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DIELECTRIC CERAMICS, AND LAMINATED CERAMIC CAPACITOR
A dielectric ceramic contains a BaTiO3-based compound as a main ingredient, and can be represented by the general formula: 100AmBO3+aNiO+bROn+cMOv+dMgO+eXOw where R represents a rare earth element such as Dy, M represents a metal element such as Mn, and X represents a sintering aid component containing Si. Ni is uniformly solid-solved in crystal grains, and the solid-solution region of the rare earth element in the crystal grains is an average 10% or less in terms of a cross section ratio. 0.96!<=m!<=1.030, 0.05!<=a!<=3, 0.1!<=b!<=1.5, 0.1!<=c!<=1.0, 0.1!<=d!<=1.5, and 0.05!<=e!<=3.5 are satisfied. A laminated ceramic capacitor has dielectric layers formed of the dielectric ceramic. As a result, a dielectric ceramic, and a laminated ceramic capacitor having excellent AC voltage characteristics, capable of keeping desired dielectric characteristics and excellent temperature characteristics, and having excellent withstand voltage and capable of ensuring reliability can be realized.
DIELECTRIC CERAMICS, AND LAMINATED CERAMIC CAPACITOR
A dielectric ceramic contains a BaTiO3-based compound as a main ingredient, and can be represented by the general formula: 100AmBO3+aNiO+bROn+cMOv+dMgO+eXOw where R represents a rare earth element such as Dy, M represents a metal element such as Mn, and X represents a sintering aid component containing Si. Ni is uniformly solid-solved in crystal grains, and the solid-solution region of the rare earth element in the crystal grains is an average 10% or less in terms of a cross section ratio. 0.96!<=m!<=1.030, 0.05!<=a!<=3, 0.1!<=b!<=1.5, 0.1!<=c!<=1.0, 0.1!<=d!<=1.5, and 0.05!<=e!<=3.5 are satisfied. A laminated ceramic capacitor has dielectric layers formed of the dielectric ceramic. As a result, a dielectric ceramic, and a laminated ceramic capacitor having excellent AC voltage characteristics, capable of keeping desired dielectric characteristics and excellent temperature characteristics, and having excellent withstand voltage and capable of ensuring reliability can be realized.
DIELECTRIC CERAMICS, AND LAMINATED CERAMIC CAPACITOR
TAKEHISA SASABAYASHI (author) / TOMOYUKI NAKAMURA (author) / MASAYUKI ISHIHARA (author) / TAKAYUKI YAO (author)
2015-12-09
Patent
Electronic Resource
English
IPC:
C04B
Kalk
,
LIME
| European Patent Office | 2016
DIELECTRIC CERAMIC COMPOSITION, CAPACITOR, AND MULTILAYER LAMINATED CERAMIC CAPACITOR
| European Patent Office | 2019