Microstructure, thermophysical, and ablative performances of a 3D needled C/C-SiC composite

Jingjiang Nie, Yongdong Xu, Litong Zhang, Shangwu Fan, Fang Xu, Laifei Cheng, Junqiang Ma, Xiaowei Yin

科研成果: 期刊稿件文章同行评审

37 引用 (Scopus)

摘要

The microstructure, thermophysical, and ablative properties of a 3D needled C/C-SiC composite fabricated by chemical vapor infiltration combined with the liquid silicon infiltration process were investigated. The composite was composed of 64 wt% C, 20 wt% SiC, and 16 wt% Si. The thermal diffusivity in the plane direction was much higher than that in the through-the-thickness direction, while it was reversed for the coefficients of thermal expansion, and the differences reduced with increasing temperature. The linear and mass ablation rates in the oxyacetylene flame were 0.0039 mm/s and 0.0016 g/s on average, respectively. Various ablation processes including sublimation, thermochemical denudation, and oxidations occurred in different sections.

源语言英语
页(从-至)197-206
页数10
期刊International Journal of Applied Ceramic Technology
7
2
DOI
出版状态已出版 - 3月 2010

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