Study of the optical property degradation of white thermal control coatings under high energy electron irradiation

被引：0
|
作者：
Sokolovskiy, Alexey [1 ]
Plis, Elena [2 ]
Hoffmann, Ryan [1 ]
Bengtson, Miles [1 ]
Ferguson, Dale [1 ]
机构：
[1] Air Force Research Laboratory, Albuquerque,NM, United States
[2] Assurance Technology Corporation, Carlisle,MA, United States
来源：
Surface and Coatings Technology | 2022年 / 451卷
关键词：
Coatings - Deterioration - Electron irradiation - Electrons - Optical properties - Thermal variables control;
D O I：
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学科分类号：
摘要：
Thermal control coatings (TCCs) represent a part of the spacecraft thermal control system, which provides a given temperature regime due to its thermo-radiation characteristics. The space-weather induced deterioration of the TCCs' optical properties causes a change in these characteristics. This work presents a comparative study of the optical properties of four TCCs containing white powder-pigments under irradiation with accelerated 90 keV electrons to a maximum fluence of ~1.2 × 1015 cm−2. The diffuse reflection and induced absorption spectra of TCCs were studied before and after electron exposure. Based on the analysis of the main absorption edge of diffuse reflection spectra, a phase composition of the coating pigments is suggested. Finally, the coefficients of the mathematical models describing the kinetic processes of TCCs' optical properties degradation under electron irradiation have been determined. © 2022
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