Abstract The thermal stability of the high- temperature spectrally selective solar absorber coating (SSSAC) is strongly dependent on the melting point and oxidation resistance of the metal filler atom. However, in this paper, the practicability on Mo-MoO3-TiC coating prepared through natural oxidation of Mo-TiC coating is investigated. For the Mo-MoO3-TiC absorber layer, the Mo-MoO3 nanocrystalline is embedded into the amorphous TiC matrix. Thermal stability test demonstrates that the spectrally selectivity (α/e) of the coating remain unchanged even after annealed it at 600 °C for 200 h under vacuum. Furthermore, the details of the failure mechanism of the coating annealed at 700 °C vacuum is investigated, which provide theoretical support for the design of SSSAC with stable structure.

中文翻译：

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基于嵌入非晶 TiC 的 Mo-MoO3 纳米晶的新型太阳能吸收涂层：微观结构、热稳定性和失效分析

摘要 高温光谱选择性太阳能吸收涂层 (SSSAC) 的热稳定性很大程度上取决于金属填料原子的熔点和抗氧化性。然而，在本文中，研究了通过自然氧化 Mo-TiC 涂层制备的 Mo-MoO3-TiC 涂层的实用性。对于 Mo-MoO3-TiC 吸收层，Mo-MoO3 纳米晶嵌入到非晶 TiC 基体中。热稳定性测试表明，即使在真空下 600 °C 下退火 200 小时后，涂层的光谱选择性 (α/e) 仍保持不变。此外，详细研究了700℃真空退火涂层的失效机理，为结构稳定的SSSAC的设计提供了理论支持。