Effect of Lead Contents on the Properties of PMSZT Piezoelectric Ceramics

摘要

The effects of Pb content on crystallographic phase,microstructure,electric-properties of PMSZT piezoelectric ceramics were studied.The crystallographic phase and microstructure of the ceramics were examined by using X-ray diffraction(XRD)and scanning electron microscopy(SEM).The experimental result shows that the samples consist of a mixture of tetragonal and rhombohedral phases in the range of lead contents x=0.95-1.06,grains grow up homogeneously and the minimum value of Curie temperature was obtained with x=1.02.With Pb content x1.02,the Curie temperature moves towards a high temperature.A well-situated electric-properties ofεT 33 /ε 0 (1660),d 33 (344pC/N),K p (0.684),Q m (2350),tan δ(0.0030)were obtained when lead content x=1.02.