摘要
SiC fibers can significantly improve the properties of SiCf/SiCm ceramic matrix composites which are considered as advanced materials for nuclear system.These materials exhibit interesting features such as a low activation level and a higher operating temperature in comparison to ferritic steels and vanadium alloys[1].Such properties make them promising candidates for use as fuel cladding,structural components or flow channel inserts.However,their performances strongly depend on their complex microstructure which undergoes significant changes when they are irradiated.It is necessary to study the performance of SiC fiber under irradiation.