HfC-SiC coatings have promising applications in the field of ablation protection for carbon-carbon (C/C) composites. In this work, HfC-SiC coatings with different ratios were designed and successfully prepared by low pressure chemical vapor co-deposition using HfCl₄-MTS-CH₄-H₂-Ar system under the guidance of thermodynamic calculations. The phase composition, microstructure, and ablation behavior of HfC-SiC coating with different phase proportions were investigated. The coating with HfC/SiC ratio of 1:1 showed the best ablation resistance after ablation for 90 s, and its mass and linear ablation rates of HfC-SiC coating was only 1.016 ± 0.12 mg/s and 0.998 ± 0.08 µm/s, respectively.

HfC-SiC涂层在碳-碳（C/C）复合材料的烧蚀保护领域具有广阔的应用前景。在这项工作中，在热力学计算的指导下，使用HfCl ₄ -MTS-CH ₄ -H ₂ -Ar体系通过低压化学气相共沉积设计并成功制备了不同比例的HfC-SiC涂层。研究了不同相比例的 HfC-SiC 涂层的相组成、微观结构和烧蚀行为。HfC/SiC 比为 1:1 的涂层在烧蚀 90 s 后表现出最佳的抗烧蚀性，HfC-SiC 涂层的质量和线性烧蚀速率仅为 1.016 ± 0.12 mg/s 和 0.998 ± 0.08 µm/s，分别。