Journal of Powder Materials (한국분말재료학회지)

The Korean Powder Metallurgy & Materials Institute (한국분말재료학회 (*구 분말야금학회))
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Enhancement in Piezoelectric Properties of PZT-Based Ceramics by High Energy Ball-Milling Treatment of Solid-State Synthesized Powders

  • Kim, Dae-Uk (School of Materials Science and Engineering, University of Ulsan) ;
  • Lee, Han-Bok (School of Materials Science and Engineering, University of Ulsan) ;
  • Hung, Nguyen Viet (School of Materials Science and Engineering, University of Ulsan) ;
  • Pham, Ky Nam (School of Materials Science and Engineering, University of Ulsan) ;
  • Han, Hyoung-Su (School of Materials Science and Engineering, University of Ulsan) ;
  • Lee, Jae-Shin (School of Materials Science and Engineering, University of Ulsan)
  • Received : 2010.09.03
  • Accepted : 2010.10.05
  • Published : 2010.10.28
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Abstract

The effects of high energy ball-milling (HEBM) on the sintering behavior and piezoelectric properties of 0.1 wt% $Li_2CO_3$ doped 0.8Pb($Mg_{1/3}Nb_{2/3}$)$O_3$-0.2Pb($Zr_{0.475}Ti_{0.525}$)$O_3$ (PMN-PZT) ceramics were investigated. It was found that HEBM treatment was quite effective to reduce the average particle size down to 300 nm, leading to increased density as well as enhanced piezoelectric properties of a sintered specimen even though prolonged HEBM resulted in unwanted secondary phases that caused a degradation of piezoelectric properties. The dielectric constant ($\varepsilon_r$), piezoelectric coupling factor ($k_p$) and piezoelectric constant $d_{33}$ of 0.1 wt% $Li_2CO_3$ doped PMN-PZT ceramics prepared via HEBM for 10 h reached 2040, 0.68 and 554 pC/N, respectively.

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References

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