Comparative Study between Conventional and Microwave Sintered Lead-Free BNKT Ceramics

被引：7

作者：

Chen, Pin-Yi ^{[1
,2
]}

Chou, Chen-Chia ^{[1
]}

Tseng, Tseung-Yuen ^{[3
]}

Chen, Haydn H. D. ^{[4
]}

机构：

[1] Natl Taiwan Univ Sci & Technol, Dept Mech Engn, Taipei 106, Taiwan

[2] Ming Chi Univ Technol, Dept Mech Engn, Taipei 243, Taiwan

[3] Natl Taipei Univ Technol, Dept Mat & Mineral Resources Engn, Taipei 106, Taiwan

[4] Tunghai Univ, Dept Phys, Taichung 407, Taiwan

来源：

FERROELECTRICS | 2009年 / 381卷

关键词：

Piezoelectric; lead-free; ferroelectric; microwave sintering;

D O I：

10.1080/00150190902877528

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Lead free [(1-x)Bi0.5Na0.5TiO3-(x)Bi0.5K0.5TiO3] ceramics with x=0.18 were prepared by using microwave sintering technique. XRD of these ceramics show co-existence of tetragonal and rhombohedral phases. Smaller grain size and more uniform microstructure were observed in microwave sintered sample. It might result from different diffusion mechanism. The activation energy of grain growth was calculated. The results display in microwave sintered sample is lower (167kJ/mol) than that for conventional one (260kJ/mol). It implies microwave sintered sample just need lower energy for densification. The remanent polarization and piezoelectric constants of microwave sintered samples are higher than that of conventional sintered samples. Relation among processing kinetics, microstructural characteristics and electrical properties was discussed.

引用

页码：196 / 200

页数：5

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