Abstract To enhance the oxidation and ablation performances of SiC coating, C/C composites with a porous surface layer were designed via blasting treatment and then followed by ZrB2 additive in the process of pressure-less reactive sintering. Cyclic ablation test using oxyacetylene torch from 1750 °C to room temperature showed that the coating possessed good ablation performance accompanying with the formation of Zr-O-Si glassy protective layer. The good sintering performance combined with the increased coating/substrate interfaces contributed to reduce the cyclic thermal stress and enhance the stability of the Zr-O-Si layer to the denudation of oxyacetylene torch, thus promoting the ablation performance.

中文翻译：

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碳/碳复合材料喷丸处理和SiC/ZrB 2 改性SiC涂层对其氧化和循环烧蚀性能的影响

摘要 为了提高碳化硅涂层的氧化和烧蚀性能，通过喷砂处理设计了具有多孔表面层的C/C复合材料，然后在无压反应烧结过程中加入ZrB2添加剂。氧乙炔炬从1750℃到室温的循环烧蚀试验表明，涂层具有良好的烧蚀性能，同时形成Zr-O-Si玻璃态保护层。良好的烧结性能与增加的涂层/基材界面相结合，有助于降低循环热应力，增强 Zr-O-Si 层对氧乙炔炬剥蚀的稳定性，从而提高烧蚀性能。