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Infiltration behaviour of an internal electrode and electrical properties of multilayer capacitors by electrode infiltration

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Abstract

The infiltration behaviour of a tin melt, as an internal electrode, to the porous layers, and the electrical properties of multilayer ceramic capacitors was investigated by electrode infiltration. By preventing green-state delamination between the dielectric green sheet and the carbon paste, uniform porous layers, 5 μm thick, could be formed after sintering. When 15 vol % ceramic pillars were added to the carbon paste, the porous layer of the sintered samples could be considered as a porous solid formed by many pores larger than 4 μm. The critical pressure for the infiltration of tin melt into such a porous layer was found to be 0.5 MPa. With a high infiltration pressure, the resistivity of multilayer capacitors was decreased to 108–109Ωcm due to the growth of micro-defects formed on the surface of the dielectric layers during the lamination process.

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Authors and Affiliations

  1. Fine Ceramics Laboratory, Korea Institute of Science and Technology, PO Box 131, Cheongryang, Seoul, Korea

    Tae-Sung Oh, Chang-Bong Lee & Yoon-Ho Kim

Authors
  1. Tae-Sung Oh
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  2. Chang-Bong Lee
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  3. Yoon-Ho Kim
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Oh, TS., Lee, CB. & Kim, YH. Infiltration behaviour of an internal electrode and electrical properties of multilayer capacitors by electrode infiltration. J Mater Sci 27, 5569–5574 (1992). https://doi.org/10.1007/BF00541624

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