Black coating | Magic Black™ coating- absolute lowest reflectance | Acktar

Magic Black Coating

Magic Black coating on a component
3 metallic circular components coated with acktar’s magic black coating
metallic circular component coated with acktar’s magic black coating
Metallic component coated with acktar’s magic black coating
Magic Black coating on gold components
circular component coated with magic black coating
component coated with magic black coating

Magic Black™ is the coating of choice where the absolute lowest reflectance is required in the EUV, UV, VIS up to SWIR regions.

  • Essentially zero outgassing
  • Vacuum and thermal-vacuum cycling compatible
  • No particulation
  • Only a few microns thick
  • Adhesion virtually to all substrate materials
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High Adhesion
Space Qualified
Low Reflection
Thickness 3-5µm
Temperature stability
Light Weight
REACH ROHS Compliant
Low Outgassing
Completely Inorganic
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Specifications

Adhesion
metals, glass, ceramics, polymers
Adhesion test (ref ECSS-Q-ST-13C)
Coated pieces withstand scotch tape test (3M853 Crystal Clear tape, strength of 13N per 25mm), without any evidence of coating removal.
Outgassing CVCM (%)
0.001
Outgassing RML (%)
0.2
Coating chemical content
completely inorganic
Surface resistivity
≤2X10^3Ω/□
Material
metal
Cleanability
"Coated pieces withstand cleaning with ethanol, IPA or acetone with no change in optical and technical characteristics. Magic Black™, Metal Velvet™ and Litho Black™ should be cleaned very gently."
Parts shape
3D
Humidity Resistance
MIL-C- 48497A
Certificates
ROHS, REACH, ISO 9001:2015, AS9100

Typical Properties

 

Magic black reflectance chart

Magic BlackTM is the coating of choice where the absolute lowest reflectance / highest emissivity is required in the FUV — UV, VIS up to SWIR regions – typically for stray-light suppression.

In addition to its superior optical performance Magic BlackTM delivers many other attributes important in space applications:

  • Essentially zero outgassing
  • Vacuum and thermal-vacuum cycling compatible
  • Operating temperatures from (-)269°C to (+)380°C
  • No particulation
  • Only a few microns thick
  • Compatible with virtually all substrate materials

Magic BlackTM was thoroughly tested and qualified for thermal cycling, thermal vacuum cycling, cryogenic temperature performance, outgassing, space atomic oxygen, reflectance after environmental exposure, adherence. Detailed BRDF data is available.

Operational wavelengths
EUV-NIR
Coating thickness
3-5µm
Emissivity 3-10µm
>93
Emissivity 3-30µm
>75
Working temperature (°C)
-269 °C to 380 °C
Working temperature (°K)
4 °K to 653 °K
Weight of coating
0.7 - 1.1 (mg/cm²)
Light Abrasion resistance
(ref MIL-C-48497A)

Additional Details

Magic BlackTM has been extensively tested and qualified for space applications and is applied in a variety of space programs including among others:

  • ESA Bepi Colombo
  • Star Trackers on various satellites
  • ESA Sentinel 2, Sentinel 4 — Earth Observation
  • Earth Video Camera and more

pdf-icon

EUV Reflectivity measurements

on Acktar Sample Magic Black

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