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Microstructural Characterization of Fine-Grained Pb(Zr0.52Ti0.48)O3 Ceramics Fabricated by a Spark Plasma Sintering

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Abstract:

The dense Pb(Zr0.52Ti0.48)O3 (PZT) piezoelectric ceramics have been prepared at a low temperature by a spark plasma sintering (SPS) method without excess PbO addition and their structural features including domains were systematically investigated. The fine microstructure consisting of submicrometer-sized grains as well as relative density reaching 99% was achieved by sintering at 950°C which is 400°C lower than that of pressureless sintering (PLS). Transmission electron microscopy (TEM) results confirmed that the sintered specimen contained very dense domain structures inside each grain, showing the nanoscaled single-domains even at the small grains (below 100 nm). The SPS-processed PZT exhibited better piezoelectric properties than those of the PLS-processed one, which is attributed to its fine-microstructural feature.

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Periodical:

Key Engineering Materials (Volumes 317-318)

Pages:

155-158

DOI:

https://doi.org/10.4028/www.scientific.net/KEM.317-318.155

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Online since:

August 2006

Authors:

Sang Mo Koo, Seung Hwan Shim, Jong Won Yoon, Kwang Bo Shim

Keywords:

Domain Structure, Pb(Zr0.52Ti0.48)O3, Piezoelectric Properties, Spark Plasma Sintering (SPS)

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© 2006 Trans Tech Publications Ltd. All Rights Reserved

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