1997 年 5 巻 1 号 p. 91-104
The studies on calcination have illustrated clear influence on the life time of multilayer ceramic chip capacitors with Ni electrodes by means of highly accelerated life test. Regarding the life time of the capacitors, the experimen tal results showed remarkable evidence of (1) effects of suitable amount of Fe and Mn additives, (2) homogeneous calcination with maintaining A/B≈a1.01 nonstoichiometry of ABO3 perovskite structure, and (3) high temperature calcination after completion of binder burn out. By computer aided microstructural analysis, the distribution of constituent and impurity ele ments of the capacitors were found to be dependent on calcination tempera ture. The change of the lattice constant of ABO3 at high temperatures and thermal behavior of ABO3 are also discussed.
