Poling of Lead Zirconate Titanate Ceramics and Flexible Piezoelectric Composites by the Corona Discharge Technique

Waller, David J.; Iqbal, Toriq; Safari, A.

doi:10.1111/j.1151-2916.1989.tb06125.x

Cited by 49 publications

(21 citation statements)

References 6 publications

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“…Sintering was followed by poling of the ceramic, using the corona technique. 17 A potential of 26 kV was applied to the corona needle tips, which were 45 mm away from the sample. Poling was conducted for 15 min, while the sample temperature was decreased from 60°C to 45°C during the poling process.…”

Section: Methodsmentioning

confidence: 99%

Fabrication of Piezoelectric Ceramic/Polymer Composite Transducers Using Fused Deposition of Ceramics

Lous

Cornejo

McNulty

et al. 2000

Journal of the American Ceramic Society

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The fused deposition of ceramics (FDC) technique was used to fabricate piezoelectric ceramic skeletons for the development of piezoelectric composite transducers with 2-2 connectivity for medical imaging. The green parts were designed to have 30 vol% lead zirconate titanate ceramic (PZT-5H) in the final composites. Physical characterization of the sintered samples revealed that 96% of the theoretical density was achieved. Optical microscopy showed that defects due to the FDC mode of deposition, such as small roads and bubbles, were eliminated, because of improvements in powder processing. The electromechanical properties of the final composites were similar to the properties that were obtained for conventionally made composites. A matching layer and a backing layer, as well as wires and an inductor, were added to each FDC composite to fabricate a functional medical imaging transducer. The devices were tested in water using a steel target 3.5 cm thick. Echoes from the target could be detected with all the transducers that were fabricated using FDC. The sensitivities of the transducers were similar to that of a commercial transducer. However, the ringing was much longer than that for a commercial transducer, because the backing layer was not optimized in the transducers that were fabricated using FDC.

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Section: Methodsmentioning

confidence: 99%

Fabrication of Piezoelectric Ceramic/Polymer Composite Transducers Using Fused Deposition of Ceramics

Lous

Cornejo

McNulty

et al. 2000

Journal of the American Ceramic Society

Self Cite

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“…The influence of corona polarization on the dielectric constant is an issue of debate, where some scholars have found no difference in dielectric constants that were polarized using the parallel plate contact and corona polarization methods. 36 On the other hand, Waller et al 49 found that polarization by the corona method produced higher dielectric constants than the conventional method. Based on the increases in dielectric constant and decrease in d 33 at 0.13 volume fraction of PZT (in control 2 and data sets H and I), it is believed that the percolation threshold was achieved at the volume fraction of 0.13.…”

Section: B Piezoelectric and Dielectric Characterizationmentioning

confidence: 99%

Dielectric and piezoelectric properties of percolative three-phase piezoelectric polymer composites

Sundar¹

2016

Journal of Vacuum Science &Amp; Technology B, Nanotechnology and Microelectronics: Materials, Processing, Measurement, and Phen

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Articles you may be interested in Design, fabrication, and properties of 2-2 connectivity cement/polymer based piezoelectric composites with varied piezoelectric phase distribution J. Appl. Phys. 116, 244103 (2014) Three-phase piezoelectric bulk composites were fabricated using a mix and cast method. The composites were comprised of lead zirconate titanate (PZT), aluminum (Al), and an epoxy matrix. The volume fraction of the PZT and Al was varied from 0.1 to 0.3 and 0.0 to 0.17, respectively. The influences of an electrically conductive filler (Al), polarization process (contact and Corona), and Al surface treatment, on piezoelectric and dielectric properties, were observed. The piezoelectric strain coefficient, d 33 , effective dielectric constant, e r , capacitance, C, and resistivity were measured and compared according to polarization process, the volume fraction of constituent phases, and Al surface treatment. The maximum values of d 33 were $3.475 and $1.0 pC/N for corona and contact poled samples, respectively, for samples with volume fractions of 0.40 and 0.13 of PZT and Al (surface treated), respectively. Also, the maximum dielectric constant for the surface treated Al samples was $411 for volume fractions of 0.40 and 0.13 for PZT and Al, respectively. The percolation threshold was observed to occur at an aluminum volume fraction of 0.13. The composites achieved a percolated state for Al volume fractions >0.13 for both contact and corona poled samples. In addition, a comparative time study was conducted to examine the influence of surface treatment processing time of aluminum particles. The effectiveness of the surface treatment, sample morphology and composition was observed with the aid of scanning electron microscope and energy dispersive x-ray spectroscopy images. These images were correlated with piezoelectric and dielectric properties.

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“…The films were then electrically poled using a corona discharging technique [13], [14] as shown in Fig. 2(b) (step S5).…”

Section: Fabricationmentioning

confidence: 99%

High-temperature piezoelectric film ultrasonic transducers by a sol-gel spray technique and their application to process monitoring of polymer injection molding

et al. 2006

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Poling of Lead Zirconate Titanate Ceramics and Flexible Piezoelectric Composites by the Corona Discharge Technique

Cited by 49 publications

References 6 publications

Fabrication of Piezoelectric Ceramic/Polymer Composite Transducers Using Fused Deposition of Ceramics

Fabrication of Piezoelectric Ceramic/Polymer Composite Transducers Using Fused Deposition of Ceramics

Dielectric and piezoelectric properties of percolative three-phase piezoelectric polymer composites

High-temperature piezoelectric film ultrasonic transducers by a sol-gel spray technique and their application to process monitoring of polymer injection molding

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