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Multiple accelerated degradation test and failure analysis for Ni-BaTiO3 MLCCs

  • Journal of the Korean Crystal Growth and Crystal Technology
  • Abbr : J. Korean Cryst. Growth Cryst. Technol.
  • 2009, 19(2), pp.102-105
  • Publisher : The Korea Association Of Crystal Growth, Inc.
  • Research Area : Engineering > Materials Science and Engineering

김정우 1 김진성 1 Lee, Hee-Soo 1 강도원 2 김정욱 2

1부산대학교
2삼성전기

Accredited

ABSTRACT

The accelerated life time test of the MLCCs with different BaTiO3 particle sizes were conducted at 150℃, 75 V condition and the effect of BaTiO3 particle size on the breakdown voltage and degradation characteristics of MLCCs was investigated. The MLCCs were prepared by using the BaTiO3 particles having the size of 0.525 μm, 0.555 μm, 0.580 μm and Ni-electrode, respectively. The MLCCs which have the particle size of 0.525 μm, 0.555 μm, and 0.580 μm, respectively were confirmed to meet the standard requirements of X5R (change capacitance within ± 15 % at −55~85℃) by TCC (Temperature Coefficient of Capacitance). The effect of the BaTiO3 particle size on the insulation resistance behavior of MLCCs was confirmed by BDV (Breakdown Voltage) measurements and the cause and degree of degradation of MLCCs were characterized by XPS analysis after the accelerated life test. The MLCCs with 0.525 μm-BaTiO3 showed better insulation resistance and BDV characteristics compare to other MLCCS and XPS analysis revealed that the MLCCs degradation is caused by the NiO peak and BaTiO3 peak decrease

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