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    SINTERED FERRITE PLATE AND SINTERED FERRITE SHEET
    1.
    发明公开
    SINTERED FERRITE PLATE AND SINTERED FERRITE SHEET 审中-公开

    公开(公告)号：EP3147270A4

    公开(公告)日：2018-01-24

    申请号：EP15796179

    申请日：2015-05-21

    申请人： TODA KOGYO CORP

    发明人： OKANO YOJI ,  SADAI MAKOTO ,  HONDA SHINGO ,  KURUMADA MITSUNORI ,  YOSHIDA AKIHIRO ,  KAWATO KAZUYOSHI

    IPC分类号： C04B35/30 ,  H05K9/00

    CPC分类号： H01F1/342 ,  C04B35/2666 ,  C04B2235/3274 ,  C04B2235/3275 ,  C04B2235/3279 ,  C04B2235/3282 ,  C04B2235/3284 ,  C04B2235/96 ,  H05K9/00 ,  H05K9/0075

    摘要： The present invention relates to a ferrite sintered plate having a composition comprising 47 to 50 mol% of Fe 2 O 3 , 7 to 26 mol% of NiO, 13 to 36 mol% of ZnO, 7 to 12 mol% of CuO and 0 to 1.5 mol% of CoO, as calculated in terms of the respective oxides, in which the ferrite sintered plate has a volume resistivity of 1 x 10 8 to 1 x 10 12 ©cm and a thickness of 10 to 60 µ m; and a ferrite sintered sheet comprising the ferrite sintered plate on a surface of which a groove or grooves are formed, and an adhesive layer and/or a protective layer formed on the ferrite sintered plate, in which the ferrite sintered sheet has a magnetic permeability at 500 kHz a real part of which is 120 to 800 and an imaginary part of which is 0 to 30, and a product ( µ m) of the real part of the magnetic permeability at 500 kHz of the ferrite sintered sheet and a thickness of the ferrite sintered plate is 5000 to 48000. The ferrite sintered plate and the ferrite sintered sheet according to the present invention have a high volume resistivity as well as a large µ ' value and a small µ " value of a magnetic permeability thereof, and therefore can be suitably used as a shielding plate in a digitizer system.

    FERRITE SINTERED BODY, FERRITE SINTERED PLATE, AND FERRITE SINTERED SHEET
    2.
    发明公开
    FERRITE SINTERED BODY, FERRITE SINTERED PLATE, AND FERRITE SINTERED SHEET 有权
    SINTERKÖRPERAUS FERRIT，GESINTERTE FERRITISCHE PLATTE UND GESINTERTES FERRITISCHES BLECH

    公开(公告)号：EP3064481A4

    公开(公告)日：2017-07-05

    申请号：EP14858963

    申请日：2014-10-30

    申请人： TODA KOGYO CORP

    发明人： OKANO YOJI ,  DOTE TOMOHIRO ,  SADAI MAKOTO ,  HONDA SHINGO ,  NAKAI KATSUMI ,  FUJII YASUHIKO

    IPC分类号： C04B35/30 ,  C04B35/26 ,  C04B35/626 ,  C04B35/638 ,  H01F1/10 ,  H01F1/34 ,  H01Q1/24 ,  H01Q1/38

    CPC分类号： H01F1/10 ,  C04B35/26 ,  C04B35/62625 ,  C04B35/62675 ,  C04B35/638 ,  C04B2235/3272 ,  C04B2235/3275 ,  C04B2235/3279 ,  C04B2235/3281 ,  C04B2235/3284 ,  C04B2235/6025 ,  C04B2235/72 ,  C04B2235/726 ,  C04B2235/77 ,  H01F1/344 ,  H01Q1/243 ,  H01Q1/38

    摘要： An object or technical task of the present invention is to provide a ferrite sintered sheet having a dense ferrite microfine structure which has a large µ ' value, a small µ " value, and a small temperature-dependent change of the µ ' value thereof. The present invention relates to a ferrite ceramics having a composition comprising 47.5 to 49.8 mol% of Fe 2 O 3 , 13.5 to 19.5 mol% of NiO, 21 to 27 mol% of ZnO, 7.5 to 12.5 mol% of CuO and 0.2 to 0.8 mol% of CoO, all of the molar amounts being calculated in terms of the respective oxides, the ferrite ceramics further comprising 0.2 to 1.4% by weight of SnO 2 and 0.005 to 0.03% by weight of S and having a density of 5.05 to 5.30 g/cm 3 ; and a ferrite sintered sheet comprising the ferrite sintered plate on a surface of which a groove or grooves are formed, and an adhesive layer and/or a protective layer formed on the ferrite sintered plate.

    摘要翻译： 本发明的目的或技术任务是提供具有μ'值大，μ'值小，μ'值的温度依赖性变化小的致密的铁素体微细结构的铁氧体烧结片。 本发明涉及一种铁氧体陶瓷，其组成包括47.5〜49.8摩尔％的Fe 2 O 3，13.5〜19.5摩尔％的NiO，21〜27摩尔％的ZnO，7.5〜12.5摩尔％的CuO和0.2〜0.8 摩尔％的CoO，全部摩尔量以各自的氧化物计算，所述铁氧体陶瓷还包含0.2-1.4重量％的SnO 2和0.005-0.03重量％的S并具有5.05-5.30的密度 g / cm 3;以及铁氧体烧结片，其包括在其表面上形成一个或多个沟槽的铁氧体烧结板，以及形成在铁氧体烧结板上的粘合层和/或保护层。