The invention discloses a preparation method of an X8R-property slice type multilayer
ceramic capacitor, comprising the following steps of: preparing
ceramic slurry, making a
dielectric membrane, alternately
overprinting inner electrodes and
dielectric layers,
cutting, discharging glue,
sintering, sealing ends and burning ends, wherein the used
ceramic slurry in a
barium titanate structure also comprises 0.1-5wt% of auxiliary components apart from BaTiO3 as a main component; the inner electrodes are made of
nickel inner
electrode materials; end electrodes are made of
copper end
electrode materials; and the
sintering temperature is 1220 DEG C-1300 DEG C, and the
sintering process comprises a temperature rise section, a high-temperature burning section, a temperature reducing section and a
tempering section. As the X8R-property slice type multilayer
ceramic capacitor is prepared by using materials of a
base metal system for replacing expensive materials of a
palladium silver
system, theperformance reaches the level of X8R products of the
palladium silver
system, the upper-limit use temperature of the product reaches +150 DEG C, the change rate of the inner capacity in the temperature range of -55 DEG C-+150 DEG C is not greater than + / -15%, and the
ceramic capacitor has high reliability and can effectively replace the X8R products of the
palladium silver system; the method greatly reduces the production cost and saves scarce
noble metal resources, and the producible capacity range of the product is wider than that of the materials of the palladium silver system.