Long-term ceramic matrix composite for aeroengine
作者机构:Science and Technology on Thermostructure Composite Materials LaboratoryNorthwestern Polytechnical UniversityXi’an 710072China
出 版 物:《Journal of Advanced Ceramics》 (先进陶瓷(英文))
年 卷 期:2022年第11卷第9期
页 面:1343-1374页
核心收录:
学科分类:08[工学] 082502[工学-航空宇航推进理论与工程] 0805[工学-材料科学与工程(可授工学、理学学位)] 0825[工学-航空宇航科学与技术]
基 金:This work was supported by the National Natural Science Foundation of China(Grant Nos.92060202,51632007,51872229,and 51521061) the 111 Project of China(Grant No.B08040) National Science and Technology Major Project(Grant No.2017-VI-0007-0077).
主 题:high degree of densification matrix cracking stress self-healing duration silicon carbide ceramic matrix composite(CMC-SiC)
摘 要:Three strategies were proposed to prolong the service life of continuous fiber-reinforced silicon carbide ceramic matrix composite(CMC-SiC),which served as thermal-structure components of aeroengine at thermo-mechanical-oxygenic coupling environment.As for some thermal-structure components with low working stress,improving the degree of densification was crucial to prolong the service life,and the related process approaches were recited.If the thermal-structure components worked under moderate stress,the matrix cracking stress(σ^(mc))should be improved as far as possible.The fiber preform architecture,interface shear strength,residual thermal stress,and matrix strengthening were associated withσ_(mc)in this review.Introducing self-healing components was quite significant with the appearance of matrix microcracks when CMC-SiC worked at more severe environment for hundreds of hours.The damage can be sealed by glass phase originating from the reaction between self-healing components and oxygen.The effective self-healing temperature range of different self-healing components was first summarized and distinguished.The structure,composition,and preparation process of CMC-SiC should be systematically designed and optimized to achieve long duration target.