Relevant bibliographies by topics / Piezoelectric ceramics / Journal articles
To see the other types of publications on this topic, follow the link: Piezoelectric ceramics.

Journal articles on the topic 'Piezoelectric ceramics'

Author: Grafiati
Published: 4 June 2021
Last updated: 6 September 2023

Create a spot-on reference in APA, MLA, Chicago, Harvard, and other styles

Select a source type:

Consult the top 50 journal articles for your research on the topic 'Piezoelectric ceramics.'

Next to every source in the list of references, there is an 'Add to bibliography' button. Press on it, and we will generate automatically the bibliographic reference to the chosen work in the citation style you need: APA, MLA, Harvard, Chicago, Vancouver, etc.

You can also download the full text of the academic publication as pdf and read online its abstract whenever available in the metadata.

Browse journal articles on a wide variety of disciplines and organise your bibliography correctly.

1

Chen, Qian, Zhi Jun Xu, Rui Qing Chu, Yong Liu, Ming Li Chen, Xiu Hui Wang, Chun Jiao Ran, and Guo Rong Li. "Study on Dielectric and Ferroelectric Properties of Gd-Doped Sr2Bi4Ti5O18 Ceramics." Advanced Materials Research 328-330 (September 2011): 1131–34. http://dx.doi.org/10.4028/www.scientific.net/amr.328-330.1131.

Full text
Abstract:
Lead-free piezoelectric ceramics Sr2Bi4-xGdxTi5O18 were prepared by conventional solid-state reaction method. Pure bismuth layered structural ceramics with uniform gain size were obtained in all samples. The effect of Gd-doping on the dielectric, ferroelectric and piezoelectric properties of Sr2Bi4Ti5O18 ceramics were also investigated. It was found that that Gd3+ dopant gradually decreased the Curie temperature (Tc) with the lower dielectric loss (tand) of SBTi ceramics. In addition, Gd-doping with appropriate content improved the ferroelectric and piezoelectric properties of the SBTi ceramics. The piezoelectric constant (d33) of the Sr2Bi3.9Gd0.1Ti5O18 ceramic reached the maximum value, which is 22 pC/N. The results showed that the Sr2Bi4-xGdxTi5O18 ceramic was a promising lead-free piezoelectric material.
APA, Harvard, Vancouver, ISO, and other styles
2

Pang, Qianyi, Lanruo Han, and Xiang Yu. "Doping modification in lead-free piezoelectric ceramics." Highlights in Science, Engineering and Technology 55 (July 9, 2023): 166–75. http://dx.doi.org/10.54097/hset.v55i.9952.

Full text
Abstract:
Piezoelectric ceramics are functional information ceramic materials that can convert mechanical and electrical energy into each other. They are widely used in high-tech fields, such as the electronics industry, machinery, and aerospace. Currently, Pb(ZrTi)O3 (PZT) piezoelectric materials are most commonly used, but the main component, PbO, is toxic and volatile during production and manufacturing, thus causing certain damage to human health and the environment. Therefore, research on green and environmentally friendly lead-free piezoelectric materials has been attracting much attention. This paper will therefore present two lead-free piezoelectric ceramics that have the potential to replace PZT-based lead-containing piezoelectric materials: Potassium Sodium Niobate (KNN)-based piezoelectric ceramics and Bismuth Sodium Titanate (BNT)-based lead-free piezoelectric ceramics. The piezoelectric constants of lead-free piezoelectric ceramics represented by systems such as KNN and BNT are now comparable to those of lead-containing piezoelectric ceramics and are gradually replacing traditional lead-based piezoelectric ceramics in fields such as ultrasonic atomization and hydroacoustic energy transfer.
APA, Harvard, Vancouver, ISO, and other styles
3

Li, Quan Lu, Jing Wu, Yin Hong Zhang, Ran Liao, Hai Xia Cheng, and Qing Qing Yang. "The Effects of Superfine Powder and Sintering Technique upon Properties and Applications of some Piezoelectric Ceramics." Advanced Materials Research 749 (August 2013): 3–12. http://dx.doi.org/10.4028/www.scientific.net/amr.749.3.

Full text
Abstract:
This paper briefly reports on the improved properties and bettered applications of some piezoelectric ceramics (i. e. S-PZT, etc.) of ferro/piezoelectric community by means of bettering their technological process links, especial superfine grinding of powder of raw materials, and sintering technique of piezoelectric ceramics in them. These piezoelectric ceramic materials have obtained the better effect in their newly and widely applied aspects, such as, acoustoelectric transducing; electrical to mechanical to electrical transducing; acoustooptic effect; electrooptic technique, and, piezoelectric ceramics for high voltage generators, ignition and detonation purposes, and some original applications (e.g., combining the electrorheological fluids) etc.. As far as appropriate measure of the improving sintering and other technique processes in present work is concerned, they also have reference value to electronic ceramics of having similar manufacturing technological process, such as capacitor ceramics, resistance ceramics, magnetic ceramics, and oxide ceramic superconducting materials, etc..
APA, Harvard, Vancouver, ISO, and other styles
4

Feng, Yu Hua, Tie Zheng Pan, Xiang Qian Shen, Hao Jie Song, and Li Ping Guo. "Effects of Barium Substitution on the Structure and Properties of PSZT Piezoelectric Ceramics." Materials Science Forum 650 (May 2010): 103–8. http://dx.doi.org/10.4028/www.scientific.net/msf.650.103.

Full text
Abstract:
Piezoelectric ceramics with appropriate curie temperatures and high dielectric and piezoelectric performances are attractive for formations of ceramic/polymer piezoelectric composites. The PSZT ceramics with compositions of 0.98Pb1.0-xBaxTi0.48Zr0.52O3-0.02PbSbO3 (x=0.14~0.24) have been prepared by a conventional solid reaction process. The ceramic structures are analyzed by X-ray diffraction and the barium substitution leads to structural changes of the tetragonal and rhombohedral phases which constitute the perovskite PSZT ceramics, and lattice distortions. The curie temperature almost linearly decreases from 226 °C to 141 °C corresponding the barium content increases from 0.14 to 0.24 in the ceramics. The dielectric and piezoelectric properties are largely influenced by the barium substitution and when the barium content at vicinity of 0.22, the piezoelectric strain constant d33 exhibits a dramatic change. It is found that as the barium content around 0.22, the PSZT ceramic specimen is characterized with a low curie temperature Tc=156 °C, and satisfied dielectric and piezoelectric properties with the relative dielectric constant εr=5873, dielectric loss factor tanδ=0.0387, piezoelectric strain constant d33=578 pC/N.
APA, Harvard, Vancouver, ISO, and other styles
5

Gao, Xiaoyi, Nannan Dong, Fangquan Xia, Qinghu Guo, Hua Hao, Hanxing Liu, and Shujun Zhang. "Impact of Phase Structure on Piezoelectric Properties of Textured Lead-Free Ceramics." Crystals 10, no. 5 (May 3, 2020): 367. http://dx.doi.org/10.3390/cryst10050367.

Full text
Abstract:
The impact of phase structure on piezoelectric performances of <001> textured Na0.5Bi0.5TiO3 (NBT) based lead-free ceramics was studied, including 0.88NBT-0.08K0.5Bi0.5TiO3-0.04BaTiO3 (88NBT) with morphotropic phase boundary (MPB) composition and 0.90NBT-0.07K0.5Bi0.5TiO3-0.03BaTiO3 (90NBT) with rhombohedral phase. Both textured ceramics exhibit a high Lotgering factor, being on the order of f~96%. The piezoelectric coefficients of the textured 88NBT and 90NBT ceramics are increased by 20% and 60%, respectively, comparing to their randomly oriented ceramics. The piezoelectric enhancement of 90NBT textured ceramic is three times higher than 88NBT, revealing the phase structure plays a significant role in enhancing the piezoelectric performances of textured ceramics. Of particular significance is that the 90NBT textured ceramic exhibits almost hysteresis-free strain behavior. The enhanced piezoelectric property with minimal strain hysteresis is attributed to the <001> poled rhombohedral engineered domain configuration.
APA, Harvard, Vancouver, ISO, and other styles
6

Wu, Hong, and De Yi Zheng. "Preparation of PNN-PZT Ceramics and Piezoelectric Characteristics." Applied Mechanics and Materials 700 (December 2014): 132–35. http://dx.doi.org/10.4028/www.scientific.net/amm.700.132.

Full text
Abstract:
The experimental basis formula selected in this experiment is 0.1Pb (Ni1/3Nb2/3)O3-0.9Pb (Zr0.42Ti0.58)O3(PNN-PZT). The traditional solid phase synthesis are applied piezoelectric ceramic samples. The relationship between the microstructure and electrical properties of the ceramic samples are analyzed by means of XRD, SEM, impedance analyzer etc. The XRD patterns show that all the ceramics exhibited a tetragonal perovskite structure. Through the analysis of the ceramic samples of piezoelectric and dielectric properties, PNN-PZT piezoelectric ceramics will possess best comprehensive properties when sintering temperature at 1190°C.
APA, Harvard, Vancouver, ISO, and other styles
7

Deng, Yunfeng, Junjun Wang, Chunxiao Zhang, Hui Ma, Chungeng Bai, Danqing Liu, Fengmin Wu, and Bin Yang. "Structural and Electric Properties of MnO2-Doped KNN-LT Lead-Free Piezoelectric Ceramics." Crystals 10, no. 8 (August 15, 2020): 705. http://dx.doi.org/10.3390/cryst10080705.

Full text
Abstract:
Structural, ferroelectric, dielectric, and piezoelectric properties of K0.5Na0.5NbO3-LiTaO3-xmol%MnO2 lead-free piezoelectric ceramics with 0.0 ≤ x ≤ 0.3 were studied. The ceramic samples were synthesized through the conventional solid-state reaction method. The MnO2 addition can reduce the sintering temperature of KNLNT ceramics. Compared with undoped KNLNT ceramic, the piezoelectric measurements showed that piezoelectric properties of K0.5Na0.5NbO3-LiTaO3-xMnO2 were improved (d33 = 251 pC/N) when x = 0.1. In addition, KNLNT-xMnO2 ceramics have larger Pr(20.59~21.97 μC/cm2) and smaller Ec(10.77~6.95 kV/cm), which indicates MnO2 has excellent softening property, which improves the ferroelectric properties of KNLNT ceramics This work adds relevant information regarding of potassium sodium niobate K0.5Na0.5NbO3 (KNN) when doped Li, Ta, Mn at the B-site.
APA, Harvard, Vancouver, ISO, and other styles
8

Li, Yi Bo, Zhao Hui Liu, and Yan Mei Liu. "Model Identification and Controller Design for Piezoelectric Ceramic Actuator." Applied Mechanics and Materials 734 (February 2015): 264–67. http://dx.doi.org/10.4028/www.scientific.net/amm.734.264.

Full text
Abstract:
Piezoelectric ceramics are widely used in precision measurement and precision positioning, but its nonlinear characteristics seriously affected its application. Thus, firstly input voltage and output displacement data of piezoelectric ceramics are collected by the experiment, the nonlinear characteristics of piezoelectric ceramics is analyzed. Then a piezoelectric ceramic linear model is established using recursive least squares algorithm based on input and output signal. The identification results show that the algorithm is effective. Finally PID controller is designed and the controller has better control effect.
APA, Harvard, Vancouver, ISO, and other styles
9

Zhang, Chang Song, and Chen Jie Guo. "Analysis of PZT Piezoelectric Ceramics Based on Finite Element Softeware ADINA." Advanced Materials Research 284-286 (July 2011): 1456–59. http://dx.doi.org/10.4028/www.scientific.net/amr.284-286.1456.

Full text
Abstract:
Using traditional experiment means on piezoelectric ceramic device has certain limitations due to the complicated boundary conditions and stress situation. In this paper, the finite element model of piezoelectric ceramics in line with the experiment results was established according to piezoelectric structure field and the coupling of the electric field, deformation of representative PZT piezoelectric ceramics under the voltage was analysed in using finite element analysis software ADINA according to establishing geometric model, defining boundary conditions and materials, Coupling calculation. Consistency between simulation results and experimental results is improved and lay the foundation for the realization of the piezoelectric ceramic shapes and vibration control.
APA, Harvard, Vancouver, ISO, and other styles
10

Peng, Ling, Min Hong Jiang, Zheng Fei Gu, and Gang Cheng. "Effect of Sintering Temperature on the Structure and Piezoelectric Properties of Lead-Free 0.97K0.5Na0.5NbO3-0.03AlFeO3 Ceramics." Key Engineering Materials 602-603 (March 2014): 822–25. http://dx.doi.org/10.4028/www.scientific.net/kem.602-603.822.

Full text
Abstract:
Lead-free piezoelectric 0.97 K0.5Na0.5NbO3-0.03 AlFeO3(KNN-AF) ceramics were prepared at low temperature of 980 °C to 1020 °C by the conventional ceramic process. The effect of sintering temperature on the crystal structure, density and electrical properties of the ceramics was investigated. The results indicate that KNN-AF ceramics sintered at an low temperature of 1000 °C exhibit high electrical and piezoelectric properties, with piezoelectric constantd33=116ρC/N, and electromechanical coupling factorkp= 32.9%, polarization (Pr) wasPr=21.8 μC/cm2and curie temperatureTC=382°C. This also indicates that KNN-AF ceramics are promising candidate materials for lead-free piezoelectric applications.
APA, Harvard, Vancouver, ISO, and other styles
11

Fujii, Ichiro, Ryuta Mitsui, Kouichi Nakashima, and Satoshi Wada. "Enhanced piezoelectric properties of (Ba0.3Bi0.7)(Mg0.05Fe0.6Ti0.35)O3 piezoelectric ceramics with high Curie temperature." Journal of Advanced Dielectrics 04, no. 01 (January 2014): 1450005. http://dx.doi.org/10.1142/s2010135x14500052.

Full text
Abstract:
( Ba 0.3 Bi 0.7)( Mg 0.05 Fe 0.6 Ti 0.35) O 3 ceramics were either doped with vanadium or sintered in calcined powder with the same composition. Compared to an undoped ceramic sintered without the calcined powder, both ceramics showed reduced leakage current densities (lower than 1 × 10-7 A/cm2) and absence of dielectric relaxation behaviors observed in frequency- and temperature-dependent dielectric measurements. The Curie temperatures of both samples were higher than 460°C. The maximum field-induced strain over the applied field, S max /E max , of 366 pm/V of the undoped ceramic sintered without the calcined powder increased to 455 and 799 pm/V for the V-doped ceramics and the ceramics sintered with the calcined powder, respectively. The increase was related to a reduced concentration of bismuth vacancy–oxygen vacancy defect dipoles.
APA, Harvard, Vancouver, ISO, and other styles
12

WU, WENJUAN, DINGQUAN XIAO, JIAGANG WU, JING LI, and JIANGUO ZHU. "PHASE STRUCTURE, PIEZOELECTRIC AND MULTIFERRIOC BEHAVIOR OF (K0.48Na0.52)NbO3-Co2O3 PIEZOELECTRIC CERAMICS." Functional Materials Letters 04, no. 03 (September 2011): 225–29. http://dx.doi.org/10.1142/s1793604711002081.

Full text
Abstract:
( K 0.48 Na 0.52) NbO 3-x% Co 2 O 3 (x = 0, 0.03 and 0.05) (KNN-x% Co2O3 ) lead-free piezoelectric ceramics were prepared by the conventional solid-state sintering method. An orthorhombic phase was observed for all KNN-x% Co2O3 ceramics at room temperature, and two phase transitions were confirmed by the high temperature X-ray diffraction and the temperature dependence of the dielectric constant. The Co2O3 greatly improves the density and decreases the sintering temperature of KNN ceramics. The KNN-0.05 mol%Co2O3 ceramic exhibits good properties (d33 = 120 pC/N , k p = 0.41, Q m = 213 and T c = 407°C) and a good age stability. The multiferroic behavior was also observed at room temperature for the KNN-0.05 mol%Co2O3 ceramic, as confirmed by P–E loops and magnetic behavior.
APA, Harvard, Vancouver, ISO, and other styles
13

Xu, Peng, Min Hong Jiang, and Xin Yu Liu. "Effects of Low Concentration BiFeO3 Additions on Microstructure and Piezoelectric Properties of (K0.5Na0.5)NbO3 Ceramics." Advanced Materials Research 335-336 (September 2011): 968–75. http://dx.doi.org/10.4028/www.scientific.net/amr.335-336.968.

Full text
Abstract:
(1- x) K0.5Na0.5NbO3 – x BiFeO3 lead-free piezoelectric ceramics were prepared by the conventional ceramic processing. The compositional dependence of the phase structure and the electrical properties of the ceramics were studied. A morphotropic phase boundary (MPB) between the orthorhombic and tetragonal phases was identified in the composition range of x = 0.01. The ceramics exhibit a strong compositional dependence and enhanced piezoelectric properties. The ceramics with 0.6 mol.% BF exhibit good electrical properties (d33 ～146 pC/N, kp ～51%, Tc ～405°C, To-t ～185 °C, εr ～432, and tan θ～ 4.60 %. The related mechanism of the enhanced electrical properties of the ceramics was also discussed. These results show that the air-sintered (1−x) KNN− x BF (0.006 < x < 0.01) ceramic is a promising lead-free piezoelectric material.
APA, Harvard, Vancouver, ISO, and other styles
14

Ma, Wen Xin, Xing Hua Fu, Wen Hong Tao, Lei Yang, Guo Yuan Cheng, and Li Ping Zhao. "KNN-Sb Lead-Free Piezoelectric Ceramics Synthesized by Hydrothermal Method." Materials Science Forum 859 (May 2016): 3–7. http://dx.doi.org/10.4028/www.scientific.net/msf.859.3.

Full text
Abstract:
K1-xNaxNb1-ySbyO3 lead-free piezoelectric ceramic powders were prepared by hydrothermal route. The samples were sintered under normal pressure at 1060 °C for 2 h. The structure of piezoelectric ceramics is perovskite and crystalline grain shows a block shape. With the different ceramics component and microstructure, piezoelectric constant d33 varies from 20 to 73. When x=0.54, y=0.04, reached the maximum.
APA, Harvard, Vancouver, ISO, and other styles
15

Zhang, Hong Mei, Shao Bo Qu, Jing Bo Zhao, and Hong Liang Du. "Dielectric, Piezoelectric and Ferroelectric Properties of (1-x)K0.5Na0.5NbO3–xBiGaO3 Lead-Free Ceramics." Advanced Materials Research 634-638 (January 2013): 2345–48. http://dx.doi.org/10.4028/www.scientific.net/amr.634-638.2345.

Full text
Abstract:
(1-X)K0.5Na0.5NbO3–xBiGaO3[(1-X)KNN-Xbg] Lead-Free Ceramics with Different Additive of Bigao3 Were Synthesized by Conventional Solid-State Sintering Technique. Dielectric, Piezoelectric and Ferroelectric Properties of (1-X)KNN-Xbg Lead-Free Ceramics Were Studied. it Is Found that the Piezoelectric Properties Was Improved due to the Additive Bigao3，The Ceramics X=0.01 near Room Temperature Exhibit Excellent Electrical Properties D33=152pC/N, TC=372 °C. these Results Indicate that Bigao3 Adjusted K0.5Na0.5NbO3-Based Ceramics Materials Are Promising Lead-Free Piezoelectric Ceramic Candidates for Practical Applications.
APA, Harvard, Vancouver, ISO, and other styles
16

Ye, Zhe Yu, and Zhi Yong Wang. "Piezoelectrics-Based Integrated Optical Waveguide for Mach-Zehnder Interferometer as the Modulator in Microwave Photonic Link." Advanced Materials Research 421 (December 2011): 31–34. http://dx.doi.org/10.4028/www.scientific.net/amr.421.31.

Full text
Abstract:
Microwave photonic link (MPL), which processes microwave signal with photonic technologies, has offered many advantages such as increased channel capacity, immunity to RF disturbance, reduction of size and weight, and low loss. External modulation of the MPL applies Mach-Zehnder interferometer (MZI) for the modulating. The traditional phase transitional behavior of the EO device lacks the performances required for quick response, low half-wave voltage V and high loaded power, while maintaining low noise, high SNR, and large dynamic range operation. This paper proposed a method in which the piezoelectric ceramic-based integrated optical waveguide with 3dB loss at the highest power was applied to the MZI. We built the physical model for the phase transitional behavior based on the piezoelectrics, analyzed the piezoelectric properties of ceramics. The impacts of the piezoelectric ceramic on the property of MPL were discussed numerically.
APA, Harvard, Vancouver, ISO, and other styles
17

Schipf, David, Celeste A. Brown, Gregory Yesner, and Matthew D. Guild. "Binder jet printing lead-free piezoelectric ceramics with sintering aids." Journal of the Acoustical Society of America 152, no. 4 (October 2022): A92. http://dx.doi.org/10.1121/10.0015653.

Full text
Abstract:
In this study, we explore binder jet printing and sintering piezoelectric ceramic samples consisting of barium titanate (BaTiO3) and small amounts of sintering aids. Binder jet printing of piezoelectric ceramics shows promise for being a preferred additive manufacturing method for piezoelectric ceramics. Thus far binder jet printed piezoelectric ceramics have suffered from lower piezoelectric and dielectric properties than conventionally manufactured piezoelectric ceramics. This is mainly due to the high porosity of sintered binder jet printed samples. This investigation uses sintering aids that enable printed samples to sinter at lower temperatures and compact into higher densities than printed samples consisting of pure BaTiO3. In this presentation, we will discuss our selection of sintering aids, our investigation of sintering temperature profiles, and the properties of sintered samples. We will show a comparison of properties between our printed and sintered samples with BaTiO3 samples manufactured using uniaxial pressing. We will finish by discussing future steps in printing and sintering fully dense piezoelectric ceramics given the current state of this technology. [Work funded by the Office of Naval Research.]
APA, Harvard, Vancouver, ISO, and other styles
18

Li, Qing Ying, and Yong Jiu Zhu. "Analysis of the Application of Piezoelectric Ceramic Material in the De-Icing Technique of the Aircrafts." Key Engineering Materials 730 (February 2017): 580–86. http://dx.doi.org/10.4028/www.scientific.net/kem.730.580.

Full text
Abstract:
The application of piezoelectric ceramic material in de-icing technique of aircrafts is presented in numerical simulation and experiment methods. Firstly, the ice properties are introduced briefly as the evaluation of device design. Then, modal simulation of the testing skin of NACA 0030 is performed to determine the position where the piezoelectric ceramics fix. The resonance frequency as the driving frequency in the experiment is calculated in harmonic analysis with the actuators bonding on the testing skin model. Moreover, piezoelectric de-icing rig is fabricated as the modeling results. It is shown that the driving frequency agrees well with the calculated resonance frequency, and the ice can be removed when the driving frequency is 1530 Hz and the driving voltage is 650 V. In addition, design factors as material properties, size of the ceramics, and excitation voltage are discussed. From the numerical calculation, the stress will vary with different piezoelectric ceramic materials and sizes of the ceramics. It will decrease with the increase of thickness of the piezoelectric ceramics, but increase linearly with the increase of the voltage. Therefore it is considerable to choose design parameters for piezoelectric de-icing systems.
APA, Harvard, Vancouver, ISO, and other styles
19

Li, Chao, Jin-Su Baek, and Jung-Hyuk Koh. "Ce and Y Co-Doping Effects for (Ba0.85Ca0.15)(Zr0.1Ti0.9)O3 Lead-Free Ceramics." Coatings 11, no. 10 (October 14, 2021): 1248. http://dx.doi.org/10.3390/coatings11101248.

Full text
Abstract:
CeO2 and Y2O3 were co-doped to (Ba0.85Ca0.15)(Zr0.1Ti0.9)O3 ceramics and sintered by conventional solid-state reaction process to form x wt.% CeO2-y wt.% Y2O3 doped (Ba0.85Ca0.15)(Zr0.1Ti0.9)O3 (CexYy-BCZT) ceramics. The effects of different contents of CeO2-Y2O3 dopants to the (Ba0.85Ca0.15) (Zr0.1Ti0.9)O3 composition were analyzed by studying the phase, surface microstructure, piezoelectric and ferroelectric properties of BCZT ceramics. In this study, we have shown that co-doping a small amount of CeO2 and Y2O3 will not change the phase structure of (Ba0.85Ca0.15)(Zr0.1Ti0.9)O3 ceramics. However, the proper introduction of CeO2 and Y2O3 can improve the piezoelectric constant and electromechanical coupling coefficient of BCZT ceramic samples. Moreover, these dopants can promote the grain growth process in (Ba0.85Ca0.15) (Zr0.1Ti0.9)O3 ceramics. C0.04Y0.02 doped (Ba0.85Ca0.15)(Zr0.1Ti0.9)O3 ceramic has the best piezoelectric properties compared with other composition, the results are as follows: Relative density = 96.9%, Kp = 0.583, and d33 = 678 pC/N, V = 8.9 V. It means that this Ce0.04Y0.02 doped (Ba0.85Ca0.15)(Zr0.1Ti0.9)O3 ceramic is a desired material in the application of lead-free ceramics.
APA, Harvard, Vancouver, ISO, and other styles
20

Thomann, Helmut. "Piezoelectric Ceramics." Advanced Materials 2, no. 10 (October 1990): 458–63. http://dx.doi.org/10.1002/adma.19900021004.

Full text
APA, Harvard, Vancouver, ISO, and other styles
21

Duran, P., and C. Moure. "Piezoelectric ceramics." Materials Chemistry and Physics 15, no. 3-4 (September 1986): 193–211. http://dx.doi.org/10.1016/0254-0584(86)90001-5.

Full text
APA, Harvard, Vancouver, ISO, and other styles
22

Chen, Zhi Wu, and Zhen Ya Lu. "Piezoelectric and Dielectric Properties of (Bi0.5Na0.5)TiO3- (Bi0.5K0.5)TiO3-BaTiO3 Lead-Free Piezoelectric Ceramics." Key Engineering Materials 336-338 (April 2007): 54–57. http://dx.doi.org/10.4028/www.scientific.net/kem.336-338.54.

Full text
Abstract:
A lead-free piezoelectric ceramic ternary system based on (Bi0.5Na0.5)TiO3 (BNT)-(Bi0.5 K0.5)TiO3(BKT)-BaTiO3(BT) near the morphotropic phase boundary (MPB) between the tetragonal and rhombohedral phases has been investigated. The samples were prepared by a conventional sintering technique. Piezoelectric properties, dielectric properties and microstructures of BNT-BKT-BT lead-free piezoelectric ceramic were studied. The X-ray diffraction (XRD) patterns show that the ceramics possess a single-phase perovskite structure. The measurements of piezoelectric properties reveal that this system has a relatively high piezoelectric performance: the piezoelectric constant d33 reached to 178pC/N and planar electromechanical coupling factor kp enhanced to 0.325. The BNT-BKT-BT ternary system ceramics could be well sintered at 11500C with a high-density ratio of more than 95% of the theoretical density.
APA, Harvard, Vancouver, ISO, and other styles
23

CHEN, QIAN, ZHIJUN XU, RUIQING CHU, and YONG LIU. "DIELECTRIC AND FERROELECTRIC PROPERTIES OF (Li, Ce)-DOPED Sr2Bi4Ti5O18 LEAD-FREE CERAMICS." Journal of Advanced Dielectrics 01, no. 04 (October 2011): 439–45. http://dx.doi.org/10.1142/s2010135x11000586.

Full text
Abstract:
The influence of (Li, Ce) doping on the electrical properties of bismuth layer Sr 2-x (Li, Ce) x/2 Bi4Ti5O18 [abbreviated to SBTi-(Li, Ce) X/2] ceramics was investigated. X-ray diffraction analysis showed that all the ceramic samples were single-phase compounds. The (Li, Ce) modification significantly decreased the dielectric loss of Sr2Bi4Ti5O18 ceramics and greatly improved the piezoelectric activity. At x/2 = 0.0125, the SBTi-(Li, Ce) x/2 ceramics exhibited the excellent properties with high remnant polarization (P r = 9.3 μC/cm2) and high Curie temperature (T c = 299°C). Meanwhile, the SBTi-(Li, Ce)0.0125 ceramics had the largest piezoelectric constant (d33 = 26 pC/N). The results showed that the SBTi-(Li, Ce) x/2 ceramic was a promising lead-free piezoelectric material.
APA, Harvard, Vancouver, ISO, and other styles
24

Zhang, Zhong Hua, Guang Ming Cheng, Jun Wu Kan, Ping Zeng, and Jian Ming Wen. "The Influence of Multiple Piezoelectric Effects on Elastic Coefficient of Piezoelectric Ceramics." Advanced Materials Research 305 (July 2011): 348–52. http://dx.doi.org/10.4028/www.scientific.net/amr.305.348.

Full text
Abstract:
The development of new materials and the performance improvement of existing materials become an important subject from different aspects. In this paper, based on the theoretical research results of multiple piezoelectric effects, the influence of multiple piezoelectric effects on elastic coefficient of piezoelectric ceramics is studied. Theoretical analysis indicates that it is multiple piezoelectric effects that make piezoelectrics have two kinds of elastic and they result in the decrease of elastic compliance coefficients. Experimental validation is performed through PZT-5. Experimental results show that elastic compliance coefficient grows decreased by 0.912 times.
APA, Harvard, Vancouver, ISO, and other styles
25

Guo, Chen Jie, and Chang Song Zhang. "Research on Properties of PZT Piezoelectric Ceramics by Finite Element Softeware ADINA." Applied Mechanics and Materials 130-134 (October 2011): 3233–36. http://dx.doi.org/10.4028/www.scientific.net/amm.130-134.3233.

Full text
Abstract:
In this paper, the finite element model of piezoelectric ceramics in line with the experiment results was established according to piezoelectric structure field and the coupling of the electric field, deformation of representative PZT piezoelectric ceramics under the voltage was analysed in using finite element analysis software ADINA according to establishing geometric model, defining boundary conditions and materials, Coupling calculation. Consistency between simulation results and experimental results is improved and lay the foundation for the realization of the piezoelectric ceramic shapes and vibration control.
APA, Harvard, Vancouver, ISO, and other styles
26

Gio, Phan Dinh, Huynh Thi Chi, Le Tran Uyen Tu, and Nguyen Truong Tho. "STRUCTURE, MICROSTRUCTURE, AND PIEZOELECTRIC PROPERTIES OF KNLNS-BNKZ LEAD-FREE CERAMICS UNDER THE EFFECT OF DIFFERENT SINTERING TEMPERATURES." Dalat University Journal of Science 11, no. 4 (July 22, 2021): 25. http://dx.doi.org/10.37569/dalatuniversity.11.4.862(2021).

Full text
Abstract:
Samples of 0.96(K0.48Na0.48Li0.04)(Nb0.95Sb0.05)O3-0.04Bi0.5(Na0.82K0.18)0.5ZrO3 piezoelectric ceramic were fabricated with conventional ceramic techniques and sintered at different temperatures. The effect of sintering temperature (TS) on the structure, microstructure, and piezoelectric properties of the ceramics was studied in detail. The experimental results showed that with an increase of the TS temperature, the structure of the ceramics transformed from an orthorhombic-tetragonal mixed phase (O-T) at TS £ 1100 °C into a rhombohedral-tetragonal (R-T) mixed phase with a dense microstructure of uniform grain size at TS = 1110 °C. When TS was further increased (TS ³ 1120 °C), the ceramics showed only a rhombohedral phase (R). The ceramics showed the best electrical properties for TS = 1110 °C at which the rhombohedral and tetragonal (R-T) phases coexist. Specifically, the ceramic density reached its highest value (4.22 g/cm3), the electromechanical coupling coefficients kp and kt were 0.46 and 0.50, respectively, and the piezoelectric coefficient d33 was 245 pC/N.
APA, Harvard, Vancouver, ISO, and other styles
27

Wodecka-Duś, Beata, Lucjan Kozielski, Jolanta Makowska, Mateusz Bara, and Małgorzata Adamczyk-Habrajska. "Fe-Doped Barium Lanthanum Titanate as a Competitor to Other Lead-Free Piezoelectric Ceramics." Materials 15, no. 3 (January 30, 2022): 1089. http://dx.doi.org/10.3390/ma15031089.

Full text
Abstract:
Multiferroic solid solutions of Ba1−xLaxTi1−x/4O3 and iron (BLFT) were synthesized using the conventional mixed oxide method. The dependence of the piezoelectric coefficients on Fe content in BLFT ceramics was determined by the quasi-static and resonance method. The results indicate that 0.3 mol% addition of Fe3+ ions to the ceramic structure increased the value of the piezoelectric parameter d33 to the maximum of 159 pC/N. This puts BLFT ceramics among other good-quality and lead-free piezoelectric ceramics. A major enhancement of dielectric properties related to the manipulation of Fe content in the barium lanthanum titanate (BLT) ceramics system is reported as well.
APA, Harvard, Vancouver, ISO, and other styles
28

Liao, Wei-Qiang, Dewei Zhao, Yuan-Yuan Tang, Yi Zhang, Peng-Fei Li, Ping-Ping Shi, Xiao-Gang Chen, Yu-Meng You, and Ren-Gen Xiong. "A molecular perovskite solid solution with piezoelectricity stronger than lead zirconate titanate." Science 363, no. 6432 (March 14, 2019): 1206–10. http://dx.doi.org/10.1126/science.aav3057.

Full text
Abstract:
Piezoelectric materials produce electricity when strained, making them ideal for different types of sensing applications. The most effective piezoelectric materials are ceramic solid solutions in which the piezoelectric effect is optimized at what are termed morphotropic phase boundaries (MPBs). Ceramics are not ideal for a variety of applications owing to some of their mechanical properties. We synthesized piezoelectric materials from a molecular perovskite (TMFM)x(TMCM)1–xCdCl3 solid solution (TMFM, trimethylfluoromethyl ammonium; TMCM, trimethylchloromethyl ammonium, 0 ≤ x ≤ 1), in which the MPB exists between monoclinic and hexagonal phases. We found a composition for which the piezoelectric coefficient d33 is ~1540 picocoulombs per newton, comparable to high-performance piezoelectric ceramics. The material has potential applications for wearable piezoelectric devices.
APA, Harvard, Vancouver, ISO, and other styles
29

Higuchi, Yukio, Hirozumi Ogawa, Daisuke Kuroda, Masahiko Kimura, Hiroshi Takagi, and Yukio Sakabe. "Piezoelectric Ceramics for High Temperature Applications." Key Engineering Materials 421-422 (December 2009): 375–80. http://dx.doi.org/10.4028/www.scientific.net/kem.421-422.375.

Full text
Abstract:
Ceramic materials based on lead titanate, lead niobate and bismuth layer-structured ferroelectrics (BLSF) were studied to develop piezoelectric ceramics for high temperature sensor applications. Compositional modification enabled lead titanate and lead niobate type ceramics to exhibit good piezoelectric properties at 500°C . The Curie temperature for one BLSF, CaBi4Ti4O15 was close to 800°C, though the piezoelectric constant was smaller than those of lead titanate and lead niobate ceramics. These ceramics seem to be good candidates for use as high temperature sensor materials. In addition, textured SrBi2Nb2O9 (SBN), another BLSF, ceramics with various orientation factors were fabricated through the templated grain growth (TGG) method. The resonant frequency of 76% textured SBN varied linearly with temperature and exhibited stable temperature characteristics. The temperature coefficient of the resonant frequency was –0.85 ppm/°C from –50 to 250°C, and was smaller than that of a quartz oscillator. Therefore, textured SBN ceramics are suitable for use as a resonator material when stable resonant frequency is needed in a high temperature range.
APA, Harvard, Vancouver, ISO, and other styles
30

Ogawa, Toshio. "How Can Be Realized High Piezoelectricity from Measuring Acoustic Wave Velocities ?" Advances in Science and Technology 90 (October 2014): 33–42. http://dx.doi.org/10.4028/www.scientific.net/ast.90.33.

Full text
Abstract:
Material research and development on piezoelectric ceramics, especially lead-free ceramics, was proposed from a viewpoint of relationships between piezoelectricity and elastic constants such as Young’s modulus and Poisson’s ratio. We developed a method to be convenient to measure acoustic wave velocities by an ultrasonic thickness gauge with high-frequency. From the change in longitudinal and transvers wave velocities before and after DC poling, it was found that the ceramic bulk density was important to improve the piezoelectricity in lead-free ceramics. As a result, the candidates of lead-free ceramic compositions with higher piezoelectricity were proposed. Furthermore, the ratio of transvers wave velocity to longitudinal wave velocity was clarified to estimate compositions with higher piezoelectricity. The measurement of sound velocities was an effective method for researching and developing piezoelectric materials, and it was possible to design the material compositions of lead-free piezoelectric ceramics as well as lead-containing ceramics by the novel measuring method.
APA, Harvard, Vancouver, ISO, and other styles
31

Chen, Yi, Jian Guo Zhu, and Ding Quan Xiao. "Electrical Properties of Bi(In,Ga,Sc)O3-PbTiO3 Piezoelectric Ceramics." Applied Mechanics and Materials 364 (August 2013): 794–98. http://dx.doi.org/10.4028/www.scientific.net/amm.364.794.

Full text
Abstract:
The gallium and indium double-modified bismuth scandate-lead titanate (1-x)Bi (In0.20Ga0.05Sc0.75)O3-xPbTiO3((1-x)BIGS-xPT,x=0.55-0.70) ceramics were prepared by using conventional ceramic technique. (1-x)BIGS-xPT ceramics for nearx=0.60 exhibits an evident enhancement in room temperature dielectric and piezoelectric properties, with dielectric constantε, piezoelectric constantd33, planar electromechanical coupling coefficientkpand Curie temperatureTCof 1100, 295 pC/N, 0.43 and 435 °C, respectively. TheTCof (1-x)BIGS-xPT is in the range of 425-530 °C for the compositions investigated. The combination of highTCand excellent piezoelectric activity suggest that the (1-x)BIGS-xPT ceramics are usable candidate materials for high temperature piezoelectric devices applications.
APA, Harvard, Vancouver, ISO, and other styles
32

Wang, Chun Huy. "Effect of Bi2O3 Addition on the Microstructure and Electrical Properties of Lead-Free (Na0.5K0.5)NbO3-Ba(Sn0.02Ti0.98)O3 Ceramics." Applied Mechanics and Materials 284-287 (January 2013): 3–7. http://dx.doi.org/10.4028/www.scientific.net/amm.284-287.3.

Full text
Abstract:
PbZrO3-PbTiO3 (PZT)-based ceramics are playing a dominant role in piezoelectric materials, their evaporation of harmful lead oxide during the sintering process causes a crucial environment problem. It is necessary to search for lead-free piezoelectric materials that have such excellent properties as those found in the PZT-based ceramics. Therefore (Na0.5K0.5)NbO3-based solid solutions were studied to improve piezoelectric properties. In the present study, various quantities of Bi2O3 were added into 0.98(Na0.5K0.5)NbO3-0.02Ba(Sn0.02Ti0.98)O3 (0.98NKN-0.02BST) ceramics. It was found that 0.98NKN-0.02BST with the addition of 0~4.0 wt.% Bi2O3 exhibit relatively good piezoelectric properties. For 0.98NKN-0.02BST ceramic with the addition of 1.0 wt.% Bi2O3, the electromechanical coupling coefficients of the planar mode kp and the thickness mode kt reach 0.21 and 0.46, respectively, at the sintering of 1100oC for 3 h. The ratio of thickness coupling coefficient to planar coupling coefficient is 2.2. It is obvious that 0.98NKN-0.02BST solid solution ceramic by adding low quantities of Bi2O3 is one of the promising lead-free ceramics for high frequency electromechanical transducer applications.
APA, Harvard, Vancouver, ISO, and other styles
33

Nan, Ce-Wen, and David R. Clarke. "Piezoelectric Moduli of Piezoelectric Ceramics." Journal of the American Ceramic Society 79, no. 10 (August 9, 2005): 2563–66. http://dx.doi.org/10.1111/j.1151-2916.1996.tb09016.x.

Full text
APA, Harvard, Vancouver, ISO, and other styles
34

Ma, Hong Yun, Yan Gai Liu, Jin Qiu Zhao, Zhao Hui Huang, and Ming Hao Fang. "The Preparation and Properties of (Na0.5+xK0.5-2xLix)NbO3 Lead-Free Piezoelectric Ceramics." Key Engineering Materials 602-603 (March 2014): 826–29. http://dx.doi.org/10.4028/www.scientific.net/kem.602-603.826.

Full text
Abstract:
In this paper, the KNN powders with Li+ substituted (K0.5Na0.5)+ were prepared by the sol-gel method in order to make powders pure, (Na0.50+xK0.50-2xLix) -NbO3 (x=0, 0.04, 0.06, 0.08) ceramics were prepared by pressureless sintering. The phase composition of powders was determined by XRD. The effects of the Li+ substitution on piezoelectric and ferroelectric properties of ceramics were systematically studied for determining optimal Li+ content. Li+ can significantly increase the piezoelectric constant of ceramic. When Li+ content was 0.04, piezoelectric properties of ceramics were the best, d33=115 pC/N, Pr=6.35 μC/cm2, Ec=14.24 kV/cm.
APA, Harvard, Vancouver, ISO, and other styles
35

Yoo, Ju-Hyun, and Yeong-Ho Jeong. "Microstructure and Piezoelectric Properties of 0.97(Na, K, Li)(Nb, Sb, Ta)O3-0.03(Bi, Na, Sr)ZrO3 Ceramics Doped with Boron Oxide for Piezoelectric Actuator." Journal of Nanoscience and Nanotechnology 21, no. 3 (March 1, 2021): 2059–62. http://dx.doi.org/10.1166/jnn.2021.18898.

Full text
Abstract:
In this study, with the motivation of developing low temperature sintered Pb-free ceramics for use in piezoelectric actuators, 0.97(Na0.52K0.443Li0.037)(Nb0.923Sb0.04Ta0.037)O3 − 0.03 (Bi0.5Na0.5)0.9 (Sr)0.1ZrO3 ceramics were manufactured and their piezoelectric properties analyzed. All specimens doped with boron oxide showed a typical pure perovskite structure. The ceramics with x = 0.1 composition showed a co-existence of R-T phases. When boron oxide is doped at 0.1 wt%, excellent physical properties of d33 = 270 pC/N εr = 1386, kp = 0.416, and Qm = 130 were obtained making the ceramic ideal for use in piezoelectric actuators.
APA, Harvard, Vancouver, ISO, and other styles
36

Tao, Hong, and Jiagang Wu. "New poling method for piezoelectric ceramics." Journal of Materials Chemistry C 5, no. 7 (2017): 1601–6. http://dx.doi.org/10.1039/c6tc05328a.

Full text
Abstract:
We reported a new poling method for poling a ferroelectric ceramic, where alternating current (AC) fields were used. Piezoelectric activity of the ceramics poled under AC can almost match the values obtained under DC.
APA, Harvard, Vancouver, ISO, and other styles
37

Lin, Zirui, Zhe Zhu, Zhonghua Yao, Hao Zhang, Hua Hao, Minghe Cao, and Hanxing Liu. "Piezoelectric Response and Cycling Fatigue Resistance of Low-Temperature Sintered PZT-Based Ceramics." Materials 16, no. 4 (February 17, 2023): 1679. http://dx.doi.org/10.3390/ma16041679.

Full text
Abstract:
The preparation of low-cost multilayer piezoelectric devices requires using cheap internal electrodes between the dielectric layers. A general strategy is to reduce the sintering temperature Ts of the ceramic layer by sintering aids which can form a liquid phase. Here, 0.2 wt% Li2CO3 was added as a sintering aid to tailor the sinterability and piezoelectricity of the commercial PZT ceramics. As verified from experiments, the piezoelectric ceramics could be densified at a sintering temperature above 940 °C, suitable for co-firing with the cheap internal electrode. The optimized sintering temperature of 980 °C can be confirmed for the 0.2 wt% Li2CO3-modified PZT ceramics due to its high piezoelectric coefficient d33 ~ 701 pC/N, planar coupling factor kp ~ 66.7%, and a low mechanical quality factor Qm ~ 71 with a transition temperature of Tc ~ 226 °C, presenting the characteristics of typical soft piezoelectric ceramics. Moreover, both the potential piezoelectric strain ~0.13% under 20 kV/cm and the good cycling fatigue characteristic (>104 cycles) of the studied piezo compositions indicates strong competitiveness in the field of multilayer piezoelectric devices.
APA, Harvard, Vancouver, ISO, and other styles
38

Chen, Jianguo, Jingen Wu, Yun Lu, Yan Wang, and Jinrong Cheng. "High temperature piezoelectric accelerometer fabricated by 0.75BiFeO3–0.25BaTiO3 ceramics with operating temperature over 450 °C." Applied Physics Letters 121, no. 23 (December 5, 2022): 232902. http://dx.doi.org/10.1063/5.0131097.

Full text
Abstract:
Owing to the high Curie temperature and good piezoelectric thermal stability, BiFeO3–BaTiO3 ceramics show great potentials for high-temperature piezoelectric sensor applications. In this paper, a compression-mode piezoelectric sensor was fabricated by the lead-free and high-temperature 0.75BiFeO3–0.25BaTiO3–MnO2 (BFBT25–Mn) ceramic and its sensitivity was characterized from room temperature to 550 °C over a frequency range of 200–1000 Hz. The output charge of the BFBT25–Mn piezoelectric sensor is independent of the measuring frequency at different temperatures. The maximum working temperature of the BFBT25–Mn piezoelectric sensor is 450 °C, about 250, 150, and 100 °C higher than those of these piezoelectric sensors fabricated by PZT-5A, BSPT64–Mn, and BSPT66–Mn ceramics, respectively. The temperature sensitivity coefficient from room temperature to 350 °C of the BFBT25–Mn piezoelectric sensor is 30% of that for the BSPT66–Mn sensor. Furthermore, the sensitivity of the BFBT25–Mn piezoelectric sensor is stable with the dwelling time at 400 °C. These results indicate that the BFBT25–Mn ceramic is a strong competitor for high temperature sensing applications.
APA, Harvard, Vancouver, ISO, and other styles
39

Yang, Shuai, Fenghua Tian, Chunchun Li, Mingwen Wang, Jinjing Zhang, Qingshan Zhu, Jie Wu, Jinglei Li, Xiangyu Gao, and Fei Li. "Electromechanical properties of textured PIN-PSN-PT ceramics under uniaxial stress, hydrostatic pressure, and bias electric field." Journal of Applied Physics 133, no. 9 (March 7, 2023): 094104. http://dx.doi.org/10.1063/5.0142958.

Full text
Abstract:
Textured relaxor-PbTiO3 ceramics have received considerable attention from both academia and industry, due to their crystal-like properties, high composition homogeneity easy-to-process, and relatively low cost compared to their crystal counterparts. In this work, the [Formula: see text]-oriented Pb(In1/2Nb1/2)O3-Pb(Sc1/2Nb1/2)O3-PbTiO3 textured ceramics were fabricated by the template grain growth method. To explore the property variation in these textured ceramics under practical applications of piezoelectric devices, their electromechanical properties were characterized and analyzed under uniaxial stress, hydrostatic pressure, and d.c. bias electric field. The results show that the dielectric constants of all textured ceramics increase with an increase in the uniaxial prestress and hydrostatic pressure but decrease with an increase in the d.c. bias electric field. Among all textured ceramics, the textured ceramic with 3 vol. % BT templates exhibits the best stability under external fields. In particular, the electromechanical coupling factors of the textured ceramic change less than 2% with the hydrostatic pressure increase to 100 MPa. This work provides important data on textured relaxor ferroelectric ceramics, which will benefit the design and application of piezoelectric devices based on textured piezoelectric ceramics.
APA, Harvard, Vancouver, ISO, and other styles
40

Tang, Yan, Lingyan Wang, Wei Ren, Yi Quan, Jinyan Zhao, Zhe Wang, Kun Zheng, Jian Zhuang, and Gang Niu. "Effect of Sintering Conditions on the Electrical Properties of Lead-Free Piezoelectric Potassium Sodium Niobate-Based Ceramics." Crystals 12, no. 12 (December 8, 2022): 1784. http://dx.doi.org/10.3390/cryst12121784.

Full text
Abstract:
Lead-free piezoelectric 0.92(K0.445Na0.5Li0.05)NbO3-0.08BaZrO3 (KNLN-BZ) ceramics were prepared via conventional sintering. Single-step, 2-step and 3-step temperature-controlled conditions were designed. The structure and electrical properties of ceramics obtained using different temperature-controlled procedures were systematically studied. It was found that ceramic prepared using the 3-step method with a holding time of 20 h showed the highest electrical properties. The Curie temperature was approximately 286 °C, and the dielectric constant and dielectric loss at room temperature were 1350 and 4.5% at the frequency of 1 kHz, respectively. The highest remanent polarization, piezoelectric strain and piezoelectric coefficient, d33*, were obtained 60 °C, indicating a phase transition between ferroelectric phases. Although the ceramics did not show excellent piezoelectric properties, the 3-step sintering method can be considered an effective method to optimize the electrical performances of KNN-based ceramics. Combined with an appropriate composition, ceramics with excellent electrical properties could be obtained. This study provides a path to enhance the density and electrical properties for KNN-based ceramics with simple composition and potential for industry application.
APA, Harvard, Vancouver, ISO, and other styles
41

Shin, Dong-Jin, Woo-Seok Kang, Dong-Hwan Lim, Bo-Kun Koo, Min-Soo Kim, Soon-Jong Jeong, and In-Sung Kim. "Lead-Free AE Sensor Based on BZT–BCT Ceramics." Sensors 21, no. 21 (October 26, 2021): 7100. http://dx.doi.org/10.3390/s21217100.

Full text
Abstract:
In this study, an acoustic emission (AE) sensor was fabricated using lead-free Ba(Zr0.2Ti0.8)O3–0.5(Ba0.7Ca0.3)TiO3 (BZT–BCT) ceramics. The acoustic and electromechanical properties of the AE sensor were determined by the shapes of the piezoelectric ceramics. To optimize the AE sensor performance, the shapes of the ceramics were designed according to various diameter/thickness ratios (D/T) = 0.5, 1.0, 1.5, 2.0, 2.5, 3.0. The BZT–BCT ceramic with D/T = 1.0 exhibited excellent values of a piezoelectric charge coefficient (d33), piezoelectric voltage coefficient (g33), and electromechanical coupling factor (kp), which were 370 (pC/N), 11.3 (10−3 Vm/N), and 0.58, respectively. Optimum values of resonant frequency (fr) = 172.724 (kHz), anti-resonant frequency (fa) = 196.067 (kHz), and effective electromechanical coupling factor (keff) = 0.473 were obtained for the manufactured BZT–BCT ceramic with D/T = 1.0. The maximum sensitivity and frequency of the AE sensor made of the BZT–BCT ceramic with a D/T ratio of 1.0 were 65 dB and 30 kHz, respectively.
APA, Harvard, Vancouver, ISO, and other styles
42

Baxter, F. R., I. G. Turner, Chris R. Bowen, J. P. Gittings, J. B. Chaudhuri, and R. W. C. Lewis. "The Structure and Properties of Electroceramics for Bone Graft Substitution." Key Engineering Materials 361-363 (November 2007): 99–102. http://dx.doi.org/10.4028/www.scientific.net/kem.361-363.99.

Full text
Abstract:
Hydroxyapatite (HA) and barium titanate (BT) powders were mixed and sintered to form hydroxyapatite – barium titanate (HABT) ceramics. These materials were then poled and their piezoelectric properties were measured. The microstructure of unpoled samples was examined using scanning electron microscopy (SEM).The piezoelectric constants (d33 and d31) of the ceramics were found to be dependent on the proportion of BT in the ceramic In materials containing less than 70% BT, no piezoelectric effect was found. Above this value, the piezoelectric constant increased with the addition of BT up to a value of 108pCN-1 for pure BT. Values of d33 for ceramics containing more than 80% BT are above values previously shown to have a positive influence on bone growth in vivo. SEM analysis indicated that the grain size within the materials decreased as the proportion of BT in the material was reduced. Examination of the microstructure of the ceramics indicated the presence of electrical domains in the 100% BT and 95% BT ceramics. Domains were not visible below 95% BT. The reduction in grain size may influence the reduction in piezoelectric activity within the materials but cannot be considered to be the only cause.
APA, Harvard, Vancouver, ISO, and other styles
43

Huang, Jie, Li Ping Shi, Hai Min Zhou, Xi Wen Wei, and Yan Bo Wei. "Applied Research on Self-Sensing Micro-Flow Injection Device Based on Piezoelectric Ceramics." Key Engineering Materials 645-646 (May 2015): 746–55. http://dx.doi.org/10.4028/www.scientific.net/kem.645-646.746.

Full text
Abstract:
Experimental research of first inverse, secondary positive piezoelectric effects are performed through the PZT-5 piezoelectric ceramics. Introduce a concept of self-sensing micro-flow injection device based on piezoelectric ceramics. Utilized the characteristic of the first inverse piezoelectric effect which can generate micro-displacement, micro-position and then micro-injection can be realized by the micro-change of piezoelectric ceramic’s volume. Self-sensing displacement in micro-injection process can be obtained by utilizing the secondary direct piezoelectric effect. The experimental data: if the external voltages which were applied to the stack are 20V and 40V, the theoretical displacement generated by the first inverse piezoelectric effect are 4μm and 8μm respectively, the actual measured values are 3.57μm and 8.12μm respectively, self-sensing displacement of secondary direct piezoelectric effect are 1.48μm and 2.53μm respectively. It proves that the theoretical and experimental device could sense the displacement of micro-injection and the integration of sensor and actuator can be achieved.
APA, Harvard, Vancouver, ISO, and other styles
44

Yang, Hailu, Yue Yang, Yue Hou, Yue Liu, Pengfei Liu, Linbing Wang, and Yuedong Ma. "Investigation of the Temperature Compensation of Piezoelectric Weigh-In-Motion Sensors Using a Machine Learning Approach." Sensors 22, no. 6 (March 20, 2022): 2396. http://dx.doi.org/10.3390/s22062396.

Full text
Abstract:
Piezoelectric ceramics have good electromechanical coupling characteristics and a high sensitivity to load. One typical engineering application of piezoelectric ceramic is its use as a signal source for Weigh-In-Motion (WIM) systems in road traffic monitoring. However, piezoelectric ceramics are also sensitive to temperature, which affects their measurement accuracy. In this study, a new piezoelectric ceramic WIM sensor was developed. The output signals of sensors under different loads and temperatures were obtained. The results were corrected using polynomial regression and a Genetic Algorithm Back Propagation (GA-BP) neural network algorithm, respectively. The results show that the GA-BP neural network algorithm had a better effect on sensor temperature compensation. Before and after GA-BP compensation, the maximum relative error decreased from about 30% to less than 4%. The sensitivity coefficient of the sensor reduced from 1.0192 × 10−2/°C to 1.896 × 10−4/°C. The results show that the GA-BP algorithm greatly reduced the influence of temperature on the piezoelectric ceramic sensor and improved its temperature stability and accuracy, which helped improve the efficiency of clean-energy harvesting and conversion.
APA, Harvard, Vancouver, ISO, and other styles
45

Han, Hyeonsu, and Junghyuk Ko. "Power-Generation Optimization Based on Piezoelectric Ceramic Deformation for Energy Harvesting Application with Renewable Energy." Energies 14, no. 8 (April 13, 2021): 2171. http://dx.doi.org/10.3390/en14082171.

Full text
Abstract:
Along with the increase in renewable energy, research on energy harvesting combined with piezoelectric energy is being conducted. However, it is difficult to predict the power generation of combined harvesting because there is no data on the power generation by a single piezoelectric material. Before predicting the corresponding power generation and efficiency, it is necessary to quantify the power generation by a single piezoelectric material alone. In this study, the generated power is measured based on three parameters (size of the piezoelectric ceramic, depth of compression, and speed of compression) that contribute to the deformation of a single PZT (Lead zirconate titanate)-based piezoelectric element. The generated power was analyzed by comparing with the corresponding parameters. The analysis results are as follows: (i) considering the difference between the size of the piezoelectric ceramic and the generated power, 20 mm was the most efficient piezoelectric ceramic size, (ii) considering the case of piezoelectric ceramics sized 14 mm, the generated power continued to increase with the increase in the compression depth of the piezoelectric ceramic, and (iii) For piezoelectric ceramics of all diameters, the longer the depth of deformation, the shorter the frequency, and depending on the depth of deformation, there is a specific frequency at which the charging power is maximum. Based on the findings of this study, PZT-based elements can be applied to cases that receive indirect force, including vibration energy and wave energy. In addition, the power generation of a PZT-based element can be predicted, and efficient conditions can be set for maximum power generation.
APA, Harvard, Vancouver, ISO, and other styles
46

Han, Ruilin, Tingting Gao, Yining Xie, Lixu Xie, Yuan Cheng, Xu Li, Hao Chen, Jie Xing, and Jianguo Zhu. "The Effect of Nb2O5 Precursor on KNN-Based Ceramics’ Piezoelectricity and Strain Temperature Stability." Crystals 12, no. 12 (December 7, 2022): 1778. http://dx.doi.org/10.3390/cryst12121778.

Full text
Abstract:
The performance of potassium sodium niobate ((K, Na) NbO3, KNN)-based lead-free piezoelectric ceramics has significantly improved over the past decade. However, the performance bottlenecks of KNN-based ceramics cannot be ignored. Here, the Nb2O5 precursor is obtained after thermal pretreatment, which can evidently improve the piezoelectric properties and strain temperature stability of KNN-based ceramics. With the help of the Nb2O5 precursor treated at 800 °C, the optimal piezoelectric constant d33 of 303 pC/N, inverse piezoelectric constant d*33 of 378 pm/V, Curie temperature TC of 310 °C and electromechanical coupling factor kp of 42% are obtained, and the value of d33 improves by about 30% compared with that of the ceramic prepared with untreated Nb2O5 as raw material. Additionally, in comparison with the strain temperature stability of the ceramics prepared with untreated Nb2O5 as raw material, the temperature stability is enhanced. Therefore, this study provides a useful approach to break the existing performance bottleneck and further improve the properties of KNN-based ceramics.
APA, Harvard, Vancouver, ISO, and other styles
47

Matsuda, Shuto, Tadashi Fujii, Naoya Nakada, Tomoaki Karaki, and Tatsunori Kakuda. "Fabrication of Three-Dimensional Piezoelectric Ceramics Using the Dispenser System." Journal of Microelectronics and Electronic Packaging 16, no. 3 (July 1, 2019): 136–40. http://dx.doi.org/10.4071/imaps.945561.

Full text
Abstract:
Abstract We fabricated lead-free (K,Na,Li)NbO3 (KNLN) and BaTiO3 (BT) piezoelectric ceramics using a dispenser system. After dissolving polyvinyl butyral in ethanol, a paste for extrusion was fabricated by mixing KNLN or BT ceramic powders. After several times of paste extrusion with a dispenser system, degreasing was performed at 650°C. The KNLN moldings were sintered, at 1,100–1,170°C, and sintering of BT moldings were performed by two-step sintering at 1,320°C and 1,150°C. From the x-ray diffraction pattern, the fabricated KNLN ceramics had a perovskite structure. The density of the KNLN and BT moldings fabricated by the dispenser system was 3.94 and 5.42 g/cm3, respectively. In addition, the BT moldings had the dielectric constant εr = 1.95 × 103. The Curie temperature of the BT moldings was confirmed at about 125°C, as with the BT piezoelectric ceramics fabricated by uniaxial pressure molding. The BT moldings had the piezoelectric constant d33 = 60 pC/N. The fabrication methods studied in this work provided the potential to fabricate simple three-dimensional piezoelectric ceramic devices for applications in acoustic wave sensors.
APA, Harvard, Vancouver, ISO, and other styles
48

Zhao, Yong Jie, Yu Zhen Zhao, Rong Xia Huang, Rong Zheng Liu, and He Ping Zhou. "(1-x)(K0.475Na0.475Li0.05)(Nb0.975Sb0.025)O3-xBiFeO3 Lead-Free Piezoelectric Ceramics with CuO Sintering Aid." Materials Science Forum 687 (June 2011): 228–32. http://dx.doi.org/10.4028/www.scientific.net/msf.687.228.

Full text
Abstract:
(1-x) (K0.475Na0.475Li0.05)(Nb0.975Sb0.025)O3-xmolBiFeO3 (x=0, 0.002, 0.004, 0.006, 0.008) doped with 0.8mol%CuO lead-free piezoelectric ceramics were prepared by the solid state reaction technique. X-ray diffraction patterns suggested that all the ceramics presented perovskite structure. The compositional dependence of the phase structure and the electrical properties of the ceramics were studied. The ceramic (x=0.002) near room temperature exhibited excellent electrical properties (piezoelectric constant d33=172pC/N, planar electromechanical coupling factor kp=0.43, and dielectric constant =418). A relatively high mechanical quality factor (Qm=200) was also obtained in this particular composition. All these results revealed that this system might become a promising candidate for lead-free piezoelectric materials.
APA, Harvard, Vancouver, ISO, and other styles
49

Yang, Shuai, Liao Qiao, Jing Wang, Mingwen Wang, Xiangyu Gao, Jie Wu, Jinglei Li, Zhuo Xu, and Fei Li. "Full matrix electromechanical properties of textured Pb(In1/2Nb1/2)O3-Pb(Sc1/2Nb1/2)O3-PbTiO3 ceramic." Journal of Applied Physics 131, no. 12 (March 28, 2022): 124104. http://dx.doi.org/10.1063/5.0085274.

Full text
Abstract:
Textured relaxor-PbTiO3 (PT) ceramics possess advantages of crystal-like properties, high composition homogeneity, and low cost, and have, thus, received considerable attention from the piezoelectric community. To promote the applications of textured relaxor-PT ceramics, here we characterize the full electromechanical parameters (elastic, dielectric, and piezoelectric coefficients) and the frequency dependence of the coercive field ( EC) for the recently reported textured Pb(In1/2Nb1/2)O3-Pb(Sc1/2Nb1/2)O3-PbTiO3 (PIN-PSN-PT) ceramic. Our results show that the textured PIN-PSN-PT ceramic possesses high piezoelectric coefficients ( d31 = −365 pC N−1, d33 = 770 pC N−1, and g33 = 40.4 × 10−3 m2 C−1) and electromechanical coupling factors ( k33 = 87% and kp = 82%), far outperforming those of the commercial ceramic PZT-5H ( d31 = −274 pC N−1, d33 = 593 pC N−1, g33 = 1.97 × 10−2 m2 C−1, k33 = 75%, and kp = 65%). In addition, the textured PIN-PSN-PT ceramic exhibits lower dielectric constants ( ɛ33S = 478) compared with PZT-5H and relaxor-PT crystals, which can greatly promote the sensitivity of receiving transducers. Moreover, the textured PIN-PSN-PT ceramic with a high Tr−t (172 °C) shows better thermal stability compared to commercial relaxor-PT crystals ( Tr−t < 130 °C). The results presented here will benefit the development of piezoelectric devices made of textured ceramics.
APA, Harvard, Vancouver, ISO, and other styles
50

Maeder, Marlyse Demartin, Dragan Damjanovic, Cyril Voisard, and Nava Setter. "Piezoelectric Properties of SrBi4Ti4O15 Ferroelectric Ceramics." Journal of Materials Research 17, no. 6 (June 2002): 1376–84. http://dx.doi.org/10.1557/jmr.2002.0205.

Full text
Abstract:
The dynamic piezoelectric response of SrBi4Ti4O15 ceramics with Aurivillius structure was investigated at high alternating stress, low frequencies (0.01 to 100 Hz), and temperatures from 20 to 200 °C. The piezoelectric nonlinearity, observed only at high pressures (>10 MPa) and elevated temperatures (>150 °C), is interpreted in terms of contributions from non-180° domain walls. At weak fields, the frequency dependence of the longitudinal piezoelectric coefficient was explained in terms of Maxwell–Wagner piezoelectric relaxation. The Maxwell–Wagner units are identified as colonies that consist of highly anisotropic grains which sinter together, and whose distribution in the ceramic is strongly dependent on sintering conditions.
APA, Harvard, Vancouver, ISO, and other styles
You might also be interested in the bibliographies on the topic 'Piezoelectric ceramics' for other source types:
Dissertations / Theses Books
We offer discounts on all premium plans for authors whose works are included in thematic literature selections. Contact us to get a unique promo code!

To the bibliography