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Abstract

In this study, we performed irradiation experiments on a-SiC samples, with heavy ions at room temperature (74 MeV Kr, fluence of 5 × 10{14} ions cm{-2}). This energy results in an irradiated layer of about 9.6 mu m for SiC. TEM and Raman analyses reveal a graded damaged material. In the electronic interactions domain SiC is weakly damaged whereas it becomes fully amorphous in the nuclear interactions domain. According to the structural examinations, the irradiated SiC is considered as a multilayered material. Thermal conductivity in both electronic and nuclear interactions domains is measured as a function of temperature and annealing temperature. It appears that such an approach is reliable to estimate thermal conductivity of ceramics under neutron irradiation.

Additional information

Authors: CABRERO J, LCTS, University of Bordeaux, Pessac (FR);PAILLER R, LCTS, University of Bordeaux, Pessac (FR);WEISBECKER P, LCTS, University of Bordeaux, Pessac (FR);AUDUBERT F, Département de Recherches sur la Fusion Contrôlée, Association Euratom-CEA sur la Fusion, CEA Cadarache, Saint-Paul-lez-Durance (FR);KUSIAK A, Laboratory Transferts Ecoulements Fluides Energétique, University of Bordeaux, Talence (FR);BATTAGLIA J L, Laboratory Transferts Ecoulements Fluides Energétique, University of Bordeaux, Talence (FR)
Bibliographic Reference: An article published in: Journal of Nuclear Materials, Volume 396, Issues 2-3, January 2010, Pages 202-207
Availability: This article can be accessed online by subscribers, and can be ordered online by non-subscribers, at: http://dx.doi.org/10.1016/j.jnucmat.2009.11.006
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