本发明属于抗烧蚀合金技术领域,公开一种抗高温烧蚀高熵合金涂层及其制备方法；所述制备方法为：以金属材料或表面具有SiC过渡层的碳基材料为基体,以难熔高熵合金粉末W-aMo-bTa-cX-d作为喷涂粉末,采用等离子热喷涂技术,将所述难熔高熵合金粉末W-aMo-bTa-cX-d等离子热喷涂于基体材料的表面上,使所述难熔高熵合金粉末W-aMo-bTa-cX-d在所述基体材料表面上形成抗高温烧蚀高熵合金涂层。本发明采用等离子热喷涂技术,将难熔高熵合金粉末喷涂于基体表面形成高熵合金涂层；且本发明制备的涂层具有可以抵抗3000K高温焰流的长时间烧蚀,且线烧蚀率低于0.01mm/s。

The invention belongs to the technical field of anti-ablative alloy and discloses a high-temperature ablative high-entropy alloy coating and a preparation method thereof. The preparation method is: The refractory high entropy alloy powder W-AMo-BTA-CX-D is sprayed on the surface of the substrate material by plasma thermal spraying technology. The metal material or carbon-based material with SiC transition layer on the surface is used as the substrate material, and the refractory high entropy alloy powder W-AMo-BTA-CX-D is sprayed on the surface of the substrate material to make the refractory high entropy alloy powder W- aMo-bTa-cX-d forms a high temperature ablation-resistant high entropy alloy coating on the surface of the base material. The invention adopts plasma thermal spraying technology to spray refractory high entropy alloy powder on the substrate surface to form a high entropy alloy coating. The coating prepared by the invention has a long time ablation resistance to 3000K high temperature flame flow, and the line ablation rate is lower than 0.01mm/s.