Imperial College London
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ProfessorRobinGrimes

Faculty of Engineering, Department of Materials

BCH Steele Chair in Energy Materials
 
 
 
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Contact

 

+44 (0)20 7594 6730r.grimes

 
 
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Location

 

B303cBessemer BuildingSouth Kensington Campus

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Summary

 

Publications

Citation

BibTex format

@article{Pavlov:2020:10.1016/j.jnucmat.2020.152176,
author = {Pavlov, T and lestak and Wenman, M and Vlahovic and Robba and Cambriani and Staicu and Dahms and Ernstberger and Brown and Bradford, M and Konings, R and Grimes, R},
doi = {10.1016/j.jnucmat.2020.152176},
journal = {Journal of Nuclear Materials},
pages = {1--11},
title = {Examining the thermal properties of unirradiated nuclear grade graphite between 750 and 2500 K},
url = {http://dx.doi.org/10.1016/j.jnucmat.2020.152176},
volume = {538},
year = {2020}
}
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RIS format (EndNote, RefMan)

TY  - JOUR
AB  - This study presents the first high temperature measurements (between 750K and 2500K) of thermal conductivity, thermal diffusivity, specific heat and spectral emissivity of virgin graphite samples (type IM1-24) from advanced gas-cooled reactor (AGR) fuel assembly bricks. Scanning electron microscope (SEM) and X-ray computed tomography (XRT) techniques were used to verify the presence of Gilsocarbon filler particles (a characteristic microstructural feature of IM1-24 graphite). All thermal properties were investigated in two orthogonal directions, which showed the effective macroscopic thermal conductivity to be the same (to within experimental error). This can be linked to the morphology of the filler particles that consist of concentrically aligned graphitic platelets. The resulting spherical symmetry allows for heat to flow in the same manner in both macroscopic directions. The current thermal conductivity results were compared to other isotropic grade graphite materials. The significant discrepancies between the thermal conductivities of the individual grades are likely the result of different manufacturing processes yielding variations in the microstructure of the final product. Differences were identified in the filler particle size and structure, and possibly the degree of graphitization compared to other reported nuclear graphites.
AU  - Pavlov,T
AU  - lestak
AU  - Wenman,M
AU  - Vlahovic
AU  - Robba
AU  - Cambriani
AU  - Staicu
AU  - Dahms
AU  - Ernstberger
AU  - Brown
AU  - Bradford,M
AU  - Konings,R
AU  - Grimes,R
DO  - 10.1016/j.jnucmat.2020.152176
EP  - 11
PY  - 2020///
SN  - 0022-3115
SP  - 1
TI  - Examining the thermal properties of unirradiated nuclear grade graphite between 750 and 2500 K
T2  - Journal of Nuclear Materials
UR  - http://dx.doi.org/10.1016/j.jnucmat.2020.152176
UR  - https://www.sciencedirect.com/science/article/pii/S0022311519315375?via%3Dihub
UR  - http://hdl.handle.net/10044/1/79436
VL  - 538
ER  -
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