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High-energy ball milling of lead-free piezoceramic: influence of milling medium on properties

High-energy ball milling of lead-free piezoceramic: influence of milling medium on properties The study highlights the effect of high-energy ball milling (HEBM) in dry and wet mode, in comparison to conventional ball milling (CBM), on NKN-based lead-free piezoceramics. The particle size reduced significantly from 1.97 μm (CBM) to 115 nm after wet HEBM which enhanced the piezoelectric property significantly. HEBM influenced the microstructure of the samples which improved the density, and the samples exhibited excellent ferroelectric character, stable ageing and electrical fatigue behaviour. As compared to CBM, dielectric constant increased nearly 50%, while piezoelectric charge coefficient (d 33) increased more than double by wet HEBM. The wet HEBM samples also showed better ferroelectric properties and higher Curie temperature (~ 320 °C) along with improved resistance to thermal annealing due to stable ferroelectric polarisation state. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Journal of the Australian Ceramic Society Springer Journals

High-energy ball milling of lead-free piezoceramic: influence of milling medium on properties

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Publisher
Springer Journals
Copyright
Copyright © 2018 by Australian Ceramic Society
Subject
Materials Science; Ceramics, Glass, Composites, Natural Materials; Materials Engineering; Inorganic Chemistry
ISSN
2510-1560
eISSN
2510-1579
DOI
10.1007/s41779-018-0284-2
Publisher site
See Article on Publisher Site

Abstract

The study highlights the effect of high-energy ball milling (HEBM) in dry and wet mode, in comparison to conventional ball milling (CBM), on NKN-based lead-free piezoceramics. The particle size reduced significantly from 1.97 μm (CBM) to 115 nm after wet HEBM which enhanced the piezoelectric property significantly. HEBM influenced the microstructure of the samples which improved the density, and the samples exhibited excellent ferroelectric character, stable ageing and electrical fatigue behaviour. As compared to CBM, dielectric constant increased nearly 50%, while piezoelectric charge coefficient (d 33) increased more than double by wet HEBM. The wet HEBM samples also showed better ferroelectric properties and higher Curie temperature (~ 320 °C) along with improved resistance to thermal annealing due to stable ferroelectric polarisation state.

Journal

Journal of the Australian Ceramic SocietySpringer Journals

Published: Nov 8, 2018

References