Molten Salt Synthesis of (K0.47Na0.47Li0.06) NbO3 Lead-Free Piezoelectric Ceramics
(K0.47Na0.47Li0.06)NbO3 (KNLN) lead-free ceramics were prepared by molten salt synthesis (MSS) method using k2CO3-Na2CO3 eutectic mixtures as the flux. The microstructure and piezoelectric properties when sin- tered at 980- 1 030 ℃ were investigated. The calcined powders were examined by X-ray diffr...
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Published in | Transactions of Tianjin University Vol. 16; no. 2; pp. 152 - 155 |
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Main Author | |
Format | Journal Article |
Language | English |
Published |
2010
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Subjects | |
Online Access | Get full text |
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Summary: | (K0.47Na0.47Li0.06)NbO3 (KNLN) lead-free ceramics were prepared by molten salt synthesis (MSS) method using k2CO3-Na2CO3 eutectic mixtures as the flux. The microstructure and piezoelectric properties when sin- tered at 980- 1 030 ℃ were investigated. The calcined powders were examined by X-ray diffraction. The microstruc- ture of the calcined powders and sintered bodies was observed using a scanning electron microscope (SEM). The pie- zoelectric constant d33 was measured using a quasi-static piezoelectric d33 meter. The planar coupling coefficient Kp was calculated by resonance-antiresonance method. The experimental data for each sample's performance indicators were the average values of 8 specimens. The relative densities of sintered specimens are above 97%, and the dielectric loss is below 0.03. It was found that (K0.47Na0.47Li0.06) NbO3 prepared by MSS is compact and lead-free. The piezoelectric constant d33 is 216 pC.N 1 and the planar electromechanical coupling factor Kp is 0.352. |
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Bibliography: | TM282 MSS method X-ray diffraction (XRD) microstructure piezoelectricity microstructure; piezoelectricity; X-ray diffraction (XRD) ; MSS method 12-1248/T TQ174.756 |
ISSN: | 1006-4982 1995-8196 |