Research progress on NITE process for fabricating SiC_f/SiC composites

Nano-infiltration and transient eutectic (NITE) process is a new method for fabricating silicon carbide fiber reinforced silicon carbide based (SiCf/SiC) composites, which has the advantages of short production cycle, simple process and low production cost. The material made by NITE process is with compact matrix, low porosity, and free of residual silicon, therefore, it is suitable for high temperature and long service environments at 1400℃ and above. At present, Japan, the United States and other countries have carried out in-depth research on this technology based on the mature third-generation silicon carbide fiber, and applied the composites in fields such as nuclear energy industrial heat exchangers and aero-engine combustor liners. In this paper, the basic concepts, the manufacturing process, the mechanical properties of SiCf/SiC composites and component verification and prospects of NITE process were reviewed, in order to provide the reference to a certain degree for the domestic development of this process.