Effect of surface air cooling on the high frequent cyclic ablation of C/C-SiC-ZrB2-ZrC composite under ms-scale single loading
Effect of surface air cooling on the high frequent cyclic ablation of C/C-SiC-ZrB2-ZrC composite under ms-scale single loading
复制标题
表面空气冷却对毫秒级单次加载下C/C-SiC-ZrB2-ZrC复合材料高频循环烧蚀的影响
DOI：
10.1016/j.vacuum.2022.111274
复制
发表时间：
2022-09-01
期刊：
影响因子：
4
通讯作者：
Shi, Haotian
中科院分区：
文献类型：
--
作者：
Feng, Wei;Han, Qinxin;Shi, Haotian
Influence of surface air cooling on the high frequent cyclic ablation of layer-structural C/C-SiC-ZrB2-ZrC composite was mainly studied. Tests were performed by alternant plasma and surface cooling airflow for 200 cycles under ms-scale single loading. The C/C-SiC-ZrB2-ZrC composite displayed good ablation resistance. And the ablation rates decreased firstly and then rose up with increasing of the airflow rate from 0 to 4 m3/h, whereas the highest surface temperature presented an inverse relationship. The lowest ablation rates were 0.12 mu m/s and 0.038 mg/s under surface airflow of 2 m3/h. Morphologies and phases of the ablated surface indicated that the low-speed airflow was helpful to the spread out and accumulation of the ablation products whereas the stronger airflow caused surface cracks and fragments of the composite. The intensities of the mechanical erosion under different surface air cooling dominated the high frequent cyclic ablation behavior.
