摘要
以掺氧化钇的钡钨阴极作为研究对象,利用现代表面分析技术,包括发射式电子显徽镜、扫描电子显微镜、俄歇电子谱仪和高分辨率x射线光电子谱仪等,进行了综合研究,获得了阴极发射性能、表面形貌和表面化学等实验结果,并对实验结果进行了讨论。
A Aluminate dispenser cathode with Y2O3 have been investigated by using modern surface analysis techniques (AES, XPS, SEM and THEM). The Surface topography, Surface chemistry and emission properties of the cathodes activated in situ have been obtained. The experimental results and activation mechanism are also discussed.
关键词
热阴极
掺氧化
钇钡钨
阴极
表面
Thermionic cathode
Aluminate dispenser cathode with Y_2O_3
Surface analysis technique, Cathode surface chemistry
