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Low-temperature sintering of 0.96(K0.5Na0.5)NbO3-0.04LiNbO3 lead-free piezoelectric ceramics modified with CuO

  • Phan Dinh Gio , Huynh Quang Viet and Le Dai Vuong
Published/Copyright: October 30, 2018
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International Journal of Materials Research
From the journal International Journal of Materials Research Volume 109 Issue 11

Abstract

In this study, 0.96(K0.5Na0.5)NbO3-0.04LiNbO3 (KNLN) + xwt.%CuO piezoelectric ceramics, where x = 0.0, 0.1, 0.2, 0.25, and 0.30, have been successfully fabricated using the conventional solid-state reaction method. The effect of CuO on the sintering behavior, structure, microstructure, and electrical properties of KNLN ceramics was studied. The addition of CuO reduced the sintering temperature of the ceramics from 1 050 °C to 950 °C. The experimental results showed that with CuO doping, the KNLN ceramics can be well sintered at a low temperature and show a dense, pure perovskite structure. At a sintering temperature of 950 °C and CuO content of 0.25 wt.%, the best physical properties of the ceramics, such as density (ρ), 4.14 g cm−3; electromechanical coupling factors (kp), 0.33 and (kt), 0.43; dielectric constant (∊), 349; dielectric loss (tanδ), 0.008; mechanical quality factor (Qm), 133; and piezoelectric constant (d33), 130 pC N−1, were obtained.

Keywords: KNLN; Lead-free ceramics; Ferroelectric; Piezoelectric; Dielectric
*Correspondence address, Phan Dinh Gio, Department of Physics, College of Sciences, Hue University, 77 Nguyen Hue Str., Hue City, Vietnam, Tel.: +84905156253, E-mail:

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Received: 2018-03-09
Accepted: 2018-06-28
Published Online: 2018-10-30
Published in Print: 2018-11-12

© 2018, Carl Hanser Verlag, München

Articles in the same Issue

  1. Contents
  2. Contents
  3. Original Contributions
  4. An artificial intelligence paradigm in heuristic search of tensile behaviour of titanium alloys
  5. The effect of the cooling rate on the course of oxidation of gamma titanium aluminide alloy
  6. Physical and electrochemical characteristics of low pressure cold sprayed aluminium composite coating on magnesium substrate
  7. The effect of Al2O3 reinforcement particles on the corrosion behavior of Al(Zn) solid solution matrix
  8. Effect of Zr content on the existence form of Zr and as-cast structure of high purity commercial aluminium
  9. Ethylenediamine-assisted synthesis of barium bismuthate microrods and solar light photocatalytic performance
  10. Structural evolution and formation mechanism of LiNi0.6Co0.2Mn0.2O2 during high-temperature solid-state synthesis
  11. Review
  12. Wear behaviour of Mg alloys and their composites – a review
  13. Short Communications
  14. Low-temperature sintering of 0.96(K0.5Na0.5)NbO3-0.04LiNbO3 lead-free piezoelectric ceramics modified with CuO
  15. DGM News
  16. DGM News
https://doi.org/10.3139/146.111706
Keywords for this article
KNLN; Lead-free ceramics; Ferroelectric; Piezoelectric; Dielectric

Articles in the same Issue

  1. Contents
  2. Contents
  3. Original Contributions
  4. An artificial intelligence paradigm in heuristic search of tensile behaviour of titanium alloys
  5. The effect of the cooling rate on the course of oxidation of gamma titanium aluminide alloy
  6. Physical and electrochemical characteristics of low pressure cold sprayed aluminium composite coating on magnesium substrate
  7. The effect of Al2O3 reinforcement particles on the corrosion behavior of Al(Zn) solid solution matrix
  8. Effect of Zr content on the existence form of Zr and as-cast structure of high purity commercial aluminium
  9. Ethylenediamine-assisted synthesis of barium bismuthate microrods and solar light photocatalytic performance
  10. Structural evolution and formation mechanism of LiNi0.6Co0.2Mn0.2O2 during high-temperature solid-state synthesis
  11. Review
  12. Wear behaviour of Mg alloys and their composites – a review
  13. Short Communications
  14. Low-temperature sintering of 0.96(K0.5Na0.5)NbO3-0.04LiNbO3 lead-free piezoelectric ceramics modified with CuO
  15. DGM News
  16. DGM News
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