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我们用HPS—50B型场发射扫描电镜(SEM),REBER-1型俄歇电子能谱仪(AES),PHI-550型ESCA/SAM多功能能谱仪,JSM-U3型电子探针,FD-1型发射式电镜(EEM)和逸出功分布测量技术等,对铝酸盐钡钨阴极和钨酸盐钡钨阴极进行了综合研究。研究了阴极表面结构形貌、表面化学成分、化学态以及发射性能等。实验发现,激活前后,阴极表面元素的组成成分、分布情况和化学态都有明显的变化。激活后,阴极表面粗糙,发射不均匀,发射集中在钨海绵的孔隙及其四周。还发现了铝酸盐阴极激活后,谱线中的钙峰消
We used HPS-50B field emission scanning electron microscope (SEM), REBER-1 Auger electron spectroscopy (AES), PHI-550 ESCA / SAM multifunction spectrometer, JSM-U3 electron probe, FD -1 emission electron microscopy (EEM) and work function distribution measurement techniques, a comprehensive study of barium aluminate barium and tungsten tungstate tungsten cathode. The cathode surface morphology, surface chemical composition, chemical state and emission properties were studied. It was found that the composition, distribution and chemical state of the elements on the surface of cathode changed obviously before and after activation. After activation, the cathode surface is rough, the emission is not uniform, the emission is concentrated in the pores of the tungsten sponge and its surroundings. Also found in the aluminate cathode activation, the peak in the line of calcium consumption