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    Method for preparing electroconductive mayenite type compound
    1.
    发明授权
    Method for preparing electroconductive mayenite type compound 有权
    导电钙铝石型化合物的制备方法

    公开(公告)号：US07670585B2

    公开(公告)日：2010-03-02

    申请号：US11948147

    申请日：2007-11-30

    申请人： Hideo Hosono ,  Katsuro Hayashi ,  Sung Wng Kim ,  Masahiro Hirano ,  Satoru Narushima ,  Setsuro Ito

    发明人： Hideo Hosono ,  Katsuro Hayashi ,  Sung Wng Kim ,  Masahiro Hirano ,  Satoru Narushima ,  Setsuro Ito

    IPC分类号： C01F7/16

    CPC分类号： C01F7/164 ,  C01F7/166 ,  C01P2002/50 ,  C01P2002/84 ,  C01P2006/40 ,  C01P2006/60 ,  H01B1/08

    摘要： Provided is a method for preparing an electroconductive mayenite type compound with good properties readily and stably at low cost without need for expensive facilities, a reaction at high temperature and for a long period of time, or complicated control of reaction.A method for preparing an electroconductive mayenite type compound comprises a step of subjecting a precursor to heat treatment, wherein the precursor contains Ca and/or Sr, and Al, a molar ratio of (a total of CaO and SrO:Al2O3) is from (12.6:6.4) to (11.7:7.3) as calculated as oxides, a total content of CaO, SrO and Al2O3 in the precursor is at least 50 mol %, and the precursor is a vitreous or crystalline material; and the method comprises a step of mixing the precursor with a reducing agent and performing the heat treatment of holding the mixture at 600-1,415° C. in an inert gas or vacuum atmosphere with an oxygen partial pressure of at most 10 Pa.

    摘要翻译： 本发明提供一种低成本地容易且稳定地制备具有良好性能的导电性钙铝石型化合物的方法，而不需要昂贵的设备，高温反应和长时间的反应或复杂的反应控制。 制备导电性钙铝石型化合物的方法包括使前体进行热处理的步骤，其中前体含有Ca和/或Sr，和Al，（CaO和SrO：Al 2 O 3的总和）的摩尔比为（ 12.6：6.4）至（11.7：7.3），前体中CaO，SrO和Al2O3的总含量为至少50摩尔％，前体为玻璃态或结晶性材料; 该方法包括将前体与还原剂混合并在氧分压至多10Pa的惰性气体或真空气氛中进行600-1,415℃保持混合物的热处理的步骤。

    METHOD FOR PREPARING ELECTROCONDUCTIVE MAYENITE TYPE COMPOUND
    4.
    发明申请
    METHOD FOR PREPARING ELECTROCONDUCTIVE MAYENITE TYPE COMPOUND 有权
    制备电极型MAYENITE型化合物的方法

    公开(公告)号：US20080095688A1

    公开(公告)日：2008-04-24

    申请号：US11948147

    申请日：2007-11-30

    申请人： Hideo Hosono ,  Katsuro Hayashi ,  Sung Kim ,  Masahiro Hirano ,  Satoru Narushima ,  Setsuro Ito

    发明人： Hideo Hosono ,  Katsuro Hayashi ,  Sung Kim ,  Masahiro Hirano ,  Satoru Narushima ,  Setsuro Ito

    IPC分类号： C01F17/00 ,  C01F11/02 ,  C01F7/00

    CPC分类号： C01F7/164 ,  C01F7/166 ,  C01P2002/50 ,  C01P2002/84 ,  C01P2006/40 ,  C01P2006/60 ,  H01B1/08

    摘要： Provided is a method for preparing an electroconductive mayenite type compound with good properties readily and stably at low cost without need for expensive facilities, a reaction at high temperature and for a long period of time, or complicated control of reaction. A method for preparing an electroconductive mayenite type compound comprises a step of subjecting a precursor to heat treatment, wherein the precursor contains Ca and/or Sr, and Al, a molar ratio of (a total of CaO and SrO:Al2O3) is from (12.6:6.4) to (11.7:7.3) as calculated as oxides, a total content of CaO, SrO and Al2O3 in the precursor is at least 50 mol %, and the precursor is a vitreous or crystalline material; and the method comprises a step of mixing the precursor with a reducing agent and performing the heat treatment of holding the mixture at 600-1,415° C. in an inert gas or vacuum atmosphere with an oxygen partial pressure of at most 10 Pa.

    摘要翻译： 本发明提供一种低成本地容易且稳定地制备具有良好性能的导电性钙铝石型化合物的方法，而不需要昂贵的设备，高温反应和长时间的反应或复杂的反应控制。 制备导电性钙铝石型化合物的方法包括以下步骤：将前体进行热处理，其中前体含有Ca和/或Sr，和Al，（CaO和SrO：Al 2的总和的摩尔比 （12.6:4.4）至（11.7:7.3）按氧化物计算，CaO，SrO和Al 2 O 2的总含量 前体中的3 <3>至少为50摩尔％，前体是玻璃状或结晶的材料; 该方法包括将前体与还原剂混合并在氧分压至多10Pa的惰性气体或真空气氛中进行600-1,415℃保持混合物的热处理的步骤。

    ELECTRON EMITTER, FIELD EMISSION DISPLAY UNIT, COLD CATHODE FLUORESCENT TUBE, FLAT TYPE LIGHTING DEVICE, AND ELECTRON EMITTING MATERIAL
    7.
    发明申请
    ELECTRON EMITTER, FIELD EMISSION DISPLAY UNIT, COLD CATHODE FLUORESCENT TUBE, FLAT TYPE LIGHTING DEVICE, AND ELECTRON EMITTING MATERIAL 审中-公开
    电子发射器，场发射显示单元，冷阴极荧光管，平面照明装置和电子发射材料

    公开(公告)号：US20080252194A1

    公开(公告)日：2008-10-16

    申请号：US11874437

    申请日：2007-10-18

    申请人： Yutaka KUROIWA ,  Satoru Narushima ,  Setsuro Ito

    发明人： Yutaka KUROIWA ,  Satoru Narushima ,  Setsuro Ito

    IPC分类号： H01J1/62 ,  H01J1/02 ,  C04B35/00

    CPC分类号： H01J1/304 ,  H01J9/025 ,  H01J31/127 ,  H01J63/02 ,  H01J2201/30446

    摘要： To provide an electron emitter, a field emission display unit, a cold cathode fluorescent tube and a flat type lighting device, which employ an electron emitting material producible at a low cost and in a large amount.A conductive mayenite type compound powder containing at least 50 mol % of a mayenite type compound represented by a chemical formula of either 12CaO.7Al2O3 or 12SrO.7Al2O3 and having a maximum particle size of at most 100 μm, is used as an electron emitter, whereby an electron emitter, a field emission display unit, a cold cathode fluorescent tube and a flat type lighting device, are realized that are easy to produce and capable of emitting electrons even at a low applied voltage and whereby a large current can be obtained per the same applied voltage surface.

    摘要翻译： 提供一种电子发射器，场发射显示单元，冷阴极荧光管和平面照明装置，其采用可以低成本和大量生产的电子发射材料。 一种含有至少50mol％由化学式表示的钙铝石型化合物的导电钙铝石型化合物粉末，其化学式为12CaO.7Al 2 O 3 3或12SrO.7Al