Effect of pyrocarbon interphase texture and thickness on tensile damage and fracture in T-700™ carbon fiber–reinforced silicon carbide minicomposites

Haozhi Duan, Zhongwei Zhang*, Longbiao Li*, Weijie Li*

*此作品的通讯作者

科研成果: 期刊稿件文章同行评审

22 引用 (Scopus)

摘要

In this paper, T-700™ carbon fiber–reinforced silicon carbide (C/SiC) minicomposites with pyrocarbon (PyC) interphase with different textural microstructure and thickness were fabricated using the chemical vapor infiltration method. The interface properties (i.e., textural microstructure, thickness, hardness, and modulus) were obtained through multiple testing methods (i.e., Raman spectroscopy, X-ray diffraction, scanning electron microscopy, and nanoindentation tests). Relationships between the deposition temperature and residence time with the texture type (i.e., low, medium, and high texture) were established. Uniaxial tensile experiments were conducted for C/SiC minicomposites with different PyC interphases to characterize the composite's internal damage evolution and fracture. Relationships between the composite's tensile nonlinear damage evolution, fracture strength and strain, PyC interphase texture, and thickness were established. The composite's tensile strength and fracture strain were the highest for the C/SiC minicomposite with medium-high texture PyC interphase. For the C/SiC minicomposite with the same texture interphase, the composite's tensile strength and fracture strain were affected by the coating thickness. The higher the thickness of the coating, the lower the composite's tensile strength and fracture strain.

源语言英语
页(从-至)2171-2181
页数11
期刊Journal of the American Ceramic Society
105
3
DOI
出版状态已出版 - 3月 2022

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引用此

Duan, H., Zhang, Z., Li, L., & Li, W. (2022). Effect of pyrocarbon interphase texture and thickness on tensile damage and fracture in T-700™ carbon fiber–reinforced silicon carbide minicomposites. Journal of the American Ceramic Society, 105(3), 2171-2181. https://doi.org/10.1111/jace.18193