Low-temperature sintering and piezoelectric properties of CuO-added 0.95(Na0.5K0.5)NbO3-0.05BaTiO3 ceramics

被引：89

作者：

Park, Hwi-Yeol

Ahn, Cheol-Woo

Cho, Kyung-Hoon

Nahm, Sahn ^{[1
]}

Lee, Hyeung-Gyu

Kang, Hyung-Won

Kim, Duk-Hee

Park, Kyeong-Soon

机构：

[1] Korea Univ, Dept Mat Sci & Engn, Seoul 136701, South Korea

[2] Korea Elect Technol Inst, Gyeonggi Do 463816, South Korea

[3] Innochips Tecnol, Kyonggi Do 429010, South Korea

[4] Sejong Univ, Dept Adv Mat Engn, Seoul 143747, South Korea

来源：

JOURNAL OF THE AMERICAN CERAMIC SOCIETY | 2007年 / 90卷 / 12期

关键词：

Grain growth - Grain size and shape - Piezoelectricity - Sintering - Solid state reactions;

D O I：

10.1111/j.1551-2916.2007.02070.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：

The sintering temperature of 0.95(Na0.5K0.5)NbO3-0.05BaTiO(3) (NKN-BT) ceramics needs to be decreased below 1000 degrees C to prevent Na2O evaporation, which can cause difficulties in poling and may eventually degrade their piezoelectric properties. NKN-BT ceramics containing CuO were well sintered at 950 degrees C with grain growth. Poling was easy for all specimens. Densification and grain growth were explained by the formation of a liquid phase. The addition of CuO improved the piezoelectric properties by increasing the grain size and density. High piezoelectric properties of d(33) = 230 pC/N, k(p) = 37%, and epsilon(T)(3)/epsilon(0)=1150 were obtained from the specimen containing 1.0 mol% of CuO synthesized by the conventional solid-state method.

引用

页码：4066 / 4069

页数：4

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