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Title: Mechanical Characteristics of SiC Coating Layer in TRISO Fuel Particles

Abstract

Tristructural isotropic (TRISO) particles are considered as advanced fuel forms for a variety of fission platforms. While these fuel structures have been tested and deployed in reactors, the mechanical properties of these structures as a function of production parameters need to be investigated in order to ensure their reliability during service. Nanoindentation techniques, indentation crack testing, and half sphere crush testing were utilized in order to evaluate the integrity of the SiC coating layer that is meant to prevent fission product release in the coated particle fuel form. The results are complimented by scanning electron microscopy (SEM) of the grain structure that is subject to change as a function of processing parameters and can alter the mechanical properties such as hardness, elastic modulus, fracture toughness and fracture strength. Through utilization of these advanced techniques, subtle differences in mechanical properties that can be important for in-pile fuel performance can be distinguished and optimized in iteration with processing science of coated fuel particle production.

Authors:
; ; ; ; ; ; ; ;
Publication Date:
Research Org.:
Idaho National Lab. (INL), Idaho Falls, ID (United States)
Sponsoring Org.:
USDOE
OSTI Identifier:
1116757
Report Number(s):
INL/JOU-13-30920
Journal ID: ISSN 0022-3115
DOE Contract Number:  
DE-AC07-05ID14517
Resource Type:
Journal Article
Journal Name:
Journal of Nuclear Materials
Additional Journal Information:
Journal Volume: 442; Journal Issue: 1 - 3; Journal ID: ISSN 0022-3115
Country of Publication:
United States
Language:
English
Subject:
99 GENERAL AND MISCELLANEOUS; SiC Coating; TRISO Fuel

Citation Formats

Hosemann, P., Martos, J. N., Frazer, D., Vasudevamurthy, G., Byun, T. S., Hunn, J. D., Jolly, B. C., Terrani, K., and Okuniewski, M. Mechanical Characteristics of SiC Coating Layer in TRISO Fuel Particles. United States: N. p., 2013. Web. doi:10.1016/j.jnucmat.2013.08.041.
Hosemann, P., Martos, J. N., Frazer, D., Vasudevamurthy, G., Byun, T. S., Hunn, J. D., Jolly, B. C., Terrani, K., & Okuniewski, M. Mechanical Characteristics of SiC Coating Layer in TRISO Fuel Particles. United States. https://doi.org/10.1016/j.jnucmat.2013.08.041
Hosemann, P., Martos, J. N., Frazer, D., Vasudevamurthy, G., Byun, T. S., Hunn, J. D., Jolly, B. C., Terrani, K., and Okuniewski, M. 2013. "Mechanical Characteristics of SiC Coating Layer in TRISO Fuel Particles". United States. https://doi.org/10.1016/j.jnucmat.2013.08.041.
@article{osti_1116757,
title = {Mechanical Characteristics of SiC Coating Layer in TRISO Fuel Particles},
author = {Hosemann, P. and Martos, J. N. and Frazer, D. and Vasudevamurthy, G. and Byun, T. S. and Hunn, J. D. and Jolly, B. C. and Terrani, K. and Okuniewski, M.},
abstractNote = {Tristructural isotropic (TRISO) particles are considered as advanced fuel forms for a variety of fission platforms. While these fuel structures have been tested and deployed in reactors, the mechanical properties of these structures as a function of production parameters need to be investigated in order to ensure their reliability during service. Nanoindentation techniques, indentation crack testing, and half sphere crush testing were utilized in order to evaluate the integrity of the SiC coating layer that is meant to prevent fission product release in the coated particle fuel form. The results are complimented by scanning electron microscopy (SEM) of the grain structure that is subject to change as a function of processing parameters and can alter the mechanical properties such as hardness, elastic modulus, fracture toughness and fracture strength. Through utilization of these advanced techniques, subtle differences in mechanical properties that can be important for in-pile fuel performance can be distinguished and optimized in iteration with processing science of coated fuel particle production.},
doi = {10.1016/j.jnucmat.2013.08.041},
url = {https://www.osti.gov/biblio/1116757}, journal = {Journal of Nuclear Materials},
issn = {0022-3115},
number = 1 - 3,
volume = 442,
place = {United States},
year = {Fri Nov 01 00:00:00 EDT 2013},
month = {Fri Nov 01 00:00:00 EDT 2013}
}