(1-x)(K0.475Na0.475Li0.05)(Nb0.975Sb0.025)O3-xBiFeO3 lead-free piezoelectric ceramics with CuO sintering aid
(1-x) (K0.475Na0.475Li0.05)(Nb0.975Sb0.025)O3-xmolBiFeO3 (x=0, 0.002, 0.004, 0.006, 0.008) doped with 0.8mol％CuO lead-free piezoelectric ceramics were prepared by the solid state reaction technique. X-ray diffraction patterns suggested that all the ceramics presented perovskite structure. The compositional dependence of the phase structure and the electrical properties of the ceramics were studied. The ceramic (x=0.002) near room temperature exhibited excellent electrical properties (piezoelectric constant d33=172pC/N, planar electromechanical coupling factor kp=0.43, and dielectric constant εT33 / ε0=418). A relatively high mechanical quality factor (Qm=200) was also obtained in this particular composition. All these results revealed that this system might become a promising candidate for lead-free piezoelectric materials.
Piezoelectric ceramics lead free BiFeO3 addition KNN-LN-LS
Yongjie Zhao Yuzhen Zhao Rongxia Huang Rongzheng Liu Heping Zhou
State Key Laboratory of New Ceramics and Fine Processing, Department of Materials Science andEnginee State Key Laboratory of New Ceramics and Fine Processing, Department of Materials Science and Engine
国际会议
11th IUMRS International Conference in Asia(第十一届国际材联亚洲材料大会 IUMRS-ICA 2010)
青岛
英文
228-232
2010-09-25（万方平台首次上网日期，不代表论文的发表时间）