A novel TiC-TiN based spectrally selective absorbing coating: Structure, optical properties and thermal stability

被引：0

作者：

Zhao, Shuai-Sheng ^{[1
]}

Gao, Xiang-Hu ^{[2
]}

Qiu, Xiao-Li ^{[2
]}

Yu, Dong-Mei ^{[2
]}

Tian, Guang-Ke ^{[1
]}

机构：

[1] National Engineering Research Center for Technology and Equipment of Green Coating, Lanzhou Jiaotong University, Lanzhou,730070, China

[2] Research and Development Center for Eco-Chemistry and Eco-Materials, Lanzhou Institute of Chemical Physics, Chinese Academy of Sciences, Lanzhou,730000, China

来源：

Infrared Physics and Technology | 2020年 / 110卷

基金：

中国国家自然科学基金;

关键词：

Magnetron sputtering - Infrared devices - Morphology - Titanium nitride - Chemical analysis - Conversion efficiency - Surface morphology - Titanium alloys - Optical properties - Solar energy - Thermodynamic stability - Coatings;

D O I：

暂无

中图分类号：

学科分类号：

摘要：

A novel TiC-TiN/Al2O3 tandem solar selective absorbing coating was successfully deposited on Si (1 0 0) and stainless steel (SS) substrates by reactive RF magnetron sputtering deposition. The spectral characteristics, microstructure, thermal stability and solar-thermal conversion efficiency of the coating before and after a long annealing in vacuum were investigated systematically. The optical constants of the coating are measured by an Ultraviolet–visible-near-infrared (UV/Vis/NIR) spectrometer, and the chemical composition analysis, structure information and surface morphology are investigated using XRD, XPS and FESEM. An excellent absorptance (α = 0.92) and a low emittance (Ε = 0.11) at 82 °C are obtained by the as-prepared coatings. After annealed at 500 °C for 100 h in vacuum, there is no significant change in micromorphology and optical properties of the coating, which produces a good solar-thermal conversion efficiency. These results indicate that it can be applied as a potential coating material to a high temperature concentrated solar power (CSP) system. © 2020 Elsevier B.V.

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