摘要
采用传统工艺制备了（Na0.84K0.16）0.5Bi0.5TiO3压电陶瓷,研究掺杂离子Sb3＋对（Na0.84K0.16）0.5Bi0.5TiO3微观结构和电性能的影响。结果表明烧结温度在1160℃时,样品密度达到最大值5.85g/cm3;X射线衍射（XRD）分析所有陶瓷样品均为钙钛矿相,Sb2O3的掺杂只改变晶胞体积或产生铋离子空位或钠离子空位,不形成异相;掺杂量在0.4%~0.6%时介电常数先增加后减小,介电损耗呈现增大趋势;掺杂0.5%的Sb2O3时,d33最大为142pC/N。
A new lead-free piezoelectric ceramics of（Na0.84K0.16）0.5Bi0.5TiO3 was prepared by conventional solid state reaction,the influence of Sb3＋ doping on microstruture and properties of the lead free piezoelectric ceramics was investigated.The results show that the sample density reaches maximum version 5.85g/cm3 sintered at 1160℃,all compositions are of pure perovskite structure solid state,Sb2O3 doping changes crystal cell dimension and produces Bi3＋ or Na＋ vacancy and without impurity phase;doping in 0.4%~0.6%,dielectric constant first increases,then decreases,dielectric loss present increasing trend;doping 0.5% Sb2O3,d33 appears maximum 142pC/N.
出处
《功能材料》
EI
CAS
CSCD
北大核心
2011年第B11期821-824,共4页
Journal of Functional Materials
基金
陕西省教育厅基金资助项目(2010JK456)
温州科技局基金资助项目(H20100030)
陕西科技大学校内自选基金资助项目(ZX10-24)
关键词
无铅压电陶瓷
钛酸铋钠
介电性能
压电性能
lead-free piezoelectric ceramics
sodium bismuth titanate
dielectrics properties
piezoelectric properties
