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Solar Selective Coatings for High Temperature ApplicationsSolar selective coatings are envisioned for use on minisatellites, for applications where solar energy is to be used to power heat engines or to provide thermal energy for remote regions in the interior of the spacecraft. These coatings are designed to have the combined properties of high solar absorptance and low infrared emittance. The coatings must be durable at elevated temperatures. For thermal bus applications, the temperature during operation is likely to be near 100 C. For heat engine applications. the temperature is expected to be much greater. The objective of this work was to screen candidate solar selective coatings for their high temperature durability. Candidate solar selective coatings were composed of molecular mixtures of metal and dielectric, including: nickel and aluminum oxide, titanium and aluminum oxide, and platinum and aluminum oxide. To identify high temperature durability, the solar absorptance and infrared emittance of the candidate coatings were evaluated initially, and after heating to temperatures in the range of 400 C to 700 C. The titanium and aluminum oxide molecular mixture was found to be the most durable.
Document ID
20030014740
Document Type
Reprint (Version printed in journal)
Authors
Jaworske, Donald A. (NASA Glenn Research Center Cleveland, OH United States)
Shumway, Dean A. (Brigham Young Univ. United States)
Date Acquired
September 7, 2013
Publication Date
January 1, 2003
Publication Information
Publication: Space Technology and Applications International Forum-STAIF 2003
ISBN:
Subject Category
Metals and Metallic Materials
Report/Patent Number
CP-654
Distribution Limits
Public
Copyright
Public Use Permitted.

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