公开(公告)号：US06252342B1

公开(公告)日：2001-06-26

申请号：US09200193

申请日：1998-11-25

Applicant: Seung Yul Lee ,  Ji Hong Lee ,  Jae Dong Park

Inventor： Seung Yul Lee ,  Ji Hong Lee ,  Jae Dong Park

IPC: H01J128

CPC classification number: H01J9/047 ,  H01J1/28

Abstract: Disclosed is an impregnated cathode structure for a cathode ray tube and its manufacturing method, in which electron emitting material impregnated in a pellet is free from an effect of the welding heat generated when the pellet is secured to a heater sleeve. The impregnated cathode structure has a pellet assembly including a pellet and a pellet fixing sheet. The pellet is attached to a first surface of the pellet fixing sheet, which has a plurality of protuberances. The pellet is manufactured by pressing and sintering, and impregnating electron emitting material into the porous of the pellet. The pellet sleeve is inserted in and welded to a heater sleeve. A heater sleeve is welded to a second surface of the pellet fixing sheet, which is opposite to the first surface.

Abstract translation: 公开了一种用于阴极射线管的浸渍阴极结构及其制造方法，其中浸渍在颗粒中的电子发射材料不受到当颗粒固定在加热套上时产生的焊接热的影响。 浸渍的阴极结构具有包括颗粒和颗粒固定片的颗粒组件。 该颗粒附着在具有多个突起的颗粒固定片的第一表面上。 颗粒通过压制和烧结制造，并将电子发射材料浸渍到颗粒的多孔中。 将颗粒套筒插入并焊接到加热器套筒上。 加热套管焊接在与第一表面相对的颗粒固定片的第二表面上。

公开(公告)号：US5828164A

公开(公告)日：1998-10-27

申请号：US647502

申请日：1996-05-14

Applicant: Louis E. Branovich ,  Donald W. Eckart ,  Paul Fischer

Inventor： Louis E. Branovich ,  Donald W. Eckart ,  Paul Fischer

IPC: H01J1/28 ,  H01J9/04 ,  H01J1/14 ,  H01J19/06 ,  H01K1/04

CPC classification number: H01J9/047 ,  H01J1/28

Abstract: A method is provided of preparing an impregnated cathode with enhanced thionic emission from a porous billet by impregnating the billed with a suitable impregnant in the presence of an oxygen deficient compound. Additives such as Ir, Os, and Rh react in such a way as to increase emission by reacting to generate oxygen deficient compounds such as WO.sub.2. Moreover, intermediate oxygen sufficient products formed in the chemical reactions can be used as impregnants providing they generate oxygen deficient compounds in the presence of the active emissive material.

Abstract translation: 提供了一种通过在缺氧化合物的存在下浸渍用合适的浸渍剂进行浸渍来制备具有来自多孔坯料的增强的热离子发射的浸渍阴极的方法。 添加剂如Ir，Os和Rh以这样的方式进行反应，即通过反应产生缺氧化合物如WO2来增加排放。 此外，在化学反应中形成的中间氧足够的产物可用作浸渍剂，只要它们在活性发射材料存在下产生缺氧化合物即可。

公开(公告)号：US5306189A

公开(公告)日：1994-04-26

申请号：US947413

申请日：1992-09-18

Applicant: Toshikazu Sugimura ,  Maki Narita

Inventor： Toshikazu Sugimura ,  Maki Narita

IPC: H01J1/28 ,  H01J1/30 ,  H01J9/04

CPC classification number: H01J1/28 ,  H01J1/30 ,  H01J9/042

Abstract: An impregnated cathode including an electron emissive substance in a porous matrix of a metal having a high melting point and a heat resistive property, is manufactured by mixing (S2) powder of the metal and the electron emissive substance in a dry state into cathode forming powder, press-shaping (S3) the cathode forming powder into a shaped body, sealing (S4) the shaped body in a reaction vessel to provide a sealed vessel, and subjecting (S5) the shaped body in the sealed vessel to a hot isostatic press (HIP) to provide a sintered body of the cathode forming powder, wherein the substance comprises a barium aluminate compound represented by a chemical formula of:(pBaO.qCaO).nBaAl.sub.2 O.sub.4,where p represents an integer which is not less than one, q representing an integer which is not less than zero, n representing an integer which is not less than one. Preferably, the HIP is carried out at a temperature between 900.degree. C. and 1400.degree. C. for twenty minutes with the sealed vessel placed in an argon atmosphere of 1500 atmospheres. The cathode preferably includes the substance in a ratio which is greater than 5.7% by weight and is not greater than 13.8% by weight.

Abstract translation: 通过将（S2）金属粉末和电子发射物质（S2）混合成阴极形成粉末（S2），制造具有高熔点和耐热性的金属的多孔基体中的电子发射物质的浸渍阴极 ，将阴极形成粉末压成型（S3）成型体，将反应容器内的成形体密封（S4），以提供密封容器，并将密封容器中的成形体（S5）（S5）加热至等静压机 （HIP）以提供阴极形成粉末的烧结体，其中该物质包含由以下化学式表示的铝酸钡化合物：（pBaO.qCaO）·nBaAl2O4，其中p表示不小于1的整数，q 表示不小于零的整数，n表示不小于1的整数。 优选地，将HIP在900℃至1400℃的温度下进行20分钟，同时将密封容器置于1500个大气压的氩气气氛中。 阴极优选包含大于5.7重量％且不大于13.8重量％的比例的物质。

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.