Alkali volatilization of (Li,Na,K)NbO3-based piezoceramics and large-field electrical and mechanical properties
- 1 March 2021
- journal article
- research article
- Published by Ceramic Society of Japan in Journal of the Ceramic Society of Japan
- Vol. 129 (3), 127-134
- https://doi.org/10.2109/jcersj2.20201
Abstract
While lead-free (Li,Na,K)NbO3 piezoceramics have a high Curie temperature (TC > 400 °C) and an excellent piezoelectric constant (d33 > 200 pC/N), the process window regarding the sintering temperature and dwelling time is narrow. Inappropriate sintering conditions can induce the volatilization of A-site alkali ions, leading to a deterioration in dielectric and piezoelectric properties. However, the effect of alkali volatilization on the ferroelastic properties is still uncertain. In this study, (Li,Na,K)NbO3 piezoceramics were deliberately exposed to the sintering temperature for varying times to compare the susceptibility of the effect of alkali volatilization on the ferroelastic properties and compared to changes in the ferroelectric and ferroelastic and dielectric properties.Keywords
This publication has 36 references indexed in Scilit:
- Grain-Size-Controlled (Li,Na,K)NbO3 Ceramics Using Powder Source Classified by Centrifugal SeparatorJapanese Journal of Applied Physics, 2012
- A Route Forwards to Narrow the Performance Gap between PZT and Lead‐Free Piezoelectric Ceramic with Low Oxygen Partial Pressure Processed (Na0.5K0.5)NbO3Journal of the American Ceramic Society, 2012
- Comparison of the Temperature‐Dependent Ferroelastic Behavior of Hard and Soft Lead Zirconate Titanate CeramicsJournal of the American Ceramic Society, 2010
- Temperature-dependent ferroelastic switching of soft lead zirconate titanateActa Materialia, 2009
- Grain size effect on the poling of soft Pb(Zr,Ti)O3 ferroelectric ceramicsJournal of the European Ceramic Society, 2008
- Synthesis of a Li‐ and Ta‐Modified (K,Na)NbO3 Solid Solution by Mechanochemical ActivationJournal of the American Ceramic Society, 2008
- High‐Temperature Instability of Li‐ and Ta‐Modified (K,Na)NbO3 PiezoceramicsJournal of the American Ceramic Society, 2008
- Fatigue of Lead Zirconate Titanate Ceramics. I: Unipolar and DC LoadingJournal of the American Ceramic Society, 2007
- Influence of radial stress on the poling behaviour of lead zirconate titanate ceramicsActa Materialia, 2007
- Electron Microscopy Studies of Potassium Sodium Niobate CeramicsMicroscopy and Microanalysis, 2005