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Phase transition and temperature stability of KNN-based lead-free piezoceramics
Ferroelectrics ( IF 0.6 ) Pub Date : 2021-01-11
Yang Zhang, Honglin Li, Mingling Li, Xiaoyong Xu

Abstract

Three step sintering method has been introduced in KNN-based lead free piezoceramics. The phase structure of the ceramics transform from rhombohedral phase to the coexistence of rhombohedral phase and tetragonal phase, and phase transition temperature shifts to −10 °C by three step sintering. Excellent piezoelectric properties have been obtained, d33 = 405pC/N at room temperature, the d33 values are above the 300pC/N from room temperature to around 200 °C.



中文翻译:

KNN基无铅压电陶瓷的相变和温度稳定性

摘要

在基于KNN的无铅压电陶瓷中引入了三步烧结方法。陶瓷的相结构从菱面体相转变为菱面体相和四方相共存,并且通过三步烧结使相变温度转变为-10°C。获得了优异的压电性能,室温下d 33 = 405pC / N,从室温到200°C左右,d 33值均高于300pC / N。

更新日期:2021-01-12
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