Proprietes electroniques et magnetiques de fibres de carbone evolution sous irradiation neutronique |
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Authors: | J. RappeneauG. Micaud A. Drouet |
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Affiliation: | Section de Physique de Materiaux Nucleaires CEA-CEN SaclayFrance; Centre de Recherches Paul Pascal, Domaine Universitaire 33-Talance, France |
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Abstract: | Techniques developed for the measurement of the electrical resistivity and the diamagnetic anisotropy of carbon fibres, in the temperature range 77–300°K are described. Two types of fibres were studied: the Rigilor AC fibres treated at 1100°C and the Rigilor AG fibres treated at 2500°C. The measurements of electrical resistivity performed on single fibres show the presence of some correlation between this property and the cross-sectional area of the fibre. Measurements of diamagnetic susceptibility carried out on bundles of fibres demonstrate a large anisotropy of the fibres. The influence of small neutron irradiation doses on these properties has been studied at room temperature. |
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