Perspectives of SiC-Based Ceramic Composites and Their Applications to Fusion Reactors 3.Status and Prospects of SiC-Based Ceramic Composites for Fusion and Advanced Fission Applications

Abstract

The present status and future prospects of silicon carbide (SiC) continuous fiber-reinforced SiC-matrix ceramic composites (SiC⁄SiC composites) is reviewed from the viewpoint of material development for applications to blanket ⁄ first wall structures in fusion power devices and other advanced nuclear systems. Emphases are placed on the directions of neutron-tolerant composite development. A rationalization of thermal conductivity limits for SiC⁄SiC composites is provided. It is concluded that, although today’s state-of-the-art SiC⁄SiC can contribute to ‘attractive’ fusion power, the expected emergence of novel composites shall further justify taking the risk of employing untraditional materials.