Synthesis and Characterization of Lead Free (K0.465Na0.465Li0.07)NbO3-SrZrO3 Piezoceramics. | ||
| The Bulletin Tabbin Institute for Metallurgical Studies (TIMS) | ||
| Volume 106, Issue 1, September 2017, Pages 38-44 PDF (4.78 M) | ||
| Document Type: Original research papers | ||
| DOI: 10.21608/tims.2017.299445 | ||
| Authors | ||
| S. A. I. Mostafa1; E. M. M. Ewais2; A. A. Mohamed3 | ||
| 1Tabbin Institute for Metallurgical Studies (TIMS), P.O. 109 Helwan, 11421 Cairo, Egypt. | ||
| 2Refractory and Ceramic Materials Division (RCMD), Central Metallurgical R&D Institute, P.O. 87 Helwan, 11421 Cairo, Egypt. | ||
| 3Chemistry Department, Faculty of Science, Helwan University | ||
| Abstract | ||
| Lead-free piezoelectric ceramics composition: (1-x) (K0.465Na0.465Li0.07) NbO3-xSrZrO3 (x = 0, 0.005, 0.050, 0.095, 0.140 and 0.185) have been synthesized by the conventional solid-state method. The effect of SrZrO3 content on their phase structure and dielectric properties was studied. Phase composition, microstructure and dielectric constant also were investigated. It was found that SrZrO3 diffuses into the K0.465Na0.465Li0.07NbO3 lattice to form a solid solution during sintering. With increasing the SrZrO3 content, the grain size becomes smaller. The dielectric properties of investigated ceramics were measured at room temperature and 1 kHz and 0.95 (K0.465Na0.465Li0.07) NbO3-0.05SrZrO3 ceramic posses high dielectric constant. | ||
| Keywords | ||
| Lead-free ceramics; KNN; Dielectric properties | ||
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