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Ceramics 2018, 1(2), 304-318;

Mechanochemically-Assisted Synthesis of Lead-Free Piezoelectric CaZrO3-Modified (K,Na,Li)(Nb,Ta)O3-Solid Solution

Electronic Ceramics Department, Jozef Stefan Institute, Jamova cesta 39, 1000 Ljubljana, Slovenia
Jozef Stefan International Postgraduate School, Jamova 39, 1000 Ljubljana, Slovenia
Author to whom correspondence should be addressed.
Received: 17 September 2018 / Revised: 5 October 2018 / Accepted: 12 October 2018 / Published: 17 October 2018
(This article belongs to the Special Issue Functional Ceramics for Energy Applications)
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Lead-free piezoelectric 0.95(Na0.49K0.49Li0.02)(Nb0.8Ta0.2)O3–0.05CaZrO3 with 2 wt % MnO2 addition was prepared using mechanochemically-assisted solid-state synthesis. Upon mechanochemical activation of the mixture of reagents partial amorphization occurs which contributes to a significantly lower temperature of completion of the solid-state reaction, ~600 °C as opposed to ~700 °C for the conventional solid-state synthesis as determined by thermal analysis. The ceramic specimens prepared by the mechanochemically-assisted route exhibit improved compositional homogeneity and slightly enhanced piezoelectric properties, achieved in a considerably shorter processing time compared to the conventional solid-state synthesis route, which was studied as a reference. View Full-Text
Keywords: lead-free piezoceramics; KNN; mechanochemical activation; solid-state synthesis lead-free piezoceramics; KNN; mechanochemical activation; solid-state synthesis

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Radan, K.; Kmet, B.; Drnovšek, S.; Prah, U.; Rojac, T.; Malič, B. Mechanochemically-Assisted Synthesis of Lead-Free Piezoelectric CaZrO3-Modified (K,Na,Li)(Nb,Ta)O3-Solid Solution. Ceramics 2018, 1, 304-318.

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