公开(公告)号：US20200258668A1

公开(公告)日：2020-08-13

申请号：US16750434

申请日：2020-01-23

Applicant: TDK CORPORATION

Inventor： Takeshi SHIBAYAMA ,  Takashi SUZUKI ,  Yukio TAKAHASHI

IPC: H01F1/34 ,  H01F27/255 ,  H01F17/00 ,  C04B35/26

Abstract: A ferrite composition includes main-phase particles, first sub-phase particles, second sub-phase particles, and a grain boundary. At least 10% or more of the main-phase particles contain a portion whose Zn concentrations monotonously decrease from a particle surface toward a particle central part along a length of 50 nm or more. The first sub-phase particles contain Zn2SiO4. The second sub-phase particles contain SiO2. A total area ratio of the first sub-phase particles and the second sub-phase particles is 30.5% or more.

公开(公告)号：US20170025226A1

公开(公告)日：2017-01-26

申请号：US15215237

申请日：2016-07-20

Applicant: TDK CORPORATION

Inventor： Kouichi KAKUDA ,  Takashi SUZUKI ,  Masaki TAKAHASHI ,  Yukio TAKAHASHI ,  Shinichi KONDO ,  Asuka MURAI ,  Akihiko OIDE ,  Naoki UCHIDA ,  Hidekazu SATO

IPC: H01G4/40 ,  C04B37/00 ,  C04B35/462 ,  C04B35/453 ,  H01F1/03 ,  C04B35/47

CPC classification number: H01G4/40 ,  B32B18/00 ,  C04B35/265 ,  C04B35/453 ,  C04B35/462 ,  C04B35/47 ,  C04B2235/3232 ,  C04B2235/3236 ,  C04B2235/3262 ,  C04B2235/3279 ,  C04B2235/3281 ,  C04B2235/3284 ,  C04B2235/3409 ,  C04B2235/365 ,  C04B2235/6025 ,  C04B2237/34 ,  C04B2237/346 ,  H01F1/0306 ,  H01F1/0315 ,  H01F1/344 ,  H01F17/0013 ,  H01F27/255 ,  H01F2017/0026

Abstract: Composite electronic including coil, capacitor and intermediate parts, wherein coil part includes coil-conductor and magnetic-layer, capacitor part includes internal electrodes and dielectric-layer, which contains SrO—TiO2 or ZnO—TiO2 based oxide, intermediate part between coil and capacitor parts, intermediate part includes intermediate material layer, which contains ZnO, TiO2 and boron, ZnO contained in intermediate material layer 50-85 parts by mole and TiO2 contained the intermediate material layer 15-50 parts by mole when total content of ZnO and TiO2 in intermediate material layer is 100 parts by mole, content boron in intermediate material layer is 0.1-5.0 parts by weight of B2O3 when total of ZnO and TiO2 in intermediate material layer set to 100 parts by weight, part of ZnO and TiO2 intermediate material layer constitute ZnO—TiO2 compound, which in intermediate material layer is 50 wt % or more when total weight of ZnO and TiO2 in intermediate material layer is set to 100 wt %.

Abstract translation: 包括线圈，电容器和中间部件的复合电子器件，其中线圈部分包括线圈导体和磁层，电容器部分包括内部电极和介电层，其包含SrO-TiO2或ZnO-TiO2基氧化物，线圈和电容器之间的中间部分 中间部分包括中间材料层，其含有ZnO，TiO 2和硼，中间材料层中所含的ZnO为50-85份摩尔，当TiO 2和ZnO的总含量为 中间材料层为100份摩尔，中间材料层中的硼含量为0.1-5.0重量份的B2O3，当中间材料层中的ZnO和TiO 2的总量设定为100重量份时，部分ZnO和TiO 2中间材料层构成 ZnO-TiO2化合物，当中间材料层中的ZnO和TiO 2的总重量设定为10时，其在中间材料层中的重量比为50重量％ 0重量％。

公开(公告)号：US20150102254A1

公开(公告)日：2015-04-16

申请号：US14508499

申请日：2014-10-07

Applicant: TDK CORPORATION

Inventor： Ryuichi WADA ,  Kouichi KAKUDA ,  Yukari AKITA ,  Yukio TAKAHASHI ,  Yusuke NAGAI ,  Takashi SUZUKI ,  Takahiro SATO

IPC: H01F1/01 ,  H01F27/28

CPC classification number: H01F1/01 ,  C04B35/62625 ,  C04B35/62675 ,  C04B35/62695 ,  C04B35/63416 ,  C04B2235/3275 ,  C04B2235/3279 ,  C04B2235/3281 ,  C04B2235/3284 ,  C04B2235/3293 ,  C04B2235/3298 ,  C04B2235/604 ,  C04B2235/608 ,  C04B2235/77 ,  H01F1/344 ,  H01F3/08 ,  H01F17/0013 ,  H01F17/04 ,  H01F27/2804 ,  H01F38/14 ,  H01F2027/2809

Abstract: A ferrite composition comprises a main component and a sub component. The main component is comprised of 40.0 to 49.8 mol % iron oxide in terms of Fe2O3, 5.0 to 14.0 mol % copper oxide in terms of CuO, 0 to 32.0 mol % zinc oxide in terms of ZnO, and a remaining part of nickel oxide. The sub component includes 0.5 to 4.0 wt % tin oxide in terms of SnO2, 0.10 to 1.00 wt % bismuth oxide in terms of Bi2O3, and 0.21 to 3.00 wt % cobalt oxide in terms of Co3O4, with respect to the main component.

Abstract translation: 铁素体组合物包括主要组分和副组分。 主成分由Fe2O3为40.0〜49.8摩尔％的氧化铁，以CuO换算为5.0〜14.0摩尔％的氧化铜，换算成氧化锌为0〜32.0摩尔％，还有部分为氧化镍。 副成分相对于主成分，以SnO 2计，氧化锡为0.5〜4.0重量％，氧化铋为0.10〜1.00重量％，氧化铋换算为氧化铋为0.21〜3.00重量％。