the 20 vol% through 40 vol% specimens between room temperature and 1273 K, which is attributed to the microcracking in the U-Si phase. Thermal conductivity of the composites was modeled using the MOOSE framework based on the collected microstructure data. In conclusion, the impact of irradiation on thermal conductivity was also simulated for this class of composite materials.

Authors:
 [1];  [2];  [1]; ORCiD logo [1]
  1. Los Alamos National Lab. (LANL), Los Alamos, NM (United States)
  2. Los Alamos National Lab. (LANL), Los Alamos, NM (United States); Univ. of California, Irvine, CA (United States)
Publication Date:
Research Org.:
Los Alamos National Lab. (LANL), Los Alamos, NM (United States)
Sponsoring Org.:
USDOE Office of Nuclear Energy (NE)
OSTI Identifier:
1414134
Alternate Identifier(s):
OSTI ID: 1549217
Report Number(s):
LA-UR-17-20508
Journal ID: ISSN 0022-3115; TRN: US1800659
Grant/Contract Number:  
AC52-06NA25396; NE0000711
Resource Type:
Accepted Manuscript
Journal Name:
Journal of Nuclear Materials
Additional Journal Information:
Journal Volume: 495; 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; Material Science; Accident tolerant fuels; Composite nuclear fuel; Uranium mononitride; Uranium silicide

Citation Formats

White, Joshua Taylor, Travis, Austin William, Dunwoody, John Tyler, and Nelson, Andrew Thomas. Fabrication and thermophysical property characterization of UN/U3Si2 composite fuel forms. United States: N. p., 2017. Web. https://doi.org/10.1016/j.jnucmat.2017.08.041.
White, Joshua Taylor, Travis, Austin William, Dunwoody, John Tyler, & Nelson, Andrew Thomas. Fabrication and thermophysical property characterization of UN/U3Si2 composite fuel forms. United States. https://doi.org/10.1016/j.jnucmat.2017.08.041
White, Joshua Taylor, Travis, Austin William, Dunwoody, John Tyler, and Nelson, Andrew Thomas. Thu . "Fabrication and thermophysical property characterization of UN/U3Si2 composite fuel forms". United States. https://doi.org/10.1016/j.jnucmat.2017.08.041. https://www.osti.gov/servlets/purl/1414134.
@article{osti_1414134,
title = {Fabrication and thermophysical property characterization of UN/U3Si2 composite fuel forms},
author = {White, Joshua Taylor and Travis, Austin William and Dunwoody, John Tyler and Nelson, Andrew Thomas},
abstractNote = {High uranium density composite fuels composed of UN and U3Si2 have been fabricated using a liquid phase sintering route at temperatures between 1873 K and 1973 K and spanning compositions of 10 vol% to 40 vol% U3Si2. Microstructural analysis and phase characterization revealed the formation of an U-Si-N phase of unknown structure. Microcracking was observed in the U-Si portion of the composite microstructure that likely originates from the mismatched coefficient of thermal expansion between the UN and U3Si2 leading to stresses on heating and cooling of the composite. Thermal expansion coefficient, thermal diffusivity, and thermal conductivity were characterized for each of the compositions as a function of temperature to 1673 K. Hysteresis is observed in the thermal diffusivity for the 20 vol% through 40 vol% specimens between room temperature and 1273 K, which is attributed to the microcracking in the U-Si phase. Thermal conductivity of the composites was modeled using the MOOSE framework based on the collected microstructure data. In conclusion, the impact of irradiation on thermal conductivity was also simulated for this class of composite materials.},
doi = {10.1016/j.jnucmat.2017.08.041},
journal = {Journal of Nuclear Materials},
number = C,
volume = 495,
place = {United States},
year = {2017},
month = {9}
}

Journal Article:

Citation Metrics:
Cited by: 5 works
Citation information provided by
Web of Science

Save / Share:

Works referenced in this record:

Investigation of the reaction UO2+x + PuO2 + C + N2 by thermogravimetry
journal, August 1988


Preparation of uranium nitride in the form of microspheres
journal, June 1992


Sintering of UN as a Function of Temperature and N2 Pressure
journal, July 1971


Kinetics of the oxidation of UN and U(CO) in carbon dioxide, steam and water at elevated temperatures
journal, January 1966


Oxidation of uranium mononitride and uranium monocarbide
journal, January 1966

  • Dell, R. M.; Wheeler, V. J.; McIver, E. J.
  • Transactions of the Faraday Society, Vol. 62
  • DOI: 10.1039/tf9666203591

Hydrolysis of uranium mononitride
journal, January 1967

  • Dell, R. M.; Wheeler, V. J.; Bridger, N. J.
  • Transactions of the Faraday Society, Vol. 63
  • DOI: 10.1039/tf9676301286

Oxidation of uranium mononitride
journal, September 1975


Oxidation and hydrolysis kinetic studies on UN
journal, November 1991


Dual phase MgO–ZrO2 ceramics for use in LWR inert matrix fuel
journal, June 2005


Neutronic performance of uranium nitride composite fuels in a PWR
journal, August 2014


Thermophysical properties of U 3 Si 2 to 1773 K
journal, September 2015


Uranium silicide pellet fabrication by powder metallurgy for accident tolerant fuel evaluation and irradiation
journal, November 2015


Oxidation behavior of U-Si compounds in air from 25 to 1000 C
journal, February 2017


Degradation of UN and UN–U 3 Si 2 pellets in steam environment
journal, January 2017

  • Lopes, Denise Adorno; Uygur, Selim; Johnson, Kyle
  • Journal of Nuclear Science and Technology, Vol. 54, Issue 4
  • DOI: 10.1080/00223131.2016.1274689

Development of an accident-tolerant fuel composite from uranium mononitride (UN) and uranium sesquisilicide (U3 Si2) with increased uranium loading
journal, April 2016


Fabrication and microstructural analysis of UN-U3Si2 composites for accident tolerant fuel applications
journal, August 2016


Thermodynamic study of the U–Si system
journal, May 2009


A new high-pressure phase of uranium nitride studied by X-ray diffraction and synchrotron radiation
journal, February 1985

  • Staun Olsen, J.; Gerward, L.; Benedict, U.
  • Journal of Applied Crystallography, Vol. 18, Issue 1
  • DOI: 10.1107/S0021889885009736

Structural chemistry and magnetic behavior of binary uranium silicides
journal, April 1992


NIH Image to ImageJ: 25 years of image analysis
journal, June 2012

  • Schneider, Caroline A.; Rasband, Wayne S.; Eliceiri, Kevin W.
  • Nature Methods, Vol. 9, Issue 7
  • DOI: 10.1038/nmeth.2089

Improvement of the mathematical modeling of flash measurements
journal, January 2002

  • Blumm, Jürgen; Opfermann, Johannes
  • High Temperatures-High Pressures, Vol. 34, Issue 5
  • DOI: 10.1068/htjr061

Flash Method of Determining Thermal Diffusivity, Heat Capacity, and Thermal Conductivity
journal, September 1961

  • Parker, W. J.; Jenkins, R. J.; Butler, C. P.
  • Journal of Applied Physics, Vol. 32, Issue 9
  • DOI: 10.1063/1.1728417

Material property correlations for uranium mononitride
journal, May 1990


Thermophysical properties of U3Si5 to 1773 K
journal, January 2015


Material property correlations for uranium mononitride
journal, May 1990


Material property correlations for uranium mononitride
journal, May 1990


Evaluation of Rule-of-Mixtures Predictions of Thermal Expansion in Powder-Processed Ni-Al2O3 Composites
journal, October 1999


Theory of thermal expansion of composites
journal, March 1988

  • Klemens, P. G.
  • International Journal of Thermophysics, Vol. 9, Issue 2
  • DOI: 10.1007/BF00504237

OOF: an image-based finite-element analysis of material microstructures
journal, January 2001

  • Langer, S. A.; Fuller, E. R.; Carter, W. C.
  • Computing in Science & Engineering, Vol. 3, Issue 3
  • DOI: 10.1109/5992.919261

Microstructural modeling of thermal conductivity of high burn-up mixed oxide fuel
journal, January 2014


MOOSE: A parallel computational framework for coupled systems of nonlinear equations
journal, October 2009


Phase-field simulation of thermal conductivity in porous polycrystalline microstructures
journal, August 2008

  • Millett, Paul C.; Wolf, Dieter; Desai, Tapan
  • Journal of Applied Physics, Vol. 104, Issue 3
  • DOI: 10.1063/1.2964116

Corrigendum to “Thermophysical properties of U3Si2 to 1773 K” [J. Nucl. Mater. 464 (2015) 275–280]
journal, February 2017


Effect of Fission Products and Oxygen and Carbon Impurities in (U, Pu)N on the Heat-and-Mass Transfer Coefficients and Xenon Yield
journal, November 2016


Thermal conductivity of neutron irradiated Be12Ti
journal, September 2003


Amorphization of U3Si2 by ion or neutron irradiation
journal, June 1996


Short Communication on “In-situ TEM ion irradiation investigations on U3Si2 at LWR temperatures”
journal, February 2017


Positions of the Oxygen Atoms in UO2.13
journal, February 1963


Magnetic properties of a mass-enhanced ferromagnet U2PtSi3
journal, February 1992


    Works referencing / citing this record:

    Uranium nitride-silicide advanced nuclear fuel: higher efficiency and greater safety
    journal, October 2018

    • Wilson, Tashiema L.; Moore, Emily E.; Adorno Lopes, Denise
    • Advances in Applied Ceramics, Vol. 117, Issue sup1
    • DOI: 10.1080/17436753.2018.1521607

    A first-principles study on the influences of metal species Al, Zr, Mo and Tc on the mechanical properties of U 3 Si 2
    journal, January 2020

    • Gao, Haigen; Liu, Yande; Hu, Jun
    • Physical Chemistry Chemical Physics, Vol. 22, Issue 4
    • DOI: 10.1039/c9cp03814k