Evaluation of the Performance of Piezoceramic Materials at Moderately Elevated Temperatures

Author(s):  
Mark J. Schulz ◽  
Mannur J. Sundaresan ◽  
Jason McMichael ◽  
David Clayton

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.

RSC Advances ◽  
2018 ◽  
Vol 8 (15) ◽  
pp. 7916-7923 ◽  
Author(s):  
Chunmei Zhang ◽  
Yujie Chen ◽  
Hua Li ◽  
Wenchao Xue ◽  
Ran Tian ◽  
...  

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.


1995 ◽  
Vol 10 (2) ◽  
pp. 453-460 ◽  
Author(s):  
Z. Xu ◽  
Dwight Viehland ◽  
D.A. Payne

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.


2017 ◽  
Vol 37 (5) ◽  
pp. 2047-2055 ◽  
Author(s):  
Methee Promsawat ◽  
Marco Deluca ◽  
Sirirat Kampoosiri ◽  
Boonruang Marungsri ◽  
Soodkhet Pojprapai

Author(s):  
M.L.A. Dass ◽  
T.A. Bielicki ◽  
G. Thomas ◽  
T. Yamamoto ◽  
K. Okazaki

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.


2020 ◽  
Author(s):  
Dixiong Wang ◽  
Sinan Dursun ◽  
Lisheng Gao ◽  
Carl S. Morandi ◽  
Clive A. Randall ◽  
...  

2016 ◽  
Vol 42 (6) ◽  
pp. 6782-6790 ◽  
Author(s):  
Linggen Kong ◽  
Inna Karatchevtseva ◽  
Rohan Holmes ◽  
Joel Davis ◽  
Yingjie Zhang ◽  
...  

Sign in / Sign up

Export Citation Format

Share Document