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27 条记录 (耗时 0.022 秒)

    Impregnated cathode
    2.
    发明授权
    Impregnated cathode 失效
    浸渍阴极

    公开(公告)号：US4400648A

    公开(公告)日：1983-08-23

    申请号：US192870

    申请日：1980-10-01

    申请人： Sadanori Taguchi ,  Yukio Honda ,  Toshiyuki Aida ,  Ushio Kawabe

    发明人： Sadanori Taguchi ,  Yukio Honda ,  Toshiyuki Aida ,  Ushio Kawabe

    IPC分类号： H01J1/28 ,  H01J1/14

    CPC分类号： H01J1/28

    摘要： An impregnated cathode having a complex porous body of one-body construction which is mounted in a metal sleeve and in which a partition layer made of a porous material having a porosity less than 17% is arranged in close contact with an impregnated layer made of a porous material containing an electron emissive material. The aforementioned porous partition layer takes the place of the conventional partition plate of refractory metal. The impregnated cathode according to the present invention can not only have its size reduced without any difficulty but also enjoy a high emission current density with a remarkably small dispersion.

    摘要翻译： 具有安装在金属套筒中的单体结构的复合多孔体的浸渍阴极，其中由孔隙率小于17％的多孔材料制成的分隔层紧密接触于由 含有电子发射材料的多孔材料。 上述多孔分隔层代替常规的难熔金属隔板。 根据本发明的浸渍阴极不仅能够使其尺寸减小而且难以实现，而且还可以获得非常小的色散的高发射电流密度。

    Electron tube cathode and method for producing the same
    3.
    发明授权
    Electron tube cathode and method for producing the same 失效
    电子管阴极及其制造方法

    公开(公告)号：US4260665A

    公开(公告)日：1981-04-07

    申请号：US946194

    申请日：1978-09-27

    申请人： Toshiyuki Aida ,  Sadanori Taguchi ,  Isamu Yuito ,  Ushio Kawabe ,  Shigehiko Yamamoto ,  Yukio Honda ,  Norio Shibata ,  Hiroshi Okano

    发明人： Toshiyuki Aida ,  Sadanori Taguchi ,  Isamu Yuito ,  Ushio Kawabe ,  Shigehiko Yamamoto ,  Yukio Honda ,  Norio Shibata ,  Hiroshi Okano

    IPC分类号： H01J1/26 ,  H01J1/14 ,  H01J1/15 ,  H01J9/04

    CPC分类号： H01J9/04 ,  H01J1/14 ,  Y10T428/12028 ,  Y10T428/12618 ,  Y10T428/12875 ,  Y10T428/12944

    摘要： An electron tube cathode in such a structure comprising a Ni-W-Zr alloy (W content: 20-28 wt. %) having a grain size of 4-10 .mu.m as a base metal, a 1,000-2,000 A-thick Pt film provided on the surface of the base metal, and an electron emitting material layer consisting of alkaline earth metal oxide provided on the Pt film has less emission lowering and less peeling of the electron emitting material layer, even if placed in a long time service. The electron tube cathode can be produced according to a method comprising (i) a step of annealing a base metal of Ni-W-Zr alloy (W content: 20-28 wt. %) at 1,000.degree.-1,200.degree. C., (ii) a step of providing a 1,000-2,000 A thick Pt film on the surface of the base metal, and (iii) a step of providing an electron emitting material layer consisting of alkaline earth metal oxide on the Pt film.

    摘要翻译： 这种结构中的电子管阴极，其特征在于：以贱金属为基准的粒径为4-10μm的Ni-W-Zr合金（W含量：20〜28重量％），1000〜 并且由于设置在Pt膜上的由碱土类金属氧化物构成的电子发射材料层即使放置在长时间的服务中也具有较少的发射降低和较少的电子发射材料层的剥离。 电子管阴极可以根据以下方法制造：（i）在1000-1200℃下退火Ni-W-Zr合金的母材（W含量：20-28重量％）的步骤，（ ii）在母材表面上提供1,000-2,000A厚的Pt膜的步骤，和（iii）在Pt膜上提供由碱土金属氧化物构成的电子发射材料层的步骤。

    Impregnated cathode
    4.
    发明授权
    Impregnated cathode 失效
    浸渍阴极

    公开(公告)号：US4518890A

    公开(公告)日：1985-05-21

    申请号：US456247

    申请日：1983-01-06

    申请人： Sadanori Taguchi ,  Toshiyuki Aida ,  Shigehiko Yamamoto ,  Yukio Honda

    发明人： Sadanori Taguchi ,  Toshiyuki Aida ,  Shigehiko Yamamoto ,  Yukio Honda

    IPC分类号： H01J1/14 ,  H01J1/28 ,  H01J19/06 ,  H01K1/04

    CPC分类号： H01J1/14 ,  H01J1/28

    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℃。

    Impregnated cathode
    7.
    发明授权
    Impregnated cathode 失效
    浸渍阴极

    公开(公告)号：US4737679A

    公开(公告)日：1988-04-12

    申请号：US826339

    申请日：1986-02-05

    申请人： Shigehiko Yamamoto ,  Sadanori Taguchi ,  Toshiyuki Aida ,  Isato Watanabe ,  Susumu Kawase

    发明人： Shigehiko Yamamoto ,  Sadanori Taguchi ,  Toshiyuki Aida ,  Isato Watanabe ,  Susumu Kawase

    IPC分类号： H01J1/14 ,  H01J1/28 ,  H01J19/06 ,  H01K1/04

    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。