Thermo-physical, -mechanical, and -electrical behaviors of ion-irradiated Tyranno-SA SiC fibers at high temperatures (1473 K)

The macro-properties of ion-irradiated Tyranno-SA SiC fibers have been studied. The fibers were irradiated at the National Large Accelerator of Heavy Ions facility, GANIL (Caen, France), under 95 MeV Xe ions at room temperature. Fibers were irradiated on two sides with two fluence levels to prevent damage gradients within the fibers. The behaviors of the ion-irradiated fibers at high temperatures (i.e., 303–1473 K) were analyzed using the specific tensile test device for a single fiber, referred to as MacaSiC. The thermo-properties regarding deformation, elastic modulus, and electrical conductivity of the ion-irradiated fibers showed specific behaviors with irreversibility, which implied the recovery of defects induced by ion-irradiation.