High thermal conductivity SiC/SiC composites for fusion applications

Influence of irradiation-induced defects on fracture behavior in highly pure SiC

“…While there has been significant developmental work on manufacturing the SiC and SiC/SiC composite, details of the effects that the complex operating conditions have on the properties of SiC are not adequately understood. Silicon carbide and SiC/SiC composites have been extensively studied to explore neutron irradiationinduced changes such as mechanical properties [2,3], amorphization [4], swelling [5], thermal conductivity [6] and microstructural evolution [7], although its irradiation effects are even less clear and not well understood. Especially, fracture behavior of SiC is critical because the brittle nature of SiC-based materials is one of the most limiting factors in design of fusion applications.…”

SiCf/SiC Composite: Attainment Methods, Properties and Characterization

“…The notable difference in the two reactions is the type of phase reactant, a vapor-vapor reaction (Equation 8), in contrast to a solid-vapor reaction (Equation 9). It is known that the reactant S i O a n d C O s h o u l d b e p r o v i d e d f o r t h e production of SiC whiskers, so the formation of SiC whiskers is likely (Yun et al, 2005), according to the equations: (Kowbel, 1997(Kowbel, , 2000 transformed only the carbon fibers into SiC fibers from a carbon cloth through the process of chemical reaction via vapor at high temperatures, which used SiO gas as the reactive gas. The conversion of carbon to SiC was controlled by the gas generation and temperature of operation.…”

Issues and advances in SiCf/SiC composites development for fusion reactors

“…have long been studied and -to some extentindustrialized [20][21][22]. These techniques have demonstrated respective advantages and disadvantages which arise from their processing routes.…”