Diffusion of silver during sintering in high permittivity COG dielectrics

R. Mikkenie*, W.A. Groen, R. van der Drift

*Corresponding author for this work

Research output: Contribution to journalConference articleAcademicpeer-review

Abstract

To achieve cost reduction in multi-layer ceramic capacitors and actuators, which use a silver-palladium alloy as internal electrode, the trend is to use alloys with the highest silver content possible. This requires ceramic materials which must be sintered at a relative low temperature. Goal is to avoid much diffusion of silver into the ceramics. Analysis of the composition of the electrode in multilayer components is a good tool to investigate the diffusion of silver during sintering. Analysis of various multi-layer components with different silver-palladium alloys shows that the diffusion of silver during sintering is dependent on the difference between the sintering temperature of the multilayer component and the melting point of the silver-palladium alloy used. Diffusion of silver into the ceramics during sintering is negligible when this difference is at least 100° C.

Original languageEnglish
Pages (from-to)72-80
Number of pages9
JournalIntegrated ferroelectrics
Volume114
Issue number1
DOIs
Publication statusPublished - 1 Dec 2010
Event4th International Conference on Electroceramics, ICE-2009 - New Delhi, India
Duration: 13 Dec 200917 Dec 2009
Conference number: 4

Keywords

  • BaTiO
  • Diffusion
  • Silver electrode
  • Sintering

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