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Microstructural Characterization of Fine-Grained Pb(Zr<sub>0.52</sub>Ti<sub>0.48)</sub>O<sub>3</sub> Ceramics Fabricated by a Spark Plasma Sintering
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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.
Trans Tech Publications, Ltd.
Title: Microstructural Characterization of Fine-Grained Pb(Zr<sub>0.52</sub>Ti<sub>0.48)</sub>O<sub>3</sub> Ceramics Fabricated by a Spark Plasma Sintering
Description:
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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