摘要
Based on systematic studies,Si C ceramic matrix composites(CMC-Si C,mainly including C/Si C,Si C/Si C and their self-healing modified composites)have been successfully used as moderate temperature and moderate loading parts in aero-engines,thermal protective systems and aerospace structures[1–4].To fulfill the application requirements of CMCs in even more extreme environments,preparation and characterization of ultrahigh temperature ceramics(UHTCs),UHTCMCs and multifunctional CMCs have been investigated[5-9].
