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Experimental Study on the Deformation of MLCC Compressed Bar by Quantitative Analysis for Outgas

Outgas 분석을 통한 MLCC Bar 변형률 측정

  • Kim, Min-Ju (Busan R&D Center, Samsung Eelctro-Mechanics Co. LTD.) ;
  • Kim, Jong-Yun (Busan R&D Center, Samsung Eelctro-Mechanics Co. LTD.) ;
  • Jeong, Gi-Ho (Busan R&D Center, Samsung Eelctro-Mechanics Co. LTD.) ;
  • Park, Chang-Sik (Busan R&D Center, Samsung Eelctro-Mechanics Co. LTD.)
  • 김민주 (삼성전기(주) 부산연구분소) ;
  • 김종윤 (삼성전기(주) 부산연구분소) ;
  • 정기호 (삼성전기(주) 부산연구분소) ;
  • 박창식 (삼성전기(주) 부산연구분소)
  • Received : 2010.03.03
  • Accepted : 2010.05.23
  • Published : 2010.06.01

Abstract

MLCC (multi-layer ceramic capacitor) is usually fabricated by lamination of predetermined number of single layers. Often, the state of MLCC before sintering is called the green state, whose strength comes from the adhesion between the dielectric material and the polymer binder. Therefore the lamination of a single layer before sintering can be easily deformed by environment due to the relatively lower strength. After the compression process, which helps single sheets cohereto with adjacent sheets, the MLCC green bar is preheated to resolve the probable internal stress. Unfortunately, unexpected deformation after preheating resulted in problems during cutting of the MLCC green bar. In this study, one of 2 primary hypotheses which were proposed to resolve the unexpected deformation after preheating was examined by quantitative experiment with GC/MS (gas chromatograpy/mass spectrometer). The proportion of deformation caused by DOP evaporation, which was primarily evaporated componet during preheating, to the total deformation of the MLCC green bar was found to be 53%.

Acknowledgement

Supported by : 경원대학교

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