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Acta Aeronautica et Astronautica Sinica ›› 2025, Vol. 46 ›› Issue (6): 531927.doi: 10.7527/S1000-6893.2024.31927

• Material Engineering and Mechanical Manufacturing • Previous Articles    

Research progress of C/C composites resistant to extreme ablation environments

Yaoying ZENG, Running WANG, Jiaqi HOU, Yulei ZHANG, Jiaping ZHANG(), Hejun LI()   

  1. State Key Laboratory of Ultra High Temperature Composite Materials,Northwestern Polytechnical University,Xi’an 710072,China
  • Received:2025-03-03 Revised:2025-03-05 Accepted:2025-03-10 Online:2025-03-14 Published:2025-03-12
  • Contact: Jiaping ZHANG, Hejun LI E-mail:zhangjiaping@nwpu.edu.cn;lihejun@nwpu.edu.cn
  • Supported by:
    National Natural Science Foundation of China(52293370);National Science and Technology Major Project (J2022-Ⅵ-0011-0042)

Abstract:

C/C composites are key thermal structural materials for hot-end components of aerospace vehicles. However, their susceptibility to oxidation and ablation at high temperatures limits their applications in extreme environments. Therefore, it is particularly important to improve the ablation resistance of C/C composites. The research progress of anti-ablation C/C composites at home and abroad in recent years are systematically reviewed, focusing on 3 aspects: matrix modification, coating protection, and matrix-coating integration. In terms of matrix modification, based on the differences in component characteristics, it is divided into single-phase ceramics, multiphase ceramics, multi-component and high-entropy ceramics modified C/C composites, revealing oxygen blocking and anti-ablation mechanisms of oxidation products of ceramics. The coating technology focuses on analyzing the design principles and ablation behaviors of single-layer coatings, multi-layer composite coatings with gradient structure, micro/nano structure toughened coatings, and coatings with embedded structure interface, clarifying the mechanisms of interface matching optimization in alleviating thermal mismatch of coatings and ablation behaviors. Finally, according to the application requirements for extreme ablation environments, the future development directions for C/C composites are proposed, including oxidation and ablation mechanism analysis, optimization of structure and composition of composite materials, functional design of components, and cost-effective fabrication processes.

Key words: C/C composites, ablation resistance, ultra-high temperature ceramics, coating, matrix modification

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