Anti-irradiation Performance of Al–Si–Zn–O Compound Coating on Kapton/Al Second Surface Mirror
Abstract
An Al–Si–Zn–O compound film was prepared on the surface of Kapton/Al second surface mirror by hydrothermal growth and sol-gel methods. The microstructure, composition, optical and thermal performances of the coatings before and after irradiation were investigated compared to the unprotected surfaces. It was shown that the compound coating had a structure of AZO particles coated by continuously distributed amorphous SiO2 and displayed denser and smoother. With this compound coating the resistivity of Kapton/Al second surface mirror to space proton and electron radiation was greatly improved, while the optical and thermal performances of the protective coating degraded much less than that of the unprotected coating.
Keywords
Thermal coating Protective film Space radiation Simulation experimentNotes
Acknowledgements
This work was financially supported by the Shanghai Sailing Program (Grant No. 17YF1418300).
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