Actions for Oxidation-resistant reflective surfaces for solar dynamic power generation in near Earth orbit

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Oxidation-resistant reflective surfaces for solar dynamic power generation in near Earth orbit

Author
Mgf2, Sio2, Al2o3, and si3n4, we
Published
JAN 1, 1986.
Physical Description
1 electronic document
Additional Creators
Gulino, D. A.
Online Version

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Unclassified, Unlimited, Publicly available.
Free-to-read Unrestricted online access
Summary
Reflective surfaces for space station power generation systems are required to withstand the atomic oxygen-dominated environment of near Earth orbit. Thin films of platinum and rhodium, which are corrosion resistant reflective metals, have been deposited by ion beam sputter deposition onto various substrate materials. Solar reflectances were then measured as a function of time of exposure to a RF-generated air plasma. Similarly, various protective coating materials, including MgF2, SiO2, Al2O3, and Si3N4, were deposited onto silver-coated substrates and then exposed to the plasma. Analysis of the films both before and after exposure by both ESCA and Auger spectroscopy was also performed. The results indicate that Pt and Rh do not suffer any loss in reflectance over the duration of the tests. Also, each of the coating materials survived the plasma environment. The ESCA and Auger analyses are discussed as well.
Other Subject(s)
Collection
NASA Technical Reports Server (NTRS) Collection.
Note
Document ID: 19870001527.
Accession ID: 87N10960.
NASA-TM-88865.
E-3268.
NAS 1.15:88865.
Terms of Use and Reproduction
No Copyright.
View MARC record | catkey: 15701484