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Title: Property changes of G347A graphite due to neutron irradiation

Abstract

A new, fine-grain nuclear graphite, grade G347A from Tokai Carbon Co., Ltd., has been irradiated in the High Flux Isotope Reactor at Oak Ridge National Laboratory to study the materials property changes that occur when exposed to neutron irradiation at temperatures of interest for Generation-IV nuclear reactor applications. Specimen temperatures ranged from 290°C to 800 °C with a maximum neutron fluence of 40 × 10 25 n/m 2 [E > 0.1 MeV] (~30dpa). Lastly, observed behaviors include: anisotropic behavior of dimensional change in an isotropic graphite, Young's modulus showing parabolic fluence dependence, electrical resistivity increasing at low fluence and additional increase at high fluence, thermal conductivity rapidly decreasing at low fluence followed by continued degradation, and a similar plateau value of the mean coefficient of thermal expansion for all irradiation temperatures.

Authors:
 [1];  [1];  [1];  [2]
  1. Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
  2. Tokai Carbon Co. Ltd. (Japan)
Publication Date:
Research Org.:
Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States). High Flux Isotope Reactor (HFIR)
Sponsoring Org.:
USDOE Office of Science (SC), Basic Energy Sciences (BES) (SC-22); Work for Others (WFO)
OSTI Identifier:
1334427
Alternate Identifier(s):
OSTI ID: 1396832
Grant/Contract Number:
AC05-00OR22725; NFE-09-02345
Resource Type:
Journal Article: Accepted Manuscript
Journal Name:
Carbon
Additional Journal Information:
Journal Volume: 109; Journal Issue: C; Journal ID: ISSN 0008-6223
Publisher:
Elsevier
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE

Citation Formats

Campbell, Anne A., Katoh, Yutai, Snead, Mary A., and Takizawa, Kentaro. Property changes of G347A graphite due to neutron irradiation. United States: N. p., 2016. Web. doi:10.1016/j.carbon.2016.08.042.
Campbell, Anne A., Katoh, Yutai, Snead, Mary A., & Takizawa, Kentaro. Property changes of G347A graphite due to neutron irradiation. United States. doi:10.1016/j.carbon.2016.08.042.
Campbell, Anne A., Katoh, Yutai, Snead, Mary A., and Takizawa, Kentaro. Thu . "Property changes of G347A graphite due to neutron irradiation". United States. doi:10.1016/j.carbon.2016.08.042. https://www.osti.gov/servlets/purl/1334427.
@article{osti_1334427,
title = {Property changes of G347A graphite due to neutron irradiation},
author = {Campbell, Anne A. and Katoh, Yutai and Snead, Mary A. and Takizawa, Kentaro},
abstractNote = {A new, fine-grain nuclear graphite, grade G347A from Tokai Carbon Co., Ltd., has been irradiated in the High Flux Isotope Reactor at Oak Ridge National Laboratory to study the materials property changes that occur when exposed to neutron irradiation at temperatures of interest for Generation-IV nuclear reactor applications. Specimen temperatures ranged from 290°C to 800 °C with a maximum neutron fluence of 40 × 1025 n/m2 [E > 0.1 MeV] (~30dpa). Lastly, observed behaviors include: anisotropic behavior of dimensional change in an isotropic graphite, Young's modulus showing parabolic fluence dependence, electrical resistivity increasing at low fluence and additional increase at high fluence, thermal conductivity rapidly decreasing at low fluence followed by continued degradation, and a similar plateau value of the mean coefficient of thermal expansion for all irradiation temperatures.},
doi = {10.1016/j.carbon.2016.08.042},
journal = {Carbon},
number = C,
volume = 109,
place = {United States},
year = {Thu Aug 18 00:00:00 EDT 2016},
month = {Thu Aug 18 00:00:00 EDT 2016}
}

Journal Article:
Free Publicly Available Full Text
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Cited by: 4works
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