ELECTROMECHANICAL CHARACTERIZATION AND MODELING ANALYSIS OF PIEZOELECTRIC CERAMIC FIBERS WITH PT CORE
Piezoelectric ceramic fiber with metal core is one of new type of piezoelectric function devices, since it was successfully fabricated in recent years. In this paper, the green fibers were fabricated by extruding a mixture of 0.55Pb(Ni1/3Nb2/3)O3-0.45Pb(Zr0.3Ti0.7)O3 powder and organic solvent surround a Pt core. The result of XRD spectra shows that the PNN-PZT ceramic is a pure perovskite structure and no pyrochlore phase. Besides, the surface of fiber with dense structure and homogeneous grain size were observed by SEM. The ferroelectric characterization was tested by TF Analyzer 2000 system at room temperature. The remanent polarization of 3.62 C/cm2, the saturation polarization of 6.29 C/cm2, and the coercive field strength of 3.57kV/cm of sample fiber were obtained. Considering that both the polarization and electric field are radial, we present an analytical approach to deducing the electromechanical characterization, the resonance and anti-resonance frequencies, and capacitance of the MPF was measured by HP 4294A Impedance Analyzer. This work may be extended to investigating the characterization and application of piezoelectric ceramic fiber with metal core.
metal core piezoelectric fiber pnn-pzt x-ray diffraction ferroelectric characterization piezoelectric characterization
Jianzhou Du, Jinhao Qiu Kongjun Zhu, Hongli Ji, Jun Luo
The Ministry of Education Key Laboratory of Aircraft Structural Mechanics and Control,College of Aerospace Engineering, Nanjing University of Aeronautics and Astronautics,Nanjing, 210016, China
国际会议
南京
英文
207-210
2010-10-22（万方平台首次上网日期，不代表论文的发表时间）