초록

High reliability components that can operate reliably in harsh and special environments such as aerospace and military fieldsare required. In this study, the BaTiO3-Nb2O5-Co3O4 composition, which is the basic composition of precious metal electrodemultilayer ceramic capacitors with high reliability, was added with the binary BaO-V2O5 composition to confirm the electricalproperties and microstructure changes. First, a BaTiO3-Nb2O5-Co3O4 composition having a core-shell structure was prepared,and then a Ba3V4O13 composition was synthesized with a binary BaO-V2O5 composition. Then, 1, 3, and 5 wt% of Ba3V4O13composition were added to observe changes in electrical properties and microstructure according to firing temperatures. Asa result, the maximum dielectric constant 2502, dielectric loss of 0.74%, insulation resistance of 1.04E12 Ω, and X8Rtemperature characteristics could be satisfied in the firing temperature range of 1150-1210 ℃.

키워드

Aerospace, Precious metal electrode, Multilayer ceramic capacitors.

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