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    • 26. 发明授权
    • Electron gun cathode with a metal layer having a recess
    • 具有凹陷的金属层的电子枪阴极
    • US06255764B1
    • 2001-07-03
    • US09298397
    • 1999-04-23
    • Jong-Seo ChoiYoon-Chang KimGyu-Nam Joo
    • Jong-Seo ChoiYoon-Chang KimGyu-Nam Joo
    • H01J1906
    • H01J1/20H01J1/142
    • The present invention relates to a cathode for an electron gun for increasing its life cycle under a high current density load by ensuring a steady diffusion path of reducing component served for generating free radical barium. The present invention discloses a cathode for an electron gun comprising a base metal composed of nickel and at least one kind of reducing component, a metal layer having a recess to enlarge an overall surface area of the metal layer, the metal layer being disposed on the base metal, and an electron emitting layer containing alkaline earth metal oxide including at least barium. The cathode for an electron further comprises a second metal layer disposed on the lower side of the base metal.
    • 本发明涉及一种用于电子枪的阴极,通过确保用于产生自由基钡的还原成分的稳定扩散路径,在高电流密度负载下增加其寿命周期。 本发明公开了一种电子枪用阴极,其特征在于,包括由镍构成的母材和至少一种还原成分,金属层,具有凹部以扩大金属层的整个表面积,金属层设置在 贱金属和含有至少包含钡的碱土金属氧化物的电子发射层。 用于电子的阴极还包括设置在贱金属下侧的第二金属层。