人工晶体学报2012，Vol.41Issue(4)：916-921,6.
Na0.5Bi0.5TiO3-K0.5Bi0.5TiO3-BaMnO3无铅压电陶瓷的结构与电性能
Structure and Electrical Properties of Na0.5Bi0.5TiO3-K0.5Bi0.5TiO3-BaMnO3 Lead-free Piezoelectric Ceramics
摘要
Abstract
Lead-free piezoelectric ceramics (0. 8 - x) Na0.5 Bi0.5TiO3-0. 2X0.5 Bi0.5 TiO3-xBaMnO3 (abbreviated as NBT-KBT-BM) were prepared by the solid state reaction. The phase composition, microstructure and electrical properties for NBT-KBT-BM samples with different BM content (x=0,0. 25% , 0.50% , 0.75% , 1.00% , 1. 25% in mole) were investigated. It is found that all the samples exhibite a pure perovskite phase. Sintering temperature of NBT-KBT ceramics after doping BM decreases and relative density increases compared with pure NBT-KBT. The piezoelectric constant d33, electromechanical planar coupling factor kp and mechanical quality factor Qm increase first and then decrease, while dielectric constant tanδ and depolarization temperature Td decrease as the BM content increasing. BM doping could reduce the coercive field Ec and increase the strength of the remanent polarization Pr, thus improving the ferroelectric properties. This system ceramics with the best comprehensive properties could be obtained at x =0.75% ; d33, Qm, kp, εr and tan5 is 167pC/N, 0.269,133, 774 and 2.93% , respectively.关键词
无铅压电陶瓷/钛酸铋钠/压电性能Key words
lead-free piezoelectric ceramics/ sodium-bismuth titanate/ piezoelectric properties分类
化学化工引用本文复制引用
江向平,古训玖,张凯韦,陈超,李小红,涂娜..Na0.5Bi0.5TiO3-K0.5Bi0.5TiO3-BaMnO3无铅压电陶瓷的结构与电性能[J].人工晶体学报,2012,41(4):916-921,6.基金项目
国家自然科学基金(50862005,51062005,91022027) （50862005,51062005,91022027）
江西省自然科学基金(2010GQW0037,2010GQW0038) （2010GQW0037,2010GQW0038）
江西省高等学校“先进陶瓷材料”科技创新团队 （）
江西省主要学科学术和技术带头人培养对象计划项目(2010DD00800) （2010DD00800）
江西省教育厅项目(GJJ10027,GJJ11196,GJJ11197,GJJ10226,GJJ11204) （GJJ10027,GJJ11196,GJJ11197,GJJ10226,GJJ11204）
江西省研究生创新基金(YC10A119) （YC10A119）
