With the development of new materials and technology, high entropy alloy (HEA) nitride films have attracted much attention of researchers due to their excellent optical properties and mechanical properties. Herein, a novel SS/NbMoTaWN (HEAN)/NbMoTaWON (HEAON)/SiO₂ coatings are prepared, which shows a high spectral selectivity of α/ε = 0.944/0.12. The preparation and optimization of the coating are studied by combining experiments with ellipsometric program and CODE software. High temperature thermal stability test is performed in depth, which proves that the coating could bear 400 °C in air for 2 h, and 600 °C for 2 h in vacuum. Long-term thermal stability researches indicate that the SSACs still keep good optical properties (α = 0.902, ε = 0.106) even after annealing at 600 °C for 100 h. The failure mechanism is analyzed by XRD and Raman spectra. In addition, neutral salt spray test is performed to investigate the anti-corrosion ability, which indicates the coating has a good optical performance after soaking in 3.5 wt% NaCl solution for 30 days. Obviously, this work provides a new strategy to construct solar absorber coatings based on NbMoTaW high entropy alloy.

随着新材料和新技术的发展，高熵合金（HEA）氮化物薄膜因其优异的光学性能和机械性能而备受研究人员的关注。在此，制备了一种新型 SS/NbMoTaWN (HEAN)/NbMoTaWON (HEAON)/SiO ₂涂层，其具有高光谱选择性，α/ ε  = 0.944/0.12。结合椭偏程序和CODE软件的实验，对涂层的制备和优化进行了研究。深入进行了高温热稳定性试验，证明该涂层在空气中可承受400℃2小时，在真空中600℃可承受2小时。长期热稳定性研究表明 SSACs 仍然保持良好的光学性能 (α = 0.902, ε = 0.106) 即使在 600 °C 下退火 100 小时。通过XRD和拉曼光谱分析了失效机制。此外，还进行了中性盐雾试验以考察其抗腐蚀性能，表明涂层在 3.5 wt% NaCl 溶液中浸泡 30 天后具有良好的光学性能。显然，这项工作为构建基于 NbMoTaW 高熵合金的太阳能吸收涂层提供了一种新策略。