Cymbal actuator fabricated using (Na0.46K0.46Li0.08)NbO3 lead-free piezoceramic
- 76 Downloads
(Na0.46K0.46Li0.08)NbO3 (NKLN8) lead-free piezoceramic was prepared by a mixed oxide route. The ceramic showed a single phase of orthorhombic perovskite structure at room temperature and a high Curie temperature of ∼430∘C. A cymbal actuator using NKLN8 as the actuation element and titanium alloy as the endcaps was fabricated and characterized. A similar actuator with traditional Pb(Zr,Ti)O3 (PZT) piezoceramic was also constructed for comparison. The results showed that the NKLN8 actuator has a higher fundamental resonance frequency of 107.1 kHz and a faster response of 9.3 μs with a comparable effective coupling coefficient of 0.15 at the expense of a lower strain coefficient of 1.9 nm/V. The observed actuator performance was discussed in relation to the ceramic properties.
KeywordsCymbal actuator Lead-free piezoceramic NKLN8 PZT
Unable to display preview. Download preview PDF.
- 2.K. Uchino, Piezoelectric Actuators and Ultrasonic Motors (Kluwer Academic Publishers, Boston, 1997).Google Scholar
- 4.T. Takenaka, Ultrason. Technol., 8, 2 (2001) (in Japanese).Google Scholar
- 7.ANSI/IEEE Std. 176–1987: IEEE Standard on Piezoelectricity (IEEE, 1987)Google Scholar
- 10.D.E. Gray, (Ed.), American Institute of Physics Handbook (McGraw-Hill, N.Y., 1957).Google Scholar