| abstract |
The present invention relates to a method of dispersing and coating an additive in a ceramic powder so that the additive is highly dispersed. Ethenylbenzene is added to a sol of a metal salt or at least one aqueous metal salt solution selected from the group consisting of nitrates, acetates, oxides and carbonates of Mg, Y, Dy, Mn, Ba and Ca, followed by (Ba (1-x ) Cax) TiO3, 0≤x≤0.05) adding and premixing the ceramic powder; Pulverizing and mixing the premix in a beads mill; Spray drying; And it provides a method for uniformly dispersing, coating the additive in the ceramic powder comprising a heat treatment at 400 ~ 700 ℃. By dispersing the additive highly in the dielectric powder by the liquid phase method, the additive does not segregate and the sintering control and dispersibility of the fine powder are improved. The additive-dispersed dielectric powder is suitable for the manufacture of high capacity multilayer ceramic capacitors of more than 1005 size 1 ㎌ and exhibits improved reliability. |