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    METHOD OF FABRICATING TUNGSTEN SCANDATE NANO-COMPOSITE POWDER FOR CATHODES
    72.
    发明申请
    METHOD OF FABRICATING TUNGSTEN SCANDATE NANO-COMPOSITE POWDER FOR CATHODES 审中-公开
    钨酸盐纳米复合粉末制作方法

    公开(公告)号：WO2016130580A1

    公开(公告)日：2016-08-18

    申请号：PCT/US2016/017198

    申请日：2016-02-09

    Applicant: THE REGENTS OF THE UNIVERSITY OF CALIFORNIA

    Inventor： LUHMANN, Neville, Jr. ,  SOEKLAND, Gordon ,  GAMZINA, Diana ,  LI, Na

    IPC: H01J1/14 ,  H01J1/28 ,  H01J1/142

    CPC classification number: H01J1/146 ,  C01G41/006 ,  C01P2004/64 ,  C01P2006/40 ,  C04B35/50 ,  C04B35/624 ,  C04B35/6261 ,  C04B35/62655 ,  C04B35/6268 ,  C04B35/64 ,  C04B2235/3208 ,  C04B2235/3215 ,  C04B2235/3222 ,  C04B2235/3224 ,  C04B2235/326 ,  C04B2235/5454 ,  C04B2235/96 ,  H01J1/142 ,  H01J9/04

    Abstract: Methods for fabricating refractory metal scandate nanocomposite powders with homogeneous microstructured refractory metal grains and a uniform nanosized dispersion of scandia are provided. The powders prepared by the sol-gel methods have a spherical morphology, a narrow distribution of particle sizes and a very uniform dispersion of nanosized scandia particles joined to the tungsten grains. The powder particle sizes can range from nanometers to micrometers. The powders can be pressed into porous cathode structures that can be impregnated with emissive materials to produce high current density and long life cathodes for high-power terahertz vacuum electron devices. The sol-gel fabrication methods allow control over the materials, particle size, particle composition and pore size and distribution of the cathode structure by manipulation of the process parameters.

    Abstract translation: 提供了具有均质微结构难熔金属颗粒的均匀纳米尺度分散体的难熔金属屑状纳米复合材料粉末的制备方法。 通过溶胶 - 凝胶法制备的粉末具有球形形态，粒度分布窄，并且与钨颗粒接合的纳米尺度的颗粒分散体非常均匀。 粉末粒度范围可以从纳米到微米。 粉末可以压制成可以用发射材料浸渍的多孔阴极结构，以产生高功率太赫兹真空电子器件的高电流密度和长寿命的阴极。 溶胶 - 凝胶制造方法允许通过操纵工艺参数来控制材料，粒度，颗粒组成和孔径以及阴极结构的分布。

    Cathode ray tube comprising a cathode of a composite material
    76.
    发明授权
    Cathode ray tube comprising a cathode of a composite material 有权
    阴极射线管包括复合材料的阴极

    公开(公告)号：US06833659B2

    公开(公告)日：2004-12-21

    申请号：US09954656

    申请日：2001-09-18

    Applicant: Georg Friedrich Gaertner ,  Petrus Arthur Marie Van Der Heide ,  Wyndham Michael Johnstone

    Inventor： Georg Friedrich Gaertner ,  Petrus Arthur Marie Van Der Heide ,  Wyndham Michael Johnstone

    IPC: H01J114

    CPC classification number: H01J1/142

    Abstract: A cathode ray tube provided with at least one oxide cathode comprising a cathode carrier with a cathode base of a cathode metal and a cathode coating of an electron-emitting material containing a particle-particle composite material of oxide particles of an alkaline earth oxide selected from the group formed by the oxides of calcium, strontium and barium, and oxide particles having a first grain size distribution of an oxide selected from the group formed by the oxides of scandium, yttrium and the lanthanoids, and oxide particles having a second grain size distribution of an oxide selected from the group formed by the oxides of scandium, yttrium and the lanthanoids. The invention also relates to an oxide cathode.

    Abstract translation: 具有至少一个氧化物阴极的阴极射线管包括具有阴极金属阴极基体的阴极载体和含有选自以下的碱土金属氧化物颗粒的颗粒 - 复合材料的电子发射材料的阴极涂层： 由钙，锶和钡的氧化物形成的基团，以及选自由钪，钇和镧系元素的氧化物形成的氧化物的第一粒度分布的氧化物粒子和具有第二粒度分布的氧化物粒子 的选自由钪，钇和镧系元素的氧化物形成的氧化物的氧化物。 本发明还涉及氧化物阴极。

    Oxide cathode for an electron gun, having a denser and thinner emissive zone
    77.
    发明申请
    Oxide cathode for an electron gun, having a denser and thinner emissive zone 失效
    用于电子枪的氧化物阴极，具有更致密和更薄的发射区

    公开(公告)号：US20030201705A1

    公开(公告)日：2003-10-30

    申请号：US10421591

    申请日：2003-04-23

    Inventor： Jean-Luc Ricaud ,  Gerard Proudhon

    IPC: H01J001/14 ,  H01J019/14

    CPC classification number: H01J1/142

    Abstract: Cathode comprising a substrate (2) supporting a cathode emissive coating, comprising what is called an emissive central zone (12) and what is called a nonemissive peripheral zone (11); according to the invention: the average density and the emissive zone (12) is greater than that in said nonemissive zone (11), the average thickness in the emissive zone (12) is less than that in the nonemissive zone (11). In this way it is possible to significantly limit the drift in cut-off voltage, while still maintaining good maximum emission performance in DC mode and in pulse mode.

    Abstract translation: 阴极包括支撑阴极发射涂层的衬底（2），包括所谓的发射中心区（12）和所谓的非发射周边区（11）; 根据本发明：平均密度和发射区（12）大于所述非发射区（11）中的平均密度和发射区（12），发射区（12）中的平均厚度小于非发射区（11）中的平均密度。 以这种方式，可以显着地限制截止电压的漂移，同时在DC模式和脉冲模式下仍保持良好的最大发射性能。

    Low work function materials for microminiature energy conversion and recovery applications
    78.
    发明授权
    Low work function materials for microminiature energy conversion and recovery applications 有权
    用于微型能量转换和恢复应用的低功函数材料

    公开(公告)号：US06563256B1

    公开(公告)日：2003-05-13

    申请号：US09257336

    申请日：1999-02-25

    Applicant: Kevin R. Zavadil ,  Judith A. Ruffner ,  Donald B. King

    Inventor： Kevin R. Zavadil ,  Judith A. Ruffner ,  Donald B. King

    IPC: H01K104

    CPC classification number: H01J1/142

    Abstract: Low work function materials are disclosed together with methods for their manufacture and integration with electrodes used in thermionic conversion applications (specifically microminiature thermionic conversion applications). The materials include a mixed oxide system and metal in a compositionally modulated structure comprised of localized discontinuous structures of material that are deposited using techniques suited to IC manufacture, such as rf sputtering or CVD. The structures, which can include layers are then heated to coalescence yielding a thin film that is both durable and capable of electron emission under thermionic conversion conditions used for microminiature thermionic converters. Using the principles of the invention, thin film electrodes (emitters and collectors) required for microconverter technology are manufactured using a single process deposition so as to allow for full fabrication integration consistent with batch processing, and tailoring of emission/collection properties. In the preferred embodiment, the individual layers include mixed BaSrCaO, scandium oxide and tungsten.

    Abstract translation: 公开了低功函数材料及其与用于热离子转换应用（特别是微型热离子转换应用）中的电极的制造和集成的方法。 这些材料包括混合氧化物系统和组成调制结构中的金属，其由使用适合于IC制造的技术例如射频溅射或CVD沉积的材料的局部不连续结构组成。 然后可以包括层的结构被加热到聚结，产生在用于微型热离子转换器的热离子转化条件下既耐用又能够电子发射的薄膜。 使用本发明的原理，使用单一工艺沉积来制造微转换器技术所需的薄膜电极（发射器和集电器），以便允许完全制造整合与批量处理一致，并且定制发射/收集特性。 在优选实施例中，各层包括混合的BaSrCaO，氧化钪和钨。

    Cathode-ray tube having oxide cathode and method for producing the same
    79.
    发明授权
    Cathode-ray tube having oxide cathode and method for producing the same 失效
    具有氧化物阴极的阴极射线管及其制造方法

    公开(公告)号：US06376976B1

    公开(公告)日：2002-04-23

    申请号：US09462071

    申请日：2000-01-05

    Applicant: Kiyoshi Saitoh ,  Ryo Suzuki ,  Hiroshi Yamaguchi ,  Takashi Shinjo ,  Hiroyuki Teramoto ,  Takuya Ohira

    Inventor： Kiyoshi Saitoh ,  Ryo Suzuki ,  Hiroshi Yamaguchi ,  Takashi Shinjo ,  Hiroyuki Teramoto ,  Takuya Ohira

    IPC: H01J114

    CPC classification number: H01J9/042 ,  H01J1/142 ,  H01J1/20 ,  H01J9/02

    Abstract: It is an object to obtain a cathode ray tube having a high resolution without decreasing electron emission property. Surface of a cathode was leveled by heating during forming a vacuum in order to oxidize a carbonate salt to an oxide as an electron emissive material, after applying a paste for printing on a metal substrate by screen printing, drying the same, and incorporating an oxide cathode in a cathode ray tube, the paste having a mixture of needle-like particles of the first group and bulk particles of the second group incorporated as an alkaline earth metal carbonate forming an electron emissive material layer.

    Abstract translation: 本发明的目的是获得具有高分辨率而不降低电子发射性能的阴极射线管。阴极表面在形成真空期间通过加热而平整，以便在施加之后将碳酸盐氧化为氧化物作为电子发射材料 用于通过丝网印刷在金属基材上印刷的浆料，将其干燥，并将氧化物阴极并入阴极射线管中，将具有第一组的针状颗粒和第二组的主体颗粒的混合物的浆料作为 形成电子发射材料层的碱土金属碳酸盐。

    Two-layer cathode for electron gun
    80.
    发明授权
    Two-layer cathode for electron gun 失效
    电子枪用双层阴极

    公开(公告)号：US06362563B1

    公开(公告)日：2002-03-26

    申请号：US09412962

    申请日：1999-10-05

    Applicant: Kuo-Ching Chou ,  Shu-Hsien Lee ,  Chin-Fu Tsai

    Inventor： Kuo-Ching Chou ,  Shu-Hsien Lee ,  Chin-Fu Tsai

    IPC: H01J114

    CPC classification number: H01J1/142 ,  H01J1/28

    Abstract: A cathode for use in an electron gun includes a base metal comprising Ni as a principal component and a two-layer electron emissive material disposed on the base metal. The inner layer is comprised of an alkaline earth metal oxide and 1-30 wt. % W and may further include 0.1-5 wt. % of a rare earth metal oxide. The outer layer is comprised of an alkaline earth metal oxide and may further include 0.1-5 wt. % of a rare earth metal oxide. The outer electron emissive layer provides stability for the cathode. In the degassing and activation process, W and Ni react at high temperatures to form a Ni4W fine crystal structure. An intermediate layer, such as Ba2SiO4, is dispersed in the Ni4W fine crystal structure in operation. Free barium is produced in reactions between the various cathode components to provide a high current density for the cathode. The normalized electron emission current value of the cathode does not decrease with use, even over extended periods of operation. While W has heretofore been used as a reducing agent in impregnating cathodes as well as in the base metal, it has not heretofore been used in an outer layer of a cathode.

    Abstract translation: 用于电子枪的阴极包括以Ni作为主要成分的基体金属和设置在母材上的双层电子发射材料。 内层由碱土金属氧化物和1-30wt。 ％W，并且还可以包括0.1-5wt。 ％的稀土金属氧化物。 外层由碱土金属氧化物组成，并且还可以包含0.1-5wt。 ％的稀土金属氧化物。 外部电子发射层为阴极提供稳定性。 在脱气和活化过程中，W和Ni在高温下反应形成Ni4W微晶结构。 中间层如Ba2SiO4在运行中分散在Ni4W细晶结构中。 在各种阴极组件之间的反应中产生游离的钡，以为阴极提供高电流密度。 阴极的归一化电子发射电流值即使在长时间的运行中也不会随着使用而减少。 尽管迄今为止W已经用作浸渍阴极以及贱金属中的还原剂，但是迄今为止还没有用于阴极的外层。

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