Stock material or miscellaneous articles – All metal or with adjacent metals – Porous
Patent
1981-08-18
1982-11-30
Lewis, Michael L.
Stock material or miscellaneous articles
All metal or with adjacent metals
Porous
428141, 428551, 428552, 428561, 428670, 428680, 428687, 428936, 126901, B32B 300, B32B 1504, B32B 1516
Patent
active
043616305
ABSTRACT:
The invention provides a method of producing an ultra-black surface coating, having an extremely high light absorption capacity, on a substrate, such as a metal, ceramic, glass, or plastic, the blackness being associated with a unique surface morphology consisting of a dense array of microscopic pores etched into the surface, as well as the resulting coated substrate.
The ultra-black surface, which has a spectral reflectance on the order of about from 0.5 to 1.0% at wavelengths of light of about from 320 to 2140 nanometers, finds use as a solar collector in the field of solar energy.
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Englert Alvin J.
Lewis Michael L.
Pawlikowski Eugene J.
The United States of America as represented by the Secretary of
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