电子辐照ITO/F46/Ag热控涂层的电学性能退化及损伤机理
Electrical property degradation and damage mechanism of ITO/F46/Ag thermal control coating under electron irradiation
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摘要: 对ITO/F46/Ag热控涂层进行了电子辐照地面模拟试验，探讨了其表面电阻率随电子辐照注量的退化规律，并借助扫描电镜（SEM）对其表面形貌变化进行了研究。通过SEM分析发现，涂层表面发生了严重的损伤效应，有裂纹、碎片和熔蚀现象出现。对涂层的损伤机理进行了分析，并给出了电子辐照ITO/F46/Ag热控涂层的表面碎裂损伤模型。Abstract: The electron irradiation ground simulation test was conducted on the ITO/F46/Ag thermal control coating. The variation of surface resistivity of the ITO/F46/Ag coating with electron fluence was discussed, and the scanning electron microscope was used to analyze the irradiation effects of electron on the coating’s morphology. It was found that there were severe damages appearing in the ITO/F46/Ag coating, e.g. crack, debris and melt erosion. The damage mechanism of the ITO/F46/Ag thermal control coating under electron irradiation was analyzed, and a surface damage model was proposed.
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Key words:
- thermal control coating /
- electron irradiation /
- electrical property /
- damage mechanism
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