Journal of Materials Science: Materials in Electronics ( IF 2.8 ) Pub Date : 2020-09-21 , DOI: 10.1007/s10854-020-04473-6 An Xue , Qibin Liu , Hongping Yang , Yuanyu Wang , Shiqiang Peng , Fanghui Mou
To upgrade integrated piezoelectric properties of lead-free ceramics, (Ba0.85Ca0.15)(Ti0.9Zr0.08Sn0.02)O3-SrTiO3 ceramics were successfully fabricated by the tape casting method and microwave sintering (MWS) techniques. The experimental results show that rhombohedral-orthorhombic-tetragonal(R-O-T) multiphases coexist in the samples, and excellent piezoelectric performance of the ceramics (d33 = 398 pC/N, Pr = 3.90 µC/cm2, Ec = 3.43 kV/cm, tanδ = 4.8%, εr = 7791, and Tc = 82 °C, respectively) is obtained under 1300 °C for 1 h. The template of ST, prepared through molten-salt two-step method, can guide the grains to grow in the < 001 > direction.
中文翻译:
通过微波烧结技术制备的(Ba 0.85 Ca 0.15)(Ti 0.9 Zr 0.08 Sn 0.02)O 3 -SrTiO 3压电陶瓷共存菱面-斜方-四方多相
为了提高无铅陶瓷的综合压电性能,通过流延铸造法和微波烧结(MWS)技术成功制备了(Ba 0.85 Ca 0.15)(Ti 0.9 Zr 0.08 Sn 0.02)O 3 -SrTiO 3陶瓷。实验结果表明,样品中共混有菱形-斜方-斜方-四方(ROT)多相,并且陶瓷具有出色的压电性能(d 33 = 398 pC / N,Pr = 3.90 µC / cm 2,Ec = 3.43 kV / cm,黄褐色δ = 4.8%,ε - [R = 7791,和 分别在1300°C和1 h下获得Tc = 82°C。通过熔融盐两步法制备的ST模板可以引导晶粒向<001>方向生长。