Ultra-high-temperature Ta-Hf-C solid solution coating is successfully prepared by induction plasma spheroidization (IPS) combine with vacuum plasma spraying (VPS). The microstructure, mechanical properties and ablation performance of the Ta-Hf-C coating are investigated. Results show that the as-sprayed coating is a solid solution Ta-Hf-C ternary ceramic coating. The highest average hardness and elastic modulus obtained by nanoindentation are 28.05 GPa and 307.35 GPa, respectively. The coating exhibits a good ablation resistance under heat flux of 4.18 MW/m². After 30 s ablation, the mass and linear ablation rates of the Ta-Hf-C coating are −0.58 mg/s and −0.94 μm/s, respectively. The ablation resistance mechanism is studied. The formation of Hf₆Ta₂O₁₇ on the coating surface and the Ta-Hf-C-O intermediate transition layer in the coating slow down the ablation and improve the ability to resist ultra-high temperature.

通过感应等离子体球化（IPS）和真空等离子体喷涂（VPS）成功地制备了超高温Ta-Hf-C固溶体涂层。研究了Ta-Hf-C涂层的微观结构，力学性能和烧蚀性能。结果表明，喷涂后的涂层是固溶Ta-Hf-C三元陶瓷涂层。通过纳米压痕获得的最高平均硬度和弹性模量分别为28.05 GPa和307.35 GPa。该涂层在4.18 MW / m ^2的热通量下显示出良好的耐烧蚀性。烧蚀30 s后，Ta-Hf-C涂层的质量和线性烧蚀速率分别为-0.58 mg / s和-0.94μm/ s。研究了抗烧蚀机理。Hf ₆ Ta ₂ O的形成涂层表面上的₁₇和涂层中的Ta-Hf-CO中间过渡层减慢了烧蚀并提高了抗超高温的能力。