scholarly journals Electric degradation in PZT piezoelectric ceramics under a DC bias

2020 ◽  
Vol 27 (1) ◽  
pp. 464-468
Author(s):  
Jing Zhang ◽  
Pinghua Pan ◽  
Ping Jiang ◽  
Jie Qin ◽  
Jiansong Hu
Keyword(s):  
Electrical Properties ◽  
Service Life ◽  
Degradation Rate ◽  
Piezoelectric Ceramics ◽  
Degradation Process ◽  
Ion Transfer ◽  
Pzt Ceramics ◽  
Dc Voltage ◽  
Surrounding Environment ◽  
Dc Bias

AbstractIn order to accurately evaluate the service life and failure mechanism of the PZT piezoelectric ceramics, the electric degradation process of the PZT ceramics with and sans doping under a DC voltage of 380V, in a surrounding environment of 90∘C and 85% RH has been investigated using a self-made device. The experimental results show that the degradation rate of the pure PZT ceramic is lower than that of ceramics with doping in the same condition. Furthermore, the electrical properties of the ceramics tend to decrease during the electric degradation. The doping increases the defects of ceramics, resulting in that the silver ion transfer from the anode to the cathode under the continuous DC bias, which can further form a metal band, increasing the conductivity, but deteriorating the service life.

Microstructure, electrical properties of Bi2NiMnO6-doped 0.935(Bi1/2Na1/2) TiO3–0.065BaTiO3 lead-free piezoelectric ceramics

2015 ◽  
Vol 632 ◽  
pp. 580-584 ◽  
Author(s):  
Renfei Cheng ◽  
Zhijun Xu ◽  
Ruiqing Chu ◽  
Jigong Hao ◽  
Juan Du ◽  
...  
Keyword(s):  
Electrical Properties ◽  
Piezoelectric Ceramics ◽  
Lead Free

Composition design, phase transitions and electrical properties of Sr2+-substituted xPZN–0.1PNN–(0.9−x)PZT piezoelectric ceramics

2016 ◽  
Vol 42 (3) ◽  
pp. 4080-4089 ◽  
Author(s):  
Yu Zhang ◽  
Xiaohong Zhu ◽  
Jiliang Zhu ◽  
Xiangming Zeng ◽  
Xiaodong Feng ◽  
...  
Keyword(s):  
Phase Transitions ◽  
Electrical Properties ◽  
Piezoelectric Ceramics ◽  
Design Phase ◽  
Composition Design

Cu/W Co-doped CaBi2Nb2O9 Piezoelectric Ceramics on Structural and Electrical Properties

2021 ◽  
pp. 163078
Author(s):  
Hepeng Wang ◽  
Chao Chen ◽  
Xiangping Jiang ◽  
Xiaokun Huang ◽  
Xin Nie ◽  
...  
Keyword(s):  
Electrical Properties ◽  
Piezoelectric Ceramics ◽  
Structural And Electrical Properties ◽  
Co Doped

Relationship of Electrical Properties and Partical Size of Piezoelectric Ceramics Fabricated by Digital Light Processing 3D Printing

2021 ◽  
Author(s):  
Kai Liu ◽  
Jiaming Hu ◽  
Yusheng Shi ◽  
Chenyang Zhou ◽  
Yunfei Sun ◽  
...  
Keyword(s):  
Particle Size ◽  
Electrical Properties ◽  
3D Printing ◽  
Piezoelectric Sensor ◽  
Piezoelectric Ceramics ◽  
Particle Sizes ◽  
Digital Light Processing ◽  
Relationship Of ◽  
Partical Size ◽  
Functional Ceramics

Abstract To improve electrical properties of BaTiO3 piezoelectric ceramics fabricated by 3D printing, effects of particle sizes was investigated on rheological and curing properties of ceramic slurries, electrical properties of BaTiO3 fabricated by Digital Light Processing 3D printing method. It was found that the curing ability of ceramic slurries decreased first and then increased with the increase of particle size from 136 nm to 1486 nm, while the viscosity of the slurries kept decreasing. When the particle size in a range of submicron, the grain size of sintered ceramics decreased from 13.27 μm to 6.84 μm as particle size increasing. Immediately, the relative density, piezoelectric constant, relative permittivity and remanent polarization of sintered ceramics were measured and it turns out to reach 95.32%, 161.4 pC/N, 1512 and 7.59 uC/cm2 respectively while using the BaTiO3 powder with particle sizes of 993 nm. Finally, a cellular structural BaTiO3 ceramics was fabricated by using optimized powder and process parameters and packaged as a piezoelectric sensor, showing a good function of force-electricity conversion. These results demonstrated the feasibility of fabricating high-quality functional ceramics with designed geometry by Digital Light Processing.

Sintering and Electrical Properties of Lead-Free Na0.5K0.5NbO3 Piezoelectric Ceramics

2006 ◽  
Vol 89 (6) ◽  
pp. 2010-2015 ◽  
Author(s):  
Ruzhong Zuo ◽  
Jurgen Rodel ◽  
Renzheng Chen ◽  
Longtu Li
Keyword(s):  
Electrical Properties ◽  
Piezoelectric Ceramics ◽  
Lead Free

Electrical properties and temperature stability of a new kind of lead-free piezoelectric ceramics

2008 ◽  
Vol 41 (24) ◽  
pp. 245401 ◽  
Author(s):  
Yuanyu Wang ◽  
Jiagang Wu ◽  
Dingquan Xiao ◽  
Bin Zhang ◽  
Wenjuan Wu ◽  
...  
Keyword(s):  
Electrical Properties ◽  
Temperature Stability ◽  
Piezoelectric Ceramics ◽  
Lead Free

scholarly journals Corrugated Photoactive Thin Films for Flexible Strain Sensor

Materials ◽  
2018 ◽  
Vol 11 (10) ◽  
pp. 1970 ◽  
Author(s):  
Donghyeon Ryu ◽  
Alfred Mongare
Keyword(s):  
Thin Film ◽  
Thin Films ◽  
Electrical Properties ◽  
Tensile Strain ◽  
Strain Sensor ◽  
Strain Sensors ◽  
Optical And Electrical Properties ◽  
Strain Sensing ◽  
Dc Voltage ◽  
Flexible Strain Sensor

In this study, a flexible strain sensor is devised using corrugated bilayer thin films consisting of poly(3-hexylthiophene) (P3HT) and poly(3,4-ethylenedioxythiophene)-polystyrene(sulfonate) (PEDOT:PSS). In previous studies, the P3HT-based photoactive non-corrugated thin film was shown to generate direct current (DC) under broadband light, and the generated DC voltage varied with applied tensile strain. Yet, the mechanical resiliency and strain sensing range of the P3HT-based thin film strain sensor were limited due to brittle non-corrugated thin film constituents. To address this issue, it is aimed to design a mechanically resilient strain sensor using corrugated thin film constituents. Buckling is induced to form corrugation in the thin films by applying pre-strain to the substrate, where the thin films are deposited, and releasing the pre-strain afterwards. It is known that corrugated thin film constituents exhibit different optical and electronic properties from non-corrugated ones. Therefore, to design the flexible strain sensor, it was studied to understand how the applied pre-strain and thickness of the PEDOT:PSS conductive thin film affects the optical and electrical properties. In addition, strain effect was investigated on the optical and electrical properties of the corrugated thin film constituents. Finally, flexible strain sensors are fabricated by following the design guideline, which is suggested from the studies on the corrugated thin film constituents, and the DC voltage strain sensing capability of the flexible strain sensors was validated. As a result, the flexible strain sensor exhibited a tensile strain sensing range up to 5% at a frequency up to 15 Hz with a maximum gauge factor ~7.

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