Microstructures and ablation properties of 3D 4-directional Cf/ZrC–SiC composite in a plasma wind tunnel environment
Microstructures and ablation properties of 3D 4-directional Cf/ZrC–SiC composite in a plasma wind tunnel environment
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DOI：
10.1016/j.ceramint.2014.02.127
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发表时间：
2014-08
影响因子：
5.2
通讯作者：
Yan Ma;Qing-gang Li;S. Dong;Zhi Wang;G. Shi;Haijun Zhou;Zhen Wang;Ping He
中科院分区：
文献类型：
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作者：
Yan Ma;Qing-gang Li;S. Dong;Zhi Wang;G. Shi;Haijun Zhou;Zhen Wang;Ping He
利用等离子体风洞实验装置研究了三维四向Cf/ ZrC-SiC复合材料的烧蚀性能。当表面温度为2400 K、持续时间为600 s时，复合材料具有良好的构型稳定性。烧蚀后，复合材料的质量损失率为7.0×10−4g/s，线性衰退率为9.0×10−4mm/s。复合材料表面zro2和sio2的粘性二元玻璃混合物是提高烧蚀性能的主要原因。烧蚀后，由于温度梯度和压力梯度的影响，复合材料呈现出烧蚀中心区、烧蚀过渡区和不烧蚀区三个不同的区域。
The ablation property of a three-dimensional 4-directional Cf/ZrC–SiC composite was determined by using a plasma wind tunnel facility. The composite exhibited excellent configurational stability with surface temperature of 2400 K for 600 s. After ablation, the composite showed a mass loss rate of 7.0×10−4g/s and a linear recession rate of 9.0×10−4mm/s. The viscous binary glass mixture of ZrO2and SiO2on the surface of the composite mainly contributed to the improvement in the ablation property. After ablation, the composite showed three different zones, namely, the ablation center region, ablation transition region, and unablation region, because of the temperature and pressure gradients.