2-2 PIMNT/epoxy 压电复合材料的模拟和结构设计

IF 2.1 3区物理与天体物理 Q3 PHYSICS, APPLIED

Journal of Advanced Dielectrics Pub Date : 2024-01-23 DOI:10.1142/s2010135x23500315

Wanggen Chen, Fei Wen, Yao Wan, Lili Li, Yang Li, Yu Zhou

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引用次数: 0

摘要

压电材料因其能量转换特性而常用于转换机电信号的传感器中。我们设计了一种 PIMNT/epoxy 2-2 复合材料，以充分利用 PIMNT 单晶优异的束模压电和声学特性。按照压电陶瓷复合材料的方法，我们选择了 PIMNT 压电单晶和 EPO-TEK301-2 环氧树脂作为复合材料，并将有限元分析与实验制备相结合。我们制备、测试并分析了 2-2 种不同体积分数的压电单晶复合材料，结果表明这些复合材料具有较高的机电耦合性能（[计算公式：见正文]%）和较低的声阻抗（[计算公式：见正文][计算公式：见正文]MRayl）。这些令人鼓舞的发现表明，利用 PIMNT/epoxy 2-2 复合材料设计高性能超声波传感器是有可能的。

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Simulation and structural design of 2–2 PIMNT/epoxy piezoelectric composites

Piezoelectric materials are commonly used in transducers to convert electromechanical signals due to their energy conversion characteristics. We designed a PIMNT/epoxy 2–2 composite to take full advantage of the excellent beam-mode piezoelectric and acoustic features of PIMNT single crystals. Following the approach used for piezoelectric ceramic composites, we selected PIMNT piezoelectric single crystal and EPO-TEK301-2 epoxy resin for the composite, and combined finite element analysis with experimental preparation. We prepared, tested and analyzed 2–2 piezoelectric single crystal composites with varying volume fractions, which showed high electromechanical coupling properties ([Formula: see text]%) and low acoustic impedance ([Formula: see text][Formula: see text]MRayl). These encouraging findings suggest the possibility of devising high-performance ultrasonic transducers utilizing the PIMNT/epoxy 2–2 composite.

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来源期刊

Journal of Advanced Dielectrics PHYSICS, APPLIED-

CiteScore

3.80

自引率

6.50%

发文量

审稿时长

18 weeks

期刊介绍： The Journal of Advanced Dielectrics is an international peer-reviewed journal for original contributions on the understanding and applications of dielectrics in modern electronic devices and systems. The journal seeks to provide an interdisciplinary forum for the rapid communication of novel research of high quality in, but not limited to, the following topics: Fundamentals of dielectrics (ab initio or first-principles calculations, density functional theory, phenomenological approaches). Polarization and related phenomena (spontaneous polarization, domain structure, polarization reversal). Dielectric relaxation (universal relaxation law, relaxor ferroelectrics, giant permittivity, flexoelectric effect). Ferroelectric materials and devices (single crystals and ceramics). Thin/thick films and devices (ferroelectric memory devices, capacitors). Piezoelectric materials and applications (lead-based piezo-ceramics and crystals, lead-free piezoelectrics). Pyroelectric materials and devices Multiferroics (single phase multiferroics, composite ferromagnetic ferroelectric materials). Electrooptic and photonic materials. Energy harvesting and storage materials (polymer, composite, super-capacitor). Phase transitions and structural characterizations. Microwave and milimeterwave dielectrics. Nanostructure, size effects and characterizations. Engineering dielectrics for high voltage applications (insulation, electrical breakdown). Modeling (microstructure evolution and microstructure-property relationships, multiscale modeling of dielectrics).