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Open AccessArticle

Performance Improvement of Ring-Type PZT Ceramics for Ultrasonic Dispersion System

1
Department of Thermal Systems, Korea Institute of Machinery and Materials, Daejeon 34103, Korea
2
Department of Plant System & Machinery, University of Science & Technology, Daejeon 34113, Korea
3
Center for Nano-Bio Measurement, Korea Research Institute of Standards and Science, Daejeon 34113, Korea
*
Author to whom correspondence should be addressed.
Micromachines 2020, 11(2), 144; https://doi.org/10.3390/mi11020144
Received: 15 December 2019 / Revised: 21 January 2020 / Accepted: 22 January 2020 / Published: 28 January 2020
(This article belongs to the Special Issue Selected Papers from the ICAE 2019)
This study has been based on the examination of the characterization of ring-type lead zirconate titanate (PZT) ceramics for high-intensity focused ultrasonic dispersion system. The ring-type PZT ceramics were fabricated by the powder molding method. The mechanical properties, dielectric constant, and microstructure of the ceramics were investigated. Consequently, the density of the ceramics was increased with increasing forming pressure while the density of ceramics that were sintered at 1350 °C was decreased due to over-sintering. Furthermore, the mechanical properties were excellent at the higher forming pressure. The dielectric property of the ring-type PZT ceramics was not clearly influenced by the manufacturing and sintering conditions. The abnormal grain growth of the ceramics, however, could be prevented by a lower heating rate in addition to reducing the porosity.
Keywords: lead zirconate titanate; ring-type ceramics; high-intensity focused ultrasound; ultrasonic dispersion system; cavitation effect lead zirconate titanate; ring-type ceramics; high-intensity focused ultrasound; ultrasonic dispersion system; cavitation effect
MDPI and ACS Style

Choi, Y.M.; Lee, Y.L.; Lim, E.S.; Trimzi, M.A.; Hwangbo, S.A.; Ham, Y.B. Performance Improvement of Ring-Type PZT Ceramics for Ultrasonic Dispersion System. Micromachines 2020, 11, 144.

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