Cymbal actuator fabricated using (Na0.46K0.46Li 0.08)NbO3 lead-free piezoceramic

X. X. Wang, Siu Wing Or, Kwok Ho Lam, H. L W Chan, P. K. Choy, P. C K Liu

Research output: Journal article publicationJournal articleAcademic researchpeer-review

9 Citations (Scopus)

Abstract

(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.
Original languageEnglish
Pages (from-to)385-388
Number of pages4
JournalJournal of Electroceramics
Volume16
Issue number4
DOIs
Publication statusPublished - 1 Jul 2006

Keywords

  • Cymbal actuator
  • Lead-free piezoceramic
  • NKLN8
  • PZT

ASJC Scopus subject areas

  • Ceramics and Composites

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