Abstract To improve the ablation resistance of carbon/carbon composites at the temperature above 2000 K, a ZrB 2 -SiC-ZrC ultra-high temperature ceramic coating was prepared by combination of supersonic atmosphere plasma spray (SAPS) and reaction melt infiltration. The micro-holes in ZrB 2 -Si-ZrC coating prepared by SAPS were effectively filled and the compactness and interface compatibility between the coating and C/C composites was improved through the reaction melt infiltration process. The ultra-high temperature ceramic coating exhibited good ablation resistance under oxyacetylene torch ablation above 2000 K. After ablation for 120 s, the mass and linear ablation rates of the ZrB 2 -SiC-ZrC coated C/C samples were only −0.016 × 10 −3 g/s and 1.30 µm/s, respectively. Good ablation resistance of the ultra-high temperature ceramic coating is mainly attributed to the dense coating structure and the improvement of interface compatibility between the coating and C/C composites.

中文翻译：

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用于抗2000 K以上烧蚀的碳/碳复合材料的超高温陶瓷涂层

摘要 为提高碳/碳复合材料在2000 K以上的抗烧蚀性能，采用超音速气氛等离子喷涂（SAPS）和反应熔体渗透相结合的方法制备了ZrB 2 -SiC-ZrC超高温陶瓷涂层。SAPS制备的ZrB 2 -Si-ZrC涂层中的微孔被有效填充，通过反应熔体渗透过程提高了涂层与C/C复合材料的致密性和界面相容性。超高温陶瓷涂层在2000 K以上氧乙炔炬烧蚀下表现出良好的抗烧蚀性。烧蚀120 s后，ZrB 2 -SiC-ZrC涂层C/C样品的质量和线性烧蚀率仅为-0.016 × 10 -3 g/s 和 1.30 µm/s，分别。