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Title: Irradiation stability and thermo-mechanical properties of NITE-SiC irradiated to 10 dpa

In this study, five variants of nano-infiltration transient eutectic (NITE) SiC were prepared using nanopowder feedstock and sintering additive contents of <10 wt%. The dense monolithic materials were subsequently irradiated to 2 and 10 dpa in a mixed spectrum fission reactor at nominally 400 and 700°C. The evolution in swelling, strength, and thermal conductivity of these materials were examined after irradiation, where in all cases properties saturated at < 2dpa, without appreciable change for further irradiation to 10 dpa. Swelling behavior appeared similar to high-purity chemical vapor deposition (CVD) SiC within measurement uncertainty. The strength roughly doubled after irradiation. Finally, thermal resistivity increase as a result of irradiation was ~20% higher when compared to CVD-SiC.
Authors:
 [1] ;  [1] ;  [1] ; ORCiD logo [1]
  1. Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
Publication Date:
Grant/Contract Number:
AC05-00OR22725
Type:
Accepted Manuscript
Journal Name:
Journal of Nuclear Materials
Additional Journal Information:
Journal Volume: 499; Journal Issue: C; Journal ID: ISSN 0022-3115
Publisher:
Elsevier
Research Org:
Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
Sponsoring Org:
USDOE Office of Nuclear Energy (NE), Fuel Cycle Technologies (NE-5)
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; 73 NUCLEAR PHYSICS AND RADIATION PHYSICS
OSTI Identifier:
1415203

Terrani, Kurt A., Ang, Caen, Snead, Lance L., and Katoh, Yutai. Irradiation stability and thermo-mechanical properties of NITE-SiC irradiated to 10 dpa. United States: N. p., Web. doi:10.1016/j.jnucmat.2017.11.040.
Terrani, Kurt A., Ang, Caen, Snead, Lance L., & Katoh, Yutai. Irradiation stability and thermo-mechanical properties of NITE-SiC irradiated to 10 dpa. United States. doi:10.1016/j.jnucmat.2017.11.040.
Terrani, Kurt A., Ang, Caen, Snead, Lance L., and Katoh, Yutai. 2017. "Irradiation stability and thermo-mechanical properties of NITE-SiC irradiated to 10 dpa". United States. doi:10.1016/j.jnucmat.2017.11.040. https://www.osti.gov/servlets/purl/1415203.
@article{osti_1415203,
title = {Irradiation stability and thermo-mechanical properties of NITE-SiC irradiated to 10 dpa},
author = {Terrani, Kurt A. and Ang, Caen and Snead, Lance L. and Katoh, Yutai},
abstractNote = {In this study, five variants of nano-infiltration transient eutectic (NITE) SiC were prepared using nanopowder feedstock and sintering additive contents of <10 wt%. The dense monolithic materials were subsequently irradiated to 2 and 10 dpa in a mixed spectrum fission reactor at nominally 400 and 700°C. The evolution in swelling, strength, and thermal conductivity of these materials were examined after irradiation, where in all cases properties saturated at < 2dpa, without appreciable change for further irradiation to 10 dpa. Swelling behavior appeared similar to high-purity chemical vapor deposition (CVD) SiC within measurement uncertainty. The strength roughly doubled after irradiation. Finally, thermal resistivity increase as a result of irradiation was ~20% higher when compared to CVD-SiC.},
doi = {10.1016/j.jnucmat.2017.11.040},
journal = {Journal of Nuclear Materials},
number = C,
volume = 499,
place = {United States},
year = {2017},
month = {11}
}