Journal of the Korean Institute of Electrical and Electronic Material Engineers (한국전기전자재료학회논문지)

The Korean Institute of Electrical and Electronic Material Engineers (한국전기전자재료학회)
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Microstructures and Electrical Properties of (Na,K)NbO3 Piezoceramics with Various Solvents at Milling Process

혼합공정의 용매가 (Na,K)NbO3 압전체의 미세구조 및 전기적 특성에 미치는 영향

  • Lim, Ju-Hee (Department of Materials Science and Engineering, Korea National University of Transportation) ;
  • Lee, Gwang-Su (Department of Materials Science and Engineering, Korea National University of Transportation) ;
  • Ryu, Sung-Lim (Department of Materials Science and Engineering, Korea National University of Transportation) ;
  • Kweon, Soon-Yong (Department of Materials Science and Engineering, Korea National University of Transportation)
  • 임주희 (한국교통대학교 신소재공학과) ;
  • 이광수 (한국교통대학교 신소재공학과) ;
  • 류성림 (한국교통대학교 신소재공학과) ;
  • 권순용 (한국교통대학교 신소재공학과)
  • Received : 2014.12.16
  • Accepted : 2014.12.22
  • Published : 2015.01.01
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Abstract

$(Na,K)NbO_3$-based piezoelectric ceramics were synthesized by a solid phase sintering method with various milling solvents. The solvents were varied with acetone, ethanol, and pure water to investigate the effect on the microstructure and electrical properties. NKN ceramics showed the maximum values of the relative density (94%), the mechanical quality factor (Qm: 78) and the electro-mechanical coupling factor ($k_p$: 0.25) at the ethanol solvent. It might mean that a solid phase sintering of the NKN piezoelectrics with a suitable solvent could improve the relative density and the piezoelectric properties.

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References

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