Influence of Base Thickness on Performance of 1-3-2 Piezoelectric Composite

2010 ◽  
Vol 123-125 ◽  
pp. 121-124 ◽  
Author(s):  
Xin Cheng ◽  
Shuang Shuang Liao ◽  
Shi Feng Huang ◽  
Li Li Guo
Keyword(s):  
Coupling Coefficient ◽  
Acoustic Impedance ◽  
Electromechanical Coupling ◽  
Mechanical Quality Factor ◽  
Piezoelectric Composite ◽  
Electromechanical Coupling Coefficient ◽  
Electromechanical Properties ◽  
Base Thickness ◽  
Mechanical Quality ◽  
Titanate Ceramic

Sulphoaluminate cement and Lead Niobium-Magnesium Zirconate Titanate ceramic [P(MN)]ZT were used as matrix and functional phase respectively to fabricate 1-3-2 cement-based piezoelectric composites by dice and filling technique. The influences of base thickness on piezoelectric properties, electromechanical properties and acoustic impedance properties of the composites were discussed. The results show that as the base thickness increases, the piezoelectric stain factor d33 increases gradually, while the piezoelectric voltage factor g33 decreases. The planar electromechanical coupling coefficient Kp exhibits the trend of decrease, while the thickness electromechanical coupling coefficient Kt and acoustic impedance show the increasing trend. The mechanical quality factor Qm reaches the minimum (1.49) when base thickness is 2.00 mm. The results reveal that the 1-3-2 piezoelectric composite will be suitable for application by changing the base thickness.

Influence of Base Thickness on Properties of 1-3-2 Connectivity Cement Based Piezoelectric Composite

2011 ◽  
Vol 306-307 ◽  
pp. 835-838 ◽  
Author(s):  
Xin Cheng ◽  
Dong Yu Xu ◽  
Shuang Shuang Liao ◽  
Shi Feng Huang
Keyword(s):  
Coupling Coefficient ◽  
Electromechanical Coupling ◽  
Piezoelectric Composite ◽  
Electromechanical Coupling Coefficient ◽  
Cement Composites ◽  
Base Thickness ◽  
Minimum Value ◽  
Increasing Trend ◽  
Filling Method ◽  
Titanate Ceramic

Sulphoaluminate cement and Lead Niobium-Magnesium Zirconate Titanate ceramic (PMN) were used as matrix and functional component to fabricate 1-3-2 piezoelectric ceramic-cement composites by dicing and filling method. The influences of base thickness on piezoelectric, dielectric and electromechanical coupling properties of the composites were analyzed and discussed. The results show that with increasing the base thickness, the piezoelectric stain factor d33 increases gradually, while the piezoelectric voltage factor g33 decreases. The relative dielectric factor εr decreases initially and then increases, while the dielectric loss tan δ increases initially and then decreases. When base thickness is 0.50 mm, εr has the minimum value of 1406. When base thickness is 3.00 mm, tan δ reaches the minimum value of 0.251. With increasing the base thickness, the planar electromechanical coupling coefficient Kp exhibits the decreasing trend, and the thickness electromechanical coupling coefficient Kt and acoustic impedance Z show the increasing trend.

The Acoustic Impedance and other Properties of (1-3) Piezoceramics Polymer Composite

2018 ◽  
Vol 879 ◽  
pp. 51-56
Author(s):  
Tawee Tunkasiri ◽  
Jerapong Tontrakoon ◽  
Gobwute Rujijanagul ◽  
Uraiwan Intatha ◽  
Kamonpan Pengpat ◽  
...  
Keyword(s):  
Polymer Composites ◽  
Acoustic Impedance ◽  
Electromechanical Coupling ◽  
Sintering Temperature ◽  
Mechanical Quality Factor ◽  
Electromechanical Coupling Coefficient ◽  
Mechanical Quality ◽  
Lower Volume ◽  
Quality Factor Q ◽  
Fast Firing

The work is focused on an attempt to develop a route for the fabrication of piezoceamic-polymer composites having (1-3) type connectivity. The process included the extrusion of rods of diameter approximately 200 mm. A commercial piezoelectric, PC-5 was modified by addition of a lithium/bismuth based glass former together with excess PbO to lower the sintering temperature to about 1000 °C. The fast firing sintering was employed. The rods were assembled and impregnated with an epoxy resin to form 1-3 composites containing approximately 50 and 20 vol% piezoceramic. The measurement values showed that, the piezoelectric constant, d33= 232 pCN-1and 215 pCN-1, thickness electromechanical coupling coefficient, kt= 0.51 and 0.5 and the mechanical quality factor, Qm= 14 and 5 for the composites containg PZT rods at 50 vol% and 20 vol% respectively. Their acoustic impedances were 5.1 and 3.6 for the 50 vol% and 20 vol% of PZT rods respectively. The results show that with lower volume% of PZT could result in lower acoustic impedance which can be further improved for biomedical imaging and hydrophone applications.

Influence of Thickness Parameters on 2-2 Cement Based Piezoelectric Composite

2009 ◽  
Vol 79-82 ◽  
pp. 31-34 ◽  
Author(s):  
Xin Cheng ◽  
Dong Yu Xu ◽  
Li Li Guo ◽  
Shi Feng Huang
Keyword(s):  
Electromechanical Coupling ◽  
Lead Zirconate ◽  
Mechanical Quality Factor ◽  
Lead Magnesium Niobate ◽  
Piezoelectric Composite ◽  
Electromechanical Coupling Coefficient ◽  
Electromechanical Properties ◽  
Lead Magnesium ◽  
Piezoelectric Strain ◽  
Tan Δ

2-2 cement based piezoelectric composite was fabricated using sulphoaluminate cement and lead magnesium niobate-lead zirconate-lead titanate ceramic (P(MN)ZT) by dice-and-fill technique. The effects of composite thickness on dielectric, piezoelectric and electromechanical properties of the composite were analyzed, respectively. The results show that the increase of composite thickness will improve the piezoelectric strain factor d33 of the composite, while decreases the piezoelectric voltage factor g33 of the composite. The relative dielectric factor εr as well as the dielectric loss tan δ of the composite also increases with increasing the thickness. The electromechanical analysis results show that the thickness electromechanical coupling coefficient Kt of the composite increases obviously with decreasing the thickness, meanwhile the mechanical quality factor Qm of the composite shows the increasing trend, thus, the receiving piezoelectric transducers can be fabricated by decreasing the thickness.

Research on Electromechanical Properties of Cymbal Piezocomposite Transducer

2005 ◽  
Vol 475-479 ◽  
pp. 1087-1090
Author(s):  
Deng Hua Li ◽  
Ke Li ◽  
Yang Cheng
Keyword(s):  
Electric Field ◽  
Transmission Coefficient ◽  
Coupling Coefficient ◽  
Applied Electric Field ◽  
Piezoelectric Ceramic ◽  
Electromechanical Coupling ◽  
Applied Force ◽  
Electromechanical Coupling Coefficient ◽  
Electromechanical Properties ◽  
Piezoelectric Phase

The electromechanical properties of cymbal piezocomposite transducer were investigated in this paper. Piezoelectric ceramic PZT—5A was used as piezoelectric phase of transducer, and brass foil was used as end cap electrode of cymbal piezocomposite transducer. Several types of this transducer were fabricated. The displacements of this transducer as functions of the applied force and the applied electric field were investigated. It was calculated and analyzed for the energy transmission coefficient and electromechanical coupling coefficient of this transducer which optimum values were obtained.

Effect of Low-Temperature Frit on the Sintering Behavior and Properties of 0.95K0.49Na0.51NbO3-0.05LiSbO3 Lead-Free Piezoceramics

2011 ◽  
Vol 412 ◽  
pp. 290-293
Author(s):  
Zhu Mei Wang ◽  
Yue Ming Li ◽  
Run Run Li ◽  
Zong Yang Shen ◽  
Yan Hong
Keyword(s):  
Low Temperature ◽  
Electromechanical Coupling ◽  
Sintering Temperature ◽  
Mechanical Quality Factor ◽  
Lead Free ◽  
Piezoelectric Response ◽  
Electromechanical Coupling Coefficient ◽  
Sintering Behavior ◽  
Mechanical Quality ◽  
Reduced Temperature

The effects of low-temperature frit Li2O-Na2O-K2O-B2O3-SiO2-CaO-BaO-ZnO (abbreviated as BS) on the sintering behavior and electrical properties of 0.95K0.49Na0.51NbO3- 0.05LiSbO3 (abbreviated as KNN-LS) lead-free piezoceramics were investigated. The sintering temperature of the KNN-LS ceramics can be reduced from 1080 °C to 1000 °C due to the addition of BS frit. For the 0.5 wt% BS-doped KNN-LS ceramics, which are sintered at reduced temperature of 1000 °C for 2 h, remain relatively high piezoelectric constant d33 (195 pC/N) and planar electromechanical coupling coefficient kp (40.7%). In addition to other optimization effects, such as reduction of dielectric loss from 3.6% to 2.7% and increment of mechanical quality factor Qm from 48 to 70, this BS frit was experimentally proved to be good for low temperature sintering of KNN-based ceramics while maintaining high piezoelectric response.

Single Crystal PMNT/Polymer 1-3-2 Piezoelectric Composites

2007 ◽  
Vol 124-126 ◽  
pp. 1103-1107
Author(s):  
Li Kun Wang ◽  
Shu Xiang Li ◽  
Lei Qin ◽  
Hong Liang Du ◽  
Li Li
Keyword(s):  
Single Crystal ◽  
Electromechanical Coupling ◽  
Lead Magnesium Niobate ◽  
Center Frequency ◽  
Piezoelectric Composite ◽  
Electromechanical Coupling Coefficient ◽  
The Novel ◽  
Electromechanical Properties ◽  
Lead Magnesium ◽  
Pulse Echo

Lead magnesium niobate-lead titannate single crystal (abbreviated as PMNT) was used to fabricate PMNT/polymer 1-3-2 piezoelectric composite with different volume fractions of PMNT, by dicing single crystal PMNT along mutually perpendicular two directions on the surface and then filling polymer into grooves. The piezoelectric, dielectric and electromechanical properties of the novel composite were determined. It was demonstrated that a thickness electromechanical coupling coefficient of the composites could reach as high as 0.75 and acoustic impendence decreased to 14.9 Mrayls (lower than 30 Mrayls of PMNT). The pulse-echo waveforms of the composites without backing were also measured. It showed a -6dB bandwidth of 88% at the center frequency of 0.95MHz.

Temperature-Dependent Properties of a 1–3 Connectivity Piezoelectric Ceramic–Polymer Composite

2015 ◽  
Vol 2 (3-4) ◽  
pp. 107-112
Author(s):  
Xinyun Gu ◽  
Ying Yang ◽  
Ji Chen ◽  
Yiping Wang
Keyword(s):  
Coupling Coefficient ◽  
Acoustic Impedance ◽  
Piezoelectric Ceramic ◽  
Electromechanical Coupling ◽  
Volume Fraction ◽  
Ferroelectric Properties ◽  
Polymer Processing ◽  
Electromechanical Coupling Coefficient ◽  
Temperature Dependent ◽  
Temperature Dependent Properties

Abstract In this work, the 1–3 connectivity piezoelectric ceramic–polymer composites have been fabricated by a viscous-polymer processing, where 0.90Pb(Zr0.52Ti0.48)O3–0.05Pb(Mn1/3Sb2/3)O3–0.05Pb(Zn1/3Nb2/3)O3 (PZT–PMS–PZN) fibers with 0.5 volume fraction were aligned in epoxy matrix. The sintered PZT fibers, with average diameter of 300 μm and aspect ratio (height/diameter) higher than 3, all showed a pure perovskite phase structure and highly dense morphology. The dielectric, piezoelectric, ferroelectric properties and the vibration modes of the 1–3 composites were measured and demonstrated in comparison with that of the monolithic piezoelectric ceramics. The results confirmed that the 1–3 composites possessed a low acoustic impedance (Z) of 13 MRayl and a high thickness coupling coefficient (k t) of 0.59, in addition, only single thickness vibration mode with the resonance frequency over 1.5 MHz was observed. With temperature elevation, the properties including dielectric constant εr , k t, the ratio of k t to k p (k t/k p) and the acoustic impedance (Z) increase, while the planar electromechanical coupling coefficient (k p) show opposite temperature dependence. Under test temperature of 100°C, the 1–3 composites still present excellent temperature stability with increased k t/k p ratio up to 3.6. The researches on temperature-dependent properties of the 1–3 composites are critical for improving its applications in various environments.

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