Cermet film selective-black absorber

Details Cermet film selective-black absorber Cermet film selective-black absorber

1982-01-21

1984-04-10

Hess, Bruce H.

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126417, 350 11, 350 16, 350 17, 428328, 428333, 428469, 428472, 428913, B32B 516, B32B 1504, F24J 302

Patent

active

044421664

ABSTRACT:
A selective-black absorber capable of operation at elevated temperatures and high efficiency as a solar energy absorber is described. A cermet of MgO/Au, MgO/Pt, and Cr.sub.2 O.sub.3 /Cr having high solar energy absorptance and low infrared energy emissivity is coated on a substrate having high infrared reflectivity such as Mo coated on stainless steel; Ni coated on Cu, or steel; aluminum, or steel. Typically an absorption coefficient of about 0.93 with an emissivity of about 0.09 is obtained and operation at a temperature of 300.degree.-400.degree. C. is possible depending on the cermet and substrate materials.

REFERENCES:
patent: 3069759 (1962-12-01), Grant et al.

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