Journal of Powder Materials (한국분말재료학회지)

The Korean Powder Metallurgy & Materials Institute (한국분말재료학회 (*구 분말야금학회))
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Synthesis of Nanocrystalline BaTiO3 Powder by the Combination of High Energy Ball Milling of BaCO3-TiO2 Mixture and Solid-State Reaction

고에너지 볼밀링된 BaCO3와 TiO2 혼합분말의 고상반응에 의한 나노결정 BaTiO3 분말 합성

  • Ryu, Sung-Soo (Engineering Ceramics Center, Korea Institute of Ceramic Engineering and Technology)
  • 류성수 (한국세라믹기술원 엔지니어링세라믹센터)
  • Received : 2012.06.15
  • Accepted : 2012.08.17
  • Published : 2012.08.28
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Abstract

Nanocrystalline $BaTiO_3$ powder could be synthesized by solid-state reaction using the mixture which was prepared by a high energy milling process in a bead mill for $BaCO_3$ and nanocrystalline $TiO_2$ powders mixture. Effect of the milling time on the powder characteristic of the synthesized $BaTiO_3$ powder was investigated. Nanocrystalline $BaTiO_3$ with a particle size of 50 nm was obtained at $800^{\circ}C$. High tetragonal $BaTiO_3$ powder with a tetragonality(=c/a) of 1.009 and a specific surface area of $7.6m^2/g$ was acquired after heat-treatment at $950^{\circ}C$ for 2 h. High energy ball milling was effective in decreasing the reaction temperature and increasing the tetragonality.

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References

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