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    • 37. 发明授权
    • Laminated ceramic capacitor
    • 层压陶瓷电容器
    • US08383535B2
    • 2013-02-26
    • US12989406
    • 2009-04-24
    • Katsuyoshi Yamaguchi
    • Katsuyoshi Yamaguchi
    • H01G4/018C04B35/468
    • H01G4/1227C04B35/46H01G4/30
    • A laminated ceramic capacitor includes a capacitor body of alternately stacked dielectric layers and internal electrode layers, and an external electrode provided on the end face of the capacitor body on which the internal electrode layer is exposed. The dielectric layer has a crystal phase composed mainly of barium titanate and having a cubic system crystal structure. The grain diameter of crystal grains constituting the crystal phase is 0.05 to 0.2 pm. The dielectric layer is formed of a ceramic containing, per mole of barium, 0.0014 to 0.03 moles yttrium, 0.0002 to 0.045 moles manganese, 0.0075 to 0.04 moles magnesium and 0.025 to 0.18 moles ytterbium. The dielectric bonding material is formed of a ceramic containing the same components as those of the main crystal phase of the dielectric ceramic constituting the dielectric layer.
    • 叠层陶瓷电容器包括交替堆叠的电介质层和内部电极层的电容器主体,以及设置在电容器主体的其上露出内部电极层的端面上的外部电极。 电介质层具有主要由钛酸钡构成并具有立方体系晶体结构的结晶相。 构成结晶相的晶粒的粒径为0.05〜0.2μm。 电介质层由每摩尔钡含有0.0014至0.03摩尔钇,0.0002至0.045摩尔锰,0.0075至0.04摩尔镁和0.025至0.18摩尔镱的陶瓷形成。 介电接合材料由包含与构成电介质层的电介质陶瓷的主晶相相同成分的陶瓷形成。