Structure and Electrical Properties of PSN-PMN-PZT Piezoelectric Ceramics for Underwater Acoustic Transducer
Piezoelectric Pb(Sb1/2Nb1/2)O3-Pb(Mn1/3Nb2/3)O3-PbZrO3-PbTiO3 (PSN-PMN-PZT) quaternary ceramics with the various contents of Pb(Mn1/3Nb2/3)O3 from 4 to 10mol％ were prepared. The phase structure of the system was delineated by X-ray diffraction analysis. The surface morphology was examined by SEM. The piezoelectric and dielectric properties were also measured. X-ray diffraction patterns showed that the PSN-PMN-PZT piezoelectric ceramics was composed of tetragonal phase with perovskite-type structure. Study on the influence of Pb(Mn1/3Nb2/3)O3 additives on dielectric and piezoelectric properties indicated that the PSN-PMN-PZT quaternary system exhibited a high mechanical quality factor and well-situated piezoelectric properties. The optimized results of d33 =332pC/N, d31= -105pC/N, Kp=0.58, K31=0.34 and Qm=1658 can be obtained at 6 mol％ Pb(Mn1/3Nb2/3)O3. The obtained electrical properties make this composition a good candidate for underwater acoustic devices.
PSN-PMN-PZT piezoelectric ceramics Underwater acoustic transducer Phase structure Electrical Properties
Haiyan Chen Lihua Dong
Institute of Marine Materials Science and Engineering, Shanghai Maritime University, Shanghai, 200135, China
国际会议
青岛
英文
227-230
2009-10-09（万方平台首次上网日期，不代表论文的发表时间）