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 MIL-HDBK-1003/13A
TABLE 2-2. Characteristics of Absorber Coatings (U.S. Dept. of HUD, 1977).
[Selective Coatings - [alpha]/[epsilon] > 2; Non-selective
Coatings - [alpha]/[epsilon] ~ 1]
[alpha] Breakdown
Property/
Absorptance,[a] Emittance, Temperature
Comments
Material
[alpha]
[epsilon] [epsilon] deg. F
(deg. C)
Black Chrome
0.87-0.93
0.1
9
Alkyd Enamel
0.9
0.9
1
Durability
limited at
high
temperatures.
Black Acrylic 0.92-0.96
0.86-0.93
1
Paint
Black Inorganic 0.89-0.97
0.84-0.90
1
Paint
Black Silicone 0.86-0.94
0.83-0.89
1
Silicone
Paint
binder.
PbS/Silicone
0.94
0.4
2.5
662 (350) Has a high
Paint
emittance
for thickness
> 10[mu]m.
Flat Black
0.95-0.98
0.89-0.97
1
Paint
Ceramic
0.9
0.5
1.8
Stable at high
Enamel
temperatures.
Black Zinc
0.9
0.1
9
Copper Oxide
0.93
0.11
8.5
392 (200)
Over Aluminum
Black Copper
0.85-0.90
0.08-0.12
7-11 842 (450) Patinates with
Over Copper
moisture.
Black Chrome
0.92-0.94
0.07-0.12
8-13 842 (450) Stable at high
Over Nickel
temperature.
Black Nickel
0.93
0.06
15
842 (450) May be
Over Nickel
influenced
by moisture
at elevated
temperatures.
Ni-Zn-S Over
0.96
0.07
14
536 (280)
Nickel
Black Iron
0.90
0.10
9
Sunsponge Foil 0.93-0.95
0.08-0.12
8-11 500 (260) Tradename
Aluminum Foil
of Berry Solar
Products
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