TY - JOUR
T1 - Microstructure, thermophysical, and ablative performances of a 3D needled C/C-SiC composite
AU - Nie, Jingjiang
AU - Xu, Yongdong
AU - Zhang, Litong
AU - Fan, Shangwu
AU - Xu, Fang
AU - Cheng, Laifei
AU - Ma, Junqiang
AU - Yin, Xiaowei
PY - 2010/3
Y1 - 2010/3
N2 - 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.
AB - 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.
UR - http://www.scopus.com/inward/record.url?scp=77649264042&partnerID=8YFLogxK
U2 - 10.1111/j.1744-7402.2008.02341.x
DO - 10.1111/j.1744-7402.2008.02341.x
M3 - 文章
AN - SCOPUS:77649264042
SN - 1546-542X
VL - 7
SP - 197
EP - 206
JO - International Journal of Applied Ceramic Technology
JF - International Journal of Applied Ceramic Technology
IS - 2
ER -