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One of a family of proprietary
black coatings for optical and decorative use
AnoBlack 'EC' and 'EC7' are electrolytic coloring processes for
blackening anodized 6000 and 7000 series aluminum alloys. Blackening
is accomplished using inorganic metallic salts (not organic dyes)
and thus is 100% smut-free and will not fade under extremes of
light or temperature.
In addition, the AnoBlack 'EC'
and AnoBlack 'EC7' coatings will not outgas in vacuum environment
applications.
AnoBlack 'EC' and 'EC7' coatings
meet MIL-A-8625, Type II, Class 2 for black sulfuric anodize
and have been approved by major aerospace manufacturers for space
vehicle applications where emissivity and the ability to withstand
high temperatures, 500'F (240'C), are critical.
2000 series alloys, such as 2024,
do not lend themselves to blackening using the AnoBlack 'EC'
or 'EC7' processes.
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RECOMMENDED USAGE
- any application where the parts
are subjected to extreme light such as any outdoor environment,
space vehicle cooling, and space vehicle antennas
- optical applications using either
ultraviolet or infrared light in which the black color must not
fade or be bleached
- applications where stringent
cleanliness is critical such as in semiconductor mfg. where the
'no smut' coating is required
- medical devices which are subjected
to heat and aggressive cleaning environment such as peroxide
which is necessary for sterilization
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AnoBlack EC is used on components
for global positioning satellites which
track flight characteristics of aircraft
anywhere in the world. |
Typical
Properties
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AnoBlack 'EC' and 'EC7' coatings
on 6000 and 7000 series aluminum are able to withstand 500°F
(240°C) for 1 hour without-any degradation. Anoplate has
successfully coated 3000 and 5000 series aluminum alloys as well
as 6000 and 7000 series alloys. |
The 'total normal emittance' of
the AnoBlack 'EC' and 'EC7' coatings following a 500°F bake
is greater than 0.90. (measurements made using Gier-Dunkle Paraboloid
Spectrophotometer with a Perkin Elmer Grating Monochromator) |
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