Characterization of gas/surface interactions for ceramic matrix composites in high enthalpy, low pressure air flow
Characterization of gas/surface interactions for ceramic matrix composites in high enthalpy, low pressure air flow
复制标题
高焓低压气流中陶瓷基复合材料气体/表面相互作用的表征
DOI：
10.1016/j.matchemphys.2012.03.036
复制
发表时间：
2012
影响因子：
4.6
通讯作者：
O. Chazot
中科院分区：
文献类型：
--
作者：
F. Panerai;O. Chazot
陶瓷基复合材料是可重复使用航天器再入大气层的理想隔热材料。表面和周围反应气体之间的相互作用决定了壁的总热通量，并成为热保护系统的设计驱动因素。本文介绍了在电感耦合等离子体设备，提供高焓和低压条件下，适合于模拟高超声速飞行环境的碳/碳化硅试样的表征。催化复合系数和发射率在1200和2000 K之间的表面温度的测定。光谱反射率测量允许评估材料的氧化行为，显示表面二氧化硅的形成，以及在1800 K以上的温度下的降解。在供试品前进行的光学发射光谱测量表明硅在高温下挥发。
Ceramic matrix composites are ideal heat shield materials for reusable spacecrafts re-entering the Earth atmosphere. The interactions between the surface and the surrounding reactive gas determine the total heat flux to the wall and become design drivers for the thermal protection system. This paper presents the characterization of carbon/silicon carbide specimens in an inductively-coupled plasma facility, providing high enthalpy and low pressure conditions, suitable to simulate the hypersonic flight environment. Catalytic recombination coefficients and emissivities at surface temperatures between 1200 and 2000 K are determined. Spectral reflectivity measurements allow to assess the oxidation behavior of the materials, showing the formation of silica at the surface, and its degradation at temperatures above 1800 K. Optical emission spectroscopy measurements in front of the test articles indicate silicon volatilization at high temperatures.
DOI：
10.1108/09615530410532286
发表时间：
2004-06
影响因子：
4.2
作者：
G. Degrez;D. V. Abeele;P. Barbante;B. Bottin
通讯作者：
G. Degrez;D. V. Abeele;P. Barbante;B. Bottin