Sintering properties of K0.5Na0.5NbO3 lead-free piezoelectric ceramics

ZHU Kong-jun; MENG Zhao-lei; QIU Jin-hao; WANG Dao-li; ZHAO Chun-sheng

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Sintering properties of K_0.5Na_0.5NbO₃ lead-free piezoelectric ceramics

Article | 更新时间：2020-08-12

- Sintering properties of K_0.5Na_0.5NbO₃ lead-free piezoelectric ceramics
- Optics and Precision Engineering Vol. 17, Issue 1, Pages: 132-137(2009)
- 作者机构：
  
  1. 南京航空航天大学智能材料与结构航空科技重点实验室,江苏南京 210016
  2. 南京航空航天大学智能材料与结构精密驱动研究所,江苏南京 210016
- 作者简介：
- 基金信息：
- DOI：
  CLC： TM282
- Received：19 April 2008，
  
  Revised：20 May 2008，
  
  Published：2009
- 稿件说明：
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朱孔军, 孟兆磊, 裘进浩, 王道利, 赵淳生. K0.5Na0.5NbO3无铅压电陶瓷的烧结特性[J]. 光学精密工程, 2009,17(1): 132-137

ZHU Kong-jun, MENG Zhao-lei, QIU Jin-hao, WANG Dao-li, ZHAO Chun-sheng. Sintering properties of K0.5Na0.5NbO3 lead-free piezoelectric ceramics[J]. Editorial Office of Optics and Precision Engineering, 2009,17(1): 132-137
朱孔军, 孟兆磊, 裘进浩, 王道利, 赵淳生. K0.5Na0.5NbO3无铅压电陶瓷的烧结特性[J]. 光学精密工程, 2009,17(1): 132-137 DOI：

ZHU Kong-jun, MENG Zhao-lei, QIU Jin-hao, WANG Dao-li, ZHAO Chun-sheng. Sintering properties of K0.5Na0.5NbO3 lead-free piezoelectric ceramics[J]. Editorial Office of Optics and Precision Engineering, 2009,17(1): 132-137 DOI：

摘要

为了制备高性能无铅压电陶瓷

采用固相合成法和水热法合成了(K

)NbO

(KNN)无铅压电陶瓷粉体。利用压制成型法在不同压力下成型

对不同粉体的烧结性能进行了对比

研究了粘结剂(PVA)添加量和陶瓷密度之间的关系

测量了用不同电压极化后陶瓷的压电特性

以及介电常数与温度之间的关系。结果表明:与固相合成法相比

水热合成的粉体有更好的烧结性

添加K会降低陶瓷的烧结性

陶瓷的密度对烧结温度非常敏感。1 050 ℃保温2 h得到的K

0.5

NbO

陶瓷具有较高的压电常数

(90 pC/N)

该陶瓷的居里温度为410 ℃。

Abstract

To fabricate high-performance lead-free piezoelectric ceramics

both the solid-state reaction method and the hydrothermal method were used to synthesize the (K

1－

)NbO

(KNN) lead-free ceramic powders in this work. The ceramic powders were shaped using press forming method at different pressures and the sintering properties of ceramics fabricated from different powders were investigated. Then

the relationship between the account of PVA and the density of ceramics was discussed. The piezoelectric constants of the KNN ceramics polarized at the different voltages

and the dielectric constants against temperatures were also measured. The results show that the powder prepared by hydrothermal method has better sinterability compared to that prepared by solid-state reaction method. Moreover

the addition of K content lowers the sinterability of ceramics. The density of ceramics is very sensitive to the sintering temperature. The K

0.5

NbO

ceramics fabricated at 1 050 ℃ for 2 h has higher

(90 pC/N)

and its Curie temperature is 410 ℃.

关键词

Keywords

references

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