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    TUNGSTEN CATHODE MATERIAL
    35.
    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

    Applicant: Akira Matsuo ,  Yasutsugu Ueno ,  Yusuke Kai

    Inventor： Akira Matsuo ,  Yasutsugu Ueno ,  Yusuke Kai

    IPC: H01B1/02

    CPC classification number: H01B1/02 ,  B22F3/045 ,  B22F3/15 ,  B23K35/0205 ,  B23K35/0211 ,  B23K35/327 ,  C22C1/045 ,  C22C27/04 ,  H01J1/146 ,  H01J61/0735

    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。

    CATHODE COMPOSED OF MATERIALS WITH DIFFERENT ELECTRON WORKS FUNCTIONS
    37.
    发明申请
    CATHODE COMPOSED OF MATERIALS WITH DIFFERENT ELECTRON WORKS FUNCTIONS 审中-公开
    具有不同电子工作功能的材料组成的阴极

    公开(公告)号：US20090284124A1

    公开(公告)日：2009-11-19

    申请号：US12427865

    申请日：2009-04-22

    Applicant: WOLFGANG KUTSCHERA ,  EBERHARD LENZ ,  ERNST NEUMEIER

    Inventor： WOLFGANG KUTSCHERA ,  EBERHARD LENZ ,  ERNST NEUMEIER

    IPC: H01J1/14

    CPC classification number: H01J1/14 ,  H01J1/144 ,  H01J1/146 ,  H01J1/148 ,  H01J35/06 ,  H01J35/305

    Abstract: A cathode has a thermionic emitter composed of a material that emits electrons upon being heated, and an emission layer, composed of a material that has a lower electron work function than the material of the thermionic emitter, is applied on said thermionic emitter so as to at least partially cover the thermionic emitter. Such a cathode has a high electron emission with simultaneously improved focusing and a longer lifespan.

    Abstract translation: 阴极具有由在加热时发射电子的材料构成的热离子发射体，并且将由具有比热电子发射体的材料更低的电子功函数的材料构成的发射层施加到所述热离子发射极上，以便 至少部分地覆盖热离子发射器。 这种阴极具有高电子发射，同时改善了聚焦并且寿命更长。

    Thermionic emitter
    38.
    发明申请
    Thermionic emitter 审中-公开
    热电子发射器

    公开(公告)号：US20020167258A1

    公开(公告)日：2002-11-14

    申请号：US10113280

    申请日：2002-04-01

    Inventor： Ronald Dittrich ,  Erich Hell ,  Markus Schild

    IPC: H01K001/04 ,  H01J019/06

    CPC classification number: H01J35/305 ,  H01J1/146 ,  H01J35/06

    Abstract: A thermionic emitter for use in an X-ray tube with a rotating cathode, particularly in rotating bulb X-ray tubes, is composed of an alloy of a refractory metal, such as tungsten, with an additive of at least 20 ppm potassium. This emitter material avoids deterioration of the emitter due to grain creep.

    Abstract translation: 用于具有旋转阴极，特别是旋转灯泡X射线管的X射线管的热离子发射器由难熔金属如钨的合金与至少20ppm钾的添加剂组成。 该发射极材料避免了由于晶粒蠕变引起的发射极的劣化。

    Metal cathode and indirectly heated cathode assembly having the same
    39.
    发明申请
    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：US20020153819A1

    公开(公告)日：2002-10-24

    申请号：US10077762

    申请日：2002-02-20

    Inventor： Dong-Kyun Seo ,  Jong-Seo Choi ,  Kyoung-Cheon Son ,  Kyu-Nam Joo ,  Sung-Hwan Moon ,  Yoon-Chang Kim ,  Seung-Kwon Han ,  Bu-Chul Sin

    IPC: H01J001/20

    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。

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