Ceramic dielectrics for base-metal-electrode multilayered ceramic capacitors and the preparation thereof

摘要

The present invention discloses a new dielectric material can be used as the dielectric for base-metal electrode multilayer ceramic capacitors. In the present invention, a small amount of fine metallic particles are added into barium titanate based powder. The metallic particles can absorb oxygen to prevent the oxidation of the internal electrode. The metal is then oxidized to result in an oxide that can dissolve into the dielectric. The dielectric material of the present invention can be co-fired with nickel or copper internal electrode in a sintering atmosphere of commercial nitrogen or even of air. After sintering, no post-sintering heat treatment is needed.