Coexistence of excellent piezoelectric performance and thermal stability in KNN-based lead-free piezoelectric ceramics

2020 ◽  
Vol 46 (2) ◽  
pp. 1390-1395 ◽  
Author(s):  
Weiwei Yang ◽  
Peng Li ◽  
Shuanghao Wu ◽  
Feng Li ◽  
Bo Shen ◽  
...  
Keyword(s):  
Thermal Stability ◽  
Piezoelectric Ceramics ◽  
Lead Free ◽  
Piezoelectric Performance

scholarly journals Boosted piezoelectricity with excellent thermal stability in tetragonal NaNbO3-based ceramics

2020 ◽  
Author(s):  
Lu Wang ◽  
Shengdong Sun ◽  
Huajie Luo ◽  
Yang Ren ◽  
Hui Liu ◽  
...  
Keyword(s):  
Thermal Stability ◽  
Temperature Stability ◽  
Lead Free ◽  
Excellent Thermal Stability ◽  
Lead Free Ceramics ◽  
Piezoelectric Performance

The realization of high piezoelectric performance and excellent temperature stability simultaneously in lead-free ceramics is the key for replacing Pb-containing perovskites in industry. In this study, large piezoelectric performance (d33...

scholarly journals Enhanced Electrical Properties of Lead-Free Piezoelectric KNLN-BZ-BNT Ceramics With the Modification of Sm3+ Ions

2021 ◽  
Vol 8 ◽  
Author(s):  
Yi Quan ◽  
Lingyan Wang ◽  
Wei Ren ◽  
Jinyan Zhao ◽  
Jian Zhuang ◽  
...  
Keyword(s):  
Thermal Stability ◽  
High Temperature ◽  
Electrical Properties ◽  
Piezoelectric Properties ◽  
Piezoelectric Ceramics ◽  
High Thermal Stability ◽  
Lead Free ◽  
Environment Friendly ◽  
Good Thermal Stability ◽  
Good For

Environment-friendly lead-free piezoelectric ceramics with great properties and high thermal stability are desired in the industry. In this work, the Sm3+-modified lead-free 0.915(K0.45Na0.5Li0.05)NbO3–0.075BaZrO3–0.01(Bi0.5Na0.5)TiO3 (KNLN-BZ-BNT) ceramics are prepared. The piezoelectric properties are improved with the introduction of Sm3+, and the optimal properties (d33 = 325 pC/N and d33* = 384 pm/V) are achieved in the ceramic modified with 0.3 mol% Sm3+ ions. Meanwhile, this sample shows good thermal stability such that the values of d33* decreased less than 20% when the temperature raised from 30 to 180oC. These results show the Sm3+-modified KNLN-BZ-BNT ceramics are good for further applications even under high temperature.

Thermal stability and enhanced electrical properties of Er3+-modified Na0.5Bi4.5Ti4O15 lead-free piezoelectric ceramics

RSC Advances ◽  
2016 ◽  
Vol 6 (97) ◽  
pp. 94870-94875 ◽  
Author(s):  
Zhongran Yao ◽  
Ruiqing Chu ◽  
Zhijun Xu ◽  
Jigong Hao ◽  
Wei Li ◽  
...  
Keyword(s):  
Thermal Stability ◽  
Electrical Resistivity ◽  
Solid State ◽  
Electrical Properties ◽  
Solid State Reaction ◽  
Piezoelectric Ceramics ◽  
Lead Free ◽  
Reaction Route ◽  
High Electrical Resistivity ◽  
Solid State Reaction Route

Na0.5Bi4.5−xErxTi4O15 (NBET-x, x = 0, 0.006, 0.012, 0.018, 0.025) lead-free piezoelectric ceramics, with high electrical resistivity were prepared by a solid-state reaction route.

A study of lead-free (K0.5N0.5)NbO3 piezoelectric ceramics processed by additive manufacturing

2021 ◽  
pp. 2050011
Author(s):  
Lei Zhang ◽  
Teng Wang ◽  
Jinxing Sun ◽  
Xiaoteng Chen ◽  
Xing Hong ◽  
...  
Keyword(s):  
Sintering Temperature ◽  
Three Dimensional ◽  
Piezoelectric Ceramics ◽  
Lead Free ◽  
Measured Temperature ◽  
Environment Friendly ◽  
3D Printed ◽  
Further Development ◽  
Successive Phase ◽  
Piezoelectric Performance

Lead-free (K[Formula: see text]N[Formula: see text]NbO3 piezoelectric ceramics have drawn wide attention due to its environment-friendly and excellent piezoelectric performance. Since the difficulty of post-processing of ceramics limit its further development and practical application, three-dimensional (3D) printing technology has been developed in this work. A homogeneous piezoelectric ceramic suspension with 40 vol% modified (K[Formula: see text]N[Formula: see text]NbO3 nanoparticles can be 3D printed well based on a stereolithography process. In addition, by the post heat treatment under different sintering temperature, a density value of 4.31[Formula: see text]g[Formula: see text]cm[Formula: see text] with the relative density of about 96% was obtained in the sample sintered at 1120[Formula: see text]C, which results in the larger dielectric constant and lower dielectric loss in this sample. These printed ceramics exhibit two successive phase transitions and reduce with increase of sintering temperature at measured temperature range.

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