Study on the Microstructure of Solar Selective Absorbing Coating Prepared by Magnetron Sputtering

Abstract:

The solar selective absorbing coating is the key component of solar energy collector which determines the heat conversion efficiency. The coating materials mentioned in this paper were prepared by Al as substrate, Al₂O₃-Pt as absorbing layer and metal Ag as infrared reflector. We got three kinds of coatings by adjusting the magnetron sputtering process. Respectively testing and analyzing the performance and microstructure showed that element content of Al, N, O in the coating are of important influence on its performance, meanwhile, the better the crystallization of coatings surface, the more helpful to improve the performance of its corrosion resistance and its moisture and heat resistance.

• Periodical: Advanced Materials Research (Volume 893)
• Pages: 825-829
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.893.825
• Online since: February 2014
• Authors: Qiao Ling Chen, Qiu Ling Han, Wen Yu Ye, Jian Hong Gong*
• Keywords: Crystallization, Magnetron Sputtering, Microstructure, Solar Selective Absorbing Coating

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