Metal cathode and indirectly heated cathode assembly having the same
    71.
    发明授权
    Metal cathode and indirectly heated cathode assembly having the same 失效
    具有相同的金属阴极和间接加热的阴极组件

    公开(公告)号:US06791251B2

    公开(公告)日:2004-09-14

    申请号:US10077762

    申请日:2002-02-20

    CPC classification number: H01J1/146 H01J1/20

    Abstract: A metal cathode for an electron-emission device, and an indirectly heated cathode assembly employing the metal cathode where the metal cathode is formed of a quaternary alloy including 0.1-20% by weight barium (Ba), 0.1-20% by weight a metallic mobilizer facilitating Ba diffusion, a metal with a difference in atomic radius of at least 0.4 Angstrom from the atomic radius of platinum (Pt) or palladium (Pd), the metal being in the range of 0.01 to 30% by weight, and a balance of at least one of Pt and Pd. The metal cathode has a low operating temperature due to its reduced work function with improved current emission capability. The metal cathode can be used for a longer lifetime at high current density. Therefore, the metal cathode can be used effectively in electron-beam devices, such as a Braun tube or picture tube, satisfying larger size, longer life span, high definition, and high luminance requirements of the devices.

    Abstract translation: 用于电子发射器件的金属阴极和使用金属阴极的间接加热的阴极组件,其中金属阴极由包含0.1-20重量%的钡(Ba),0.1-20重量%的金属 促进Ba扩散的迁移剂,原子半径不同于铂(Pt)或钯(Pd)的原子半径至少0.4埃的金属,金属在0.01至30重量%的范围内,余量 的Pt和Pd中的至少一种。 金属阴极具有低的工作温度,由于功率降低,电流发射能力得到改善。 金属阴极可以在高电流密度下使用更长的寿命。 因此,金属阴极可以有效地用于诸如布朗管或显像管的电子束器件中,满足更大尺寸,更长寿命,高清晰度和高亮度要求的器件。

    Cathode material for electron beam apparatus
    72.
    发明申请
    Cathode material for electron beam apparatus 失效
    电子束装置用阴极材料

    公开(公告)号:US20010009348A1

    公开(公告)日:2001-07-26

    申请号:US09756865

    申请日:2001-01-10

    CPC classification number: H01J1/20 H01J1/146

    Abstract: The present invention provides a cathode material for an electron beam device. The cathode material is characterized by the fact that it includes 0.5-9.0% by weight of a rare earth metal of the cerium group, 0.5-15.0% by weight of tungsten or rhenium or both tungsten and rhenium, 0.5-10% by weight of carbon and the remainder of iridium. The cathode material according to the invention has excellent plasticity, can be easily used for manufacturing an emitter of a small size, has high electron emission power, and has a low operation temperature, thereby having a long lifetime, and it is therefore useful for a cathode material for an electron beam device.

    Abstract translation: 本发明提供了一种用于电子束装置的阴极材料。 阴极材料的特征在于它包括0.5-9.0重量%的铈基稀土金属,0.5-15.0重量%的钨或铼,钨或铼,0.5-10重量%的钨, 碳和铱的剩余部分。 根据本发明的阴极材料具有优异的可塑性,可以容易地用于制造小尺寸的发射体,具有高的电子发射功率,并且具有低的操作温度,从而具有长的使用寿命,因此可用于 用于电子束装置的阴极材料。

    TUNGSTEN CATHODE MATERIAL
    79.
    发明申请
    TUNGSTEN CATHODE MATERIAL 审中-公开
    TUNGSTEN CATHODE材料

    公开(公告)号:US20140017114A1

    公开(公告)日:2014-01-16

    申请号:US14006583

    申请日:2012-03-22

    Abstract: Provided is a cathode material which becomes an alternative material of a cathode material formed of a W—ThO2 alloy and is formed of a tungsten alloy that does not include thorium which is a radioactive element. When particles of a rare earth oxide and tungsten carbide are finely dispersed in a tungsten cathode material used as a discharge cathode material used in TIG, plasma spraying, plasma cutting, electrical discharge machining, discharge lamps and the like, reduction and diffusion of the rare earth oxide are accelerated, and supply of rare earth elements to a cathode surface is ensured, thereby improving discharge characteristics.

    Abstract translation: 本发明提供一种阴极材料,其成为由W-ThO 2合金形成的由不含作为放射性元素的钍的钨合金形成的阴极材料的替代材料。 当稀土氧化物和碳化钨的颗粒细分散在用作TIG,等离子体喷涂,等离子切割,放电加工,放电灯等中的放电阴极材料的钨阴极材料中时,罕见的减少和扩散 地球氧化物被加速,并且确保向阴极表面供应稀土元素,从而改善放电特性。

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