Improvement of (K,Na)NbO3-based lead-free piezoelectric ceramics by asymmetric octahedra

2016 ◽  
Vol 4 (41) ◽  
pp. 9756-9761 ◽  
Author(s):  
Hisashi Kozuka ◽  
Hideto Yamada ◽  
Takayuki Matsuoka ◽  
Kazuaki Kitamura ◽  
Masato Yamazaki ◽  
...  
Keyword(s):  
Piezoelectric Ceramic ◽  
Piezoelectric Properties ◽  
Piezoelectric Ceramics ◽  
Lead Free

Due to their excellent piezoelectric properties, including a kp = 0.55, εT33/ε0 = 2725, d33 = 375 pC N−1, 0.891 KNaCLN–0.041NTK–0.055BZ–0.0016Co3O4–0.0025Fe2O3–0.0069ZnO ceramic without Ta, Sb, Bi, or Hf is promising as a lead-free piezoelectric ceramic.

Influence of sintering temperature on piezoelectric properties of (K0.5Na0.5)NbO3–LiNbO3 lead-free piezoelectric ceramics

2007 ◽  
Vol 42 (9) ◽  
pp. 1594-1601 ◽  
Author(s):  
Hongliang Du ◽  
Fusheng Tang ◽  
Fa Luo ◽  
Dongmei Zhu ◽  
Shaobo Qu ◽  
...  
Keyword(s):  
Piezoelectric Properties ◽  
Sintering Temperature ◽  
Piezoelectric Ceramics ◽  
Lead Free

Dielectric and Piezoelectric Properties of Lead Free (1-x-y)Na1/2Bi1/2TiO3-xBaTiO3-yBiFeO3 Piezoelectric Ceramics

2011 ◽  
Vol 492 ◽  
pp. 194-197 ◽  
Author(s):  
Yue Fang Wang ◽  
Xiu Jie Yi ◽  
Wei Pan ◽  
Guo Zhong Zang ◽  
Juan Du
Keyword(s):  
Electrical Properties ◽  
Dielectric Loss ◽  
Phase Structure ◽  
Perovskite Structure ◽  
Piezoelectric Properties ◽  
Piezoelectric Ceramics ◽  
Lead Free ◽  
Compositional Dependence ◽  
Pure Perovskite Structure ◽  
Dielectric And Piezoelectric Properties

Lead-free (1-x-y)Na1/2Bi1/2TiO3-xBaTiO3-yBiFeO3 ceramics were synthesized by ordinary sintering technique. The compositional dependence of phase structure and electrical properties of the ceramics was systematically investigated. All samples possessed pure perovskite structure. The dielectric and piezoelectric properties of ceramics were investigated with the amount of different BiFeO3 substitutions. The addition of BiFeO3 can not only decrease Ec and Pr but also lead to a significant degradation of the dielectric loss tanδ.

Influence of the powder grain size on dielectric and piezoelectric properties of lead-free KxNa1-xNbO3 piezoelectric ceramics

2019 ◽  
Vol 539 (1) ◽  
pp. 89-92
Author(s):  
S. Grigorevich Ponomarev ◽  
V. Pavlovich Tarasovskii ◽  
A. Vladimirovich Reznichenko ◽  
A. Aleksandrovich Vasin
Keyword(s):  
Grain Size ◽  
Piezoelectric Properties ◽  
Piezoelectric Ceramics ◽  
Lead Free ◽  
Dielectric And Piezoelectric Properties

Degradation of Lead Zirconate Titanate Piezoelectric Ceramics Induced by Water and AC Voltages

2007 ◽  
Vol 336-338 ◽  
pp. 367-370 ◽  
Author(s):  
Wang Xiang ◽  
Wan Ping Chen ◽  
Wen Chao You ◽  
Helen Lai Wah Chan ◽  
Long Tu Li
Keyword(s):  
Lead Zirconate Titanate ◽  
Atomic Hydrogen ◽  
Piezoelectric Ceramic ◽  
Counter Electrode ◽  
Piezoelectric Properties ◽  
Piezoelectric Ceramics ◽  
Lead Zirconate ◽  
Zirconate Titanate ◽  
Comparison Experiment ◽  
Naoh Solution

A comparison experiment was conducted in which some lead zirconate titanate (PZT) piezoelectric ceramic rings were simply immersed in a 0.01 M NaOH solution while other PZT rings were immersed in the solution with a 50 Hz AC voltage applied between the electrodes of the rings and a counter electrode in the solution. Though the simple immersion showed no noticeable influence on the PZT rings, those PZT rings treated with the application of the AC voltage were obviously degraded in their piezoelectric properties. It was proposed that the degradation resulted from the collaborated reactions of atomic hydrogen and oxygen generated in the AC voltage-induced electrolysis of water. Water may be an important origin for degradation of piezoelectric ceramic devices operating under AC voltages.

Phase structure and piezoelectric properties of Li-modified NKLN lead-free piezoelectric ceramics

2012 ◽  
Vol 61 (6) ◽  
pp. 891-894
Author(s):  
Sin-Woong Kim ◽  
Sung-Chan Lee ◽  
Min-Soo Kim ◽  
Soon-Jong Jeong ◽  
In-Sung Kim ◽  
...  
Keyword(s):  
Phase Structure ◽  
Piezoelectric Properties ◽  
Piezoelectric Ceramics ◽  
Lead Free

Structure and electrical properties of (0.965 − x)(K0.48Na0.52)NbO3–xBiGaO3–0.035(Bi0.5Na0.5)ZrO3 piezoelectric ceramics

RSC Advances ◽  
2016 ◽  
Vol 6 (62) ◽  
pp. 57210-57216 ◽  
Author(s):  
Jie Xing ◽  
Zhi Tan ◽  
Jing Yuan ◽  
Laiming Jiang ◽  
Qiang Chen ◽  
...  
Keyword(s):  
Electrical Properties ◽  
Piezoelectric Properties ◽  
Temperature Stability ◽  
Piezoelectric Ceramics ◽  
Lead Free

(0.965 − x)(K0.48Na0.52)NbO3–xBiGaO3–0.035(Bi0.5Na0.5)ZrO3 [(0.965 − x)KNN–xBG–BNZ] lead-free piezoelectric ceramics were prepared using normal sintering for improving the piezoelectric properties and temperature stability of KNN-based ceramics.

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