Hexagonal-bipyramid crystalline scandium oxide powder and a process for
preparing the same
    3.
    发明授权
    Hexagonal-bipyramid crystalline scandium oxide powder and a process for preparing the same 失效
    六角双晶结晶钪氧化物粉末及其制备方法

    公开(公告)号:US4980141A

    公开(公告)日:1990-12-25

    申请号:US198303

    申请日:1988-05-25

    CPC classification number: H01J35/06 C01F17/0043 H01J1/14 H01J1/144 C01P2004/42

    Abstract: Hexagonal-bipyramid crystalline scandium oxide powder and a process for preparing the same are disclosed. The process comprises forming scandium oxalate from an acid aqueous solution containing scandium in the presence of chloride ions and ammonium ions, collecting the precipitate and heating the collected precipitate. Hexagonal-bipyramid crystalline scandium oxide is useful for making electron gun for cathode ray tubes.

    Abstract translation: 公开了六角双脒结晶钪氧化物粉末及其制备方法。 该方法包括在氯离子和铵离子存在下从含有钪的酸性水溶液中形成草酸钪,收集沉淀物并加热收集的沉淀物。 六角双吡啶结晶钪氧化物可用于制造阴极射线管的电子枪。

    Method of manufacturing rhenium alloy emission filaments
    5.
    发明授权
    Method of manufacturing rhenium alloy emission filaments 有权
    制造铼合金发射丝的方法

    公开(公告)号:US08226449B2

    公开(公告)日:2012-07-24

    申请号:US13199136

    申请日:2011-08-19

    Abstract: A new Rhenium alloy usable for improving the performance of emission filaments used in mass spectrometers or other similar scientific instruments, which is made by adding low level concentrations of Yttrium Oxide to Rhenium of less than 10%. This new alloy has demonstrated superior performance characteristics compared to pure Rhenium for this purpose. Filaments made from the Yttria/Rhenium alloy exhibit the same voltage, current and emission properties as Rhenium but have the added advantage of greatly decreasing warping during use. The Rhenium alloy filaments are usable with various shapes and configurations including straight filaments, multiple coiled filaments and pin shaped filaments. Electron microscopy and microscopy studies verify that the Yttria/Rhenium material of the new alloy has a smaller grain size and increased strength when compared to pure Rhenium, which accounts for the enhanced structural strength.

    Abstract translation: 一种新的铼合金,可用于提高质谱仪或其他类似科学仪器中使用的发射丝的性能,这是通过向低于10%的铼添加低浓度的氧化钇而制成的。 与此相比,这种新型合金具有优异的性能特征。 由钇/铼合金制成的丝具有与铼相同的电压,电流和发射特性,但具有在使用过程中大大降低翘曲的附加优点。 铼合金丝可用于各种形状和构型,包括直丝,多丝线和针形丝。 电子显微镜和显微镜研究证实,与纯铼相比,新合金的氧化钇/铼材料具有更小的晶粒尺寸和增加的强度,这增加了结构强度。

    Emissive electrode materials for electric lamps and methods of making
    6.
    发明授权
    Emissive electrode materials for electric lamps and methods of making 失效
    电灯用发光电极材料及制作方法

    公开(公告)号:US07786661B2

    公开(公告)日:2010-08-31

    申请号:US12134465

    申请日:2008-06-06

    CPC classification number: H01J61/0675 H01J1/144 H01J61/0737 H01J61/12

    Abstract: Electron emissive compositions comprising a barium neodymium oxide are described. These compositions may be applied to electrodes such that electron emission is facilitated. Methods of manufacturing emissive electrodes comprising a barium neodymium oxide are also described. Various discharge lamps employing such electrodes are described as well.

    Abstract translation: 描述了包含钡钕氧化物的电子发射组合物。 这些组合物可以施加到电极,使得电子发射被促进。 还描述了制造包含钡钕氧化物的发射电极的方法。 还描述了采用这种电极的各种放电灯。

    Cathode and process for producing the same

    公开(公告)号:US06559582B2

    公开(公告)日:2003-05-06

    申请号:US09971226

    申请日:2001-10-03

    CPC classification number: H01J1/144

    Abstract: There is provided a cathode which is easily operable, harmless, and stable at high temperature at least 1,400° C. as well as excellent in electron emission characteristics at the same time, and the process for preparing the same. The cathode of the present invention comprises a polycrystalline substance or a polycrystalline porous substance of high-melting point metal material and an emitter material dispersed into said polycrystalline substance or polycrystalline porous substance in an amount of 0.1 to 30% by weight in the cathode, wherein the emitter material comprises at least one selected from the group consisting of hafnium oxide, zirconium oxide, lanthanum oxide, cerium oxide and titanium oxide.

    Electron emission materials and components
    8.
    发明授权
    Electron emission materials and components 失效
    电子发射材料和组件

    公开(公告)号:US06190579B1

    公开(公告)日:2001-02-20

    申请号:US09435508

    申请日:1999-11-08

    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. The electron emission materials include ternary Group IVB-IIIB, IVB-IIA, and IIIB-IIA oxides and quaternary Group IVB-IIIB-IIA oxides. These electron emission materials are typically contained in a refractory metal matrix formed of tungsten, molybdenum, 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。 电子发射材料包括IVB-IIIB族,IVB-IIA族和IIIB-IIA族氧化物,IVB-IIIB-IIA族四元族氧化物。 这些电子发射材料通常包含在由钨,钼,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。

    Cathode for electron tube
    9.
    发明授权
    Cathode for electron tube 失效
    电子管阴极

    公开(公告)号:US5977699A

    公开(公告)日:1999-11-02

    申请号:US5007

    申请日:1998-01-09

    CPC classification number: H01J1/144

    Abstract: A cathode for an electron tube, includes a base metal having nickel as a main component, and an electron emitting material layer containing an alkaline earth metal oxide having barium oxide as a main component, wherein a metal layer having zirconium as a main component is located between the base metal and the electron emitting material layer. The cathode has an excellent initial electron emitting characteristic and can emit a large quantity of electrons for a long time. Therefore, the cathode is suitable for a larger and higher-definition CRT.

    Abstract translation: 电子管的阴极包括以镍为主要成分的母材和含有以氧化钡为主要成分的碱土金属氧化物的电子发射材料层,其中以锆为主要成分的金属层位于 在贱金属和电子发射材料层之间。 阴极具有优异的初始电子发射特性,并且可以长时间发射大量的电子。 因此,阴极适用于更大和更高清晰度的CRT。

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