公开(公告)号：US5348934A

公开(公告)日：1994-09-20

申请号：US756407

申请日：1991-09-09

Applicant: Beverley A. Shaw

Inventor： Beverley A. Shaw

IPC: H01J1/32 ,  H01J23/04 ,  H01J23/05 ,  H01J19/06 ,  H01J25/42 ,  H01L39/12

CPC classification number: H01J1/32 ,  H01J23/04 ,  H01J2223/05 ,  Y10S505/70

Abstract: A cathode for a secondary emission structure comprised of a superconductive material is described. In one embodiment the cathode comprises a layer of a superconductive material such as yttrium barium cupric oxide, or rare earth substituted neodymium cupric oxides. The layer may be bonded to a metal electrode or preferably the cathode consist of a superconductive or conductive oxide. The use of a superconductive material provides a cathode having suitable secondary emission characteristics and, furthermore, which being conductive at room temperatures, as well as, temperatures of operation of the cathode, obviating the need for a use of a very thin film of a secondary emission material.

Abstract translation: 描述了由超导材料构成的二次发射结构的阴极。 在一个实施例中，阴极包括超导材料层，例如钇钡氧化铜或稀土取代的钕氧化铜。 该层可以结合到金属电极，或者优选地，阴极由超导或导电氧化物组成。 使用超导材料提供具有合适的二次发射特性的阴极，此外，其在室温下导电，以及阴极的操作温度，从而避免使用非常薄的次级的薄膜 排放物质。

公开(公告)号：US4518890A

公开(公告)日：1985-05-21

申请号：US456247

申请日：1983-01-06

Applicant: Sadanori Taguchi ,  Toshiyuki Aida ,  Shigehiko Yamamoto ,  Yukio Honda

Inventor： Sadanori Taguchi ,  Toshiyuki Aida ,  Shigehiko Yamamoto ,  Yukio Honda

IPC: H01J1/14 ,  H01J1/28 ,  H01J19/06 ,  H01K1/04

CPC classification number: H01J1/14 ,  H01J1/28

Abstract: An impregnated cathode comprises a porous refractory substrate of refractory material such as tungsten containing at least one of scandium oxide particles and oxide particles containing scandium such as (Al, Sc).sub.2 O.sub.3, and an electron emissive material impregnated into pores of the substrate, and has an operating temperature lower by about 300.degree. C. than that of the conventional impregnated cathode containing no scandium oxide particles, or scandium.

Abstract translation: 浸渍阴极包括耐火材料的多孔耐火基材，例如含有氧化钪颗粒和含有钪的氧化物颗粒如（Al，Sc）2 O 3中的至少一种的钨和浸渍在基材的孔中的电子发射材料，并且具有 操作温度比不含氧化钪颗粒或钪的常规浸渍阴极低约300℃。

公开(公告)号：US4349766A

公开(公告)日：1982-09-14

申请号：US143898

申请日：1980-04-25

Applicant: Hisashi Ando ,  Ko Soeno ,  Hiroshi Sakamoto ,  Akira Misumi ,  Hiroshi Fukushima

Inventor： Hisashi Ando ,  Ko Soeno ,  Hiroshi Sakamoto ,  Akira Misumi ,  Hiroshi Fukushima

IPC: H01J1/14 ,  H01J1/15 ,  H01J19/06 ,  H01K1/04

CPC classification number: H01J1/15

Abstract: A directly heated cathode for electron tube having a stable electron emission characteristic is provided. The cathode comprises a base metal of Ni-W alloy consisting essentially of 20-30% by weight of tungsten, the balance being nickel and incidental impurities, said alloy being free from a reducing agent, and a layer of thermoelectron emission oxides laid directly and baked onto the flat part at the front side of the base metal. The layer of thermoelectron emission oxides is in direct contact with the flat part of the base metal.

Abstract translation: 提供具有稳定的电子发射特性的用于电子管的直接加热阴极。 阴极包括Ni-W合金的贱金属，其基本上由20-30重量％的钨组成，余量为镍和偶然杂质，所述合金不含还原剂，以及直接和 烘烤在贱金属正面的平坦部分上。 热电子发射氧化物层与贱金属的平坦部分直接接触。

公开(公告)号：US4251746A

公开(公告)日：1981-02-17

申请号：US15620

申请日：1979-02-27

Applicant: Takao Kawamura ,  Yukihiro Izumida ,  Hiroshi Fukushima ,  Takeo Takemoto ,  Masaru Nakazawa ,  Tetsuo Kumazawa

Inventor： Takao Kawamura ,  Yukihiro Izumida ,  Hiroshi Fukushima ,  Takeo Takemoto ,  Masaru Nakazawa ,  Tetsuo Kumazawa

IPC: H01J1/15 ,  H01J29/04 ,  H01J1/14 ,  H01J19/06 ,  H01K1/04

CPC classification number: H01J1/15 ,  H01J29/04

Abstract: There is disclosed a direct-heated cathode structure which comprises an insulating substrate; a pair of conductive supporting rods penetrating the substrate in the direction substantially perpendicular to the surface of the substrate and fixed tightly to the substrate; and a conductive member made of a single metal plate and including a first portion which is arranged in a plane spaced apart from the surface of the substrate by a predetermined distance and substantially parallel to the surface of the substrate and is coated with an electron emissive material, second portions which are extended from the first portion in the above-mentioned parallel plane substantially symmetrically with respect to the first portion, third portions which are extended from the end of extension of each of the second portions in the direction substantially perpendicular to the surface of the substrate toward the substrate, and fourth portions which are extended from the ends of the third portions in the direction substantially parallel to the surface of the substrate in the same plane as the third portions and are fixed to the supporting rods in the neighborhood of the end of extension of the fourth portions. Each of the first, second and third portions has a side wall provided along at least a part of the edges of these portions and extending in the direction substantially perpendicular to the surfaces of these portions.

Abstract translation: 公开了一种直接加热的阴极结构，其包括绝缘基板; 一对导电支撑棒，其在基本上垂直于基板的表面的方向上穿透基板，并紧密地固定到基板上; 以及由单个金属板制成并且包括第一部分的导电部件，所述第一部分布置在与所述基板的表面间隔开预定距离并且基本上平行于所述基板的表面的平面中，并且涂覆有电子发射材料 第二部分从上述平行平面中的第一部分相对于第一部分大致对称​​地延伸，第三部分从基本上垂直于表面的方向从每个第二部分的延伸端延伸 基板朝向基板的第四部分，以及从第三部分的端部沿与第三部分相同的平面中的基板的表面的方向基本平行的方向延伸的第四部分，并且固定到邻近的支撑杆 第四部分的延伸端。 第一，第二和第三部分中的每一个具有沿这些部分的边缘的至少一部分设置的侧壁，并且在基本垂直于这些部分的表面的方向上延伸。

公开(公告)号：US4208208A

公开(公告)日：1980-06-17

申请号：US961272

申请日：1978-11-16

Applicant: Akira Misumi ,  Masaharu Kumada

Inventor： Akira Misumi ,  Masaharu Kumada

IPC: H01J1/14 ,  C22C19/03 ,  H01J1/18 ,  H01J1/15 ,  H01J19/06

CPC classification number: H01J1/18 ,  C22C19/03 ,  Y10T428/12944

Abstract: Base metal plate materials comprising nickel as a main component, rhenium and tungsten, and if desired, a small amount of at least one reducing agent can be used for producing quick operating type directly heated oxide cathodes showing no peeling of the oxide layer from the base metal and having excellent mechanical strength at high temperatures and specific electric resistance.

Abstract translation: 可以使用包含镍作为主要成分的铼和钨的基体金属板材料，如果需要，可以使用少量的至少一种还原剂，用于制造快速操作型直接加热的氧化物阴极，其不显示氧化物层从基体剥离 金属，并且在高温和比电阻下具有优异的机械强度。

公开(公告)号：US4129801A

公开(公告)日：1978-12-12

申请号：US813240

申请日：1977-07-06

Applicant: Ko Soeno ,  Tomio Iizuka ,  Toshio Doi ,  Hisashi Ando ,  Testuo Oyama ,  Hiroshi Sakamoto ,  Akira Misumi

Inventor： Ko Soeno ,  Tomio Iizuka ,  Toshio Doi ,  Hisashi Ando ,  Testuo Oyama ,  Hiroshi Sakamoto ,  Akira Misumi

IPC: H01J9/04 ,  H01J29/04 ,  H01J19/06

CPC classification number: H01J29/04 ,  H01J9/04

Abstract: The present cathode for cathode ray tube of directly heating type is characterized by comprising a cathode substrate body having two leg pieces extended in the same direction and a flat part connected to one end of each leg piece, prepared by shaping a flat metal plate of nickel- or cobalt-based alloy, a bonding layer having an uneven surface prepared by diffusion bonding by heating a powder layer comprising powders of alloy or mixture of nickel and cobalt formed on the flat part, to which a thermionic emission layer is to be bonded, and the thermionic emission layer, and has a very small deformation when used and a longer life.A cathode with much less deformation and much longer life can be obtained by using a cathode substrate body prepared from a flat metal plate provided with a thinner metal layer of at least one of nickel and cobalt on its surface than the flat metal plate by diffusion bonding.A cathode with much less deformation after the service for a long period and much longer life is obtained by using a cathode substrate body prepared from a flat metal plate provided with a metal layer of at least one of nickel and cobalt having a smaller thickness on its surface than that of the flat metal plate by diffusion bonding, and then applying a plastic working to the flat metal plate to a desired thickness.

Abstract translation: 本发明的直接加热型阴极射线管阴极的特征在于，具有阴极基体，该阴极基体具有沿相同方向延伸的两个腿部件，以及连接到每个腿部件的一端的平坦部件，其通过使镍 或钴基合金，具有通过扩散接合制备的具有不平坦表面的接合层，其通过加热包含在热电子发射层将被结合的平坦部分上形成的合金或镍和钴的混合物的粉末的粉末层， 和热离子发射层，使用时变形非常小，寿命更长。

公开(公告)号：US3970888A

公开(公告)日：1976-07-20

申请号：US491040

申请日：1974-07-23

Applicant: Hermann Trattner

Inventor： Hermann Trattner

IPC: B23K35/32 ,  H01J1/14 ,  H01J1/15 ,  H01J9/04 ,  H01J19/06

CPC classification number: H01J1/14 ,  H01J9/042

Abstract: A mass for emission electrodes and the like operating at high temperatures, employing a mixture of thorium dioxide and aluminum oxide, which contains tungsten, the thorium dioxide being present from 33-50% by weight, and the aluminum oxide from 4-15%, to which mixture is added 63-35% of tungsten powder, the powdered tungsten preferably being imbedded in a crystalline melt of thorium dioxide and aluminum dioxide, and a method of producing the same.

Abstract translation: 使用含有钨的二氧化钍和氧化铝的混合物，氧化钍占33-50重量％，氧化铝4-15重量％的高温运行的发射电极等的质量， 向该混合物中加入63-35％的钨粉末，该粉末钨优选嵌入二氧化钍和二氧化铝的结晶熔体中，以及其制备方法。

公开(公告)号：US3958146A

公开(公告)日：1976-05-18

申请号：US440683

申请日：1974-02-08

Applicant: William E. Buescher ,  Donald R. Kerstetter

Inventor： William E. Buescher ,  Donald R. Kerstetter

IPC: H01J1/26 ,  H01J29/04 ,  H01J1/14 ,  H01J19/06 ,  H01K1/04

CPC classification number: H01J1/26 ,  H01J29/04

Abstract: Performance of fast warm up cathodes can be improved by providing a black heat radiating surface on the interior of the cathode cap. A particular material can be nichrome which is a nickel chromium alloy. The cathode cap material can be selected from any of the known cathode nickel alloys. A preferred method for accomplishing the result includes the steps of cladding a selected nickel alloy with the nichrome material and then forming the substantially cup shaped cap with the clad material on the interior thereof. The formed cathode cap is then fired for about 10 minutes or longer in wet dissociated ammonia at a temperature of about 900.degree. to 1300.degree.C to oxidize the available chromium on the surface of the nichrome. This produces an even dark surface thereon which has much higher heat radiating capabilities than the silver looking nickel cathode alloy.

公开(公告)号：US3869632A

公开(公告)日：1975-03-04

申请号：US39105673

申请日：1973-08-24

Applicant: KERNFORSCHUNG GMBH GES FUER

Inventor： SCHULZ FRIEDHELM

IPC: H01J27/02 ,  H01J1/14 ,  H01J19/06

CPC classification number: H01J27/022

Abstract: An improved glow cathode for use as an ion source for cyclotrons is provided wherein the electron-emitting means is formed as a pill or button of a high melting point metal or metal carbide which is supported in a mounting of a highly refractory, substantially infusible material having a high electron work function. Preferably, the electron-emitting button is formed as a cylinder of tungsten and the mounting is formed of graphite. This device can be operated at a gas pressure of approximately 0.2 to 0.5 Torr and a heating voltage of 100 to 200 volts to provide deuterium or hydrogen ions for a cyclotron.

Abstract translation: 提供了用作回旋加速器的离子源的改进的辉光阴极，其中电子发射装置形成为高熔点金属或金属碳化物的药丸或纽扣，其被支撑在高耐火材料，基本上不熔的材料 具有高电子功能。 优选地，电子发射按钮形成为钨的圆柱体，并且安装件由石墨形成。 该装置可以在约0.2至0.5托的气体压力和100至200伏的加热电压下操作，以提供用于回旋加速器的氘或氢离子。

公开(公告)号：US3798490A

公开(公告)日：1974-03-19

申请号：US3798490D

申请日：1972-09-01

Applicant: GEN ELECTRIC

Inventor： ACKERMAN S ,  DUNHAM T

IPC: C22C27/04 ,  H01K1/04 ,  H01K1/08 ,  H01J1/05 ,  H01J1/14 ,  H01J1/38 ,  H01J1/48 ,  H01J19/06

CPC classification number: H01K1/04

Abstract: An incandescent lamp having a filament made of tungsten wire containing between 1-2 percent by weight thoria has greatly improved resistance to fracture caused by shock and vibration thereby increasing the service life of the lamp. The thoriated tungsten filament has a recrystallized grain structure which is characterized by approximately equiaxed crystals of tungsten of a smaller and more uniform size and thoria particles which are more uniformly distributed throughout the tungsten matrix than can be obtained by conventional powder metallurgy.

Abstract translation: 具有含有1-2重量％的钍的钨丝制成的灯丝的白炽灯大大改善了由冲击和振动引起的断裂耐受性，从而增加了灯的使用寿命。 钍钨丝具有再结晶晶粒结构，其特征在于具有更小和更均匀尺寸的钨的近似等轴晶体和比通过常规粉末冶金可获得的更均匀分布在钨基体上的氧化钍颗粒。