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Thermal stability of high entropy graded solar selective absorbers deposited by non-equilibrium RF magnetron sputtering by Xiaomei Zeng; Vasiliy Pelenovich; D. Neena; Chang Xu; Xiangyu Zhang; Alexander Pogrebnjak; Bing Yang; Sheng Liu is a Materials Science article available to read on EtoBox.
What is Thermal stability of high entropy graded solar selective absorbers deposited by non-equilibrium RF magnetron sputtering about?
In this paper, we evaluate the thermal stability of high-entropy AlCrNbSiTi-based selective solar absorbers (SSAs) in air and vacuum medium. The SSAs have been prepared by a recently developed non-equilibrium reactive RF magnetron sputtering route. This method has synthesized the effective one-layer SSAs with gradient metal and oxygen composition. A few different targets are being used to evaluate the elemental composition effect on the high-temperature stability of the SSAs. AlCrNbSiTi target with an element ratio of 3:2:1:1:2 shows the highest stability after heating at 500 °C for 1 h in air. The emittance and absorptance of the absorbers on Mo and W infrared mirrors are in the range of 0.05–0.12 and 0.11–0.23, and 0.91–0.92 and 0.93–0.96, respectively. High-resolution transmission electron microscopy exhibits the amorphous structure of the absorbing layers with gradient metal and oxygen composition. The graded high-entropy SSAs demonstrate stability with PC< 0.05 in the air at 500 °C for 4 h and in a vacuum at 700 °C for at least 1 h. Heat treatment at 500 °C for 14 h in the air leads to equalization of the element concentrations and increase of the oxygen concentration at the b
Who reads Thermal stability of high entropy graded solar selective absorbers deposited by non-equilibrium RF magnetron sputtering?
It is typically read by researchers, students, and practitioners in Materials Science.
- Author
- Xiaomei Zeng; Vasiliy Pelenovich; D. Neena; Chang Xu; Xiangyu Zhang; Alexander Pogrebnjak; Bing Yang; Sheng Liu
- Publisher
- Elsevier BV
- Published
- 2023
- Language
- EN
- Field
- Materials Science (Physical Sciences)