Effects of improved process for CuO-doped NKN lead-free ceramics on high-power piezoelectric transformers

Song Ling Yang, Cheng Che Tsai, Yi Cheng Liou, Cheng Shong Hong, Bing Jing Li, Sheng Yuan Chu

研究成果: Article

7 引文 斯高帕斯(Scopus)

摘要

In this paper, the effects of the electrical properties of CuO-doped (Na 0.5K 0.5)NbO 3 (NKN) ceramics prepared separately using the B-site oxide precursor method (BO method) and conventional mixed-oxide method (MO method) on high-power piezoelectric transformers (PTs) were investigated. The performances of PTs made with these two substrates were compared. Experimental results showed that the output power and temperature stability of PTs could be enhanced because of the lower resonant impedance of the ceramics prepared using the BO method. In addition, the output power of PTs was more affected by the resonant impedance than by the mechanical quality factor (Q m) of the ceramics. The PTs fabricated with ceramics prepared using the BO method showed a high efficiency of more than 94% and a maximum output power of 8.98 W (power density: 18.3 W/cm 3) with temperature increase of 3°C under the optimum load resistance (5 kΩ) and an input voltage of 150 V pp. This output power of the lead-free disk-type PTs is the best reported so far.

原文English
文章編號6141146
頁(從 - 到)2555-2561
頁數7
期刊IEEE Transactions on Ultrasonics, Ferroelectrics, and Frequency Control
58
發行號12
DOIs
出版狀態Published - 2011 十二月 1

All Science Journal Classification (ASJC) codes

  • Instrumentation
  • Acoustics and Ultrasonics
  • Electrical and Electronic Engineering

指紋 深入研究「Effects of improved process for CuO-doped NKN lead-free ceramics on high-power piezoelectric transformers」主題。共同形成了獨特的指紋。

  • 引用此