首页|真空抽滤结合反应熔渗法制备ZrB2-ZrC-SiC改性炭/炭复合材料的力学性能与烧蚀行为

真空抽滤结合反应熔渗法制备ZrB2-ZrC-SiC改性炭/炭复合材料的力学性能与烧蚀行为

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  • 国家科技期刊平台
  • NETL
  • NSTL
  • 万方数据
先进飞行器的研发依赖于高性能热结构材料,超高温陶瓷改性的炭/炭复合材料是一种理想的候选材料.然而,传统的制备方法要么效率低、成本高,要么陶瓷在基体中不均匀分布.与传统的反应熔渗ZrSi2工艺制备的C/C-ZrC-SiC复合材料相比,通过真空过滤ZrB2并结合反应熔渗制备的C/C-ZrB2-ZrC-SiC复合材料具有陶瓷相含量高且分布均匀的优点.与C/C-ZrC-SiC复合材料相比,C/C-ZrB2-ZrC-SiC复合材料的质量和线性烧蚀率分别降低了 68.9％和29.7％.烧蚀性能得到改善的原因在于B2O3的挥发带走了部分热量,而且ZrO2的分布更加均匀,有助于形成连续的ZrO2-SiO2保护层,从而阻碍氧气渗入,降低烧蚀程度.
Ablation behaviour and mechanical performance of ZrB2-ZrC-SiC modified carbon/carbon composites prepared by vacuum infiltration combined with reactive melt infiltration
The development of advanced aircraft relies on high performance thermal-structural materials,and carbon/carbon com-posites(C/C)composited with ultrahigh-temperature ceramics are ideal candidates.However,the traditional routes of compositing are either inefficient and expensive or lead to a non-uniform distribution of ceramics in the matrix.Compared with the traditional C/C-ZrC-SiC composites prepared by the reactive melt infiltration of ZrSi2,C/C-ZrB2-ZrC-SiC composites prepared by the vacuum infiltration of ZrB2 combined with reactive melt infiltration have the higher content and more uniform distribution of the introduced ceramic phases.The mass and linear ablation rates of the C/C-ZrB2-ZrC-SiC composites were respectively 68.9％and 29.7％lower than those of C/C-ZrC-SiC composites prepared by reactive melt infiltration.The ablation performance was improved because the volatilization of B2O3,removes some of the heat,and the more uniformly distributed ZrO2,that helps produce a ZrO2-SiO2 continu-ous protective layer,hinders oxygen infiltration and decreases ablation.

C/C compositesZrB2-ZrC-SiCVacuum filtrationReactive melt infiltrationAblation

张佳平、苏晓宣、李鑫港、王润宁、付前刚

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西北工业大学陕西省纤维增强轻质复合材料重点实验室,陕西西安 710072

炭/炭复合材料 ZrB2-ZrC-SiC 真空抽滤 反应熔渗 烧蚀

国家自然科学基金国家自然科学基金航空发动机及燃气轮机基础科学中心项目新型陶瓷纤维及其复合材料重点实验室基金河南省科技研发计划联合基金国家科技重大专项基础研究项目基础研究项目

5227204452002321P2021-A-IV-003-0016142907220302225200810002J2022-VI0011-0042JCKY2021607B035

2024

10.1016/S1872-5805(24)60841-3

新型炭材料
中国科学院山西煤炭化学研究所

新型炭材料

CSTPCD北大核心
影响因子：0.685
ISSN：1007-8827
年,卷(期)：2024.39(4)