Ceramic matrix composites (CMC) are internationally recognized as the next generation of thermal structural materials. CMC material designation standards have been established and modular design methods have been developed. CMC have been widely applied and validated in high-temperature end components in multiple aerospace fields. As ceramic matrix composites transition from laboratory research and development to engineering application and mass production

joining and repair technologies have become key to driving the application of these composites. Given the interconnection between joining and repair technologies

this paper systematically reviews the research progress and development trends in the joining and repair technologies for ceramic matrix composites. For joining technologies

which need to address both chemical and physical compatibility

this review summarizes the research progress on active brazing

metallic diffusion bonding

nano-Infiltration and transient eutectic bonding

reaction infiltration siliconization

and adhesive bonding. For the rapid and effective repair of surface damage in ceramic matrix composites

this review also covers the application progress of self-healing technologies

chemical vapor deposition

slurry coating

and laser cladding. Finally

the development trends of an integrated design approach for joining and repair of ceramic matrix composites are prospected.