@article{Lyu2026, 
author = {Yang Lyu and Fei Li and Chunlin Wang and Yuhao Fang and Wenzheng Zhang and Mingyi Tan and Ping Hu and Yuan Cheng and Wenbo Han and Xinghong Zhang},
title = {Efficient fabrication of light C/C-SiHfCB composites with excellent thermal shock resistance and high temperature ablation resistance above 2000℃},
year = {2026},
journal = {Extreme Materials},
volume = {2},
number = {2},
keywords = {C/C composites, Ultra-high temperature ceramics precursor, Thermal shock resistance, Ablation resistance},
url = {https://www.sciopen.com/article/10.1016/j.exm.2026.100029},
doi = {10.1016/j.exm.2026.100029},
abstract = {To meet the stringent demands for toughening and ablation resistance in high-speed aircraft components, C/C-SiHfCB composites were fabricated by introducing a novel liquid SiHfCB precursor into a porous C/C matrix via high-pressure precursor infiltration and pyrolysis. This approach yielded an integrated three-dimensional continuous ceramic phase tightly bonded to the matrix. The composite achieved a flexural strength of 237 ± 42 MPa with non-brittle fracture, a critical thermal shock temperature difference of 912℃. During oxyacetylene flame tests, extremely low linear ablation rates of 5.7 × 10−4 mm/s and 15.6 × 10−4 mm/s were recorded at 2000℃ and 2150℃, respectively. An effective oxygen diffusion barrier consisting of an HfO2 skeleton with SiO2-filled pores was formed. This study offers a viable strategy for the synergistic optimization of mechanical and ablation properties.}
}