Multi-phase structure and electrical properties of Bi0.5Li0.5ZrO3 doping K0.48Na0.56NbO3 lead-free piezoelectric ceramics

作者：Peng, Xiaoyan; Zhang, Boping^*; Zhu, Lifeng; Zhao, Lei; Ma, Ruixiao; Liu, Bo; Wang, Xiaodong

来源：Journal of Advanced Ceramics, 2018, 7(1): 79-87.

DOI：10.1007/s40145-018-0259-3

• lead-free piezoelectric ceramics
• potassium-sodium niobate (KNN)
• solid-state sintering
• multi-phase
• electrical properties

(1-x)K0.48Na0.56NbO3-xBi(0.5)Li(0.5)ZrO(3) (KNN-xBLZ, x = 0-0.06) lead-free piezoelectric ceramics were prepared by the conventional solid-state sintering method, and their phase structures and electric properties as well as T-C were systematically investigated. The orthorhombic-tetragonal (O-T) two phases were detected in all (1-x)K0.48Na0.56NbO3-xBi(0.5)Li(0.5)ZrO(3) ceramics at 0.01 <= x <= 0.05. Due to the appropriate ratio between O phase and T phase (C-O/C-T= 45/55), high piezoelectric properties of d (33) = 239 pC/N, k(p) = 34%, and P-r = 25.23 mu C/cm(2) were obtained at x = 0.04. Moreover, a high T-C = 348 degrees C was also achieved in KNN-xBLZ ceramic at x = 0.04. These results indicate that (1-x)K0.48Na0.56NbO3-xBi(0.5)Li(0.5)ZrO(3) system is a promising candidate for high-temperature piezoelectric devices.

• 出版日期2018-3
• 单位钢铁研究总院; 北京科技大学; 河北大学