Journal of Powder Materials (한국분말재료학회지)

The Korean Powder Metallurgy & Materials Institute (한국분말재료학회 (*구 분말야금학회))
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Research on Synthesis and Sintering Behavior of Nano-sized (Pb, La)TiO3 Powders Using Mechano Chemical Process

기계화학공정에 의한 (Pb, La)TiO3 나노 분말의 합성 및 소결 특성 연구

  • Lee, Young-In (Department of Fine Chemical Engineering, Hanyang University) ;
  • Goo, Yong-Sung (Department of Fine Chemical Engineering, Hanyang University) ;
  • Lee, Jong-Sik (Department of Fine Chemical Engineering, Hanyang University) ;
  • Choa, Yong-Ho (Department of Fine Chemical Engineering, Hanyang University)
  • 이영인 (한양대학교 정밀화학공학과) ;
  • 구용성 (한양대학교 정밀화학공학과) ;
  • 이종식 (한양대학교 정밀화학공학과) ;
  • 좌용호 (한양대학교 정밀화학공학과)
  • Published : 2010.04.28
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Abstract

In this study, we successfully synthesized a nano-sized lanthanum-modified lead-titanate (PLT) powder with a perovskite structure using a high-energy mechanochemical process (MCP). In addition, the sintering behavior of synthesized PLT nanopowder was investigated and the sintering temperature that can make the full dense PLT specimen decreased to below $1050^{\circ}C$ by using $Bi_2O_3$ powder as sintering agent. The pure PLT phase of perovskite structure was formed after MCP was conducted for 4 h and the average size of the particles was approximately 20 nm. After sintered at 1050 and $1150^{\circ}C$, the relative density of PLT was about 93.84 and 95.78%, respectively. The density of PLT increased with adding $Bi_2O_3$ and the specimen with the relative densitiy over 96% were fabricated below $1050^{\circ}C$ when 2 wt% of $Bi_2O_3$ was added.

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