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1. 发明公开

EP0845797A3 Electron tube cathode 失效
标题翻译： Elektronenröhrenkathode
公开(公告)号：EP0845797A3
公开(公告)日：1999-02-17
申请号：EP97120900.2
申请日：1997-11-28
申请人： MITSUBISHI DENKI KABUSHIKI KAISHA
发明人： Saito, Masato , Teramoto, Hiroyuki , Ohira, Takuya
IPC分类号： H01J1/14
CPC分类号： H01J1/142 , H01J1/26
摘要： An electron tube cathode comprises a base (1) formed mainly of nickel, an alloy layer (4) disposed on the base (1) and including nickel and tungsten having a grain size smaller than that of the base, and an electron emissive material layer (5) deposited on the alloy layer, and including an oxide (6) of an alkaline-earth metal containing at least barium, and a rare earth metal oxide (7) of 0.01 to 25 weight percent and containing at least one of scandium oxide and yttrium oxide. The cathode has a life characteristics improved compared with the prior art, even if operated with a current density of 3 A/cm 2 or more.
摘要翻译：电子管阴极包括主要由镍形成的基体（1），设置在基体（1）上的合金层（4），并且包括具有小于基体的晶粒尺寸的镍和钨以及电子发射材料层（5），并且包含至少含有钡的碱土金属的氧化物（6）和0.01至25重量％的稀土金属氧化物（7），并且包含至少一种氧化钪和氧化钇。即使以3A / cm 2以上的电流密度进行操作，与现有技术相比，阴极的寿命特性得到改善。

2. 发明公开

EP0845797A2 Electron tube cathode 失效
标题翻译：电子管阴极
公开(公告)号：EP0845797A2
公开(公告)日：1998-06-03
申请号：EP97120900.2
申请日：1997-11-28
申请人： MITSUBISHI DENKI KABUSHIKI KAISHA
发明人： Saito, Masato , Teramoto, Hiroyuki , Ohira, Takuya
IPC分类号： H01J1/14
CPC分类号： H01J1/142 , H01J1/26
摘要： An electron tube cathode comprises a base (1) formed mainly of nickel, an alloy layer (4) disposed on the base (1) and including nickel and tungsten having a grain size smaller than that of the base, and an electron emissive material layer (5) deposited on the alloy layer, and including an oxide (6) of an alkaline-earth metal containing at least barium, and a rare earth metal oxide (7) of 0.01 to 25 weight percent and containing at least one of scandium oxide and yttrium oxide. The cathode has a life characteristics improved compared with the prior art, even if operated with a current density of 3 A/cm 2 or more.

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