scholarly journals Facile fabrication of polyurethane-based graphene foam/lead zirconate titanate/polydimethylsiloxane composites with good damping performance

RSC Advances ◽  
2018 ◽  
Vol 8 (15) ◽  
pp. 7916-7923 ◽  
Author(s):  
Chunmei Zhang ◽  
Yujie Chen ◽  
Hua Li ◽  
Wenchao Xue ◽  
Ran Tian ◽  
...  
Keyword(s):  
Lead Zirconate Titanate ◽  
Three Dimensional ◽  
Lead Zirconate ◽  
Graphene Foam ◽  
Temperature Range ◽  
Conductive Phase ◽  
Zirconate Titanate ◽  
Facile Fabrication

Using three-dimensional graphene foam as the conductive phase, the temperature range where tan δ > 0.3 for a piezo-damping PGPP composite is broadened to −70 to 100 °C.

Cross-poling Textures in a Lead Zirconate Titanate Piezoelectric Material

2000 ◽  
Vol 15 (6) ◽  
pp. 1248-1249 ◽  
Author(s):  
Shan Wan ◽  
Keith J. Bowman
Keyword(s):  
Pole Figure ◽  
Lead Zirconate Titanate ◽  
Piezoelectric Effect ◽  
Three Dimensional ◽  
Lead Zirconate ◽  
Ferroelectric Materials ◽  
Domain Motion ◽  
Orientation Process ◽  
Zirconate Titanate ◽  
Applied Fields

Tetragonal ferroelectric materials are polarized to induce the anisotropy necessary for the piezoelectric effect. This poling of the material is inherently an orientation process. Pole figure texture measurements of poling and cross-poling in a lead zirconate titanate Navy VI material show domain motion. The resulting axisymmetric and three-dimensional textures demonstrate the contribution of 90° domain motion to piezoelectricity. Cross-poling results in strong orientations with lower applied fields than in the initial poling steps.

scholarly journals Facile Fabrication of a Novel PZT@PPy Aerogel/Epoxy Resin Composite with Improved Damping Property

Polymers ◽  
2019 ◽  
Vol 11 (6) ◽  
pp. 977 ◽  
Author(s):  
Chunmei Zhang ◽  
Yuchao Li ◽  
Yanhu Zhan ◽  
Qian Xie
Keyword(s):  
Epoxy Resin ◽  
Lead Zirconate Titanate ◽  
In Situ Polymerization ◽  
Resin Composite ◽  
Three Dimensional ◽  
Lead Zirconate ◽  
Mechanical Analysis ◽  
Damping Property ◽  
Zirconate Titanate ◽  
Filling Method

A novel lead zirconate titanate@polypyrrole (PZT@PPy) aerogel (PPA) was fabricated via in-situ polymerization and subsequent freeze-drying method. The porous PPA was then saturated with epoxy resin to obtain the PPA/epoxy composite (PPAE) by a simple vacuum filling method. In this way, the filler content and dispersion uniformity are well guaranteed, which is in favor of improving the damping and mechanical properties of composites. The morphology and structure of PPAs were investigated using XRD, SEM, EDS and nitrogen absorption and desorption measurements. The results showed that the PPA possessed a three-dimensional porous structure with uniform lead zirconate titanate (PZT) distribution. The influence of PZT content on the damping property of PPAE composite was investigated by dynamic mechanical analysis (DMA). PPAE-75 (i.e., the mass ratio of PZT to PPy is 75 wt %) exhibited the maximum damping loss factor value, 360% higher than that of the epoxy matrix, suggesting good structural damping performance.

An incommensurate-commensurate phase transformation in antiferroelectric tin-modified lead zirconate titanate

1995 ◽  
Vol 10 (2) ◽  
pp. 453-460 ◽  
Author(s):  
Z. Xu ◽  
Dwight Viehland ◽  
D.A. Payne
Keyword(s):  
Lead Zirconate Titanate ◽  
Lead Zirconate ◽  
Temperature Range ◽  
Selected Area Electron Diffraction ◽  
Zirconate Titanate ◽  
Incommensurate Structure ◽  
Transmission Electron ◽  
Commensurate Phase ◽  
Titanate Ceramics ◽  
Modulation Wavelength

Antiferroelectric tin-modified lead zirconate titanate ceramics (PZST), with 42 at. % Sn and 4 at. % Ti, were studied by hot- and cold-stage transmission electron microscopy and selected area electron diffraction techniques. The previously reported tetragonal antiferroelectric state is shown to be an incommensurate orthohombic state. Observations revealed the existence of incommensurate 1/x 〈110〉 superlattice reflections below the temperature of the dielectric maximum. The modulation wavelength for this incommensurate structure was found to be metastably locked-in near and below room temperature. An incommensurate-commensurate orthorhombic antiferroelectric transformation was then observed at lower temperatures. However, an intermediate condition was observed over a relatively wide temperature range which was characterized by an intergrowth of 〈110〉 structural modulations, which was strongly diffuse along the 〈110〉. These structural observations were correlated with dispersion in the dielectric properties in the same temperature range. No previous reports of an incommensurate orthorhombic antiferroelectric state or an incommensurate-commensurate orthorhombic antiferroelectric transformation are known to exist.

Evaluation of the Performance of Piezoceramic Materials at Moderately Elevated Temperatures

2002 ◽  
Author(s):  
Mark J. Schulz ◽  
Mannur J. Sundaresan ◽  
Jason McMichael ◽  
David Clayton
Keyword(s):  
Lead Zirconate Titanate ◽  
Elevated Temperatures ◽  
Smart Structures ◽  
Lead Zirconate ◽  
Turbine Engine ◽  
Temperature Range ◽  
Zirconate Titanate ◽  
Materials Used ◽  
Increasing Temperature

Piezoceramic materials used for the actuating and sensing of smart structures are limited in the temperature range in which they can operate. Operation at temperatures above ambient is desired for many applications including aircraft, turbine engine housings and others. The decrease in actuation and sensing capability with increasing temperature is due to the loss of stiffness of the adhesive used to bond piezoceramic patches to structures, and the loss of the piezoceramic properties through partial depoling of the lead zirconate titanate material. This paper examines the performance of piezoceramic patch actuators at moderately elevated temperatures.

Convergent-bceam diffraction studies on lead zirconate titanate Ceramics

1986 ◽  
Vol 44 ◽  
pp. 482-483
Author(s):  
M.L.A. Dass ◽  
T.A. Bielicki ◽  
G. Thomas ◽  
T. Yamamoto ◽  
K. Okazaki
Keyword(s):  
Lead Zirconate Titanate ◽  
Direct Proof ◽  
Lead Zirconate ◽  
Subsolidus Phase ◽  
Pzt Ceramics ◽  
Subsolidus Phase Diagram ◽  
Zirconate Titanate ◽  
Two Phases ◽  
Cbd Method ◽  
Titanate Ceramics

Lead zirconate titanate, Pb(Zr,Ti)O3 (PZT), ceramics are ferroelectrics formed as solid solutions between ferroelectric PbTiO3 and ant iferroelectric PbZrO3. The subsolidus phase diagram is shown in figure 1. PZT transforms between the Ti-rich tetragonal (T) and the Zr-rich rhombohedral (R) phases at a composition which is nearly independent of temperature. This phenomenon is called morphotropism, and the boundary between the two phases is known as the morphotropic phase boundary (MPB). The excellent piezoelectric and dielectric properties occurring at this composition are believed to.be due to the coexistence of T and R phases, which results in easy poling (i.e. orientation of individual grain polarizations in the direction of an applied electric field). However, there is little direct proof of the coexistence of the two phases at the MPB, possibly because of the difficulty of distinguishing between them. In this investigation a CBD method was found which would successfully differentiate between the phases, and this was applied to confirm the coexistence of the two phases.

Fabrication of Bimorph Lead Zirconate Titanate Thick Films on Metal Substrates Via the Cold Sintering Process

2020 ◽  
Author(s):  
Dixiong Wang ◽  
Sinan Dursun ◽  
Lisheng Gao ◽  
Carl S. Morandi ◽  
Clive A. Randall ◽  
...  
Keyword(s):  
Lead Zirconate Titanate ◽  
Thick Films ◽  
Lead Zirconate ◽  
Sintering Process ◽  
Metal Substrates ◽  
Zirconate Titanate
Sign in / Sign up

Export Citation Format

Share Document