Kaya Mustafa Yunus, Mensur-Alkoy Ebru, Gurbuz Aysel, Oner Mehmet, Alkoy Sedat
IEEE Trans Ultrason Ferroelectr Freq Control. 2018 Jul;65(7):1268-1277. doi: 10.1109/TUFFC.2018.2829800.
The ternary system of x[Pb(ZnNbO. ( )[Pb(ZrTi)O] composition with " " varying from 0.1 to 0.6 with interval of 0.1 and " " varying from 0.46 to 0.52 with interval of 0.01 was studied. The main objective was to maximize the dielectric and electromechanical properties through compositional variation and then to establish the full property matrix of the optimized composition for further analysis and device applications. Ceramics with pure perovskite phase have been produced in the entire compositional range that was investigated. The highest ferroelectric and electromechanical properties were obtained at the 0.4[Pb(ZnNb)O-0.6[Pb(ZrTi)O]-(0.4 PZN-0.6 PZT) composition with remanent polarization ( ) of /cm, piezoelectric charge coefficient (d) of 465 pC/N, and electromechanical coupling coefficients ( , , and ) of 0.67, 0.52, and 0.77, respectively. Full property matrix for 0.4 PZN-0.6 PZT was obtained and was used as input in the finite-elements analysis of ceramics in disc and hemispherical shell form. Hollow spherical omnidirectional transducers were fabricated from the lead zinc niobate-lead zirconate titanate (PZN-PZT) ceramics as a device prototype, and underwater characteristics have been determined and reported for these transducers.
研究了x[Pb(ZnNbO₃)]-[Pb(ZrTi)O₃]三元体系，其中“x”从0.1变化到0.6，间隔为0.1，“y”从0.46变化到0.52，间隔为0.01。主要目的是通过成分变化使介电和机电性能最大化，然后建立优化成分的完整性能矩阵，用于进一步分析和器件应用。在整个研究的成分范围内都制备出了具有纯钙钛矿相的陶瓷。在0.4[Pb(ZnNb)O₃]-0.6[Pb(ZrTi)O₃]-(0.4 PZN-0.6 PZT)成分下获得了最高的铁电和机电性能，剩余极化强度(Pr)为23 μC/cm²，压电电荷系数(d)为465 pC/N，机电耦合系数(kp、kt和ke)分别为0.67、0.52和0.77。获得了0.4 PZN-0.6 PZT的完整性能矩阵，并将其用作圆盘和半球形壳形式陶瓷有限元分析的输入。由铌酸铅锌-钛酸铅锆(PZN-PZT)陶瓷制作了空心球形全向换能器作为器件原型，并测定和报道了这些换能器的水下特性。
