In-situ measurement on physical/electrical properties of amorphous SiC-based fibers during conversion to crystalline fibers by heat-treatment

Abstract

R & D of High performance SiC fibers is an essential issue for SiC/SiC composite fabrication in extreme environments including high-temperatures and neutron irradiation. High performance SiC fibers like Tyranno-SA have been obtained by the conversion process from amorphous SiC to crystalline SiC fibers during heat-treatment. In this study, we focused on the understanding of physical/electrical properties of amorphous SiC-based fibers during the conversion process. In order to measure properties during heat-treatment up to 1800 oC, a specific device, named as MecaSiC, has been developed at CEA-Saclay.