一种高可靠长寿命阴极
A HIGHLY RELIABLE AND LONG LIFE CATHODE
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摘要: 正 空间技术的发展向电子器件提出了高可靠、长寿命的要求,这又使电子器件向阴极提出了同样的要求。在国外,解决的办法是,使用以锆镍或钨锆镍作基金属的氧化物阴极,再加上高水平的造管工艺等措施来保证电子器件的高可靠和长寿命。我们根据当前国内
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关键词:
Abstract: In this paper, a highly reliable and long life cathode is described. The emission cur-rent density of the cathode is higher than 400 mA/cm2 at 730℃, and has a value of 50-70 mA/cm2 at 550℃. The life of the cathode under different conditions is over than 60000 hrs. The result of oxygen poisoning test is also given.
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