ABLATION OF CARBON-CARBON COMPOSITES WITH TANTALUM
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摘要: 根据TaC和C/C复合材料的物理化学性质及烧蚀环境推测C/TaC/C复合材料的烧蚀机理,并对其抗侵蚀机理及剥蚀进行了预测分析,在分析C/TaC/C复合材料烧蚀机理的基础上建立其烧蚀模型。根据Darcy定律确定TaC液体流动的速度,并在此基础上利用流体动力学和质量守恒定律等推导出C/TaC/C复合材料质量烧蚀率公式。
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关键词:
- C/TaC/C复合材料 /
- 烧蚀机理 /
- 烧蚀模型
Abstract: According to the physicochemical properties of C/C composites and TaC and the environment, in which C/TaC/C composites is ablated, the ablation mechanism of C/TaC/C composites is deduced. It is analyzed in detail for C/TaC/C composites how to resist erosion and denudation. Then, its ablative model is established on the basis of analyzing the ablation mechanism of C/TaC/C composites. The flow velocity of liquid TaC can be deduced by using Darcy's law. The mass ablative rate of C/TaC/C composites is ultimately derived from hydrokinetics and conservation of mass. All these make some helpful discussion for thermal protection materials in the field of astronautics.-
Key words:
- C/TaC/C composites /
- ablative model /
- ablative rate
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