论文标题
用于空间应用的银色镜堆的环境降解的高级保护
Advanced protection against environmental degradation of silver mirror stacks for space application
论文作者
论文摘要
在发射之前，保护银镜堆栈免受环境降解，对于空间应用至关重要。在此，我们报告了一项对SIO2和AL2O3涂层提供的空间望远镜的银色镜堆堆栈的先进保护的比较研究。通过在参考二氧化硅底物上进行光学应用和表面预处理的SIC底物，将模型的银堆样品沉积在参考二氧化硅基板上。在干燥和更严重的潮湿条件下进行加速衰老。将光学显微照片观测值，次级离子质谱法（TOF-SIMS）和反射率测量结果组合在一起，以相对研究降解的影响。结果表明，在可比的测试条件下，氧化堆积的堆栈加速衰老的降解动力学较低。
Protection of silver mirror stacks from environmental degradation before launching is crucial for space applications. Hereby, we report a comparative study of the advanced protection of silver mirror stacks for space telescopes provided by SiO2 and Al2O3 coatings in conditions of accelerated aging by sulfidation. The model silver stack samples were deposited by cathodic magnetron sputtering on a reference silica substrate for optical applications and a surface-pretreated SiC substrate. Accelerated aging was performed in dry and more severe wet conditions. Optical micrographic observations, surface and interface analysis by Time-of Flight Secondary Ion Mass Spectrometry (ToF-SIMS) and reflectivity measurements were combined to comparatively study the effects of degradation. The results show a lower kinetics of degradation by accelerated aging of the stacks protected by the alumina coating in comparable test conditions.
