| 简介 |
PROBLEM TO BE SOLVED : To provide a dielectric porcelain composition and an electronic component which have reduced amount of electrostriction and can improve IR life. SOLUTION : The dielectric porcelain composition has a main component containing BaTiO3, and a first subcomponent containing BaZrO3, a second subcomponent containing Mg oxide, a third subcomponent containing an oxide of a rare earth element (R), a forth subcomponent containing oxides of one or more elements selected from Mn, Cr, Co and Fe, and a fifth subcomponent containing oxides of one or more elements selected from Si, Al, Ge, B and Li, wherein the dielectric porcelain composition has dielectric particles and crystal grain boundaries, at least a part of the dielectric particles in the dielectric particles has a surface diffusion structure constituted of a center layer and a diffusion layer which exists around the center layer, and it satisfies Cmax/Cb>1 when the concentration of Mg near the interface of the dielectric particles is Cb and the max value of the concentration of Mg at the diffusion layer is Cmax. COPYRIGHT : (C)2008, JPO&INPIT |
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