High Power Characteristics of Lead-Free Piezoelectric Ceramics

被引：73

作者：

Lee, Hyeong Jae ^{[1
]}

Ural, Seyit O. ^{[2
]}

Chen, Lei ^{[1
]}

Uchino, Kenji ^{[2
,3
]}

Zhang, Shujun ^{[1
]}

机构：

[1] Penn State Univ, Mat Res Inst, University Pk, PA 16802 USA

[2] Penn State Univ, Int Ctr Actuators & Transducers, University Pk, PA 16802 USA

[3] Off Naval Res, Minato Ku, Tokyo 1060032, Japan

来源：

JOURNAL OF THE AMERICAN CERAMIC SOCIETY | 2012年 / 95卷 / 11期

关键词：

TEMPERATURE; VIBRATION; VOLTAGE; CUO;

D O I：

10.1111/j.1551-2916.2012.05462.x

中图分类号：

TQ174 [陶瓷工业]; TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

High power characteristics of lead-free (Bi,Na)TiO3 (BNT) and BaTiO3 (BT)-based piezoceramics were investigated and compared to commercial hard Pb(Zr,Ti)O-3 PZT materials. Acceptor-modified BNT and BT-based ceramics showed typical hardening characteristics, exhibiting high mechanical quality factor Q(m) > 800 and low dielectric loss, <0.01, comparable to hard PZT ceramics. Of particular significance is that BNT-based ceramics were found to exhibit minimal variation of resonance frequency shift and high Q(m) under high level vibration velocity, being similar to 0.6% and similar to 800 at 0.25 m/s, respectively, due to the high domain stability associated with their high coercive fields, being on the order of 35 kV/cm.

引用

页码：3383 / 3386

页数：4

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