한국분말재료학회지 (Journal of Powder Materials)

  • 제13권2호
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  • Pages.129-137
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  • 2006
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  • 2799-8525(pISSN)
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  • 2799-8681(eISSN)
한국분말재료학회 (*구 분말야금학회) (The Korean Powder Metallurgy & Materials Institute)
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자전연소합성법에 의해 제조된 BaTiO3 분말의 소결특성에 미치는 첨가제의 영향

The Effect of Adittives on the Sintering Properties of Barium Titanate Powder Prepared by Self-propagating High-temperature Synthesis

  • 임성재 (충남대학교 급속응고신소재연구소) ;
  • 신창윤 (충남대학교 급속응고신소재연구소) ;
  • 원형일 (충남대학교 급속응고신소재연구소) ;
  • 원창환 (충남대학교 급속응고신소재연구소)
  • Lim Sung-Jae (Engineering Research Center for Rapidly Solidified Materials Chungnam National University) ;
  • Shin Chang-Yun (Engineering Research Center for Rapidly Solidified Materials Chungnam National University) ;
  • Won Hyung-Il (Engineering Research Center for Rapidly Solidified Materials Chungnam National University) ;
  • Won Chang-Whan (Engineering Research Center for Rapidly Solidified Materials Chungnam National University)
  • 발행 : 2006.04.01
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초록

In this study, high purity fine $BaTiO_3$ powders were prepared by SHS (Self-propagating High-temperature Synthesis). We would examinate the study of sintering properties and characteristics as a function of temperature with various additives (binder, sintering agent). In separately binder addition, the green and sintered density of specimen were increased as binder content increases. The increased porosity resulted in fine grain size due to the inhibition of grain boundary moving. The $Al_{2}O_{3},\;TiO_{2}$ and MgO playa role of increasing dielectric constants at room temperature. These values were decreased at curie temperature. In case of $SiO_2$, the Curie temperature was decreased. In this study, a high dielectric ceramic capacitor material with temperature stability was synthesized by using various additives.

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