Simulated space environmental exposure of optical coatings for spacecraft solar rejection
| Autor: | W Chris Rostel, James D. Barrie, Peter D. Fuqua, Michael J. Meshishnek |
|---|---|
| Rok vydání: | 2002 |
| Předmět: |
Materials science
business.industry Materials Science (miscellaneous) Environmental exposure engineering.material medicine.disease_cause Industrial and Manufacturing Engineering chemistry.chemical_compound Optical coating Optics Coating chemistry engineering medicine Ultraviolet light Optoelectronics Business and International Management Thin film Niobium pentoxide Absorption (electromagnetic radiation) business Ultraviolet |
| Zdroj: | Applied optics. 41(16) |
| ISSN: | 1559-128X |
| Popis: | Dielectric multilayers composed of niobium pentoxide and silicon dioxide, designed for broadband solar rejection, were exposed to a simulated space environment of ultraviolet light and low-energy (10-20-keV) electron radiation. Samples exhibited various degrees of exposure-induced absorption extending from the ultraviolet to the infrared. Processing variations were correlated to damage susceptibility, and methods were identified that produced parts that exhibited no degradation even though the same materials and coating design were used. Coatings prepared under energetic deposition conditions that provided the densest and most moisture-stable coatings exhibited the best stability to the exposure conditions used. |
| Databáze: | OpenAIRE |
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