Dielectric ceramic composition
US8283272B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 27, 2010 |
| Grant date | Oct 9, 2012 |
| Priority date | — |
| Expiry date | Nov 27, 2030 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC04B2235/761
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A purpose of the present invention is to provide a dielectric ceramic composition which is available to obtain a multilayer ceramic capacitor having a high specific permittivity and a small temperature change of capacitance. A dielectric ceramic composition comprises a dielectric main component composed of 86.32 to 97.64 mol % of BaTiO3, 0.01 to 10.00 mol % of Y2O3 and 0.01 to 10.00 mol % of MgO and 0.001 to 0.200 mol % of V2O5, 0.01 to 1.0 mol % of more than one kind of a first additive selected from a group composed of MnO, Cr2O3, Co2O3, 0.5 to 10.0 mol % of a second additive which is {Baα, Ca (1−α)}SiO3 (note, 0≦α≦1), and Sr: 10 to 500 ppm, S: 10 to 50 ppm, Al: 10 to 50 ppm, Fe: 10 to 50 ppm, Zr: 100 to 800 ppm, Y: 10 to 100 ppm, Hf: 10 to 100 ppm to 100 parts by weight of BaTiO3.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.