Fabrication process and growth mechanism of novel micro-stack PyC interphase with different textures

Xu Pang, Mengshan Zhang, Wang Hong, Zhongwei Zhang*, Longbiao Li, Aijun Li, Weijie Li*, Yufeng Liu*

*此作品的通讯作者

科研成果: 期刊稿件文章同行评审

7 引用 (Scopus)

摘要

Pyrolytic carbon (PyC) interphase plays a crucial role in the mechanical properties of fiber-reinforced ceramic matrix composites. In this research, a novel micro-stack PyC interphase with different PyC textures was designed and fabricated by changing the deposition parameters during the chemical vapor infiltration process. The growth mechanism of the micro-stack PyC interphase with different texture were also studied by experimental characterizations and kinetic calculations, and the results show that the content ratio of (C2H2 + C2H4) to C6H6 gas intermediate is a key parameter to control the texture types of PyC interphase. Furthermore, the value of orientation angle (OA) value, thickness, and modulus of the micro-stack PyC interphase were further characterized by high resolution TEM (HRTEM), scanning electronic microscopy, and nanoindentation. Finally, the tensile testing of mini-Cf/PyC/SiC composites was conducted, and the results showed that the tensile strength of mini-Cf/PyC/SiC composites with micro-stack PyC interphase is approximately 40% higher than that containing single high texture PyC interphase. The improvements on the tensile strength of Cf/PyC/SiC composites prove the significant advantages of micro-stack PyC interphase.

源语言英语
页(从-至)7400-7410
页数11
期刊Journal of the American Ceramic Society
106
12
DOI
出版状态已出版 - 12月 2023

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Pang, X., Zhang, M., Hong, W., Zhang, Z., Li, L., Li, A., Li, W., & Liu, Y. (2023). Fabrication process and growth mechanism of novel micro-stack PyC interphase with different textures. Journal of the American Ceramic Society, 106(12), 7400-7410. https://doi.org/10.1111/jace.19387