公开(公告)号：US5115164A

公开(公告)日：1992-05-19

申请号：US611688

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

IPC: H01J1/14 ,  H01J1/28

CPC classification number: H01J1/14 ,  H01J1/28

Abstract: A dispenser cathode comprises an electron emissive material containing BaAl.sub.4 and Ni, the porous metal base body and a sleeve. The activation aging time of the dispenser cathode according to the present invention is shortened greatly as compared with the conventional dispenser cathode and therefore, the productivity can be increased.

Abstract translation: 分配器阴极包括含有BaAl 4和Ni的电子发射材料，多孔金属基体和套管。 与传统的分配器阴极相比，根据本发明的分配器阴极的活化老化时间大大缩短，因此可以提高生产率。

公开(公告)号：US5114742A

公开(公告)日：1992-05-19

申请号：US731601

申请日：1991-07-17

Applicant: Louis F. Branovich ,  Gerard L. Freeman ,  Donald W. Eckart

Inventor： Louis F. Branovich ,  Gerard L. Freeman ,  Donald W. Eckart

IPC: H01J1/28

CPC classification number: H01J1/28

Abstract: An improved scandate cathode having an increased emission density is prepared from a porous tungsten billet that has been impregnated with Ba.sub.3 Al.sub.2 O.sub.6 by coating the top surface of the impregnated billet with a mixture of Sc.sub.6 WO.sub.12,Sc(WO.sub.4).sub.3, and W in the mole ratio of 1:3:2, heating the billet to about 1000.degree. C. in a vacuum to cause BaWO.sub.4 and Sc to form in the billet in a molar ratio of 1:1, removing the billet and cleaning in a jewelers lathe, and preparing the billet for a cathode environment.

Abstract translation: 通过用Sc3WO12，Sc（WO4）3和W的混合物涂覆浸渍的坯料的顶表面，从已经浸渍有Ba 3 Al 2 O 6的多孔钨钢坯制备具有增加的发射密度的改进的钪酸盐阴极，摩尔比 1：3：2，在真空中将坯料加热至约1000℃，使BaWO4和Sc以1：1的摩尔比在坯料中形成，除去坯料并在珠宝车床中进行清洗 钢坯用于阴极环境。

公开(公告)号：US4976644A

公开(公告)日：1990-12-11

申请号：US431246

申请日：1989-11-03

Applicant: Jong-in Jung

Inventor： Jong-in Jung

IPC: H01J1/28 ,  H01J9/04 ,  H01J29/04

CPC classification number: H01J1/28 ,  H01J9/04 ,  H01J9/042

Abstract: A manufacturing method for a dispenser cathode for the electron gun, said cathode comprising a container, an electron emissive material in the container, a porous metal body covering the emissive material, and a sleeve supporting the container. The method includes gas plasma sputtering process to form a porous metal body over the surface of the electron emissive material in the container. The method also may include forming a skirt along the upper edge of the container to strengthen the adherence of the porous metal body to the skirt and to achieve tight sealing of the skirt and porous metal body. The method also can prevent damage of the porous metal body, and can increase the beam currents.

Abstract translation: 一种用于电子枪的分配器阴极的制造方法，所述阴极包括容器，容器中的电子发射材料，覆盖发射材料的多孔金属体以及支撑容器的套筒。 该方法包括气体等离子体溅射工艺，以在容器中的电子发射材料的表面上形成多孔金属体。 该方法还可以包括沿着容器的上边缘形成裙部，以加强多孔金属体与裙部的粘附，并实现裙部和多孔金属体的紧密密封。 该方法还可以防止多孔金属体的损坏，并且可以增加束流。

公开(公告)号：US4929418A

公开(公告)日：1990-05-29

申请号：US468335

申请日：1990-01-22

Applicant: Louis E. Branovich ,  Bernard Smith ,  Gerard L. Freeman ,  Eckart Donald W.

Inventor： Louis E. Branovich ,  Bernard Smith ,  Gerard L. Freeman ,  Eckart Donald W.

IPC: B22F3/11 ,  H01J1/28 ,  H01J23/04

CPC classification number: B22F3/11 ,  B22F3/114 ,  H01J1/28 ,  H01J23/04

Abstract: A cathode is made from tungsten powder using as an impregnant the product rmed from adding about 1 mole of a member selected from the group consisting of zirconium, zirconium dioxide, hafnium, hafnium dioxide, uranium, uranium dioxide, titanium, and titanium dioxide to about 50 to about 100 moles of a compound selected from the group consisting of Ba.sub.3 Al.sub.2 O.sub.6, Ba.sub.3 WO.sub.6, and Ba.sub.4 Al.sub.2 O.sub.7.

Abstract translation: 阴极由钨粉制成，使用由添加约1摩尔选自锆，二氧化锆，铪，二氧化铪，铀，二氧化铀，钛和二氧化钛组成的组的组分形成的产物作为浸渍剂。 50至约100摩尔选自Ba3Al2O6，Ba3WO6和Ba4Al2O7的化合物。

公开(公告)号：US4910079A

公开(公告)日：1990-03-20

申请号：US287328

申请日：1988-12-21

Applicant: Arvind Shroff ,  Serge Vilminot ,  Dominique Brion ,  Bernard Carriere ,  Veronique Hebert

Inventor： Arvind Shroff ,  Serge Vilminot ,  Dominique Brion ,  Bernard Carriere ,  Veronique Hebert

IPC: B22F3/26 ,  H01J1/28 ,  H01J9/04

CPC classification number: B22F3/26 ,  H01J1/28 ,  H01J9/042 ,  Y10T428/249955 ,  Y10T428/249956 ,  Y10T428/249957

Abstract: Disclosed are a method for the fabrication of an impregnated cathode and a cathode obtained thereby. The impregnation is obtained by applying a sol-gel method. The emissive material which impregnates the body of the cathode only partially fills the pores. This facilitates the migration of the material towards the surface and increases the lifetime of the cathode.

Abstract translation: 公开了一种用于制造由此获得的浸渍阴极和阴极的方法。 通过施加溶胶 - 凝胶法获得浸渍。 浸渍阴极体的发射材料仅部分填充孔。 这有助于材料向表面的迁移并且增加阴极的寿命。

公开(公告)号：US4855637A

公开(公告)日：1989-08-08

申请号：US155813

申请日：1988-02-16

Applicant: Isato Watanabe ,  Shigehiko Yamamoto ,  Sadanori Taguchi ,  Susumu Sasaki

Inventor： Isato Watanabe ,  Shigehiko Yamamoto ,  Sadanori Taguchi ,  Susumu Sasaki

IPC: H01J1/14 ,  H01J1/28

CPC classification number: H01J1/28 ,  H01J1/14

Abstract: An impregnated cathode comprising a cathode obtained by impregnating pore portions of a refractory porous substrate with an electron emissive material containing Ba and formed thereon a plurality of thin films made of a high melting metal and Sc, or a high melting metal and a Sc oxide, or a high melting metal, Sc and a Sc oxide, or a high melting metal and a compound of Sc, W and O, said thin films having the same composition but different densities can maintain good emission characteristics even after the sealing off step of tube production because the thin films formed on the cathode surface are oxidation-resistant.

Abstract translation: 一种浸渍阴极，其包括通过用含有Ba的电子发射材料浸渍耐火多孔基材的孔部分并在其上形成多个由高熔点金属和Sc或高熔点金属和Sc氧化物制成的薄膜而得到的阴极， 或高熔点金属Sc和Sc氧化物，或高熔点金属和Sc，W和O的化合物，所述具有相同组成但密度不同的薄膜即使在管的密封步骤之后仍能保持良好的发射特性 因为在阴极表面上形成的薄膜是抗氧化的。

公开(公告)号：US4810926A

公开(公告)日：1989-03-07

申请号：US72720

申请日：1987-07-13

Applicant: James A. Schwarz ,  Edward J. Daniszewski ,  Joseph J. Hutta

Inventor： James A. Schwarz ,  Edward J. Daniszewski ,  Joseph J. Hutta

IPC: H01J1/14 ,  H01J1/28 ,  H01J9/04 ,  H01J19/06

CPC classification number: H01J1/28 ,  H01J9/047

Abstract: An extremely long-life, highly reproducible cathode is produced by preparing a porous sintered metal matrix, impregnating the matrix with a reagent containing a transition metal to modify the surface structure of the matrix, and then impregnating the surface-modified metal matrix with a barium-containing reagent to produce a cathode structure in which barium atoms are held in a metal-metal interaction with the transition metals and the surface of the matrix. In a preferred embodiment, the transition metal oxide is TiO.sub.2. This produces a barium/transition metal oxide surface structure which permits cathode operating temperatures on the order of 650 degrees C. The barium is stable and is retained on the surface of the metal matrix, so further dispensing is not required.

公开(公告)号：US4671777A

公开(公告)日：1987-06-09

申请号：US855233

申请日：1986-04-24

Applicant: Johannes van Esdonk ,  Henricus A. M. van Hal ,  Josef J. van Lith

Inventor： Johannes van Esdonk ,  Henricus A. M. van Hal ,  Josef J. van Lith

IPC: H01J1/14 ,  H01J1/28 ,  H01J9/04

CPC classification number: H01J1/28 ,  H01J1/14 ,  H01J9/04

Abstract: The invention relates to a method of manufacturing a dispenser cathode having a porous tungsten body, in which a metal oxide is provided in the body and the body is impregnated with barium. Good results as regards life and resistance to ion bombardment are obtained if the comparatively cheap oxides of gallium and indium are used.

Abstract translation: 本发明涉及一种制造具有多孔钨体的分配器阴极的方法，其中金属氧化物设置在主体中并且主体被钡浸渍。 如果使用相对便宜的镓和铟的氧化物，则可获得关于生命和抵抗离子轰击的良好结果。

公开(公告)号：US4587455A

公开(公告)日：1986-05-06

申请号：US736965

申请日：1985-05-21

Applicant: Louis R. Falce ,  Glenn S. Breeze

Inventor： Louis R. Falce ,  Glenn S. Breeze

IPC: H01J1/28 ,  H01J9/04 ,  H01J1/14

CPC classification number: H01J1/28 ,  H01J9/04

Abstract: An emitter-dispenser housing for a controlled porosity dispenser cathode manufactured of a single material as a unitary piece by a chemical vapor deposition process in which a configured mandrel is coated with a layer of material such as tungsten, for example, so that when the mandrel is removed from the coating of material a hollow housing is formed having a side wall and an end wall which define a reservoir. In addition, intersecting strips of this same material as the coating, which had been placed in the mandrel, extend transversely across the reservoir with the edges thereof atomically bonded to the coating during the chemical vapor deposition to form a unitary piece. Thereafter an array of apertures is formed in the end wall of the housing by laser drilling to create an emitter-dispenser.

Abstract translation: 用于通过化学气相沉积工艺由单一材料制成的单一材料作为整体件的发射器 - 分配器壳体，其中所配置的心轴涂覆有例如钨的材料层，使得当心轴 从材料涂层去除，形成有中空壳体，其具有限定储存器的侧壁和端壁。 此外，已经放置在心轴中的与涂层相同的材料的相交的条带横向延伸穿过储存器，其中在化学气相沉积期间其边缘原子地结合到涂层上以形成整体。 此后，通过激光钻孔在壳体的端壁中形成孔阵列以产生发射器 - 分配器。

公开(公告)号：US4494035A

公开(公告)日：1985-01-15

申请号：US318316

申请日：1981-11-04

Applicant: Pierre Palluel ,  Arvind Shroff

Inventor： Pierre Palluel ,  Arvind Shroff

IPC: H01J23/06 ,  H01J1/28 ,  H01J23/04 ,  H01J1/14 ,  H01J19/06 ,  H01K1/04

CPC classification number: H01J1/28 ,  H01J23/04

Abstract: This invention concerns a thermoelectronic cathode for hyperfrequency electron tubes.The cathode comprises a cylindrical molybdenum casing, the lower portion of which contains a heating filament, while the upper portion contains two superimposed porous bodies, the lower one made from impregnated material, and the upper one from non-impregnated material.

Abstract translation: 本发明涉及一种用于超频电子管的热电子阴极。 阴极包括一个圆柱形的钼壳体，其下部包含加热丝，而上部包含两个重叠的多孔体，下部由多个浸渍的材料制成，上部由非浸渍材料制成。