Selective absorption film of a solar heat collector

Details Selective absorption film of a solar heat collector Selective absorption film of a solar heat collector

1983-09-08

1987-01-20

Zugel, Francis K.

Stoves and furnaces

Tool having fluid fuel burner

Soldering iron

126901, 4273837, F24J 200, B05D 302

Patent

active

046373748

ABSTRACT:
A selective absorption film selectively absorbing solar rays and composed mainly of cobalt oxide.
A blue system selective absorption film having high heat resistance at high temperatures is provided by coating one surface of a metal material of iron or copper with cobalt, and maintaining the cobalt layer in a furnace at an oxidizing atmosphere for a desired time, while supplying water vapor to the furnace maintained in an oxidizing atmosphere so as to carry out an oxidation treatment.

REFERENCES:
patent: 3944440 (1976-03-01), Franz
patent: 4122832 (1978-10-01), Hirsuhsohn
patent: 4153753 (1979-05-01), Woodman

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