Thermophysical property and pore structure evolution in stressed and non-stressed neutron irradiated IG-110 nuclear graphite
Abstract
The nuclear graphite, IG-110, was irradiated with and without a compressive load of 5 MPa at ~400 C up to 9.3x1025 n/m2 (E>0.1 MeV.) Following irradiation physical properties were studied to compare the effect of graphite irradiation on microstructure developed under compression and in stress-free condition. Properties included: dimensional change, thermal conductivity, dynamic modulus, and CTE. The effect of stress on open internal porosity was determined through nitrogen adsorption. The IG-110 graphite experienced irradiation-induced creep that is differentiated from irradiation-induced swelling. Irradiation under stress resulted in somewhat greater thermal conductivity and coefficient of thermal expansion. While a significant increase in dynamic modulus occurs, no differentiation between materials irradiated with and without compressive stress was observed. Nitrogen adsorption analysis suggests a difference in pore evolution in the 0.3-40 nm range for graphite irradiated with and without stress, but this evolution is seen to be a small contributor to the overall dimensional change.
- Authors:
-
- Massachusetts Inst. of Technology (MIT), Cambridge, MA (United States)
- Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
- Pacific Northwest National Lab. (PNNL), Richland, WA (United States)
- Publication Date:
- Research Org.:
- Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States). High Flux Isotope Reactor (HFIR)
- Sponsoring Org.:
- USDOE Office of Nuclear Energy (NE); USDOE Office of Science (SC), Fusion Energy Sciences (FES)
- OSTI Identifier:
- 1302939
- Alternate Identifier(s):
- OSTI ID: 1359418
- Grant/Contract Number:
- AC05-00OR22725
- Resource Type:
- Accepted Manuscript
- Journal Name:
- Journal of Nuclear Materials
- Additional Journal Information:
- Journal Volume: 476; Journal Issue: C; Journal ID: ISSN 0022-3115
- Publisher:
- Elsevier
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 36 MATERIALS SCIENCE; 22 GENERAL STUDIES OF NUCLEAR REACTORS; neutron irradiation; graphite; creep
Citation Formats
Snead, Lance L., Contescu, C. I., Byun, T. S., and Porter, W. Thermophysical property and pore structure evolution in stressed and non-stressed neutron irradiated IG-110 nuclear graphite. United States: N. p., 2016.
Web. doi:10.1016/j.jnucmat.2016.04.042.
Snead, Lance L., Contescu, C. I., Byun, T. S., & Porter, W. Thermophysical property and pore structure evolution in stressed and non-stressed neutron irradiated IG-110 nuclear graphite. United States. https://doi.org/10.1016/j.jnucmat.2016.04.042
Snead, Lance L., Contescu, C. I., Byun, T. S., and Porter, W. Sat .
"Thermophysical property and pore structure evolution in stressed and non-stressed neutron irradiated IG-110 nuclear graphite". United States. https://doi.org/10.1016/j.jnucmat.2016.04.042. https://www.osti.gov/servlets/purl/1302939.
@article{osti_1302939,
title = {Thermophysical property and pore structure evolution in stressed and non-stressed neutron irradiated IG-110 nuclear graphite},
author = {Snead, Lance L. and Contescu, C. I. and Byun, T. S. and Porter, W.},
abstractNote = {The nuclear graphite, IG-110, was irradiated with and without a compressive load of 5 MPa at ~400 C up to 9.3x1025 n/m2 (E>0.1 MeV.) Following irradiation physical properties were studied to compare the effect of graphite irradiation on microstructure developed under compression and in stress-free condition. Properties included: dimensional change, thermal conductivity, dynamic modulus, and CTE. The effect of stress on open internal porosity was determined through nitrogen adsorption. The IG-110 graphite experienced irradiation-induced creep that is differentiated from irradiation-induced swelling. Irradiation under stress resulted in somewhat greater thermal conductivity and coefficient of thermal expansion. While a significant increase in dynamic modulus occurs, no differentiation between materials irradiated with and without compressive stress was observed. Nitrogen adsorption analysis suggests a difference in pore evolution in the 0.3-40 nm range for graphite irradiated with and without stress, but this evolution is seen to be a small contributor to the overall dimensional change.},
doi = {10.1016/j.jnucmat.2016.04.042},
journal = {Journal of Nuclear Materials},
number = C,
volume = 476,
place = {United States},
year = {Sat Apr 23 00:00:00 EDT 2016},
month = {Sat Apr 23 00:00:00 EDT 2016}
}
Web of Science
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Works referencing / citing this record:
Pore structure evolution of IG-110 graphite during argon ion irradiation at 600 °C
journal, January 2019
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