Optical Selectivity Of Oxidized Stainless Steel

Bjorn Karlsson; Thommy Karlsson; Carl G. Ribbing

doi:10.1117/12.933268

12 April 1982 Optical Selectivity Of Oxidized Stainless Steel

Bjorn Karlsson, Thommy Karlsson, Carl G. Ribbing

Proceedings Volume 0324, Optical Coatings for Energy Efficiency and Solar Applications; (1982) https://doi.org/10.1117/12.933268
Event: 1982 Los Angeles Technical Symposium, 1982, Los Angeles, United States

Abstract

The possibility to use oxidized stainless steel as the absorbing surface in solar thermal collectors is evaluated. In this evaluation the influence of the Fe₂0₃, Cr₂0₃ and a mixed oxide obtained in chemical oxidation as well as the steel base, are studied separately. Conventional optical theory is used for the calculation of the resulting tandem reflectance which aiveg good agreement with related experimental curves. We can understand the high selectivity for the chemical oxide as the combined effect of the moderate reflectance of the ferritic stainless steel, a n-value as small as 1.4 and a sufficiently strong tail in k into the NIR-region for the oxide-layer.

Citation Download Citation

Bjorn Karlsson, Thommy Karlsson, and Carl G. Ribbing "Optical Selectivity Of Oxidized Stainless Steel", Proc. SPIE 0324, Optical Coatings for Energy Efficiency and Solar Applications, (12 April 1982); https://doi.org/10.1117/12.933268

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