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首页> 外文期刊>Japanese Journal of Applied Physics. Part 1, Regular Papers, Brief Communications & Review Papers >Fabrication and Electrical Properties of Potassium Niobate Ferroelectric Ceramics
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Fabrication and Electrical Properties of Potassium Niobate Ferroelectric Ceramics

机译：铌酸钾铁电陶瓷的制备及电性能

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摘要

Potassium niobate, KNbO_3 (KN), ceramics were prepared by a modified conventional ceramic fabrication process to characterize their piezoelectric properties. The modified process involving two-stage calcination (first stage at 600℃ and second stage at 1000℃) is very effective in obtaining KN ceramics with a high density ratio > 96% and a high resistivity, p, of > 10~(12) Ω· cm and that are nondeliquescent. The KN ceramics showed good piezoelectric properties in terms of the electromechanical coupling factor, k_(33), the piezoelectric constant, d_(33), and the mechanical quality factor, Q_m, which are 0.49, 91.7 pC/N, and 325, respectively. They were poled at a DC electric field of 5kV/mm at 150 ℃.
机译：铌酸钾KNbO_3（KN）陶瓷通过改进的常规陶瓷制造工艺制备，以表征其压电性能。改进的过程包括两步煅烧（第一阶段为600℃，第二阶段为1000℃），对于获得高密度比> 96％和高电阻率p> 10〜（12）的KN陶瓷非常有效。 Ω·cm且不潮解。 KN陶瓷的机电耦合系数k_（33），压电常数d_（33）和机械品质因数Q_m分别显示为0.49、91.7 pC / N和325，具有良好的压电性能。 。它们在150℃的5kV / mm直流电场下极化。

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