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    Thermionic cathode having an embedded grid, process for its fabrication, and high frequency electron tubes using such a cathode
    1.
    发明授权
    Thermionic cathode having an embedded grid, process for its fabrication, and high frequency electron tubes using such a cathode 失效
    具有嵌入式栅格的热电阴极，其制造方法以及使用这种阴极的高频电子管

    公开(公告)号：US4302702A

    公开(公告)日：1981-11-24

    申请号：US904240

    申请日：1978-05-09

    申请人： Jean Montgaillard ,  Arvind Shroff

    发明人： Jean Montgaillard ,  Arvind Shroff

    IPC分类号： H01J1/28 ,  H01J9/04 ,  H01J23/04 ,  H01J1/46 ,  H01J17/04 ,  H01J19/38 ,  H01J21/10

    CPC分类号： H01J23/04 ,  H01J1/28 ,  H01J9/04

    摘要： The invention relates to metal oxide activated porous tungsten cathodes and methods of their manufacture. A cathode 1 of porous tungsten activated by metal oxides is mounted on a housing 2 which has a heating filament 3. On the outer face of the cathode there is a pattern or grid of pure tungsten (preferably formed by a chemical vapor deposition of WCl.sub.6 or WF.sub.6) of crystalline material the outer face of which has an orientation in the (100) or (110) plane and is parallel to the surface of the cathode. The invention will find particular use in the cathode guns of high frequency tubes such as traveling wave tubes and klystrons.

    摘要翻译： 本发明涉及金属氧化物活化的多孔钨阴极及其制造方法。 由金属氧化物活化的多孔钨的阴极1安装在具有加热丝3的壳体2上。在阴极的外表面上有纯钨的图案或格栅（优选通过化学气相沉积WCl6或 WF6），其外表面在（100）或（110）平面中具有取向并且平行于阴极的表面。 本发明将特别用于高频管如行波管和速调管的阴极枪。