Ablation behavior of a C/C-ZrC-SiC composite based on high-solid-loading slurry impregnation under oxyacetylene torch
Ablation behavior of a C/C-ZrC-SiC composite based on high-solid-loading slurry impregnation under oxyacetylene torch
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DOI：
10.1016/j.jeurceramsoc.2022.05.030
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发表时间：
2022-06-07
影响因子：
5.7
通讯作者：
Peng, Ke
中科院分区：
文献类型：
--
作者：
Tang, Zhenxiao;Yi, Maozhong;Peng, Ke
采用高固含量浆料浸渍与聚合物浸渍和热解相结合的方法，成功制备了C/C-ZrC-SiC复合材料。研究了C/C-ZrC-SiC复合材料的显微组织和烧蚀行为。得到的C/C-ZRC-SiC复合材料的密度高达2.74g/cm(3)。在热流密度为3.86 mW/m(2)的氧乙炔火焰中对120 S作用后，复合材料的质量烧蚀率和线烧蚀率分别为0.72+/-0.11 mg/S和0.52+/-0.09mum/S。复合材料优异的烧蚀性能归功于由三层氧化膜组成的氧化膜对基体的保护作用。
A C/C-ZrC-SiC composite was successfully prepared by high-solid-loading slurry impregnation combined with polymer infiltration and pyrolysis. The microstructure and ablation behavior of the C/C-ZrC-SiC composite were investigated. ZrC particles were uniformly distributed in the matrix, and the obtained C/C-ZrC-SiC composite had a high density of 2.74 g/cm(3). After exposure to oxyacetylene flame with a heat flux of 3.86 MW/m(2) for 120 s, the mass and linear ablation rates of the composite were 0.72 +/- 0.11 mg/s and 0.52 +/- 0.09 mu m/s, respectively. The excellent ablation properties of the composite were attributed to the protection of the matrix by a three layered oxide scale consisting of ZrO2/SiO2-rich/ZrO2-SiO2.