硅酸盐学报2011，Vol.39Issue(5)：812-817,6.
(K0.52Na0.44Li0.04)(Nb0.86Ta0.10Sb0.04)O3-BiFeO3无铅压电陶瓷的电性能
Electrical Properties of (K0.52Na0.444Li0.04)(Nb0.86Ta0.10Sb0.04)O3-BiFeO3 Lead-Free Piezoelectric Ceramics
摘要
Abstract
Lead-free piezoelectric ceramics (1-x)(K0.52Na0.44Li0.04)(Nb0.86Ta0.10Sb0.04)O3-xBiFeO3 [(1-x)LF4-xBF] were prepared by solid state reaction method. The effect of BF content (0≤x≤ 0.010 00) on the microstructure and electrical properties of the ceramics were investigated. It is found that all the samples has a pure perovskite phase structure with the tetragonal symmetry. The relative density p and mechanical quality factor Qm of LF4-based ceramics increase significantly after BF is added. Moreover, the piezoelectric and ferroelectric properties of LF4-based ceramics increase first and then decrease with the increase of BF content. The ceramic with x=0.002 50 exhibits the optimal properties: the relative density p=98.6％, piezoelectric constant d33 = 276 pC/N, mechanical quality factor Qm =454, coercive field Ec=1.56 kV/mm, and remanent polarization Pr = 21.5 μC/cm2. Thermal annealing and aging studies indicate that the LF4-BF sample (x=0.002 50) possesses stable electrical properties, showing that the ceramic is a potential material for high temperature application.关键词
无铅压电陶瓷/固相反应法/压电性能/老化性能Key words
lead-free piezoelectric ceramics/ solid state reaction method/ piezoelectric properties/ aging properties分类
化学工程引用本文复制引用
余祖灯,江向平,杨庆,陈超,涂娜,周树兰..(K0.52Na0.44Li0.04)(Nb0.86Ta0.10Sb0.04)O3-BiFeO3无铅压电陶瓷的电性能[J].硅酸盐学报,2011,39(5):812-817,6.基金项目
国家自然科学基金(50862005,51062005,91022027) （50862005,51062005,91022027）
江西省教育厅项目(GJJ10027,GJJ11196,GJJ11197) （GJJ10027,GJJ11196,GJJ11197）
江西省高等学校"先进陶瓷材料"科技创新团队及江西省主要学科学术和技术带头人培养对象计划(2010DD00800)资助项目. （2010DD00800）
