摘要
扼要地阐述了孔度可控扩散式阴极的发展与特性。着重介绍Ｗ＋２５ｗｔ％Ｒｅ合金箔孔度可控扩散式阴极工作范围宽（８５０～１１００℃），发射电流密度大（３～５０Ａ／ｃｍ２）、蒸发少，抗中毒，耐轰击，长寿命的特点。
Developoment and features of a controlled porosity dispenser cathode are described briefly in this paper. The emphasis is put on introducing W + 25wt% Re alloying film controlled porosity dispenser cathode. Its properties are a wide range operation (850￣ 1 100℃ ), a great emission current densities (3-50A/cm2), less evaPOration rate, more resistant to poisoning more strength against bombardment and longevity.
出处
《真空电子技术》
北大核心
1994年第6期41-44,共4页
Vacuum Electronics
关键词
扩散式
阴极
孔度可控
电流密度
电真空器件
Dispenser cathode, Controlled porosity, Great emission current densities
