Low-temperature sintered(Na_(1/2)Bi_(1/2))TiO_(3)-based incipient piezoceramics for co-fired multilayer actuator application

作     者：Pengyuan Fan Yangyang Zhang Shan-Tao Zhang Bing Xie Yiwei Zhu Mohsin Ali Marwat Weigang Ma Kai Liu Liang Shu Haibo Zhang 

作者机构：School of Materials Science andEngineeringState Key Laboratory of Material ProcessingDie&Mould TechnologyHuazhong University of Science and TechnologyWuhan430074China Information Engineering InstituteHuanghe Science and Technology CollegeZhengzhou450000China National Laboratory of Solid State MicrostructuresDepartment of Materials Science and EngineeringCollege of Engineering and Applied ScienceCollaborative Innovation Center of Advanced MicrostructuresNanjing UniversityNanjing210093China Research Centre for Functional CeramicsMinistry of EducationHuazhong University of Science and TechnologyWuhan430074China 

出 版 物：《Journal of Materiomics》 (无机材料学学报（英文）)

年 卷 期：2019年第5卷第3期

页      面：480-488页

核心收录：

学科分类：081702[工学-化学工艺] 08[工学] 0817[工学-化学工程与技术] 

基　　金：the generous support by the National Natural Science Foundation of China under grant no.51672092 and U1732117 by the Project of Henan Province Science and Technology(Grant No.172102210380) China Postdoctoral Science Foundation funded project no.2018M632847 the generous support by Wuhan Morning Light Plan of Youth Science and Technology(No.2017050304010299) 

主　　题：Lead-free piezoceramics (Na_(1/2)Bi_(1/2))TiO_(3) Low-temperature sintering Electric-field-induced strain 

摘      要：Low-temperature sintered(Na_(1/2)Bi_(1/2))_(0.935)Ba_(0.065)Ti_(0.975)(Fe_(1/2)Nb_(1/2))_(0.025)O_(3)(NBT-BT-0.025FN)lead-free incipient piezoceramics were investigated using high-purity Li_(2)CO_(3) as sintering *** the ≤0.5 wt%Li_(2)CO_(3) addition,the introduced Li^(+) cations precede to enter the A-sites of the perovskite lattice to compensate for the A-site *** the addition exceeds 0.5 wt%,the excess Lit cations will occupy B-sites and give rise to the generation of oxygen vacancies,which accelerate the mass transport and thus lower the sintering temperature effectively from 1100℃ down to 925℃.It was also found that a small amount of Lit addition has little effect on the phase structure and electromechanical properties of the system,but overweight seriously disturbs these characteristics because of the large lattice *** sintered NBT-BT-0.025FN incipient piezoceramics with 1.25 wt%Li_(2)CO_(3) addition at 925℃ provides a large strain of 0.33% and a corresponding large signal piezoelectric coefficient d_(33)^(*) of 550 pm/V at 60 kV/cm,indicating this system is a very promising candidate for lead-free co-fired multilayer actuator application.