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公开(公告)号：US6124666A
公开(公告)日：2000-09-26
申请号：US979566
申请日：1997-11-26
Applicant: Masato Saito , Hiroyuki Teramoto , Takuya Ohira
Inventor： Masato Saito , Hiroyuki Teramoto , Takuya Ohira
Abstract: An electron tube cathode comprises a base (1) formed mainly of nickel, an alloy layer (4) disposed on the base (1) and including nickel and tungsten having a grain size smaller than that of the base, and an electron emissive material layer (5) deposited on the alloy layer, and including an oxide (6) of an alkaline-earth metal containing at least barium, and a rare earth metal oxide (7) of 0.01 to 25 weight percent and containing at least one of scandium oxide and yttrium oxide. The cathode has a life characteristics improved compared with the prior art, even if operated with a current density of 3 A/cm.sup.2 or more.
Abstract translation: 电子管阴极包括主要由镍形成的基体（1），设置在基底（1）上的合金层（4），并且包括具有小于基底的晶粒尺寸的镍和钨以及电子发射材料层 （5）沉积在合金层上，并且包含至少含有钡的碱土金属的氧化物（6）和0.01至25重量％的稀土金属氧化物（7），并且含有至少一种氧化钪 和氧化钇。 即使以3A / cm 2以上的电流密度进行操作，阴极与现有技术相比寿命特性得到改善。
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公开(公告)号：US6054800A
公开(公告)日：2000-04-25
申请号：US63945
申请日：1998-04-21
Applicant: Gyu-Nam Joo , Jong-Seo Choi , Yoon-Chang Kim
Inventor： Gyu-Nam Joo , Jong-Seo Choi , Yoon-Chang Kim
CPC classification number: H01J1/142
Abstract: The present invention discloses a cathode for an electron gun comprising a base metal mainly composed of nickel and containing one kind of reducing element at least, a metal layer mainly composed of tungsten, tungsten-nickel, or zirconium-tungsten on the upper side of the base metal, and an electron emitting material layer containing alkaline earth metal oxide including barium at least on the upper side of the metal layer. The metal layer is formed by spreading tungsten, tungsten-nickel, or zirconium-tungsten on the base metal and heating it to have particle smaller than that of the base metal, to increase its life cycle under a high current density load by ensuring a diffusion route of reducing element steadily, used for good generation of free radical barium atom.
Abstract translation: 本发明公开了一种电子枪用阴极，其特征在于，包括：主要由镍构成的基体金属和至少含有一种还原元素的金属层，主要由钨，钨 - 镍或锆 - 钨构成的金属层位于 以及至少在金属层的上侧含有包含钡的碱土金属氧化物的电子发射材料层。 金属层通过在基体金属上铺展钨，钨 - 镍或锆 - 钨而形成，并将其加热成具有小于母体金属的颗粒，以通过确保扩散在高电流密度负载下增加其寿命周期 还原元素的路线稳定，用于生成自由基钡原子。
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公开(公告)号：US6051165A
公开(公告)日：2000-04-18
申请号：US258990
申请日：1999-02-26
Applicant: Garth W. Billings
Inventor： Garth W. Billings
IPC: H01B1/06 , H01J1/14 , H01J1/142 , H01J1/144 , H01J1/148 , H01J1/304 , H01B1/02 , H01J1/00 , H01J1/02
CPC classification number: B82Y10/00 , H01B1/06 , H01J1/14 , H01J1/142 , H01J1/144 , H01J1/148 , H01J1/304 , H01J2201/19
Abstract: Electron emission materials consisting of carbides, borides, and oxides, and related mixtures and compounds, of Group IVB metals Hf, Zr, and Ti, Group IIA metals Be, Mg, Ca, Sr, and Ba, and Group IIIB metals Sc, Y, and lanthanides La through Lu are used in electrodes. The electron emission materials include ternary Group IVB-IIIB and IVB-IIA oxides. These electron emission materials are typically contained in a refractory metal matrix formed of tungsten, tantalum, rhenium, and their alloys, but may also be used by themselves. These materials and electrodes have high melting points, low vapor pressures, low work functions, high electrical and thermal conductivity, and high thermionic electron emission and field emission properties.
Abstract translation: 由ⅣB族金属Hf，Zr和Ti，IIA族金属Be，Mg，Ca，Sr和Ba以及IIIB族金属组成的由碳化物，硼化物和氧化物组成的电子发射材料及相关混合物和化合物Sc，Y ，镧系元素La-Lu用于电极。 电子发射材料包括IVB-IIIB族和IVB-IIA族三元氧化物。 这些电子发射材料通常包含在由钨，钽，铼及其合金形成的难熔金属基体中，但也可以自己使用。 这些材料和电极具有高熔点，低蒸汽压力，低功函数，高导热性和高热电子发射和场发射性能。
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公开(公告)号：US5347194A
公开(公告)日：1994-09-13
申请号：US51255
申请日：1993-04-21
Applicant: Petrus J. A. M. Derks
Inventor： Petrus J. A. M. Derks
CPC classification number: H01J1/142
Abstract: The initial emission and the lifetime of oxide cathodes are considerably improved by adding small quantities of rare earth metals (10-500 ppm).
Abstract translation: 通过加入少量稀土金属（10-500ppm），氧化物阴极的初始发射和寿命显着提高。
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公开(公告)号：US5126622A
公开(公告)日：1992-06-30
申请号：US610056
申请日：1990-11-07
Applicant: Jong-in Jeong , Jong-seo Choi , Hwan-cheol No , Kyu-nam Ju
Inventor： Jong-in Jeong , Jong-seo Choi , Hwan-cheol No , Kyu-nam Ju
Abstract: A dispenser cathode comprises an electron emissive material including at least one selected from the group consisting of Ba and Ba oxide, a porous metal base body having a plurality of diffusing cavities and positioned on the electron emissive material and an alloy thin film layer consisting of scandium tungstate and tungsten which is disposed between the electron emissive material and the porous metal base body. Instead of the alloy thin film, a pellet containing scandium tungstate may be interposed between said electron emissive material and the porous metal base body. The activation aging time of the dispenser cathode of the present invention is greatly shortened as compared with the conventional dispenser cathode, and the damage of Sc by ion bombardment is prevented, and thus the stable thermoelectron emission can be obtained.
Abstract translation: 分配器阴极包括电子发射材料，其包括选自由Ba和Ba氧化物组成的组中的至少一种，具有多个扩散腔并位于电子发射材料上的多孔金属基体和由钪组成的合金薄膜层 钨酸盐和钨，其设置在电子发射材料和多孔金属基体之间。 代替合金薄膜，可以在所述电子发射材料和多孔金属基体之间插入含有钨酸钪的颗粒。 与传统的分配器阴极相比，本发明的分配器阴极的激活老化时间大大缩短，并且防止了通过离子轰击的Sc的损伤，从而可以获得稳定的热电子发射。
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Patent Agency Ranking
公开(公告)号：US5015497A
公开(公告)日：1991-05-14
申请号：US377516
申请日：1989-07-10
Applicant: Kinjiro Sano , Toyokazu Kamata , Keiji Fukuyama , Masato Saito , Keiji Watanabe
Inventor： Kinjiro Sano , Toyokazu Kamata , Keiji Fukuyama , Masato Saito , Keiji Watanabe
Abstract: A cathode for an electron tube in accordance with the present invention comprises: a base (2) containing not only nickel as a major element but also a reducing agent; a layer (3) of an electron-emissive substance which is applied to the base (2) and contains not only an alkaline earth metal oxide as a principal component but also a scandium oxide; and a heater for heating the layer (3).
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公开(公告)号：US4924137A
公开(公告)日：1990-05-08
申请号：US307709
申请日：1989-02-08
Applicant: Keiji Watanabe , Keiji Fukuyama , Masako Ishida , Ryo Suzuki , Masato Saito
Inventor： Keiji Watanabe , Keiji Fukuyama , Masako Ishida , Ryo Suzuki , Masato Saito
IPC: H01J1/142
CPC classification number: H01J1/142
Abstract: An oxide-coated cathode for an electron tube comprises a layer (2) of an electron-emissive substance. This layer (2) contains: an alkaline earth metal oxide as a principal component containing at least Ba; an oxide of Sc; and at least one heat-resisting oxide selected from the group consisting of oxides of Al, Si, Ta, V, Cr, Fe, Zr, Nb, Hf, Ta, Mo and W.
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公开(公告)号：US4369392A
公开(公告)日：1983-01-18
申请号：US187701
申请日：1980-09-16
Applicant: Sadayoshi Hotta , Masanori Watanabe
Inventor： Sadayoshi Hotta , Masanori Watanabe
CPC classification number: H01J1/142
Abstract: An oxide-coated cathode used for the electron tubes such as cathode ray tubes and camera tubes, comprising as the base a sintered product principally composed of an alkaline earth metal compound and a high-melting-point metal and having high heat conductivity and low specific resistance, said sintered product being either used singly or layered on a high-melting-point metal body containing a reducible element or elements as impurity, and an oxide cathode material coated on said base, and a method of producing such oxide-coated cathode.
Abstract translation: 用于阴极射线管和照相机管等电子管的氧化物被覆阴极，其特征在于，以碱土金属化合物和高熔点金属为主要成分，具有高导热性，低特异性的烧结体 电阻，所述烧结产品单独使用或分层在含有可还原元素或杂质的元素的高熔点金属体上，以及涂覆在所述基底上的氧化物阴极材料，以及制备这种氧化物涂覆的阴极的方法。
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39.发明授权Method of manufacturing oxide cathodes and cathodes manufactured by such methods 失效通过这些方法制造氧化物阴极和阴极的方法
公开(公告)号：US3088851A
公开(公告)日：1963-05-07
申请号：US4735760
申请日：1960-08-04
Applicant: PHILIPS CORP
IPC: H01J1/142
CPC classification number: H01J1/142 , Y10T428/31678
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公开(公告)号：US2559530A
公开(公告)日：1951-07-03
申请号：US55395944
申请日：1944-09-13
Applicant: RAYTHEON MFG CO
Inventor： BECKER CARL W
IPC: H01J1/142
CPC classification number: H01J1/142
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