Abstract

Silicon carbide (SiC) continuous fiber reinforced SiC matrix composites (SiC/SiC) are considered as promising candidates for pressurized water reactor (PWR) due to their small neutron capture cross-section, excellent high temperature strength and irradiation resistance, etc. SPICRI have been working on the R&D of SiC/SiC composites cladding tubes for the last decade. This report will show the recent research in material development, properties and irradiation response of SiC/SiC composites. Several critical issues to be solved for PWR fuel cladding applications, such as mechanical properties, hermeticity, thermal properties and irradiation resistance are discussed here.

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