Effect of loading spectrum with different single pulsing time on the cyclic ablation of C/C-SiC-ZrB2-ZrC composites in plasma
Effect of loading spectrum with different single pulsing time on the cyclic ablation of C/C-SiC-ZrB2-ZrC composites in plasma
复制标题
不同单脉冲时间加载谱对C/C-SiC-ZrB2-ZrC复合材料等离子体循环烧蚀的影响
DOI：
10.1016/j.corsci.2021.109817
复制
发表时间：
2021-09-09
影响因子：
8.3
通讯作者：
Zhang, Yang
中科院分区：
文献类型：
--
作者：
Liu, Lei;Li, Boyan;Zhang, Yang
为支持C/C-SiC-ZrB 2-ZrC复合材料在先进内燃机活塞和高速铁路受电弓滑板上的应用，通过调节单次冲击时间，在等离子体和压缩空气交替燃烧条件下，进行了不同载荷谱的循环烧蚀试验，研究了C/C-SiC-ZrB 2-ZrC复合材料在超高温高频脉冲流中的烧蚀特性。当加载时间从0.5增加到5 s时，烧蚀率急剧上升，而表面温度逐渐变化。烧蚀形貌表明，烧蚀机理由机械烧蚀转变为化学反应，导致烧蚀率急剧上升。
To support the application for piston of advanced internal combustion engine and pantograph slide plate of high-speed rail, cyclic ablation with different loading spectrums in alternate plasma combustion and compressed air flow were performed by adjusting single impacting time to understand the characteristics of C/C-SiC-ZrB2-ZrC composites in high frequent pulsing fluid at ultra-high temperature. When the loading time increased from 0.5 to 5 s, the ablation rates rose sharply while the surface temperature changed incrementally. Ablation morphology indicated that the change of dominant ablation mechanism from mechanical erosion to chemical reaction resulted in the sharp rise of the ablation rates.