Effect of the Sintering Temperature on the Properties of 0.96(K0.5Na0.5)(Nb0.96Sb0.04)-0.04LiTaO3 Ceramics
Lead-free piezoelectric ceramics 0.96(K0.5Na0.5)(Nb0.96Sb0.04)-0.04LiTaO3 (96KNNS-4LT) have been prepared by using the conventional technique. The effect of the sintering temperature on the piezoelectric properties of 96KNNS-4LT ceramics was studied. The X-ray diffraction (XRD) and scanning electron microscope (SEM) show that all the ceramics possess a pure perovskite phase and dense microstructure. The ceramics sintered at 1090 ℃ show better piezoelectric properties: d33=315.5 pC/N, kp=0.455, and TC=348 ℃, the optimized sintering temperature range is very narrow for KNN-based ceramics, and the optimized sintering temperature range in which the d33 and kp are in the range of 0.9 times the maximum one is less than 20 ℃. From the results obtained it was pointed out that the sintering temperature is a very critical factor for the K0.5Na0.5NbO3-based lead-free piezoelectric ceramics.
piezoelectric ceramics Piezoelectric properties Ferroelectric properties (K0.5Na0.5 )NbO3
B. Zhang D.Q. Xiao W.J. Wu J. Li X.L. Huang Y. Pei L. Wu J.G. Zhu Z.J. He
Department of Materials Science,Sichuan University,Chengdu 610064,P.R.China Department of Materials Science,Sichuan University,Chengdu 610064,P.R.China School of Material Scien
国际会议
西安
英文
149-152
2009-08-23（万方平台首次上网日期，不代表论文的发表时间）