Ni粉体の粗大粒子がMLCs Ni電極ペーストの焼結特性に及ぼす影響

抄録

The authors evaluated the characteristics of large particle size Ni powder used in the fabrication of internal electrodes of multilayer ceramic chip capacitors (MLCs). The effects of large particle size on the sintering characteristics of Ni powder for use as electrode films have been studied. A high green density was obtained for the increase of pulverized Ni powder of 1.0μm. The experimental results revealed that 1.0μm Ni powders were homogeneously dispersed in the paste. From shrinkage measurements of Ni electrode films with thickness of approximately 200μm, which were formed by an applicator and sintered at temperatures from 400 to 800°C, it was observed that films composed of increased amount of 1.0μm Ni powder showed a smaller shrinkage than that of 0.6μm Ni powder only. A similar result has been observed for the microstructure of sintered electrode films.