Development and characterization of high efficiency metallic reflectors

Details Development and characterization of high efficiency metallic reflectors Development and characterization of high efficiency metallic reflectors

Oct 1989

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1989spie.1118..120v&link_type=abstract

IN: Space optical materials and space qualification of optics; Proceedings of the Meeting, Orlando, FL, Mar. 30, 31, 1989 (A90-4

Physics

Optics

Infrared Reflection, Metal Coatings, Reflectors, Mirrors, Spacecraft Equipment, Thermal Control Coatings

Scientific paper

The present Ag-based reflective coatings are useful in both the visible and the IR, and exhibit not only high optical efficiency but high resistance to both terrestrial storage/prelaunch and space environments. Excellent stability to adhesion, as well as abrasion resistance and aqueous environment corrosion resistance, are demonstrated for Ag protected by a 200-A layer of Al2O3 and an 800-A layer of Ta2O5. The results of thermal shock cycling of up to 1000 cycles in the -45 to +70 C range indicate no deterioration of the coating. The presence of the Al2O3 layer is noted to furnish an excellent barrier to UV degradation.

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