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[1]李鸿鹏,刘云飞,吕忆农,等.制备工艺对织构化0.94(Na0.5K0.5)NbO3-0.06LiNbO3无铅压电陶瓷结构及性能的影响[J].南京工业大学学报(自然科学版),2013,35(01):1-41.[doi:10.3969/j.issn.1671-7627.2013.01.009]
 LI Hongpeng,LIU Yunfei,LÜ,et al.Effects of processing on structures and properties of textured 0.94(Na0.5K0.5)NbO3-0.06LiNbO3 lead-free piezoelectric ceramics[J].Journal of NANJING TECH UNIVERSITY(NATURAL SCIENCE EDITION),2013,35(01):1-41.[doi:10.3969/j.issn.1671-7627.2013.01.009]
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制备工艺对织构化0.94(Na0.5K0.5)NbO3-0.06LiNbO3无铅压电陶瓷结构及性能的影响()
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《南京工业大学学报(自然科学版)》[ISSN:1671-7627/CN:32-1670/N]

卷:
35
期数:
2013年01期
页码:
1-41
栏目:
出版日期:
2013-01-20

文章信息/Info

Title:
Effects of processing on structures and properties of textured 0.94(Na0.5K0.5)NbO3-0.06LiNbO3 lead-free piezoelectric ceramics
文章编号:
1671-7627(2013)01-0041-06
作者:
李鸿鹏刘云飞吕忆农吴键张国防
南京工业大学 材料科学与工程学院 材料化学工程国家重点实验室,江苏 南京 210009
Author(s):
LI Hongpeng LIU Yunfei LÜ Yinong WU Jian ZHANG Guofang
State Key Laboratory of Materials-Oriented Chemical Engineering,College of Materials Science and Engineering, Nanjing University of Technology, Nanjing 210009, China
关键词:
0.94(Na0.5K0.5)NbO3-0.06LiNbO3 织构化 压电性能 极化条件
Keywords:
0.94(Na0.5K0.5)NbO3-0.06LiNbO3 textured piezoelectric properties poling condition
分类号:
TB282
DOI:
10.3969/j.issn.1671-7627.2013.01.009
文献标志码:
A
摘要:
采用两步法烧结工艺制备高织构化的0.94(Na0.5K0.5)NbO3-0.06LiNbO3(简称为KNLN6)无铅压电陶瓷。采用X线衍射仪(XRD)、扫描电子显微镜(SEM)、铁电测试系统和准静态分析仪研究制备工艺对织构化KNLN6陶瓷显微结构和铁电压电性能的影响,并确定最佳的极化工艺。结果表明:随着第一步烧结温度的提高,织构化KNLN6压电陶瓷有序度逐渐提高,晶粒尺寸逐渐变大,矫顽场(Ec)逐渐降低,剩余极化强度(Pr)先增加后降低。当极化条件为极化电压25 kV/cm、极化温度80 ℃、极化时间15 min时,在1 180 ℃保温5 min,然后在1 000 ℃保温10 h的高织构化KNLN6陶瓷的压电常数(d33)达到282 pC/N,较之前文献报导提高20%。
Abstract:
High textured 0.94(Na0.5K0.5)NbO3-0.06LiNbO3(abbreviated as KNLN6)lead-free piezoelectric ceramics was prepared using two-step sintering process. The effects on the microstructures, ferroelectric and piezoelectric properties of KNLN6 ceramics were investigated by X-ray diffractometer(XRD), scanning electron microscope(SEM), ferroelectric testing system, and quasi-static analyzer, and the optimum polarization process was determined. The results showed that with the increase of first step sintering temperature, the orientation degree and the grain size of textured KNLN6 piezoelectric ceramics gradually increased, the coercive field Ec gradually decreased, and the remnant polarization Pr initially increased and then decreased. Under the poling condition with poling electric field 25 kV/cm, poling temperature 80 ℃, and poling time 15 min, the piezoelectric constant d33 of high textured KNLN6 piezoceramic was increased by 20% and reached 282 pC/N at first step sintering temperature 1 180 ℃ for 5 min, and at second step sintering temperature 1 000 ℃ for 10 h.

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备注/Memo

备注/Memo:
收稿日期:2012-03-09
基金项目:江苏高校优势学科建设工程资助项目
作者简介:李鸿鹏(1987—),男,吉林辽源人,硕士,主要研究方向为压电陶瓷材料; 吕忆农(联系人),教授,E-mail:ynlu@njut.edu.cn..
更新日期/Last Update: 2013-01-20