Preparation and Characterization of Lead-free Piezoelectric Ceramics
(K,Na)NbO3-based piezoelectric ceramics are promising candidates for practical applications of lead-free piezoelectric materials due to their excellent piezoelectric properties. In this paper, lead-free piezoelectric ceramics (K0.44Na0.52Li0.04)(Nb0.86Ta0.10Sb0.04)O3 (KNL-NTS) were successfully fabricated by traditional ceramics processing. The effects of sintering temperature on the structure, density and electrical properties of KNL-NTS ceramics were investigated. Crystal phases of both calcined powders and KNL-NTS ceramics have orthorhombic structure similar to that of KNbO3 ceramics. The piezoelectric coefficient first increases and then decreases with sintering temperature in the 1100-1180 ℃ range. KNL-NTS ceramics sintered at 1160 ℃ shows the maximum piezoelectric coefficient of about 199 pC·N-1 and the maximum remnant polarization of 18.75 μC·cm-2, with the corresponding 10.95 kV·cm-1 coercive field and 4.74 g/cm3 density.
Qiang Chen Jinxu Li Lihui Zhang Yang Bai Yanjing Su Lijie Qiao Alex A.Volinsky
Corrosion and protection Center, Key Laboratory for Environmental Fracture (MOE), University ofScien Department of Mechanical Engineering, University of South Florida, Tampa FL 33620
国际会议
长沙
英文
189-193
2011-06-30（万方平台首次上网日期，不代表论文的发表时间）