Piezoelectric and dielectric characteristics of lead-free BNKLBT ceramic thick film and multilayered piezoelectric actuators

被引：14

作者：

Choy, S. H. ^{[1
,2
]}

Jiang, X. P. ^{[1
,2
,3
]}

Kwok, K. W. ^{[1
,2
]}

Chan, H. L. W. ^{[1
,2
]}

机构：

[1] Hong Kong Polytech Univ, Dept Appl Phys, Kowloon, Hong Kong, Peoples R China

[2] Hong Kong Polytech Univ, Mat Res Ctr, Kowloon, Hong Kong, Peoples R China

[3] Jingdezhen Ceram Inst, Dept Mat Sci & Engn, Jingdezhen 333001, Jiangxi, Peoples R China

来源：

CERAMICS INTERNATIONAL | 2010年 / 36卷 / 08期

关键词：

Electrical properties; Mechanical properties; Perovskites; Actuators; FERROELECTRIC PROPERTIES; TRANSDUCER; TITANATE; SYSTEM;

D O I：

10.1016/j.ceramint.2010.07.030

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：

Lead-free piezoelectric 0.885(Bi0.5Na0.5)TiO3-0.05(Bi0.5K0.5)TiO3-0.015(Bi0.5Li0.5)TiO3 0.05BaTiO(3) ceramics (abbreviated as BNKLBT-1.5) were prepared by a conventional mixed oxide method. The composition has a piezoelectric d(33) constant of 154 x 10(-12) C/N, an electromechanical coupling coefficient k(t) of 0.519, a relatively low dissipation factor (tan delta = 1.6%) at 1 kHz. BNKLBT-1.5 multilayered actuators have been fabricated using a roll-casting technique. Each single layer has dimensions of 9.0 mm x 9.0 mm x 0.2 mm. Four multilayer actuators with 5, 10, 15 and 20 layers have been fabricated. Their capacitance and displacement under an a.c. field were measured. The capacitance measured at 1 kHz is 9.64 nF, 14.69 nF, 25.36 nF, 32.59 nF and the displacement measured at 5 kHz is 867 pm/V, 1331 pm/V, 2060 pm/V, 2442 pm/V, respectively. (C) 2010 Elsevier Ltd and Techna Group S.r.l. All rights reserved.

引用

页码：2345 / 2350

页数：6

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