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- Enhancement in Piezoelectric Properties of PZT-Based Ceramics by High Energy Ball-Milling Treatment of Solid-State Synthesized Powders
- Dae-Uk Kim, Han-Bok Lee, Nguyen Viet Hung, Ky Nam Pham, Hyoung-Su Han, Jae-Shin Lee
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Journal of Korean Powder Metallurgy Institute 2010;17(5):404-408
DOI: https://doi.org/10.4150/KPMI.2010.17.5.404
2School of Materials Science and Engineering, University of Ulsan
3School of Materials Science and Engineering, University of Ulsan
4School of Materials Science and Engineering, University of Ulsan
5School of Materials Science and Engineering, University of Ulsan
6School of Materials Science and Engineering, University of Ulsan
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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_1/3Nb_2/3)O_3-0.2Pb(Zr_0.475Ti_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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