Low-Temperature Sintered K0.5Na0.5NbO3-Based Ceramics for Vibratory Gyro-sensor Applications

被引：2
|
作者：
Wong, Mau Tak [1 ]
Kwok, Kin Wing
机构：
[1] Hong Kong Polytech Univ, Dept Appl Phys, Kowloon, Hong Kong, Peoples R China
来源：
INTERNATIONAL JOURNAL OF APPLIED CERAMIC TECHNOLOGY | 2015年 / 12卷
关键词：
PIEZOELECTRIC PROPERTIES;
D O I：
10.1111/ijac.12344
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：
0.91K(0.47)Na(0.47)Li(0.06)NbO(3)-0.09NaSbO(3) lead-free piezoelectric ceramics were prepared at 1000 degrees C using a sintering aid comprising of Cu and Ba in a molar ratio of 71.5/28.5. A dense structure with a high density of 4.43g/cm(3) was obtained for the ceramic added with 2.5 wt% of the sintering aid. Probably due to the smaller grains and doping of Cu2+, the piezoelectric coefficient and dielectric loss were reduced to 120 pC/N and 1.0%, respectively. The ceramics were then fabricated into vibratory gyro sensors of dimensions 0.6mmx0.6mmx4mm; and good sensitivity (0.7mV/dps) was obtained in the range of -360 to 360dps.
引用
收藏
页码：E149 / E155
页数：7
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