Property changes of G347A graphite due to neutron irradiation

Campbell, Anne A.; Katoh, Yutai; Snead, Mary A.; Takizawa, Kentaro

doi:10.1016/j.carbon.2016.08.042

Property changes of G347A graphite due to neutron irradiation

Journal Article · Thu Aug 18 04:00:00 EDT 2016 · Carbon

DOI:https://doi.org/10.1016/j.carbon.2016.08.042· OSTI ID:1334427

Campbell, Anne A. ^[1]; Katoh, Yutai ^[1]; Snead, Mary A. ^[1]; Takizawa, Kentaro ^[2]

Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
Tokai Carbon Co. Ltd. (Japan)

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.

Research Organization:: Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States). High Flux Isotope Reactor (HFIR)

Sponsoring Organization:: USDOE Office of Science (SC), Basic Energy Sciences (BES) (SC-22); ORNL work for others

Grant/Contract Number:: AC05-00OR22725

OSTI ID:: 1334427

Alternate ID(s):: OSTI ID: 1396832

Journal Information:: Carbon, Journal Name: Carbon Journal Issue: C Vol. 109; ISSN 0008-6223

Publisher:: ElsevierCopyright Statement

Country of Publication:: United States

Language:: English

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A Review of Finite Element Method Models for Nuclear Graphite Applications Arregui-Mena, José David; Worth, Robert N.; Hall, Graham Archives of Computational Methods in Engineering, Vol. 27, Issue 1 https://doi.org/10.1007/s11831-018-09310-y	journal	December 2018
Super-resolution energy spectra from neutron direct-geometry spectrometers Islam, Fahima; Lin, Jiao Y. Y.; Archibald, Richard Review of Scientific Instruments, Vol. 90, Issue 10 https://doi.org/10.1063/1.5116147	journal	October 2019

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