(1. State Key Laboratory of High Performance Ceramics and Superfine Microstructure, Shanghai Institute of Ceramics, Chinese Academy of Sciences, Shanghai 200050, China) (2. Structural Ceramics and Composites Engineering Research Center, Shanghai Institute of Ceramics, Chinese Academy of Sciences, Shanghai 200050, China)
Ultra-high temperature ceramics (UHTCs) have received great attention due to their application potentials in the thermal protection system of hypersonic vehicles. The major problems that restrict the wide application of UHTCs are high brittleness and difficulty to be sintered. Introduction of carbon fiber into UHTCs to obtain fiber reinforced UHTCs (Cf/UHTCs) is an effective solution to these problems. In the past 10 years, our country has made major breakthroughs in the engineering application of Cf/UHTCs and obtained a series of worldclass achievements. However, because of the complicated preparation process and harsh service environment (>2000 ℃, >5 Ma airflow scouring), Cf/UHTCs still exist several critical scientific issues need to be clarified, especially in terms of structural evolution and performance mechanisms. reviews The research progress on matrix modification, oxidation-ablation mechanism and high-temperature mechanical properties of Cf/UHTCs was reviewed. Also, the future research trends of Cf/UHTCs based on the recent research results of our group were summarized and prospected. This paper provides a reference for further research and development of Cf/UHTCs.