Effect of sintering temperature on microstructure and piezoelectric properties of Pb-free BiFeO3-BaTiO3 ceramics in the composition range of large BiFeO3 concentrations

被引：9

作者：

Cen, Zhenyong ^{[1
]}

Yang, Huabin ^{[1
]}

Zhou, Changrong ^{[1
]}

Zhou, Qin ^{[1
]}

Cheng, Jun ^{[1
]}

Yuan, Changlai ^{[1
]}

Li, Weizhou ^{[2
]}

机构：

[1] Guilin Univ Elect Technol, Sch Mat Sci & Engn, Guilin 541004, Guangxi, Peoples R China

[2] Guangxi Univ, Sch Mat Sci & Engn, Nanning 530004, Guangxi, Peoples R China

来源：

JOURNAL OF ELECTROCERAMICS | 2013年 / 31卷 / 1-2期

关键词：

Electronic materials; Sinering temperature; Electrical properties; Piezoelectricity; MORPHOTROPIC-PHASE-BOUNDARY; HIGH CURIE-TEMPERATURE; DIELECTRIC-PROPERTIES; SOLID-SOLUTION; CRYSTALLINE SOLUTIONS; ELECTRICAL-PROPERTIES; THERMAL-STABILITY; (1-X)BISCO3-XPBTIO(3); SIZE;

D O I：

10.1007/s10832-013-9803-2

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 (1-x)BiFeO3-xBaTiO(3) [(1-x)BF-xBT] piezoelectric ceramics in the range of large BF concentrations were prepared by conventional oxide-mixed method at various sintering temperatures. The sintering temperatures have a significant effect on the microstructure of the ceramics, and the composition has a remarkable effect on optimal sintering temperature of the ceramics, which are closely related with piezoelectric properties. The grain size increased with increasing sintering temperature and the optimal sintering temperature increased with increasing BT content. The ceramics with x = 0.275 sintered at 990 A degrees C exhibit enhanced electrical properties of d (33) = 136pC/N and k (p) = 0.312 due to the polarization rotation mechanisms at MPB and desired microstructure. These results show that the ceramic with x = 0.275 is a promising lead-free high-temperature piezoelectric material.

引用

页码：15 / 20

页数：6

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