Abstract To improve the ablation resistance of carbon/carbon (C/C) composites at temperature about 2200 K, a ZrB2-SiC-TiSi2 ultra-high temperature ceramic coating was prepared by supersonic atmosphere plasma spraying on SiC coated C/C composites. The ZrB2-SiC-TiSi2 coating could protect C/C composites for more than 240 s under heat flux of 2400 kW/m2. The maximum surface temperature of the sample can reach to 2230 K. In addition, the mass and linear ablation rates of the coated samples after ablation for 240 s are only (0.314 ± 0.065) × 10−3 g/s and (0.221 ± 0.026) × 10−3 mm/s, respectively. The ZrB2-SiC-TiSi2 coating was converted into three layers after ablation: an outer layer, a particle-stacking layer, and a molten filled layer. The production of ZrTiO4, acting as sintering additive, could promote the sintering of ZrO2 and fill the pores, which effectively improved the ablation resistance of ZrB2-SiC-TiSi2 coating.

中文翻译：

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在高达 2200 K 的氧化环境下用于 SiC 涂层 C/C 复合材料的长寿命抗烧蚀性 ZrB2-SiC-TiSi2 陶瓷涂层

摘要 为提高碳/碳(C/C)复合材料在2200 K左右的抗烧蚀性能，采用超音速气氛等离子喷涂法在SiC包覆的C/C复合材料上制备了ZrB2-SiC-TiSi2超高温陶瓷涂层。ZrB2-SiC-TiSi2涂层可以在2400 kW/m2的热通量下保护C/C复合材料超过240秒。样品表面最高温度可达2230 K。此外，烧蚀240 s后涂层样品的质量和线性烧蚀率仅为(0.314±0.065)×10−3 g/s和(0.221±0.026) ) × 10−3 毫米/秒，分别。ZrB2-SiC-TiSi2涂层在烧蚀后转化为三层：外层、颗粒堆积层和熔融填充层。ZrTiO4 的产生作为烧结添加剂，可以促进 ZrO2 的烧结并填充孔隙，