新型炭材料（中英文）2026，Vol.41Issue(3)：707-720,14.DOI:10.1016/S1872-5805(26)61069-4
双脉冲固体火箭发动机中四向双基体炭/炭复合材料的非连续烧蚀行为
Discontinuous ablation behavior of four-directional dual-matrix C/C composites under dual-pulse solid rocket motors
摘要
Abstract
Four-directional dual-matrix C/C composites were fabricated from PAN-based carbon fibers using a combined approach of soft-hard hybrid weaving pre-form molding,chemical vapor infiltration(CVI)of pyro-lytic carbon(PyC),high pressure impregnation and car-bonization of pitch-derived carbon.The ablation resist-ance of the composites was evaluated by testing in a dual-pulse solid rocket motor,and their ablation behavi-or was investigated.The carbon rods formed by twisting and carbonizing fiber bundles,exhibited a hexagonal cross-section,surrounded by a dense PyC"wall"structure formed during the CVI process.The linear ablation rates of the com-posites after pulse I and pulse Ⅱ were 0.068 mm/s and 0.113 mm/s,respectively.A cellular-like PyC layer and nanowire struc-tures were deposited on the surface of the throat convergent section during the post-combustion cooling phase,while cracks and delamination occurred on and within the divergent section.The ablation of C/C composites under these conditions was a com-plex multi-mechanism process,including ultra-high temperatures,high-speed gas scouring,oxygen-containing thermochemical ablation,and thermal shock.This work elucidates the ablation behaviors of C/C composites under dual-pulse conditions and provides technical guidance and a theoretical basis for designing and fabricating C/C composites for extreme ablation environ-ments.关键词
C/C复合材料/烧蚀/双脉冲固体火箭发动机/微观结构演变/四向双基体Key words
C/C composites/Ablation/Dual-pulse solid rocket motor/Microstructure evolution/Four-directional dual-matrix分类
通用工业技术引用本文复制引用
魏连锋,王润宁,张佳平,李克智,崔红..双脉冲固体火箭发动机中四向双基体炭/炭复合材料的非连续烧蚀行为[J].新型炭材料（中英文）,2026,41(3):707-720,14.基金项目
This work was supported by the National Natur-al Science Foundation of China(52272044,52125203),the fund of the Shaanxi Laboratory of Ad-vanced Materials(2024ZY-JCYJ-04-05)and the In-novation Foundation for Doctor Dissertation of North-western Polytechnical University(CX2025054). 国家自然科学基金(52272044、52125203) （52272044,52125203）
陕西省先进材料重点实验室开放基金(2024ZY-JCYJ-04-05)和西北工业大学博士论文创新基金(CX2025054). （2024ZY-JCYJ-04-05）
