Research of High Sensitivity Piezoelectric Ceramics Based on Pb(Sb1/2Nb1/2)O3-Pb(ZrTi)O3
It is of great practical significance to improve the sensitivity and enhance the stability of lead zirconate titanate(PZT)piezoelectric ceramics under hydrostatic pressure condition.In this work,the xPb(Sb1/2Nb1/2)O3-(1-x)Pb(Zr0.52Ti0.48)(PSN-PZT,x=0.018,0.020,0.022,0.025,0.030)piezoelectric ceramics were prepared with conventional solid-state method.The influence of PSN on the phase,microscopic morphology,curie temperature,dielectric property,ferroelectric property,and piezoelectric properties of ceramics has investigated.The sensitivity of PSN-PZT and traditional high sensitivity piezoelectric ceramics was measured comparatively within the hydrostatic pressure of 5～30 MPa.The results show that the incorporation of PSN can improve the sensitivity and enhance the hydrostatic figure of merit(HFOM)of PZT piezoelectric ceramics significantly.When x=0.020,the PSN-PZT ceramics have the best electric properties,planar electromechanical coupling factor kp=0.641,longitudinal piezoelectric strain constant d33=325 pC/N,transverse piezoelectric voltage constant g31=16.642 mV·m·N-1,isostatic piezoelectric voltage constant gh(5 MPa)=9.91 mV·m-1·Pa-1,HFOM(5 MPa)=679×10-15 Pa-1.
国家科技期刊平台
NSTL
万方数据
