发明申请
- 专利标题: DIELECTRIC CERAMIC COMPOSITION AND CERAMIC ELECTRONIC COMPONENT
- 专利标题(中): 电介质陶瓷组合物和陶瓷电子元件
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申请号: US13037739申请日: 2011-03-01
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公开(公告)号: US20110216473A1公开(公告)日: 2011-09-08
- 发明人: Kosuke Takano , Tomohisa Fukuoka , Makoto Maeda , Yuhta Matsunaga , Masahide Ishizuya , Tamotsu Ishiyama , Takahiro Yamada
- 申请人: Kosuke Takano , Tomohisa Fukuoka , Makoto Maeda , Yuhta Matsunaga , Masahide Ishizuya , Tamotsu Ishiyama , Takahiro Yamada
- 申请人地址: JP Tokyo
- 专利权人: TDK CORPORATION
- 当前专利权人: TDK CORPORATION
- 当前专利权人地址: JP Tokyo
- 优先权: JP2010-049498 20100305; JP2011-008689 20110119
- 主分类号: H01G4/06
- IPC分类号: H01G4/06 ; C04B35/48 ; C04B35/465 ; C04B35/47 ; C04B35/468
摘要:
A dielectric ceramic composition includes a compound having perovskite type crystal structure shown by a general formula ABO3, where A is at least one selected from Ba, Ca and Sr, and B is at least one selected from Ti and Zr, as a main component. The dielectric ceramic composition includes, as subcomponents, with respect to 100 moles of the compound, 1.0 to 2.5 moles of an oxide of RA (Dy, Gd and Tb); 0.2 to 1.0 mole of an oxide of RB (Ho and Y); 0.1 to 1.0 mole of an oxide of RC (Yb and Lu); 0.8 to 2.0 moles of Mg oxide and 1.2 to 3.0 moles of an oxide including Si in terms of RA2O3, RB2O3, RC2O3, Mg and Si, respectively. Also, when contents of the oxide of RA, RB and RC with respect to 100 moles of the compound are defined as “α”, “β” and “γ”, respectively, the “α”, “β” and “γ” satisfy relations of 2.5≦(α/β)≦5.0 and 1.0≦(β/γ)≦10.0. According to the present invention, a dielectric ceramic composition having good properties can be provided.
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