详细信息
铁掺杂Na0.5Bi0.5TiO3基无铅压电陶瓷的微结构与电学性能
Microstructure and electrical properties of Fe-doped Na0.5Bi0.5TiO3-based piezoelectric ceramics
文献类型:期刊文献
中文题名:铁掺杂Na0.5Bi0.5TiO3基无铅压电陶瓷的微结构与电学性能
英文题名:Microstructure and electrical properties of Fe-doped Na0.5Bi0.5TiO3-based piezoelectric ceramics
作者:陈小明 谢应松 罗海奇 廖运文 肖定全
第一作者:陈小明
机构:[1]贵州理工学院贵州省轻金属材料制备技术重点实验室,贵州贵阳550003;[2]贵州理工学院材料与冶金工程学院,贵州贵阳550003;[3]西华师范大学化学化工学院,四川南充637002;[4]四川大学材料科学系,四川成都610064
第一机构:贵州理工学院
年份:2019
卷号:38
期号:10
起止页码:90-93
中文期刊名:电子元件与材料
外文期刊名:Electronic Components and Materials
收录:CSTPCD;;北大核心:【北大核心2017】;CSCD:【CSCD_E2019_2020】;
基金:贵州省教育厅自然科学成长项目(黔教合KY字[2018]253);贵州理工学院大学生创新创业训练计划项目(201814440104)
语种:中文
中文关键词:Na0.5Bi0.5TiO3基陶瓷;无铅;微观结构;电学性能
外文关键词:Na0.5Bi0.5TiO3-based piezoelectric ceramics;lead-free;microstructure;electric properties
摘要:采用传统陶瓷工艺制备0.855Na0.5Bi0.5TiO3-0.12K0.5Bi0.5TiO3-0.025BaTiO3+x%Fe2O3(x=0,0.1,0.3,0.5,0.7,1.0,1.5,2.0)(简写BNKBTF-x)无铅压电陶瓷。通过X射线衍射(XRD),扫描电镜(SEM)等分析测试,研究Fe掺杂对BNKBTF-x陶瓷体系的晶相结构、微观形貌和电学性能的影响。研究表明:当Fe含量少于质量分数1.5%时,BNKBTF-x陶瓷呈现单一的钙钛矿结构,而当Fe含量在质量分数1.5%以上时,有杂相的存在。随着Fe含量的增加,陶瓷晶粒逐渐增大。当Fe含量达到质量分数1.5%时有长方晶形出现。当Fe含量在质量分数0.1%附近时陶瓷的致密性得到改善,BNKBTF-0.3陶瓷综合性能最佳:d33=161pC/N,KP=0.29,εr=1153,tanδ=0.034,Qm=108。
Fe-doped 0.855Na0.5Bi0.5TiO3-0.12K0.5Bi0.5TiO3-0.025BaTiO3+x%Fe2O3 (BNKBTF-x) lead-free piezoelectric ceramics were prepared by the conventional sintering technique.The influence of Fe on the crystal phase, microstructure and electric properties of BNKBTF-x ceramics were systematically investigated through X-ray diffraction (XRD), SEM, etc.X-ray diffraction results show that the pure perovskite structure of Fe-doped BNKT-BT ceramics is achieved in the range of x<1.5, while the impurity phase exists when χ≥1.5.The introduction of Fe can promote the grain growth.These grains are partially rectangular when χ reaches 1.5.Moreover, the density of ceramics is improved when χ=0.1.BNKBTF-0.3 ceramics exhibits the best performance: d33 = 161 pC/N, KP =0.29,εr = 1153, tanδ= 0.034, Qm = 108.
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