Startseite The sintering behavior and physical properties of Li2CO3-doped Bi0.5(Na0.8K0.2)0.5TiO3 lead-free ceramics
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The sintering behavior and physical properties of Li2CO3-doped Bi0.5(Na0.8K0.2)0.5TiO3 lead-free ceramics

  • Le Dai Vuong und Nguyen Truong Tho
Veröffentlicht/Copyright: 22. Februar 2017
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International Journal of Materials Research
Aus der Zeitschrift International Journal of Materials Research Band 108 Heft 3

Abstract

In this study, Li2CO3-doped Bi0.5(Na0.8K0.2)0.5TiO3 (BNKT) ceramics were fabricated via the conventional solid-state reaction using ultrasound waves for preliminary milling. The milling time was shortened from 20 h to 1 h with ball milling. The phase structure of BNKT investigated by X-ray diffraction showed a single perovskite phase. With increasing Li2CO3 content, the phase structure of the ceramics changed from rhombohedral to tetragonal. At a sintering temperature of 1100 °C and Li2CO3 content of 0.4 wt.%, the best physical properties of the ceramics, such as density (ρ), 5.9 g cm−3; electromechanical coupling factors (kp), 0.32; (kt), 0.29; remanent polarization (Pr), 12.0 μC cm−2; dielectric constant (∊r), 1 191; and highest dielectric constant (∊max), 5 800, were obtained.

Keywords: Lead-free ceramics; BNKT; Electromechanical coupling factor; Sintering temperature; Dielectric constant
*Correspondence address, Le Dai Vuong, Faculty of Chemical and Environmental Engineering, Hue Industrial College, 70 Nguyen Hue Str., Hue City, Vietnam, Tel.: +84888000858, E-mail:

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Received: 2016-07-09
Accepted: 2016-10-12
Published Online: 2017-02-22
Published in Print: 2017-03-13

© 2017, Carl Hanser Verlag, München

Artikel in diesem Heft

  1. Contents
  2. Contents
  3. Original Contributions
  4. Effect of grain defects on the mechanical behavior of nickel-based single crystal superalloy
  5. Evolution of mechanical properties and microstructure of differently cryogenically treated hot die steel AISI–H13
  6. Microstructure and mechanical properties of nickel particle reinforced magnesium composite: impact of reinforcement introduction method
  7. Microstructure and mechanical properties of carbon nanotube-reinforced ZK61 magnesium alloy composites prepared by spark plasma sintering
  8. Solidification microstructures of Cu–Zr–Al–Y BMG produced by casting in a wedge-shaped copper mold
  9. Energy spectrum analysis of anodic oxidation film surface–interface on 7475 aluminum alloy after salt spray corrosion
  10. Fabrication of Ni/SiC composite powder by mechanical alloying and its effects on properties of copper matrix composites
  11. The sintering behavior and physical properties of Li2CO3-doped Bi0.5(Na0.8K0.2)0.5TiO3 lead-free ceramics
  12. The effect of heating rate on the microstructural breakdown required for thixoformability
  13. Nano-particles in powder injection molding of an aluminum matrix composite: Rheological behavior, production and properties
  14. Short Communications
  15. Preparation of vaterite CaCO3 microspheres by fast precipitation method
  16. Slag corrosion resistance of Al4SiC4
  17. DGM News
  18. DGM News
https://doi.org/10.3139/146.111465
Schlagwörter für diesen Artikel
Lead-free ceramics; BNKT; Electromechanical coupling factor; Sintering temperature; Dielectric constant

Artikel in diesem Heft

  1. Contents
  2. Contents
  3. Original Contributions
  4. Effect of grain defects on the mechanical behavior of nickel-based single crystal superalloy
  5. Evolution of mechanical properties and microstructure of differently cryogenically treated hot die steel AISI–H13
  6. Microstructure and mechanical properties of nickel particle reinforced magnesium composite: impact of reinforcement introduction method
  7. Microstructure and mechanical properties of carbon nanotube-reinforced ZK61 magnesium alloy composites prepared by spark plasma sintering
  8. Solidification microstructures of Cu–Zr–Al–Y BMG produced by casting in a wedge-shaped copper mold
  9. Energy spectrum analysis of anodic oxidation film surface–interface on 7475 aluminum alloy after salt spray corrosion
  10. Fabrication of Ni/SiC composite powder by mechanical alloying and its effects on properties of copper matrix composites
  11. The sintering behavior and physical properties of Li2CO3-doped Bi0.5(Na0.8K0.2)0.5TiO3 lead-free ceramics
  12. The effect of heating rate on the microstructural breakdown required for thixoformability
  13. Nano-particles in powder injection molding of an aluminum matrix composite: Rheological behavior, production and properties
  14. Short Communications
  15. Preparation of vaterite CaCO3 microspheres by fast precipitation method
  16. Slag corrosion resistance of Al4SiC4
  17. DGM News
  18. DGM News
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