ABSTRACT In this study, in order to develop the composition ceramics for duplex ultrasonic sensor application, PMW-PNN-PZT system ceramics were prepared using CuO as sintering aids and their phase microstructure, piezoelectric and dielectric characteristics were minutely investigated with the amount of Bi substitution. The PMW-PNN-PZT ceramic specimens could be sintered at sintering temperature of 920°C by adding sintering aids CuO without secondary phase. At 0.5 mol% Bi substituted specimen, the density, electromechanical coupling factor(kp), dielectric constant, mechanical quality factor(Qm), piezoelectric constant(d33) and piezoelectric figure of merit (d33·g33) indicated optimal properties of 7.93 g/cm3, 0.676, 2265, 70, 611 pC/N, 18.64(pm2/N), respectively, for duplex ultrasonic sensor application.

中文翻译：

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CuO和Bi掺杂低温烧结PMW-PNN-PZT陶瓷的介电和压电性能双工超声传感器

摘要 在这项研究中，为了开发用于双超声传感器应用的复合陶瓷，使用 CuO 作为烧结助剂制备了 PMW-PNN-PZT 系统陶瓷，并详细研究了它们的相微观结构、压电和介电特性以及 Bi 取代量. PMW-PNN-PZT 陶瓷试样可以通过添加烧结助剂 CuO 在 920°C 的烧结温度下进行烧结，无二次相。在 0.5 mol% Bi 取代的样品中，密度、机电耦合因子 (kp)、介电常数、机械品质因子 (Qm)、压电常数 (d33) 和压电品质因数 (d33·g33) 表明最佳性能为 7.93 g/ cm3, 0.676, 2265, 70, 611 pC/N, 18.64(pm2/N)，分别用于双工超声波传感器应用。