A novel Cr-doped Al₂O₃-SiC-ZrC coating systemis proposed to further improve the ablation resistance of C/C-ZrC-SiC composites. Our approach combines low pressure plasma spray method with slurry impregnation of Zr-Cr-Si-C to achieve a specially tailored oxide-carbide structure. Results show that the as-prepared coating was dense and crack-free, which effectively promoted the ablation resistance of C/C-ZrC-SiC with the mass and linear ablation rates decreased by 66% and 76% respectively, involving a highly dense protective structure of A1_xCr_2-xO₃-SiO₂-ZrO₂ formed during ablation. The compact and continuous multi-oxide scale with “ZrO₂-rosette” skeleton intricated with A1_1.96Cr_0.04O₃ was evidenced in the ablation center.

为了进一步提高C / C-ZrC-SiC复合材料的耐烧蚀性能，提出了一种新型的Cr掺杂Al ₂ O ₃ -SiC-ZrC涂层体系。我们的方法将低压等离子喷涂方法与Zr-Cr-Si-C的浆料浸渍相结合，以实现专门定制的氧化物-碳化物结构。结果表明，所制备的涂层致密无裂纹，有效提高了C / C-ZrC-SiC的抗烧蚀性，质量和线性烧蚀率分别降低了66％和76％，涉及到高密度的保护层。烧蚀过程中形成的Al _x Cr _2-x O ₃ -SiO ₂ -ZrO _2的结构。带有“ ZrO ₂ ”的紧凑且连续的多氧化物水垢烧蚀中心证实有“ Al-rosette”骨架与A1 _1.96 Cr _0.04 O ₃错综复杂。