Ceramic particle size dependence of dielectric and piezoelectric properties of piezoelectric ceramic‐polymer composites

1990 ◽  
Vol 67 (4) ◽  
pp. 2024-2028 ◽  
Author(s):  
Hyeung‐Gyu Lee ◽  
Ho‐Gi Kim
Keyword(s):  
Particle Size ◽  
Polymer Composites ◽  
Piezoelectric Ceramic ◽  
Size Dependence ◽  
Piezoelectric Properties ◽  
Ceramic Particle ◽  
Dielectric And Piezoelectric Properties

The Effect of Particle Size on the Electromechanical Properties of PZT/PVDF

2009 ◽  
Vol 66 ◽  
pp. 238-241
Author(s):  
Xiao Fang Liu ◽  
Hua Jun Sun ◽  
Ming Wei ◽  
C.X. Xiong
Keyword(s):  
Particle Size ◽  
Piezoelectric Ceramic ◽  
Electromechanical Coupling ◽  
Piezoelectric Properties ◽  
Volume Fraction ◽  
Relative Dielectric Constant ◽  
Connectivity Pattern ◽  
Conventional Solid State Reaction ◽  
Pressing Method ◽  
Dielectric And Piezoelectric Properties

The Nb modified PZT piezoelectric ceramic was synthesized by conventional solid-state reaction, where all of different particle sizes had the same physical properties. 0-3 modified PZT/PVDF composites were formed by hot-pressing method. The particle size effect of modified PZT on the relative dielectric and piezoelectric properties of the composites were investigated. The relative dielectric constant εr, piezoelectric constant d33 and electromechanical coupling factor kp were higher in the composite containing larger PZT particle size. The microstructures of the composites were studied by SEM, the composite with the finer PZT particle size was more homogeneous, but larger particle size was easy to be contacted. In a high volume fraction particle-loaded composite, some piezoelectric ceramic particle appeared to be in contact, as in a 1-3 connectivity pattern. The larger particle size of modified PZT itself could be seen as the grain of modified PZT contact in a 1-3 connectivity pattern and easy to be contacted each other compared to the finer particle size in the composites, thus reducing the resistance of the composites and the poling process became effective, which led to higher properties. The optimal particle size of PZT is about 100μm, the Nb modified PZT/PVDF (volume fraction 70/30) composite show higher dielectric and piezoelectric properties than the others, εr=156.6, d33=69pC/N and kp=0.358.

Microstructure and Characteristics of PbTiO3-PbZrO3-Pb(Mg1/3Nb2/3)O3- Pb(Zn1/3Nb2/3)O3 Ceramics

2007 ◽  
Vol 280-283 ◽  
pp. 175-180
Author(s):  
Chun Huy Wang
Keyword(s):  
Dielectric Constant ◽  
Piezoelectric Ceramic ◽  
Composition Range ◽  
Piezoelectric Properties ◽  
Coupling Factor ◽  
Mechanical Quality Factor ◽  
Optimal Choice ◽  
Mechanical Quality ◽  
Piezoelectric Measurement ◽  
Dielectric And Piezoelectric Properties

The new piezoelectric ceramic of PbTiO3-PbZrO3-Pb(Mg1/3Nb2/3)O3 -Pb(Zn1/3Nb2/3)O3 with composition close to the morphotropic phase boundary was studied. The dielectric and piezoelectric properties of Pb0.96Sr0.04[(Zr1-yTiy)0.74(Mg1/3Nb2/3)0.20(Zn1/3Nb2/3)0.06]O3 were investigated, the composition range examined are 0.47 £ y £ 0.57. From the results of XRD and piezoelectric measurement, it is supposed that the composition with y = 0.51 corresponds to M.P.B. between tetragonal and pseudocubic perovskite. Some developed phenomena or models are introduced and take it to interpret well. After optimal choice of these conditions, the planar coupling factor close to 0.65, mechanical quality factor Qm close to 75, the longitude wave velocity close to 4100 m/s and the poled dielectric constant close to 2600 can be approached in this study.

Molten Salts Synthesis and Dielectric Properties of PMN-PT Ceramics

2005 ◽  
Vol 475-479 ◽  
pp. 1153-1156 ◽  
Author(s):  
Shi Xi Zhao ◽  
Qiang Li ◽  
Feng Bing Song
Keyword(s):  
Particle Size ◽  
Dielectric Properties ◽  
Molten Salts ◽  
Piezoelectric Properties ◽  
Perovskite Phase ◽  
Theoretical Density ◽  
Densification Process ◽  
Single Perovskite Phase ◽  
Dielectric And Piezoelectric Properties

Single perovskite phase PMN-PT powders had been synthesized using molten salts method. The powders of PMN-PT synthesized by MSS had submicrometer particle size and high sinterability, which beneficial to an enhancement of the densification process and a decrease of the sintering temperatures. These advantages have an important bearing on the dielectric properties of these materials. The density of ceramics sintered at 1175°C was up to 98% of the theoretical density. These ceramics had excelled dielectric and piezoelectric properties.

Influence of Ceramic Particle Size on Piezoelectric Properties of Cement-Based Piezoelectric Composites

2006 ◽  
Vol 332 (1) ◽  
pp. 187-194 ◽  
Author(s):  
Huang Shifeng ◽  
Lu Lingchao ◽  
Chang Jun ◽  
Xu Dongyu ◽  
Liu Futian ◽  
...  
Keyword(s):  
Particle Size ◽  
Piezoelectric Properties ◽  
Ceramic Particle ◽  
Piezoelectric Composites
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