Influence of secondary phase on polymorphic phase transition in Li-doped KNN lead-free ceramics

被引：34

作者：

Fu, Zhengqian ^{[1
,2
,3
]}

Yang, Jie ^{[4
]}

Lu, Ping ^{[1
,2
]}

Zhang, Linlin ^{[1
,2
]}

Yao, Heliang ^{[1
,2
]}

Xu, Fangfang ^{[1
,2
,3
]}

Li, Yongxiang ^{[3
,4
]}

机构：

[1] Chinese Acad Sci, Shanghai Inst Ceram, State Key Lab High Performance Ceram & Superfine, Shanghai 200050, Peoples R China

[2] Shanghai Inst Mat Genome, Shanghai, Peoples R China

[3] ShanghaiTech Univ, Sch Phys Sci & Technol, Shanghai 201210, Peoples R China

[4] Chinese Acad Sci, Shanghai Inst Ceram, Key Lab Inorgan Funct Mat & Devices, Shanghai 200050, Peoples R China

来源：

CERAMICS INTERNATIONAL | 2017年 / 43卷 / 15期

基金：

中国国家自然科学基金;

关键词：

KNN; Lead-free; Piezoceramic; Secondary phase; PPT; FREE PIEZOELECTRIC CERAMICS; FREE PIEZOCERAMICS; ELECTRICAL-PROPERTIES; MICROSTRUCTURE; BEHAVIOR;

D O I：

10.1016/j.ceramint.2017.06.185

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：

Shifting polymorphic phase transition (PPT) to room temperatures in Li-doped KNN (KNLN) can greatly increase its piezoelectric constant. However, pure phase KNLN ceramics could hardly be obtained since secondary phases were formed inevitably during its synthesis. Here, we examined the structure, composition and distribution of the secondary phase and their influences on the phase compositions in KNLN ceramics. The results show that orthorhombic tetragonal phase boundary cannot shift to room temperature when considerable amount of secondary phase exist in KNLN piezoceramics.

引用

页码：12893 / 12897

页数：5

共 26 条

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