航天器表面材料原子氧防护方法

摘要

原子氧是200～700 km低地球轨道残余大气的主要成分。原子氧具有极强的氧化性，表面材料被原子氧剥蚀而失效是低轨道航天器面临的主要环境威胁之一。空间飞行试验结果表明，几乎所有的有机材料都会被原子氧剥蚀。原子氧防护技术是保证材料或器件在轨性能和寿命的重要手段，不同特征的表面材料需要采用不同的原子氧防护方法。介绍了太阳电池阵材料、热控材料、光学材料等典型材料的原子防护方法，并对硅氧烷防护涂层进行原子氧试验验证。%At altitudes between 200 km and 700 km,atomic oxygen(AO)is the most abundant atmospheric species that,being highly reactive. It is now well established that the interaction between atomic oxygen in the low-Earth-orbit (LEO)space environment and spacecraft at orbital velocities causes severe mass loss from solar array materials,thermal control materials and optical materials,etc. Atomic-Oxygen-Protection technology is important for guarantee materials or components against atomic oxygen. This paper introduced atomic oxygen protection technologies and methods.