Synthesis and characterization of polarized novel 0–3 Terfenol-D/PVDF-TrFE composites
| Autor: | George Youssef, Scott Newacheck |
|---|---|
| Rok vydání: | 2019 |
| Předmět: |
Permittivity
Materials science Mechanical Engineering Magnetostriction 02 engineering and technology Dielectric 010402 general chemistry 021001 nanoscience & nanotechnology 01 natural sciences Ferroelectricity Piezoelectricity Industrial and Manufacturing Engineering 0104 chemical sciences Terfenol-D Mechanics of Materials Ceramics and Composites Electroactive polymers Composite material 0210 nano-technology Electric displacement field |
| Zdroj: | Composites Part B: Engineering. 172:97-102 |
| ISSN: | 1359-8368 |
| DOI: | 10.1016/j.compositesb.2019.05.043 |
| Popis: | Conductive metallic particulate inclusions in electroactive polymer matrix composites have been widely studied for enhanced sensitivity applicable to sensors, energy harvesters, electromechanical actuators, and high charge storage capacitors. If the metallic particulates exhibit magnetostrictive properties, the domain of applications expands due to the direct and converse coupling between electric displacement and magnetization. In this paper, the synthesis of a composite material consisting of giant magnetostrictive alloy particulates, Terfenol-D, embedded into an electroactive polymer matrix, PVDF-TrFE is discussed. The experimental protocol to elucidate the ferroelectric, dielectric, and piezoelectric properties of the novel composite is also reported. It was observed that the ferroelectric polarization was improved with a small weight fraction of Terfenol-D particles, but it was hindered when more weight fraction of the particles was added. Nonetheless, the permittivity of the composite rapidly increased with the addition of more Terfenol-D particles, which was attributed to the reduction in the polarization of the PVDF-TrFE matrix. Finally, a notable phase delay was observed in the piezoelectric strain in response to a high-frequency electric field, such a delay was directly proportionally to the addition of Terfenol-D particles. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|
Full Text from ScienceDirect