On the Radiation Stability of BaSO₄ Pigment Modified with SiO₂ Nanoparticles and Applied for Spacecraft Thermal Control Coatings

Abstract:

The authors investigated the effect of a high-temperature modification with SiO₂ nanoparticles on the optical properties and radiation stability of BaSO₄ powders. The modification leads to insignificant alteration in the reflecting capacity within the UV, visible, and near-IR spectral regions. Appending SiO₂ nanoparticles with a concentration of up to 10 wt.% results in the increasing radiation stability of BaSO₄ powders. The maximum effect was obtained due to the decreasing intensity of the absorption bands at 270-280, 375-395, 440-460, 500-600, 700, and 950 nm at a nanoparticle concentration of 3 wt.%.

• Periodical: Defect and Diffusion Forum (Volume 386)
• Pages: 277-282
• DOI: https://doi.org/10.4028/www.scientific.net/DDF.386.277
• Online since: September 2018
• Authors: Mikhail M. Mikhailov*, Vitaly V. Neshchimenko, Semyon A. Yuryev, Anatoly V. Grigorevsky, Alexey A. Lovitskiy, Ilya S. Vashchenkov
• Keywords: Barium Sulfate, Modification, Nanoparticle, Optical Properties, Radiation Stability, Zirconia

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