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Atomic Oxygen Interactions With FEP Teflon and Silicones on LDEFThe Long Duration Exposure Facility (LDEF) spacecraft has enabled the measurement of the effects of fixed orientation exposure of high fluence atomic oxygen on fluorinated ethylene propylene (FEP Teflon) and silicones. The atomic oxygen erosion yield for the FEP Teflon was found to be 3.64 x 10(exp -25) cm(exp 3)/atom. This erosion yield is significantly higher than that measured from previous low fluence orbital data. The FEP Teflon erosion yield was found to have the same dependence on oxygen arrival angle as Kapton and Mylar. Atomic oxygen interaction with silicon polymers results in the crazing of silicon. Released silicone contaminants were found to darken upon further atomic oxygen exposure.
Document ID
19920015577
Acquisition Source
Legacy CDMS
Document Type
Conference Paper
Authors
Bruce A. Banks
(Cleveland State University Cleveland, Ohio, United States)
Joyce A. Dever
(Lewis Research Center Cleveland, OH, United States)
Linda Gebauer
(Lewis Research Center Cleveland, OH, United States)
Carol M. Hill
(University of Akron Akron, Ohio, United States)
Date Acquired
September 6, 2013
Publication Date
June 2, 1992
Publication Information
Publication: LDEF: 69 Months in Space: First Post-Retrieval Symposium
Publisher: Langley Research Center
Volume: NASA/CP-3134
Issue: Part 2
Issue Publication Date: June 2, 1992
Subject Category
Nonmetallic Materials
Report/Patent Number
N92-24820
Meeting Information
Meeting: LDEF-69 Months in Space: First Post-Retrieval Symposium
Location: Kissimmee, FL
Country: US
Start Date: June 2, 1991
End Date: June 8, 1991
Sponsors: National Aeronautics and Space Administration
Accession Number
92N24820
Distribution Limits
Public
Copyright
Use by or on behalf of the US Gov. Permitted.
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