Vacuum electron tube having an oxide cathode comprising chromium
reducing agent
    81.
    发明授权
    Vacuum electron tube having an oxide cathode comprising chromium reducing agent 失效
    具有包含铬还原剂的氧化物阴极的真空电子管

    公开(公告)号:US4904896A

    公开(公告)日:1990-02-27

    申请号:US675226

    申请日:1984-11-27

    CPC classification number: H01J1/26 H01J1/142

    Abstract: In a vacuum electron tube, a novel oxide cathode comprising a metal substrate, means for heating said substrate to its operating temperature, and a layer of alkaline-earth-metal oxide on the substrate. The substrate is essentially free from silicon and contains operative concentrations greater than 1.0 weight % of chromium metal for progressively migrating into the oxide layer and reducing the oxide to yield alkaline-earth-metal.

    Abstract translation: 在真空电子管中,包括金属基板的新型氧化物阴极,用于将基板加热至其工作温度的装置和基底上的碱土金属氧化物层。 基材基本上不含硅,并且含有大于1.0重量%的铬金属的操作浓度,用于逐渐迁移到氧化物层中并还原氧化物以产生碱土金属。

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