| abstract |
【Task】 The present invention relates to a method for dispersing and coating an additive in a ceramic powder so that the additive is highly dispersed. [Solution] After adding ethenylbenzene to a sol of at least one metal salt aqueous solution or metal salt selected from the group consisting of nitrates, acetates, oxides and carbonates of Mg, Y, Dy, Mn, Ba and Ca, ( Ba (1-x) Ca x ) TiO 3 , (0 ≦ x ≦ 0.05) adding ceramic powder, premixing; crushing and mixing the premix in a bead mill; spray drying; Provided is a method for uniformly dispersing and coating an additive on a ceramic powder including a step of heat treatment at 400 to 700 ° C. By highly dispersing the additive in the dielectric powder by the liquid phase method, the additive is not segregated, and sintering control and dispersibility of the fine powder are improved. The dielectric powder in which the additive is highly dispersed is suitable for manufacturing a high-capacity multilayer ceramic capacitor of 1005 size, 1 μF or more and exhibits improved reliability. [Selection] Figure 1 |