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Title: Determining local thermal transport in a composite uranium-nitride/silicide nuclear fuel using square-pulse transient thermoreflectance technique

Journal Article · · Journal of Nuclear Materials

Laser-based techniques have become an appealing option for determining the thermal diffusivities (D) and conductivities (k) of nuclear materials that would otherwise prove too hazardous or difficult to measure otherwise. These techniques have enabled non-destructive and non-contact thermal transport measurements with micron-level spatial resolution. In this study, a new time-domain technique known as square-wave pulse thermoreflectance (SPTR) is described and used to determine D values of both uranium sesquisilicide (U3Si2) and uranium nitride (UN) phases in a composite fuel. An extensive sensitivity analysis was conducted that identified the optimal measurement parameters of standard materials with a range of thermal transport properties comparable to those of various fuel types. The standards were measured using both SPTR as well as a spatial-domain thermoreflectance technique (SDTR). Several U3Si2 and UN phase regions of polished UN/U3Si2 (70/30 vol.%) samples were measured using both methods, and the resulting calculated D and k values are reported, with both techniques showing excellent agreement between samples. Finally, the ability to use the technique for local diffusivity mapping was demonstrated over a multiphase region, and could be used to determine thermal transport properties in precipitates, secondary phases, and irradiation-damaged regions of post-irradiated fuel samples.

Research Organization:
Idaho National Laboratory (INL), Idaho Falls, ID (United States)
Sponsoring Organization:
USDOE Office of Nuclear Energy (NE), Fuel Cycle Technologies; USDOE Office of Nuclear Energy (NE), Fuel Cycle Technologies (NE-5)
Grant/Contract Number:
AC07-05ID14517
OSTI ID:
1642923
Alternate ID(s):
OSTI ID: 1572569; OSTI ID: 1735523
Report Number(s):
INL-JOU-19-54759-Rev000; INL/CON-19-52657-Rev001; TRN: US2201951
Journal Information:
Journal of Nuclear Materials, Vol. 528; ISSN 0022-3115
Publisher:
ElsevierCopyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 6 works
Citation information provided by
Web of Science

References (48)

Modeling of constituent redistribution in U–Pu–Zr metallic fuel journal December 2006
The high burn-up structure in nuclear fuel journal December 2010
Thermal conductivity evaluation of high burnup mixed-oxide (MOX) fuel pellet journal July 2011
Thermal diffusivity of homogeneous SBR MOX fuel with a burn-up of 35MWd/kgHM journal May 2010
Thermal conductivity of homogeneous and heterogeneous MOX fuel with up to 44MWd/kgHM burn-up journal May 2011
Modeling constituent redistribution in U–Pu–Zr metallic fuel using the advanced fuel performance code BISON journal May 2015
Thermocouples for High-Temperature In-Pile Testing journal December 2006
Using Coupled Mesoscale Experiments and Simulations to Investigate High Burn-Up Oxide Fuel Thermal Conductivity journal October 2014
Thermophysical properties of U 3 Si 2 to 1773 K journal September 2015
EBSD and TEM characterization of high burn-up mixed oxide fuel journal January 2014
Microstructural modeling of thermal conductivity of high burn-up mixed oxide fuel journal January 2014
Microbeam Analysis of Irradiated Materials: Practical Aspects journal May 2007
Effect of burn-up on the thermal conductivity of uranium–gadolinium dioxide up to 100 GWd/tHM journal October 2014
Quantities, terminology, and symbols in photothermal and related spectroscopies (IUPAC Recommendations 2004) journal January 2004
Photothermal displacement technique: A method to determine the variation of thermal conductivity versus temperature in silicon journal August 1993
Photothermal displacement spectroscopy: An optical probe for solids and surfaces journal November 1983
Thermo‐optical spectroscopy: Detection by the ’’mirage effect’’ journal January 1980
New photothermal deflection method for thermal diffusivity measurement of semiconductor wafers journal March 1997
Photothermal deflection measurement on heat transport in GaAs epitaxial layers journal October 2003
Photoacoustic measurements of thermal diffusivity description of the ’’drum effect’’ journal January 1982
Photoacoustic measurement of the thermal properties of two-layer systems journal September 1990
Detection of thermal waves through optical reflectance journal June 1985
Broadband phonon mean free path contributions to thermal conductivity measured using frequency domain thermoreflectance journal March 2013
A frequency-domain thermoreflectance method for the characterization of thermal properties journal September 2009
Simultaneous measurement of in-plane and through-plane thermal conductivity using beam-offset frequency domain thermoreflectance journal January 2017
A new measurement approach for interface thermal resistance using frequency-scan photothermal reflectance technique journal July 2017
The study of frequency-scan photothermal reflectance technique for thermal diffusivity measurement journal May 2015
Parametric study of the frequency-domain thermoreflectance technique journal November 2012
Thermal conductivity imaging at micrometre-scale resolution for combinatorial studies of materials journal April 2004
Analysis of heat flow in layered structures for time-domain thermoreflectance journal December 2004
Transient thermoreflectance from thin metal films journal July 1986
Measurement of thermal transport using time-resolved thermal wave microscopy journal October 2011
Effective thermal diffusivity of layered materials measured by modulated photothermal techniques journal September 1998
Complete thermal characterization of film-on-substrate system by modulated thermoreflectance microscopy and multiparameter fitting journal November 1999
Time resolved imaging of carrier and thermal transport in silicon journal January 2010
Photothermal experiments in the time and frequency domains using an optical near field microscope journal March 2004
Spatially localized measurement of thermal conductivity using a hybrid photothermal technique journal May 2012
Effect of ion irradiation on the thermal conductivity of UO2 and U3O8 epitaxial layers journal November 2013
Thermal conductivity measurements via time-domain thermoreflectance for the characterization of radiation induced damage journal May 2015
Investigation of thermal transport in composites and ion beam irradiated materials for nuclear energy applications journal December 2016
Microstructure changes and thermal conductivity reduction in UO2 following 3.9 MeV He2+ ion irradiation journal November 2014
Implementation of a multilayer model for measurement of thermal conductivity in ion beam irradiated samples using a modulated thermoreflectance approach journal October 2018
Local measurement of thermal conductivity and diffusivity journal December 2015
Measurement of Gaussian laser beam radius using the knife-edge technique: improvement on data analysis journal January 2009
Fabrication and thermophysical property characterization of UN/U3Si2 composite fuel forms journal November 2017
Pulse accumulation, radial heat conduction, and anisotropic thermal conductivity in pump-probe transient thermoreflectance journal November 2008
Thermal wave propagation in thin films on substrates journal November 1995
Thermal and transport properties of U3Si2 journal September 2018