公开(公告)号：US3823337A

公开(公告)日：1974-07-09

申请号：US36387773

申请日：1973-05-25

Applicant: PHILIPS CORP

Inventor： MITRA N ,  VAN STRATUM A ,  ZALM P

IPC: H01J1/14 ,  H01J1/148 ,  H01J1/15 ,  H01J19/06

CPC classification number: H01J1/15 ,  H01J1/148

Abstract: A cathode suitable for poor vacuum conditions and repeated exposures to air consists of a molybdenum support, compact or compressed powder, welded on a tungsten wire and having thereon a compressed mixture of rhenium with lanthanum hexaboride. Instead of rhenium, a tungsten boride such as W2B or W2B5 may be chosen.

公开(公告)号：US09790620B1

公开(公告)日：2017-10-17

申请号：US15400427

申请日：2017-01-06

Applicant: NuFlare Technology, Inc. ,  NuFlare Technology America, Inc.

Inventor： Victor Katsap

IPC: H01J1/148 ,  C30B29/66 ,  C30B29/10 ,  B05D3/06 ,  H01J9/04 ,  B05D3/04

CPC classification number: C30B29/66 ,  B05D3/048 ,  C30B29/10 ,  H01J1/148 ,  H01J9/042

Abstract: A method to reduce the work function of a carbon-coated lanthanum hexaboride (LaB6) cathode wherein the exposed tip of the cathode is exposed to moisture between two heat treatments is provided. The work function may be reduced by 0.01 eV or more.

公开(公告)号：US20140097736A1

公开(公告)日：2014-04-10

申请号：US13644281

申请日：2012-10-04

Applicant: NUFLARE TECHNOLOGY, INC.

Inventor： Victor Katsap

IPC: H01J19/04 ,  H01J1/13 ,  H01J9/04 ,  H01J1/14

CPC classification number: H01J1/14 ,  H01J1/148 ,  H01J9/04 ,  H01J37/065 ,  H01J2237/06308

Abstract: An improved cathode comprises a cone-shaped emitter with a carbon-based coating applied to the emitter cone surface, in which there is a narrow annular gap between the emitter body and the carbon coating. The gap prevents direct contact between the carbon coating and the crystalline emitting material, thereby preventing damaging interactions and extending the useful lifetime of the cathode.

Abstract translation: 改进的阴极包括锥形发射器，其具有施加到发射体锥表面的碳基涂层，其中在发射体和碳涂层之间存在窄的环形间隙。 间隙防止碳涂层和结晶发射材料之间的直接接触，从而防止损坏相互作用并延长阴极的使用寿命。

公开(公告)号：US08536773B2

公开(公告)日：2013-09-17

申请号：US13075325

申请日：2011-03-30

Applicant: Wolfram Buehler ,  Volker Drexel

Inventor： Wolfram Buehler ,  Volker Drexel

IPC: H01J19/06 ,  H01K1/04

CPC classification number: H01J3/022 ,  H01J1/148 ,  H01J1/3044 ,  H01J1/50 ,  H01J3/02 ,  H01J37/073 ,  H01J2237/06383 ,  H01J2237/24465 ,  H01J2237/24557

Abstract: An electron beam source includes a base and a tip fixed to the base and extending from the base. The tip includes a core and a coating applied to the core. The core has a surface that includes a first material. The coating includes a second material which is different from the first material. The second material forms a surface of the tip, and the second coating includes more than 30% by weight of a lanthanide element.

Abstract translation: 电子束源包括基部和固定到基部并从基部延伸的尖端。 尖端包括芯和施加到芯的涂层。 芯具有包括第一材料的表面。 涂层包括与第一材料不同的第二材料。 第二材料形成尖端的表面，第二涂层包含超过30重量％的镧系元素。

公开(公告)号：US07652415B2

公开(公告)日：2010-01-26

申请号：US11254991

申请日：2005-10-20

Applicant: Gopi Chandran Ramachandran ,  Alok Mani Srivastava ,  Timothy John Sommerer ,  Suchismita Sanyal ,  Prasanth Kumar Nammalwar ,  Holly Ann Comanzo ,  William Winder Beers ,  Madras Venugopal Shankar

Inventor： Gopi Chandran Ramachandran ,  Alok Mani Srivastava ,  Timothy John Sommerer ,  Suchismita Sanyal ,  Prasanth Kumar Nammalwar ,  Holly Ann Comanzo ,  William Winder Beers ,  Madras Venugopal Shankar

IPC: H01J1/14

CPC classification number: H01J61/0677 ,  H01J1/14 ,  H01J1/148 ,  H01J1/15 ,  H01J1/304 ,  H01J9/025 ,  H01J9/042 ,  H01J61/0672 ,  H01J61/0732 ,  H01J61/0737

Abstract: An electron emissive material comprises an alkaline earth metal halide composition and operable to emit electrons on excitation. A lamp including an envelope, an electrode including an alkaline earth metal halide electron emissive material and a discharge material, is also disclosed.

Abstract translation: 电子发射材料包括碱土金属卤化物组合物并且可在激发时发射电子。 还公开了一种包括外壳，包括碱土金属卤化物电子发射材料的电极和放电材料的灯。

公开(公告)号：US5911919A

公开(公告)日：1999-06-15

申请号：US925842

申请日：1997-09-08

Applicant: Garth W. Billings

Inventor： Garth W. Billings

IPC: H01B1/06 ,  H01J1/142 ,  H01J1/144 ,  H01J1/148 ,  H01J1/304 ,  H01J1/00 ,  H01J1/02

CPC classification number: H01J1/148 ,  H01B1/06 ,  H01J1/142 ,  H01J1/144 ,  H01J1/304

Abstract: Electron emission materials consisting of carbides, borides, and oxides, and related mixtures and compounds, of Group IVB metals Hf, Zr, and Ti, Group IIA metals Be, Mg, Ca, Sr, and Ba, and Group IIIB metals Sc, Y and lanthanides La through Lu are used in electrodes. These electron emission materials are typically contained in a refractory metal matrix formed of tungsten, tantalum, rhenium, and their alloys, but may also be used by themselves. These materials and electrodes have high melting points, low vapor pressures, low work functions, high electrical and thermal conductivity, and high thermionic electron emission and field emission properties.

Abstract translation: 由ⅣB族金属Hf，Zr和Ti，IIA族金属Be，Mg，Ca，Sr和Ba以及IIIB族金属组成的由碳化物，硼化物和氧化物组成的电子发射材料及相关混合物和化合物Sc，Y 镧系元素La，Lu用于电极。 这些电子发射材料通常包含在由钨，钽，铼及其合金形成的难熔金属基体中，但也可以自己使用。 这些材料和电极具有高熔点，低蒸汽压力，低功函数，高导热性和高热电子发射和场发射性能。

公开(公告)号：US4878866A

公开(公告)日：1989-11-07

申请号：US222300

申请日：1988-07-22

Applicant: Yoshiharu Mori ,  Suzuya Yamada ,  Mitsuaki Saito ,  Hirotoshi Hagiwara ,  Kenichi Ehara

Inventor： Yoshiharu Mori ,  Suzuya Yamada ,  Mitsuaki Saito ,  Hirotoshi Hagiwara ,  Kenichi Ehara

IPC: H01J1/148 ,  H01J1/16 ,  H01S3/038 ,  H01J9/04

CPC classification number: H01J1/16 ,  H01J1/148 ,  H01S3/0387

Abstract: A thermionic cathode structure comprises two parallel thermionic electron emitter elements which are made of a heat resistant and electric conductive inorganic compound. Each of them has one end electrically closed and the other end functioning as a current feeding port.

Abstract translation: 热离子阴极结构包括由耐热和导电的无机化合物制成的两个平行的热电子发射体元件。 它们中的每一个具有电闭合的一端，另一端用作电流馈送端口。

公开(公告)号：US4482839A

公开(公告)日：1984-11-13

申请号：US341078

申请日：1982-01-20

Applicant: Tetsuya Wada ,  Masaji Ishii ,  Akira Miyai ,  Hirotoshi Hagiwara

Inventor： Tetsuya Wada ,  Masaji Ishii ,  Akira Miyai ,  Hirotoshi Hagiwara

IPC: H01J1/14 ,  H01J1/148 ,  H01J1/15 ,  H01J1/18 ,  H01J9/04 ,  H01J19/06 ,  H01K1/04

CPC classification number: H01J9/04 ,  H01J1/148 ,  H01J1/15

Abstract: A thermionic emission cathode comprises a cathode tip made of an alkaline earth metal or rare earth metal hexaboride, a metallic support for supporting a base of said cathode tip and a reaction barrier layer comprising colloidal carbon and a reaction barrier material which bonds said cathode tip and said metallic support in one body.

Abstract translation: 热电子发射阴极包括由碱土金属或稀土金属六硼化物制成的阴极尖端，用于支撑所述阴极尖端的基底的金属支撑体和包含胶体碳的反应阻挡层和将所述阴极尖端和 金属支架在一体内。

公开(公告)号：US4430570A

公开(公告)日：1984-02-07

申请号：US213026

申请日：1980-12-04

Applicant: Tadahiro Takigawa ,  Isao Sasaki

Inventor： Tadahiro Takigawa ,  Isao Sasaki

IPC: H01J1/14 ,  H01J1/148 ,  H01J1/15 ,  H01J1/16 ,  H01J3/02 ,  H01J37/06

CPC classification number: H01J1/16 ,  H01J1/148 ,  H01J3/021 ,  H01J37/06

Abstract: A variable shaping type electron beam exposing apparatus is provided which comprises an electron gun which irradiates an electron beam from the front end of a cathode chip; shaping plates having openings of variable shapes for shaping the electron beam irradiated from the electron gun into the shapes of these openings; and an objective lens for focusing the electron beam passed through the shaping plates into a predetermined shape on a sample. In this apparatus, the cathode chip is made of single-crystal lanthanum hexaboride whose axial orientation is , the front end of it is formed into a circular conical shape, and half the vertical angle of the front end is set to be between 60.degree. and 85.degree.. The maximum area of the image on the sample is between 2 to 50 .mu.m.sup.2.

Abstract translation: 提供了一种可变整形型电子束曝光装置，其包括从阴极芯片的前端照射电子束的电子枪; 具有可变形状的开口的成形板，用于将从电子枪照射的电子束成形为这些开口的形状; 以及用于将通过成形板的电子束聚焦到样品上的预定形状的物镜。 在该装置中，阴极芯片由轴向取向为<310>的单晶镧六硼化物制成，其前端形成圆锥形，前端的一半垂直角设定在 60°和85°。 样品上图像的最大面积在2到50平方米之间。

公开(公告)号：US4265666A

公开(公告)日：1981-05-05

申请号：US067365

申请日：1979-08-17

Applicant: Michel Contre ,  Philippe Martin ,  Monique Quetier

Inventor： Michel Contre ,  Philippe Martin ,  Monique Quetier

IPC: H01J1/14 ,  C04B35/563 ,  C04B35/58 ,  H01J1/148 ,  H01J1/15 ,  H01J3/02 ,  C04B35/52 ,  C04B35/50

CPC classification number: C04B35/5805 ,  C04B35/563 ,  H01J1/148 ,  H01J3/029

Abstract: Ceramic material for a low temperature direct heating electron gun cathode, wherein it is constituted by a mixed ceramic material of a hexaboride of a refractory material consisting of at least one substance with a high emissive power from the group consisting of La, Sr, and Ba hexaborides and a conductive material, boron carbide, having a resistivity higher than that of an emissive substance, the structure of the ceramic material resulting from its production by cofritting of the said components.

Abstract translation: 用于低温直接加热电子枪阴极的陶瓷材料，其中由耐火材料的六硼化物的混合陶瓷材料构成，该耐火材料由至少一种具有高发射功率的物质组成，该物质由La，Sr和Ba组成 六硼化物和导电材料，具有比发射物质的电阻率高的电阻率的碳化硼，由其通过所述组分的制成而产生的陶瓷材料的结构。