Selective absorber of solar energy and process for producing sam

Details Selective absorber of solar energy and process for producing sam Selective absorber of solar energy and process for producing sam

1980-12-29

1982-05-18

Kendall, Ralph S.

Metal treatment

Compositions

Heat treating

148 627, 148 63, 148 616, 427160, C23F 726, C23F 706

Patent

active

043303447

ABSTRACT:
A selective absorber of solar energy using an aluminum alloy sheet as a substrate on which a chemical conversion coating is initially formed. The coating is subsequently oxidized into a dark-colored coating of selective solar absorption nature. Also disclosed is a process which comprises a chemical conversion treatment step for formation of the initial coating, and a high-temperature oxidation treatment step for final formation of the selective coating for solar energy absorption.

REFERENCES:
patent: 2544139 (1951-03-01), Deyrup et al.

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