公开(公告)号：US6034469A

公开(公告)日：2000-03-07

申请号：US981187

申请日：1997-12-09

Applicant: Eiichirou Uda ,  Toshiharu Higuchi ,  Osamu Nakamura ,  Kiyomi Koyama ,  Sadao Matsumoto ,  Yoshiaki Ouchi ,  Kazuo Kobayashi ,  Takashi Sudo ,  Katsuhisa Homma

Inventor： Eiichirou Uda ,  Toshiharu Higuchi ,  Osamu Nakamura ,  Kiyomi Koyama ,  Sadao Matsumoto ,  Yoshiaki Ouchi ,  Kazuo Kobayashi ,  Takashi Sudo ,  Katsuhisa Homma

IPC: H01J1/28 ,  H01J9/04 ,  H01J23/04 ,  H01J23/087 ,  H01J1/14

CPC classification number: H01J23/087 ,  H01J1/28 ,  H01J23/04 ,  H01J9/042 ,  H01J2223/04

Abstract: There is provided an impregnated-type cathode substrate comprising a large particle diameter low porosity region and a small particle diameter high porosity region which is provided in a side of an electron emission surface of the large particle diameter low porosity region and has an average particle diameter smaller than an average particle diameter of the large particle diameter low pore region and a porosity higher than a porosity of the large particle diameter low porosity region, the impregnated-type cathode being impregnated with an electron emission substance.

Abstract translation: PCT No.PCT / JP96 / 01527 Sec。 371日期1997年12月9日第 102（e）1997年12月9日PCT PCT 1996年6月6日PCT公布。 公开号WO96 / 42100 PCT 日期：1996年12月27日提供一种浸渍型阴极基板，其包括大粒径低孔隙率区域和小粒径高孔隙率区域，该区域设置在大粒径低孔隙率区域的电子发射表面的一侧， 平均粒径小于大粒径低孔区域的平均粒径，孔隙率高于大粒径低孔隙率区域的孔隙率，浸渍型阴极浸渍有电子发射物质。

公开(公告)号：US5951352A

公开(公告)日：1999-09-14

申请号：US12346

申请日：1998-01-23

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

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

IPC: H01J1/28 ,  H01J9/04

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：US5666022A

公开(公告)日：1997-09-09

申请号：US726900

申请日：1996-10-07

Applicant: Jacobus A. J. M. Deckers ,  Theodorus H. Weekers ,  Albert Manenschijn ,  Franciscus M. M. Snijkers ,  Petrus A. M. Van Der Heide

Inventor： Jacobus A. J. M. Deckers ,  Theodorus H. Weekers ,  Albert Manenschijn ,  Franciscus M. M. Snijkers ,  Petrus A. M. Van Der Heide

IPC: H01J1/28 ,  H01J9/04 ,  H01J1/14

CPC classification number: H01J9/047 ,  H01J1/28 ,  H01J2201/2892

Abstract: A method of manufacturing a dispenser cathode, in which method a powder of a refractory metal and a scandium-containing powder are mixed with each other and pressed to form a cathode body. According to the invention at least both these powders and a suitable binder are mixed with each other to form a homogeneous suspension prior to the pressing operation and the whole mixture is subsequently cured and ground to granules having a larger average size and hence a greater fluidity than the grains of the starting powders. Subsequently the granules thus obtained are pressed to form a cathode body (2). The invention leads to a better processibility and greater convenience of handling of the starting powders so that notably very fine starting powders can be used, which results in cathodes (1) having a better recovery after ion bombardment as compared with cathodes manufactured in conventional manners which are necessarily based on relatively coarse powders.

Abstract translation: 一种制造分配器阴极的方法，其中将难熔金属和含钪粉末的粉末彼此混合并压制以形成阴极体。 根据本发明，至少将这两种粉末和合适的粘合剂彼此混合以在压制操作之前形成均匀的悬浮液，然后将整个混合物固化并研磨成具有较大平均尺寸的颗粒，因此流动性大于 起始粉末的颗粒。 随后将由此获得的颗粒压制以形成阴极体（2）。 本发明导致更好的加工性和更好的处理起始粉末的便利性，使得可以使用显着非常细的起始粉末，这导致与以常规方法制造的阴极相比，在离子轰击之后具有更好恢复的阴极（1） 必须基于较粗的粉末。

公开(公告)号：US5594299A

公开(公告)日：1997-01-14

申请号：US401728

申请日：1995-03-09

Applicant: Frank Bossert ,  Manfred Hacker ,  Rolf Lotthammer

Inventor： Frank Bossert ,  Manfred Hacker ,  Rolf Lotthammer

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

CPC classification number: H01J1/28

Abstract: A dispenser cathode including a dispenser body formed of a metal matrix and an emission surface formed of emission material impregnated into the dispenser body metal matrix. The metal matrix is a porous sintered metal matrix containing at least one metal frown a first group (W, Mo, Cr) and at least one metal of a second group (Fe, Co, Ni, Ru, Rh, Pd, Re, Os, Ir, Pt) and chromium oxide. The chromium oxide and the metals from the two groups are provided as a powder mixture to form the matrix. The emission material includes at least two alkaline earth metal oxides such as CaO, BaO and at least one oxide of a metal of group IIIa or IIIb of the Periodic Table. The oxide of a metal group is Al.sub.2 O.sub.3.

Abstract translation: 一种分配器阴极，包括由金属基体形成的分配器主体和由浸渍到分配器主体金属基体中的发射材料形成的发射表面。 该金属基体是含有至少一种金属的第一组（W，Mo，Cr）和至少一种第二组金属（Fe，Co，Ni，Ru，Rh，Pd，Re，Os）的多孔烧结金属基体 ，Ir，Pt）和氧化铬。 提供氧化铬和来自两组的金属作为粉末混合物以形成基质。 发光材料包括至少两种碱土金属氧化物如CaO，BaO和至少一种元素周期表IIIa或IIIb族金属的氧化物。 金属组的氧化物为Al2O3。

公开(公告)号：US5459372A

公开(公告)日：1995-10-17

申请号：US348249

申请日：1994-11-28

Applicant: Hwanchul Roh

Inventor： Hwanchul Roh

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

CPC classification number: H01J9/047 ,  H01J1/28

Abstract: An impregnated cathode structure has: (1) a sleeve having a truncated conically-shaped top portion with an opening having a predetermined diameter at the center thereof; (2) oxide cathode material formed within and conforming to the shape of the sleeve to form a point exposed through the opening; (3) a receiver forming part of said sleeve for retaining the oxide cathode material; (4) a backing plug which divides the inside of the sleeve so as to form a space for the receiver; and (5) a heater installed in the sleeve below the backing plug.

Abstract translation: 浸渍的阴极结构具有：（1）具有截头圆锥形顶部的套筒，具有在其中心具有预定直径的开口; （2）氧化物阴极材料，形成在其内并符合套筒的形状以形成通过开口暴露的点; （3）形成用于保持氧化物阴极材料的所述套筒的一部分的接收器; （4）背衬塞，其分隔套筒的内部以形成接收器的空间; 和（5）安装在衬套下方的衬套上的加热器。

公开(公告)号：US5418070A

公开(公告)日：1995-05-23

申请号：US187100

申请日：1988-04-28

Applicant: Michael C. Green

Inventor： Michael C. Green

IPC: H01J1/28 ,  B22F7/02 ,  H01J29/00

CPC classification number: H01J1/28 ,  Y10T428/12007 ,  Y10T428/12028 ,  Y10T428/12042 ,  Y10T428/12049 ,  Y10T428/12056 ,  Y10T428/1216 ,  Y10T428/12167

Abstract: An impregnated cathode comprising three layers: a very thin emitting surface layer of metal such as an alloy of tungsten with a high fraction of an activating metal of the platinum group to provide low workfunction; an underlying, thin buffer layer of porous tungsten alloyed with a fraction of activating metal, to retard diffusion loss of activating metal from the emitting layer; and a substrate of porous tungsten impregnated with barium aluminate.

Abstract translation: 包含三层的浸渍阴极：金属的非常薄的发射表面层，例如钨与铂族的活性金属的高部分的合金，以提供低功函数; 与一部分活化金属合金化的多孔钨的下面的薄缓冲层，以阻止活化金属从发光层的扩散损失; 以及浸渍有铝酸钡的多孔钨基体。

公开(公告)号：US5350969A

公开(公告)日：1994-09-27

申请号：US802076

申请日：1991-12-03

Applicant: Todd R. Gattuso

Inventor： Todd R. Gattuso

IPC: H01J1/15 ,  H01J1/22 ,  H01J1/28 ,  H01J9/08 ,  H01J23/04 ,  H01J29/04

CPC classification number: H01J23/04 ,  H01J1/22 ,  H01J9/08 ,  H01J2201/2878

Abstract: A cathode heater includes a patterned conductor embedded within a dielectric substrate. The ceramic substrate has a pair of conductors over the respective surfaces thereof to provide electrical contact for the heater. To assemble the substrates having the conductors, the substrates and printed conductive patterns are fired to provide a composite multi-layer ceramic heater which can be used to heat cathode electrodes in microwave tubes such as travelling wave tubes.

Abstract translation: 阴极加热器包括嵌入电介质基板内的图案化导体。 陶瓷基板在其相应表面上具有一对导体以提供加热器的电接触。 为了组装具有导体的基板，对基板和印刷导电图案进行烧制以提供可用于加热诸如行波管的微波管中的阴极电极的复合多层陶瓷加热器。

公开(公告)号：US5334085A

公开(公告)日：1994-08-02

申请号：US887663

申请日：1992-05-26

Applicant: Arvind Shroff

Inventor： Arvind Shroff

IPC: B22F3/26 ,  B22F5/00 ,  H01J1/14 ,  H01J1/28 ,  H01J9/04

CPC classification number: H01J1/28 ,  H01J9/04

Abstract: The invention relates to a manufacturing process for an impregnated cathode for an electron tube and the impregnated cathode obtained in this manner. The method consists in mixing (b) a powder (Y) containing the emissive elements (generally barium and calcium aluminates) with powder (W) of at least one refractory metal (generally tungsten, if necessary mixed with a platinum ore metal), then pressing (c) this mixture into a pellet (1) which is then sintered (d) at a high temperature in hydrogen (approx. 2000.degree. C.). In the prior art of this method, a powder of at least one refractory metal was pressed and sintered and then impregnated, machined, cleaned, etc. The process according to the invention therefore saves many steps in the manufacture of an impregnated cathode with respect to the prior art.

Abstract translation: 本发明涉及一种用于电子管的浸渍阴极和以这种方式获得的浸渍阴极的制造方法。 该方法包括将含有发光元素（通常为钡和铝酸钙）的粉末（Y）与至少一种难熔金属（通常为钨，如果需要与铂矿金属混合））的粉末（W）混合（b） 将（c）该混合物压制成颗粒（1），然后在高温（约2000℃）下烧结（d）。 在该方法的现有技术中，将至少一种难熔金属的粉末压制并烧结，然后浸渍，机加工，清洁等。因此，根据本发明的方法在制造浸渍的阴极方面相对于 现有技术

公开(公告)号：US5318468A

公开(公告)日：1994-06-07

申请号：US873370

申请日：1992-04-24

Applicant: Rolf Lotthammer ,  Frank Bossert ,  Manfred Hacker

Inventor： Rolf Lotthammer ,  Frank Bossert ,  Manfred Hacker

IPC: B22F5/00 ,  H01J1/14 ,  H01J1/28 ,  H01J9/04

CPC classification number: H01J1/28 ,  H01J9/047

Abstract: A dispenser cathode with multilayer sintered body is suggested, wherein the layers have a thickness of between 0.01 and 10 mm and have different compositions.

Abstract translation: 提出了具有多层烧结体的分配器阴极，其中层的厚度为0.01至10mm并具有不同的组成。

公开(公告)号：US5298830A

公开(公告)日：1994-03-29

申请号：US866773

申请日：1992-04-03

Applicant: Louis E. Branovich ,  Donald W. Eckart

Inventor： Louis E. Branovich ,  Donald W. Eckart

IPC: H01J1/28 ,  H01J9/04 ,  H01J1/14

CPC classification number: H01J1/28 ,  H01J9/047

Abstract: A method is provided of preparing an impregnated cathode with enhanced thionic emission from a porous billet by impregnating the billet with a suitable impregnant in the presence of an oxygen deficient compound.

Abstract translation: 提供了一种通过在缺氧化合物的存在下用合适的浸渍剂浸渍坯料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。