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用光电子能谱(XPS)和扫描电镜(SEM)观测了在模拟原子氧(AO)环境中Ag及在其表面涂覆的有机防护层的表面,研究了表面的形貌和质量损失.结果表明,AO对Ag有较严重的侵蚀作用,使原来光亮的表面失去光泽,变得粗糙;采用环氧树脂、聚胺脂或醇酸树脂作为防护涂层,AO辐照后其表面形貌也发生了较大变化,表明腐蚀严重;采用有机硅作为涂层,被AO侵蚀后其表面形貌的变化甚小,质量损失较小,表明这种涂层具有较明显的防护效果.经AO辐照后有机硅涂层表面生成了致密的氧化硅膜层,对抑制AO的进一步侵蚀具有关键作用.
The surface of organic protective layer coated with Ag and its surface in simulated atomic oxygen (AO) environment was observed by photoelectron spectroscopy (XPS) and scanning electron microscope (SEM), and the morphology and mass loss of the surface were investigated. , AO has a more serious erosion of Ag, so that the original shiny surface luster, become rough; epoxy resin, polyurethane or alkyd resin as a protective coating, AO surface morphology after irradiation also took place A larger change, indicating serious corrosion; the use of organic silicon as a coating, AO surface erosion after the erosion of the changes in the small, less mass loss, indicating that the coating has a more significant protective effect by AO irradiation After the surface of the organic silicon coating generated a dense layer of silicon oxide, to inhibit the further erosion of AO has a key role.