Low-Temperature Sintering of Bi0.5(Na,K)0.5TiO3 for Multilayer Ceramic Actuators

被引：23

作者：

Ahn, Chang Won ^{[1
,2
]}

Kim, Hee Sung ^{[1
,2
]}

Woo, Won Seok ^{[1
,2
]}

Won, Sung Sik ^{[1
,2
]}

Seog, Hae Jin ^{[1
,2
]}

Chae, Song A. ^{[1
,2
]}

Park, Bong Chan ^{[1
,2
]}

Jang, Ki Bong ^{[3
]}

Ok, Yun Po ^{[3
]}

Chong, Hyon Ho ^{[3
]}

Kim, Ill Won ^{[1
,2
]}

机构：

[1] Univ Ulsan, Dept Phys, Ulsan 680749, South Korea

[2] Univ Ulsan, EHSRC, Ulsan 680749, South Korea

[3] Samjeon Co Ltd, R&D Ctr, Ulsan 689934, South Korea

来源：

JOURNAL OF THE AMERICAN CERAMIC SOCIETY | 2015年 / 98卷 / 06期

关键词：

LEAD-FREE PIEZOCERAMICS; PIEZOELECTRIC CERAMICS; STRAIN; PERSPECTIVE;

D O I：

10.1111/jace.13564

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：

We investigated the influence of CuO amount (0.5-3.0mol%), sintering temperature (900 degrees C-1000 degrees C), and sintering time (2-6h) on the low-temperature sintering behavior of CuO-added Bi-0.5(Na0.78K0.22)(0.5)TiO3 (BNKT22) ceramics. Normalized strain (S-max/E-max), piezoelectric coefficient (d(33)), and remanent polarization (P-r) of 1.0mol% CuO-added BNKT22 ceramics sintered at 950 degrees C for 4h was 280pm/V, 180pC/N, and 28C/cm(2), respectively. These values are similar to those of pure BNKT22 ceramics sintered at 1150 degrees C. In addition, we investigated the performance of multilayer ceramic actuators made from CuO-added BNKT22 in acoustic sound speaker devices. A prototype sound speaker device showed similar output sound pressure levels as a Pb(Zr,Ti)O-3-based device in the frequency range 0.66-20 kHz. This result highlights the feasibility of using low-cost multilayer ceramic devices made of lead-free BNKT-based piezoelectric materials in sound speaker devices.

引用

页码：1877 / 1883

页数：7

共 20 条

[1] Piezoelectric and dielectric characteristics of lead-free BNKLBT ceramic thick film and multilayered piezoelectric actuators [J].