Preparation of carbon/carbon‐ultra high temperature ceramics composites with ultra high temperature ceramics coating |
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| Authors: | Lin Xu Jia Cheng Xingchao Li Yin Zhang Zhen Fan Yongzhong Song Zhihai Feng |
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| Affiliation: | 1. Science and Technology of Advanced Functional Composite Laboratory, Aerospace Research Institute of Materials & Processing Technology, Beijing, China;2. Science and Technology on High Strength Structure Materials Laboratory, Central South University, Changsha, China |
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| Abstract: | In order to increase the oxidation resistance of carbon/carbon (C/C) composites at long‐term high temperature, C/C‐Ultra High Temperature Ceramics composites (UHTCs) with a dual‐layer UHTCs oxidation coating was successfully designed and fabricated. The microstructure and ablation resistance were investigated and discussed. After ablation in arc‐heated wind tunnel with temperature being 2200°C for 1000s, the mass ablation rate and linear ablation rate were ?1.9 × 10?2 mg/cm2s and 2.9 × 10?5 mm/s, respectively. The formation of thermodynamically compatible oxide scale including ZrO2 skeleton and SiO2 or Zr–Si–O glass on the surface were mainly contributed to the excellent ablation resistance of the composite. |
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| Keywords: | carbon‐carbon composites oxidation protective coating ultra‐high temperature ceramics |
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