TY - JOUR
T1 - Disk-type piezoelectric transformer of a Na 0.5K 0.5NbO 3-CuNb 2O 6 lead-free ceramic for driving T5 fluorescent lamp
AU - Yang, Ming Ru
AU - Chu, Sheng Yuan
AU - Chan, I. Hao
AU - Yang, Song Ling
N1 - Funding Information:
This work was supported by the National Science Council of Taiwan under grants NSC 97-ET-7-006-005-ET and NSC-98-2112-M-415-001-MY3 . The authors would like to thank the Center for Micro/Nano Technology Research, National Cheng Kung University, Taiwan, for providing a single-slide mask aligner.
Copyright:
Copyright 2012 Elsevier B.V., All rights reserved.
PY - 2012/5/5
Y1 - 2012/5/5
N2 - Lead-free (Na 0.5K 0.5)NbO 3 (NKN) ceramics doped with 1 mol% CuNb 2O 6 (CN) ceramics were prepared using the conventional mixed oxide method, with a sintering temperature of 1075 °C. Microstructural analyses of the NKN-01CN ceramics were carried out and compared, using X-ray diffraction (XRD). NKN-01CN ceramics sintered at 1075°C not only exhibited excellent 'hard' piezoelectric properties of k p = 40%, k t = 45%, k 33 = 57%, a ferroelectric property of E c = 23 kV/cm, and an extraordinarily high mechanical quality factor (Q m) of 1933 but also showed excellent stability with temperature (TCF = -154 ppm/°C). The piezoelectric transformer was simplified, using an equivalent circuit, and analyzed, using MATLAB; the simulation data agreed well with the experimental results. An efficiency of 95.7% was achieved for the NKN-01CN piezoelectric transformer with load resistance of 20 kΩ. An 8 W T5 fluorescent lamp was successfully driven by the NKN-01CN piezoelectric transformer.
AB - Lead-free (Na 0.5K 0.5)NbO 3 (NKN) ceramics doped with 1 mol% CuNb 2O 6 (CN) ceramics were prepared using the conventional mixed oxide method, with a sintering temperature of 1075 °C. Microstructural analyses of the NKN-01CN ceramics were carried out and compared, using X-ray diffraction (XRD). NKN-01CN ceramics sintered at 1075°C not only exhibited excellent 'hard' piezoelectric properties of k p = 40%, k t = 45%, k 33 = 57%, a ferroelectric property of E c = 23 kV/cm, and an extraordinarily high mechanical quality factor (Q m) of 1933 but also showed excellent stability with temperature (TCF = -154 ppm/°C). The piezoelectric transformer was simplified, using an equivalent circuit, and analyzed, using MATLAB; the simulation data agreed well with the experimental results. An efficiency of 95.7% was achieved for the NKN-01CN piezoelectric transformer with load resistance of 20 kΩ. An 8 W T5 fluorescent lamp was successfully driven by the NKN-01CN piezoelectric transformer.
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U2 - 10.1016/j.jallcom.2011.10.062
DO - 10.1016/j.jallcom.2011.10.062
M3 - Article
AN - SCOPUS:84862810807
SN - 0925-8388
VL - 522
SP - 3
EP - 8
JO - Journal of Alloys and Compounds
JF - Journal of Alloys and Compounds
ER -