利用传统固相烧结法制备了0.02Pb(Sb_(0.5)Nb_(0.5))O_3-0.98Pb_(1-2 x)Ba_xSr_x(Zr_(0.53)Ti_(0.47))O_3压电陶瓷(其中x=0.02,0.03,0.04,0.05).讨论了不同Ba、Sr复合掺杂量及烧结温度对陶瓷结构和电性能的影响.结果显示,当x=0.04,烧结...利用传统固相烧结法制备了0.02Pb(Sb_(0.5)Nb_(0.5))O_3-0.98Pb_(1-2 x)Ba_xSr_x(Zr_(0.53)Ti_(0.47))O_3压电陶瓷(其中x=0.02,0.03,0.04,0.05).讨论了不同Ba、Sr复合掺杂量及烧结温度对陶瓷结构和电性能的影响.结果显示,当x=0.04,烧结温度为1 260℃时,压电陶瓷的性能最佳,其中d_(33)=615 p C/N,ε_(33)/ε_0=2 224,tanδ=2.11%;然后把这个配方的陶瓷片安装到传感器中,测试其电荷灵敏度、最大横向灵敏度比和最大线性误差,电荷灵敏度为2.72 p C/(m·s^(-2)),最大横向灵敏度比小于5%,最大线性误差为2.97%,符合通用振动测试类型传感器使用要求.展开更多
Lead zirconate titanate(PSN-PZT) is widely utilized in various areas based on its desirable piezoelectrical properties and stable performance.In order to further improve its electrical properties,the ceramic samples,w...Lead zirconate titanate(PSN-PZT) is widely utilized in various areas based on its desirable piezoelectrical properties and stable performance.In order to further improve its electrical properties,the ceramic samples,which have been prepared by traditional solid-state sintering,then are re-heated by strong laser beam.Phase composition and micro-structure have been characterized through XRD,SEM and TEM.Also,Quasi-static d_(33) tester and the capacitance tester have been introduced for measuring electrical performances.The experimental results indicate that the ceramic samples are with more amount percentage tetragonal phase after laser re-heating.Cracks could be induced and initialized by higher input laser intensity.TEM results suggested that,when the input laser power is at 1000 W,tetragonal and rhombohedral phases are co-existed and the ceramic samples are with the best electrical properties.The ceramics heated by power of 1000 W present excellent electric properties,d_(33) increased 24.8%,and tanS decreased 9%,which is distinguish advance compared with original ceramics in solid reaction.展开更多
PSN-PZN-PZT + x wt. %Cr2O3, X = 0.0-0-9, were prepared by conventional mixed oxide techniques at sintering temperatures of 1220 degrees C-1300 degrees C for 2 h. The effect of sintering temperature on the microstructu...PSN-PZN-PZT + x wt. %Cr2O3, X = 0.0-0-9, were prepared by conventional mixed oxide techniques at sintering temperatures of 1220 degrees C-1300 degrees C for 2 h. The effect of sintering temperature on the microstructure and the piezoelectric properties was investigated by XRD, SEM, and other conventional measurement. The result indicated that with temperature increasing, the valence of Cr ion from Cr5+ or Cr6+ changes into C3+, and the piezoelectric properties turn hard. With increasing Cr2O3 content, the amount of rhombohedral phases increases and the morphotropic boundary phase is correspondingly shifts to rhombohedral phase. A uniform microstructure and excellent comprehensive properties were obtained at 1240 degrees C as the amount of Cr2O3 is 0.5 wt.%.展开更多
文摘利用传统固相烧结法制备了0.02Pb(Sb_(0.5)Nb_(0.5))O_3-0.98Pb_(1-2 x)Ba_xSr_x(Zr_(0.53)Ti_(0.47))O_3压电陶瓷(其中x=0.02,0.03,0.04,0.05).讨论了不同Ba、Sr复合掺杂量及烧结温度对陶瓷结构和电性能的影响.结果显示,当x=0.04,烧结温度为1 260℃时,压电陶瓷的性能最佳,其中d_(33)=615 p C/N,ε_(33)/ε_0=2 224,tanδ=2.11%;然后把这个配方的陶瓷片安装到传感器中,测试其电荷灵敏度、最大横向灵敏度比和最大线性误差,电荷灵敏度为2.72 p C/(m·s^(-2)),最大横向灵敏度比小于5%,最大线性误差为2.97%,符合通用振动测试类型传感器使用要求.
基金financial support of the International cooperation project of Guizhou Province[No.(2013)3075)]the Science and technology support project of Guizhou Province[No.(2012)7010]
文摘Lead zirconate titanate(PSN-PZT) is widely utilized in various areas based on its desirable piezoelectrical properties and stable performance.In order to further improve its electrical properties,the ceramic samples,which have been prepared by traditional solid-state sintering,then are re-heated by strong laser beam.Phase composition and micro-structure have been characterized through XRD,SEM and TEM.Also,Quasi-static d_(33) tester and the capacitance tester have been introduced for measuring electrical performances.The experimental results indicate that the ceramic samples are with more amount percentage tetragonal phase after laser re-heating.Cracks could be induced and initialized by higher input laser intensity.TEM results suggested that,when the input laser power is at 1000 W,tetragonal and rhombohedral phases are co-existed and the ceramic samples are with the best electrical properties.The ceramics heated by power of 1000 W present excellent electric properties,d_(33) increased 24.8%,and tanS decreased 9%,which is distinguish advance compared with original ceramics in solid reaction.
文摘PSN-PZN-PZT + x wt. %Cr2O3, X = 0.0-0-9, were prepared by conventional mixed oxide techniques at sintering temperatures of 1220 degrees C-1300 degrees C for 2 h. The effect of sintering temperature on the microstructure and the piezoelectric properties was investigated by XRD, SEM, and other conventional measurement. The result indicated that with temperature increasing, the valence of Cr ion from Cr5+ or Cr6+ changes into C3+, and the piezoelectric properties turn hard. With increasing Cr2O3 content, the amount of rhombohedral phases increases and the morphotropic boundary phase is correspondingly shifts to rhombohedral phase. A uniform microstructure and excellent comprehensive properties were obtained at 1240 degrees C as the amount of Cr2O3 is 0.5 wt.%.
