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公开(公告)号：US4379250A
公开(公告)日：1983-04-05
申请号：US198176
申请日：1980-10-17
CPC分类号： H01J1/304 , H01J37/073 , H01J2237/06316
摘要： A field emission cathode of the present invention is characterized by the possession of a special layer which is adsorbed onto the surfaces of a tip that is joined to the top of a hairpin-shaped filament.This layer is formed by adsorbing a selected metal via oxygen to a thickness which does not exceed the thickness of the monolayer of atoms.The metal will be selected from chromium, aluminum, cerium, magnesium, titanium, silicon, zirconium or hafnium.The field emission cathode features that the electrons are emitted in a concentrated manner from a particular crystal plane among the crystal planes of the tip.Therefore, it is possible to obtain a field emission cathode having very small emission angle of electrons.
摘要翻译： 本发明的场致发射阴极的特征在于具有吸附在与发夹状丝的顶部接合的尖端的表面上的特殊层。 该层通过将氧选择的金属吸附至不超过原子单层厚度的厚度而形成。 金属将选自铬，铝，铈，镁，钛，硅，锆或铪。 场发射阴极的特征在于电子以尖端的晶面中的特定晶面以集中的方式发射。 因此，可以获得具有非常小的电子发射角的场致发射阴极。
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公开(公告)号：US4193013A
公开(公告)日：1980-03-11
申请号：US897406
申请日：1978-04-18
摘要： A cathode for an electron source according to this invention comprises an emitter tip made of an electron emissive material, a filament for holding the emitter tip, and a binder for binding the emitter tip and the filament, the filament and the binder being made of glassy carbon. The binder can have a carbide or boride powder incorporated therein. The cathode according to this invention can be produced by using a thermosetting resin of predetermined shape as the starting material of the filament, fixing the emitter tip to a predetermined position of the thermosetting resin with the adhesive agent made of the raw thermosetting resin, and heating the resultant assembly in a non-oxidizing atmosphere to carbonize the resinous portions. This cathode is structurally very simple. Moreover, the adhesion between the filament and the emitter tip is excellent, and the emitter tip can be heated to high temperatures above 2,000.degree. C. by causing current to flow through the cathode.
摘要翻译： 根据本发明的用于电子源的阴极包括由电子发射材料制成的发射极尖端，用于保持发射极尖端的灯丝和用于结合发射极尖端和灯丝的粘合剂，灯丝和粘合剂由玻璃状 碳。 粘合剂可以具有并入其中的碳化物或硼化物粉末。 根据本发明的阴极可以通过使用预定形状的热固性树脂作为丝的起始材料，使用由原始热固性树脂制成的粘合剂将发射极尖端固定到热固性树脂的预定位置，并加热 所得组合物在非氧化气氛中以使树脂部分碳化。 该阴极在结构上非常简单。 此外，灯丝和发射极尖端之间的粘附性优异，并且通过使电流流过阴极，可以将发射极尖端加热到高于2000℃的高温。
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公开(公告)号：US4737679A
公开(公告)日：1988-04-12
申请号：US826339
申请日：1986-02-05
CPC分类号： H01J1/28 , Y10T428/265
摘要： The present invention relates to an impregnated cathode produced by attaching at least two layered thin films, the thin films comprising an under layer consisting of a high melting point metal thin film composed of, for example, Os, Ru, Rh, Pd, Ir, Pt, Re, Mo, W, Ta, etc., and an over layer consisting of a high melting point metal layer which contains Sc.sub.2 O.sub.3 and which is placed over the layer, on the surface of the impregnated cathode pellet generated by impregnating a refractory porous base body with electron emissive materials. The invention relates also to an electron tube having this cathode. This cathode maintains a low work functional mono-layer stably for a long period of time on its surface.
摘要翻译： 本发明涉及通过附着至少两层薄膜而制造的浸渍阴极，该薄膜包括由例如由Os，Ru，Rh，Pd，Ir组成的高熔点金属薄膜构成的底层， Pt，Re，Mo，W，Ta等，以及由含有Sc 2 O 3的高熔点金属层构成的覆层，该层由放置在该层上的浸渍的阴极粒子的表面上， 基体与电子发射材料。 本发明还涉及具有该阴极的电子管。 该阴极在其表面上长时间稳定地保持低功函数单层。
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公开(公告)号：US4291252A
公开(公告)日：1981-09-22
申请号：US95933
申请日：1979-11-20
申请人： Toshiyuki Aida , Shigehiko Yamamoto , Sadanori Taguchi , Isamu Yuito , Yukio Honda , Ushio Kawabe , Akira Misumi , Takao Kawamura , Hiroshi Fukushima , Yoshio Degawa
发明人： Toshiyuki Aida , Shigehiko Yamamoto , Sadanori Taguchi , Isamu Yuito , Yukio Honda , Ushio Kawabe , Akira Misumi , Takao Kawamura , Hiroshi Fukushima , Yoshio Degawa
CPC分类号： H01J1/14
摘要： An electron tube cathode has a composite suppression layer structure interposed between the base metal and the electron-emitting material to suppress an interface layer formed through the reaction of the base metal with the electron emissive material. The composite layer structure includes a thin layer of Pt or Re and a layer of oxide of Zr and/or Hf. As a result, the formation of the interface layer is prevented so that the useful life of the electron tube cathode is prolonged.
摘要翻译： 电子管阴极具有插入在基底金属和电子发射材料之间的复合抑制层结构，以抑制通过贱金属与电子发射材料的反应形成的界面层。 复合层结构包括Pt或Re的薄层和Zr和/或Hf的氧化物层。 结果，防止了界面层的形成，延长了电子管阴极的使用寿命。
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公开(公告)号：US4518890A
公开(公告)日：1985-05-21
申请号：US456247
申请日：1983-01-06
摘要： 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.
摘要翻译： 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℃。
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公开(公告)号：US4855637A
公开(公告)日：1989-08-08
申请号：US155813
申请日：1988-02-16
摘要： 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.
摘要翻译： 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。
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公开(公告)号：US4626470A
公开(公告)日：1986-12-02
申请号：US750777
申请日：1985-07-01
CPC分类号： H01J1/14 , Y10T428/265
摘要： An impregnated cathode comprising a refractory porous body impregnated with an electron emissive material and having an electron emissive surface, and a thin film disposed on the electron emissive surface and composed of a refractory metal and one of Sc, scandium oxide and a mixture thereof. The thin film containing Sc or scandium oxide is generated on the body in subsequent to impregnation of the electron emissive material into the refractory porous body with the result that a mono-atomic layer composed of Ba, Sc and O is maintained on the electron emissive surface over a long period of use.
摘要翻译： 浸渍的阴极，包括浸渍有电子发射材料并具有电子发射表面的难熔多孔体，以及设置在电子发射表面上并由难熔金属和Sc，钪氧化物之一及其混合物组成的薄膜。 在电子发射材料浸渍到难熔多孔体中之后，在体上产生含有Sc或氧化钪的薄膜，结果是由Ba，Sc和O组成的单原子层保持在电子发射表面上 长时间使用。
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公开(公告)号：US4310777A
公开(公告)日：1982-01-12
申请号：US110920
申请日：1980-01-10
CPC分类号： H01J1/18
摘要： A directly heated cathode for an electron tube comprising a base plate made of an alloy containing 20 to 30% by weight of W, 0.12 to 0.28% by weight of Zr and the remainder being Ni and an electron emissive oxide layer disposed directly on the base plate shows good and stable electron emission properties and when it is installed in a television picture tube, the picture tube shows excellent initial properties.
摘要翻译： 一种用于电子管的直接加热阴极，包括由包含20至30重量％的W，0.12至0.28重量％的Zr和余量为Ni的合金制成的基板和直接设置在基底上的电子发射氧化物层 板显示出良好且稳定的电子发射特性，并且当其安装在电视显像管中时，显像管显示出优异的初始特性。
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9.发明授权
公开(公告)号：US3945698A
公开(公告)日：1976-03-23
申请号：US512925
申请日：1974-10-07
IPC分类号： H01J1/304 , H01J9/02 , H01J37/073 , H01J9/00
CPC分类号： H01J37/073 , H01J9/025
摘要： A stabilizing method is provided wherein a field emission cathode is subject to heat treatment of 2,000.degree.C. to 3,000.degree.C. in a hydrogen gas atmosphere of 1 .times. 10.sup..sup.-9 Torr to 5 .times. 10.sup..sup.-7 Torr and hereinafter an electric field in excess of 10.sup.7 volt/cm is applied to the cathode, whereby the emitted electron beam current from the cathode can be maintained constant for a long time.
摘要翻译： 提供一种稳定方法，其中场致发射阴极在1×10 -9 Torr至5×10 -7 Torr的氢气气氛中进行2000℃至3,000℃的热处理，下文 向阴极施加超过107伏/厘米的电场，从而可以长时间保持来自阴极的发射电子束电流恒定。
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公开(公告)号：US3932314A
公开(公告)日：1976-01-13
申请号：US503471
申请日：1974-09-05
申请人： Ushio Kawabe , Shigehiko Yamamoto , Toshiyuki Aita , Yukio Honda
发明人： Ushio Kawabe , Shigehiko Yamamoto , Toshiyuki Aita , Yukio Honda
摘要： An electron emissive material of the formula (Y.sub.1.sub.-x EU.sub.x)B.sub.6 having the calcium hexaboride type crystal structure can easily produce hexaborides of the single phase. These borides have a number of merits such as small work function, high mechanical properties and low vapor pressure, and they are far more excellent than prior-art materials when used in a thermionic emission cathode and a field emission type cold cathode.
摘要翻译： 具有六硼化钙型晶体结构的式（Y1-xEUx）B6的电子发射材料可以容易地生产单相六硼化物。 这些硼化物具有功函数小，机械性能好，蒸气压低的优点，而且当用于热电子发射阴极和场致发射型冷阴极时，它们比现有技术的材料要好得多。
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