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随着各种特殊电真空器件和电子束设备的发展,要求阴极能适应相应的环境。如密封油膜光阀管,就需要能抵抗油蒸汽中毒的阴极。国外使用一种含钍的储备式阴极,但钍有放射性污染。我们研制了一种没有放射性污染的镧钨阴极。Albert等人曾发表过这类阴极的发射数据。Gallagher报道过这类阴极抗氧中毒的性能。但迄今,尚未见到这类阴极的其他性能和运用情况的报道。 几年来,我们对镧钨阴极进行了研究,选择了一种新配方,做出了以WC,La,Pt三
With the development of various special electric vacuum devices and electron beam devices, the cathode is required to adapt to the corresponding environment. Such as sealing film valve tube, you need to be able to withstand the poisoning of oil vapor cathode. Foreign use of a thorium-containing storage cathode, but thorium radioactive contamination. We developed a lanthanum tungsten cathode without radioactive contamination. Albert et al. Have published emission data for such cathodes. Gallagher reported on the performance of such cathodes of oxygen poisoning. However, so far, no other reports on the performance and utilization of such cathodes have been observed. Over the past few years, we conducted a study of the lanthanum tungsten cathode, chose a new formula, made of WC, La, Pt three