W/AlSiTiNx/SiAlTiOyNx/SiAlOx multilayered solar thermal selective absorber coating

Solar thermal energy has often been used as a renewable green energy source. Here we present a design composed of a highly selective solar thermal absorber coating that has been deposited by DC magnetron sputtering. This will consist of four layers: W/AlSiTiNx/SiAlTiOyNx/SiAlOx. The coating that was...

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Bibliographic Details
Main Author: AL-Rjoub, A. (author)
Other Authors: Rebouta, L. (author), Cunha, N. F. (author), Fernandes, F. (author), Barradas, N. P. (author), Alves, E. (author)
Format: article
Language:eng
Published: 2020
Subjects:
Selective coating
Sputtering
Thermal stability
AlSiTiNx/SiAlTiOyNx
AlSiTiN /SiAlTiO N x y x
Ciências Naturais::Ciências Físicas
Science & Technology
Online Access:http://hdl.handle.net/1822/72744
Country:Portugal
Oai:oai:repositorium.sdum.uminho.pt:1822/72744
Description
Summary:Solar thermal energy has often been used as a renewable green energy source. Here we present a design composed of a highly selective solar thermal absorber coating that has been deposited by DC magnetron sputtering. This will consist of four layers: W/AlSiTiNx/SiAlTiOyNx/SiAlOx. The coating that was utilised revealed an excellent average solar thermal absorbance, (alpha = 95.5%) with very low emittance, (epsilon = 9.6% calculated for 500 degrees C) together with an excellent thermal stability after annealed at 500 degrees C, in air for 350 h, and at 630 degrees C in vacuum for 220 h.

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