Accelerated Testing of Thermal Control Coatings Using Synchrotron Radiation and Evaluation of Materials Performance
Accelerated testing of white thermal control coatings was performed using the high intensity UV radiation generated by a synchrotron and resulting in a substantial shortening of test times. The origin of coloration of metal oxides upon UV irradiation has been identified to be most likely a generation of oxygen vacancies connected with the appearance of colour centers in the crystal lattice.
KeywordsAccelerated testing White thermal control coatings Synchrotron
The authors acknowledge the assistance of L. Goossens, Dutch Aero BV Eindhoven, The Netherlands in preparation of the ceramic coatings using a plasma-spray process.
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