Sintering behavior and physical properties of Bi0.5(Na1–xKx)0.5SnO3 lead-free ceramics
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Keywords

Lead-free ceramics
BNKS
electromechanical coupling factor
sintering
dielectric constant

How to Cite

1.
Tho NT, Minh LN, Tu LTU, Trang DTH, Dinh LP, Huan NLH, Thao LTP, Hue NT, Hau NM. Sintering behavior and physical properties of Bi0.5(Na1–xKx)0.5SnO3 lead-free ceramics. hueuni-jns [Internet]. 2021Jun.29 [cited 2021Sep.24];130(1B):13-20. Available from: http://jos.hueuni.edu.vn/index.php/hujos-ns/article/view/6191

Abstract

In this study, Bi0.5(Na1–xKx)0.5SnO3 (BNKS) ceramics (x = 0, 0.1, 0.2, 0.3, and 0.4) were fabricated via ultrasound wave before milling. The time of ball milling decreased from 20 to 1 h. The X-ray diffraction patterns show that the BNKS has a single-phase structure. When the potassium content increases, the phase structure of the ceramics changes from rhombohedral to tetragonal. When sintered at 1100 °C and x = 0.2, the ceramics’ physical properties are the best with the mass density of 5.59 g/cm3, the electromechanical coupling constants kp of 0,31 and kt of 0.27, the remanent polarization of      11.9 µC/cm; the dielectric constant εr of 1131, and the highest dielectric constant emax of 4800.

https://doi.org/10.26459/hueunijns.v130i1B.6191
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