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    Cathode component for discharge lamp
    1.
    发明授权
    Cathode component for discharge lamp 有权
    放电灯用阴极元件

    公开(公告)号：US09030100B2

    公开(公告)日：2015-05-12

    申请号：US14378983

    申请日：2013-02-13

    Applicant: Kabushiki Kaisha Toshiba ,  Toshiba Materials Co., Ltd.

    Inventor： Hitoshi Aoyama ,  Masahiro Tatesawa ,  Noboru Kitamori

    IPC: H01J61/073 ,  H01J17/06 ,  H01J61/067

    CPC classification number: H01J61/0677 ,  H01J9/003 ,  H01J61/0675 ,  H01J61/0735 ,  H01J61/0737 ,  H01J2893/0019

    Abstract: A highly durable cathode component for a discharge lamp is provided. A cathode component for a discharge lamp includes a barrel having a wire diameter of 2 to 35 mm and a tapered front end, wherein the cathode component comprises a tungsten alloy containing 0.5 to 3% by weight, in terms of oxide (ThO2), of a thorium component, not less than 90% of tungsten crystals are accounted for by tungsten crystals having a grain size in the range of 1 to 80 μm, as observed in terms of an area ratio of 300 μm×300 μm in unit area in a circumferential cross section of the barrel, and are accounted for by tungsten crystals having a grain size in the range of 10 to 120 μm, as observed in terms of an area ratio of 300 μm×300 μm in unit area in a side cross section of the barrel.

    Abstract translation: 提供了用于放电灯的高度耐用的阴极组件。 一种用于放电灯的阴极部件包括具有2至35mm的线直径的筒体和锥形前端，其中所述阴极部件包括以氧化物（ThO 2）计含有0.5至3重量％的钨合金， 如果观察到的晶体尺寸在1〜80μm范围内的钨晶体，则不少于90％的钨晶体的钍成分以单位面积的面积比为300μm×300μm 并且由晶粒尺寸在10〜120μm范围内的钨晶体所考虑的，就侧面截面的单位面积的面积比为300μm×300μm而言， 桶。

    CATHODE COMPONENT FOR DISCHARGE LAMP
    2.
    发明申请
    CATHODE COMPONENT FOR DISCHARGE LAMP 有权
    用于放电灯的阴极组件

    公开(公告)号：US20150028738A1

    公开(公告)日：2015-01-29

    申请号：US14378983

    申请日：2013-02-13

    Applicant: KABUSHIKI KAISHA TOSHIBA ,  TOSHIBA MATERIALS CO., LTD.

    Inventor： Hitoshi Aoyama ,  Masahiro Tatesawa ,  Noboru Kitamori

    IPC: H01J61/067 ,  H01J61/073

    CPC classification number: H01J61/0677 ,  H01J9/003 ,  H01J61/0675 ,  H01J61/0735 ,  H01J61/0737 ,  H01J2893/0019

    Abstract: A highly durable cathode component for a discharge lamp is provided. A cathode component for a discharge lamp includes a barrel having a wire diameter of 2 to 35 mm and a tapered front end, wherein the cathode component comprises a tungsten alloy containing 0.5 to 3% by weight, in terms of oxide (ThO2), of a thorium component, not less than 90% of tungsten crystals are accounted for by tungsten crystals having a grain size in the range of 1 to 80 μm, as observed in terms of an area ratio of 300 μm×300 μm in unit area in a circumferential cross section of the barrel, and are accounted for by tungsten crystals having a grain size in the range of 10 to 120 μm, as observed in terms of an area ratio of 300 μm×300 μm in unit area in a side cross section of the barrel.

    Abstract translation: 提供了用于放电灯的高度耐用的阴极组件。 一种用于放电灯的阴极部件包括具有2至35mm的线直径的筒体和锥形前端，其中所述阴极部件包括以氧化物（ThO 2）计含有0.5至3重量％的钨合金， 如果观察到的晶体尺寸在1〜80μm范围内的钨晶体，则不少于90％的钨晶体的钍成分以单位面积的面积比为300μm×300μm 并且由晶粒尺寸在10〜120μm范围内的钨晶体所考虑的，就侧面截面的单位面积的面积比为300μm×300μm而言， 桶。

    Iridium-sheathed wire for electron tubes
    3.
    发明授权
    Iridium-sheathed wire for electron tubes 失效
    用于电子管的铱护套线

    公开(公告)号：US3271849A

    公开(公告)日：1966-09-13

    申请号：US32254163

    申请日：1963-11-08

    Applicant: INT NICKEL CO

    Inventor： GEORGE PRICE EDWARD

    IPC: B21C37/04 ,  B22F7/06 ,  B23K20/233 ,  B32B15/01 ,  H01B1/02 ,  H01J19/00 ,  H01J19/30

    CPC classification number: H01J19/00 ,  B21C37/042 ,  B22F7/06 ,  B23K20/233 ,  B32B15/018 ,  H01B1/02 ,  H01J19/30 ,  H01J2893/0019 ,  H01J2893/002 ,  H01J2893/0022 ,  H01J2893/0023 ,  Y10T428/12063 ,  Y10T428/12833 ,  Y10T428/12875

    Abstract: A method of producing iridium coated tungsten or molybdenum wire, e.g. for use in grids of electron discharge tubes, comprises inserting into a tube of sintered iridium powder having a V.P.N. of from 220-310 a core of tungsten or molybdenum having a V.P.N. of 480/540 or 330/400 respectively and swaging the filled tube to rod and drawing the rod to wire. In a first example iridium powder having a surface area of 0.3 m.2/gm. is compacted about a 0.25 inch diameter polished mild steel former under hydrostatic pressure of 15 tons/inch2. The former is flange at one end and the powder is supported by a latex sheath. The compact 4 inches long and having 0.25 inch and 0.375 inch inside and outside diameters respectively is sintered in vacuum at 1500 DEG C. to give a density of 18 gms./cm.3. A sintered tungsten rod of a density of 15-16 gms./cm.3 is ground to produce a sliding fit and inserted into the compact, the assembly being subsequently swaged at 1500 DEG C. to 0.125 inch diameter rod, hot drawn at 750-650 DEG C. to 0.10 inch diameter wire, drawn at 600 DEG C. to 0.02 inch diameter and finally at 550-500 DEG C. to 0.01 inch diameter wire. The drawing rate initially is from 1-2 ft./min. to about 12 ft./min. at a diameter of 0.02 inch. The thickness of the iridium sheath is usually 0.001-0.002 inch but may be 0.0005 inch and the hardness of the iridium and tungsten 582 V.P.N. and 803 V.P.N. respectively. Plugs of iridium may be used to plug the tube if the heating is carried out under oxidizing conditions. In a second example a rod of swaged and drawn molybdenum containing 0.5% titanium and having a hardness of 375 V.P.N. is inserted in the tube, the ends plugged with iridium and the assembly hot-swaged and hot-drawn to a final diameter of 0.012 inch and a core diameter of 0.005 inch. The iridium and molybdenum hardness values were 698 V.P.N. and 386 V.P.N. respectively. The tensile strengths of the tube and core are preferably between 5000/12,000 p.s.i. and the density of the iridium, tungsten and molybdenum 16 to 20; 14 to 17 and 10.2 gms./cm.3 respectively. It is stated that no fusing bond exists between the metal core and the iridium sheath which can be easily peeled therefrom.

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