湿式化学法で合成したNi粉末の粒径が電極ペースト特性と焼結特性に及ぼす影響

概要

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We evaluated the characteristics of Ni powder paste used for the fabrication of internal electrodes of multilayer ceramic chip capacitors(MLCs). Moreover the effect of the grain size of Ni powder on sintering characteristics was evaluated using the paste. High filling densities were obtained for Ni powder of two different grain sizes, 0.2 and 0.5 μm. The experimental result reversed that pulverized Ni powder exhibits a high level of dispersion when it is used in paste form. From the measurements of sintering shrinkage rate, it has been observed that the 0.2 μm Ni powder had a higher shrinkage rate than the 0.5 μm Ni powder, indicated that the sintering shrinkage rate is closely related to grain diameter. A similar result has been obtained by observation of the surface structure of sintered bodies.
社団法人日本セラミックス協会の論文
2000-08-01