Ablation Behavior of the SiC-Coated Three-Dimensional Highly Thermal Conductive Mesophase-Pitch-Based Carbon-Fiber-Reinforced Carbon Matrix Composite under Plasma Flame.

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ID: 21185
2019
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Ranked #140 of 812 articles by views in Materials (Basel, Switzerland)

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Abstract
This study is focused on a novel high-thermal-conductive C/C composite used in heat-redistribution thermal protection systems. The 3D mesophase pitch-based carbon fiber (CF) preform was prepared using CF in the X (Y) direction and polyacrylonitrile carbon fiber (CF) in the Z direction. After the preform was densified by chemical vapor infiltration (CVI) and polymer infiltration and pyrolysis (PIP), the 3D high-thermal-conductive C/C (C/C) composite was obtained. The prepared C/C composite has higher thermal conduction in the X and Y directions. After an ablation test, the CF becomes needle-shaped, while the CF shows a wedge shape. The fiber/matrix and matrix/matrix interfaces are preferentially oxidized and damaged during ablation. After being coated by SiC coating, the thermal conductivity plays a significant role in decreasing the hot-side temperature and protecting the SiC coating from erosion by flame. The SiC-coated C/C composite has better ablation resistance than the SiC-coated C/C composite. The mass ablation rate of the sample is 0.19 mg·(cm·s), and the linear ablation rate is 0.52 μm·s.
Reference Key
ye2019ablationmaterials Use this key to autocite in the manuscript while using SciMatic Manuscript Manager or Thesis Manager
Authors Ye, Chong;Huang, Dong;Li, Baoliu;Yang, Pingjun;Liu, Jinshui;Wu, Huang;Yang, Jianxiao;Li, Xuanke;
Journal Materials (Basel, Switzerland)
Year 2019
DOI
E2723
URL
Keywords
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