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    Thermion emitting oxide cathode and method for making the same
    52.
    发明授权
    Thermion emitting oxide cathode and method for making the same 失效
    发热氧化阴极及其制造方法

    公开(公告)号：US5684357A

    公开(公告)日：1997-11-04

    申请号：US569706

    申请日：1995-12-08

    Applicant: Kwang-Min Lee ,  Kyu-Nam Joo ,  Jong-Seo Choi ,  Geun-Bae Kim ,  Kwi-Seuk Choi ,  Sang-Won Lee

    Inventor： Kwang-Min Lee ,  Kyu-Nam Joo ,  Jong-Seo Choi ,  Geun-Bae Kim ,  Kwi-Seuk Choi ,  Sang-Won Lee

    IPC: H01J9/04 ,  C01G23/00 ,  H01J1/14 ,  H01J1/142 ,  H01J1/20

    CPC classification number: C01G23/006 ,  H01J1/142

    Abstract: A thermion emitting oxide cathode comprising a metal cap and a cathode sleeve, the metal cap being coated with a thermion emitting material layer containing a barium-based alkaline earth metal, wherein the thermion emitting material layer is made of a titanate of the barium-based alkaline earth metal. The thermion emitting oxide cathode is made by mixing a titanium tetrachloride (TiCl.sub.4) with an aqueous solution of barium-strontium-calcium dichloride �(Ba--Sr--Ca)Cl.sub.2 !, dropping the mixture into an oxalate solution of 80.degree. C., thereby precipitating a barium-strontium-calcium titanate hydrate �(Ba--Sr--Ca)TiO(C.sub.2 O.sub.4).sub.2.4H.sub.2 O!, and treating the precipitated barium-strontium-calcium titanate hydrate at a temperature of 500.degree. to 700.degree. C. to remove a plurality of water molecules, thereby producing a suspension of barium-strontium-calcium titanate �(Ba--Sr--Ca)TiO.sub.3 !.

    Abstract translation: 一种包含金属盖和阴极套的热发射氧化物阴极，金属帽涂覆有含有钡基碱土金属的热离子发射材料层，其中热电子发射材料层由钡基碱金属的钛酸盐 碱土金属。 通过将四氯化钛（TiCl 4）与二氯化锶 - 二氯化钙[（Ba-Sr-Ca）Cl 2]的水溶液混合，将该混合物倒入80℃的草酸盐溶液中， 从而使钡 - 锶 - 钛酸钙水合物[（Ba-Sr-Ca）TiO（C2O4）·2.4H2O]析出，并在500〜700℃的温度下处理沉淀的钛酸钡 - 锶 - 钛酸钙水合物，以除去 多个水分子，从而产生钛酸锶 - 钛酸钙[（Ba-Sr-Ca）TiO 3]的悬浮液。

    Oxide cathode
    53.
    发明授权
    Oxide cathode 失效
    氧化物阴极

    公开(公告)号：US5519280A

    公开(公告)日：1996-05-21

    申请号：US216019

    申请日：1994-03-21

    Applicant: Kyung-cheon Shon ,  Jong-seo Choi ,  Kwi-seok Choi ,  Gyu-nam Ju ,  Sang-won Lee

    Inventor： Kyung-cheon Shon ,  Jong-seo Choi ,  Kwi-seok Choi ,  Gyu-nam Ju ,  Sang-won Lee

    IPC: H01J1/14 ,  H01J1/142 ,  H01J1/20

    CPC classification number: H01J1/142

    Abstract: An oxide cathode is provided including an electron emissive material layer including barium, a metal base, a sleeve and a heater, wherein the electron emissive material layer further includes 0.1 to 20 wt. % of tin or a tin compound, based on the total amount of the electron emissive material, and indium or an indium compound.

    Abstract translation: 提供一种氧化物阴极，其包括包括钡，金属基底，套筒和加热器的电子发射材料层，其中电子发射材料层还包含0.1至20wt。 基于电子发射材料的总量和铟或铟化合物的锡或锡化合物的％。

    Cathode for electron tube
    54.
    发明授权
    Cathode for electron tube 失效
    电子管阴极

    公开(公告)号：US4797593A

    公开(公告)日：1989-01-10

    申请号：US886777

    申请日：1986-07-17

    Applicant: Masato Saito ,  Keiji Fukuyama ,  Masako Ishida ,  Keiji Watanabe ,  Toyokazu Kamata ,  Kinjiro Sano

    Inventor： Masato Saito ,  Keiji Fukuyama ,  Masako Ishida ,  Keiji Watanabe ,  Toyokazu Kamata ,  Kinjiro Sano

    IPC: H01J1/142 ,  H01J1/02

    CPC classification number: H01J1/142

    Abstract: This invention is a cathode of an indirect heated type having improved electron emission characteristics.A cathode for an electron tube in accordance with the present invention comprises: a base containing Ni as a major element; and a layer of an electron-emissive substance formed on the base, this layer comprising not only alkaline earth metal oxide as a principal component containing at least Ba, but also rare earth metal oxide of 0.1 to 20 wt. % or rare earth metal of 0.05 to 15 wt. %.

    Abstract translation: 本发明是具有改善的电子发射特性的间接加热型阴极。 根据本发明的电子管阴极包括：含有Ni作为主要元素的基底; 和形成在基底上的电子发射物质层，该层不仅包含碱土金属氧化物作为至少含有Ba的主要成分，而且还包含0.1-20重量％的稀土金属氧化物。 ％或稀土金属为0.05〜15wt。 ％。

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