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Poco Graphite Inc. SuperSiC 0.25m Mirror Cryogenic Test ResultSuperSiC, a low areal density material, developed by POCO Graphite, have been used as mirror substrate for high energy lasers, laser radar systems, surveillance, telescopes, scan mirrors and satellites. SuperSiC has excellent thermal properties and cryogenic stability. It exhibits exceptional polishability for reflective optics with high strength, stiffness, and excellent thermal conductivity. A lightweighted 0.2-diameter polished SuperSic mirror was tested at cryogenic temperature at NASMSFC. Optical test results showed 6nm cry0 deformation from ambient to 30 degrees Kelvin and little to no change in its surface figure due to cry0 cycling.
Document ID
20040121137
Acquisition Source
Marshall Space Flight Center
Document Type
Conference Paper
Authors
Eng, Ron (NASA Marshall Space Flight Center Huntsville, AL, United States)
Stahl, Phil (NASA Marshall Space Flight Center Huntsville, AL, United States)
Hogue, Bill (NASA Marshall Space Flight Center Huntsville, AL, United States)
Hadaway, James (Alabama Univ. Huntsville, AL, United States)
Date Acquired
August 22, 2013
Publication Date
January 1, 2004
Subject Category
Nonmetallic Materials
Meeting Information
Meeting: Mirror Technology Days 2004
Location: Huntsville, AL
Country: United States
Start Date: August 17, 2004
End Date: August 19, 2004
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.

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