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Preparing method for multilayer magnetoelectric composite material

A magnetoelectric composite material and ferromagnetic phase technology, applied in the field of magnetoelectric composite materials, can solve problems such as poor design, complicated process, and low process efficiency, and achieve the effects of wide application, improved efficiency, and high designability

Active Publication Date: 2014-12-10
XIAMEN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] 1. The Terfenol-D / PZT multilayer composite material belongs to the manual repeated double-layer preparation process, and it needs to connect the leads layer by layer to realize the electrical connection. The process is more complicated and the process efficiency is low.
[0006] 2. The multilayer chip capacitor structure belongs to the modification of existing components. There is little room for modification of the components and the size of the multilayer structure. It is difficult to replace high-performance components for compounding, and the designability is poor.

Method used

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  • Preparing method for multilayer magnetoelectric composite material
  • Preparing method for multilayer magnetoelectric composite material
  • Preparing method for multilayer magnetoelectric composite material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] Embodiment 1Ni / PE multilayer magnetoelectric composite material

[0030] Select a pure Ni (N=0.9999) block as the ferromagnetic phase, fix it on a wire cutting machine, write a program, and cut out a multi-layer structure. The two poles of the multilayer structure are not completely cut off and remain connected as a whole. The surface of the multilayer structure was washed with water, ultrasonically cleaned with absolute ethanol for 20 min, and then dried in an oven at 50 °C. Choose 5008-2 type epoxy resin, prepare according to the ratio of A:B=3:1, let it stand at room temperature for 5min to remove foam. PZT-8 piezoelectric ceramic powder is selected, and ceramic powder is added according to the weight ratio of piezoelectric ceramic powder and AB mixture of 8:1. Stir and mix evenly, let stand at room temperature for 10 minutes to remove bubbles, and obtain a piezoelectric phase prefabricated body (PE). The multilayer structure is placed at the bottom of the mold, a...

Embodiment 2A3

[0031] Embodiment 2A3 steel / PE multilayer magnetoelectric composite material

[0032] Choose the A3 steel block as the ferromagnetic phase, fix it on the wire cutting machine, write the program, and cut out the multi-layer structure. The two poles of the multilayer structure are not completely cut off and remain connected as a whole. The surface of the multilayer structure was washed with water, ultrasonically cleaned with absolute ethanol for 20 min, and then dried in an oven at 50 °C. Choose 5008-2 type epoxy resin, prepare according to the ratio of A:B=3:1, let it stand at room temperature for 5min to remove foam. PZT-4 piezoelectric ceramic powder is selected, and ceramic powder is added according to the weight ratio of piezoelectric ceramic powder and AB mixture of 8:1. Stir and mix evenly, let stand for 10 minutes to remove foam, and obtain piezoelectric phase prefabricated body (PE). The multilayer structure is placed at the bottom of the mold, and the piezoelectric ...

Embodiment 3

[0033] Embodiment 3Fe / PE multilayer magnetoelectric composite material

[0034] Select pure Fe (N=0.995) block as the ferromagnetic phase, fix it on the wire cutting machine, write the program, and cut out the multi-layer structure. The two poles of the multilayer structure are not completely cut off and remain connected as a whole. The surface of the multilayer structure was washed with water, ultrasonically cleaned with absolute ethanol for 20 min, and then dried in an oven at 50 °C. Choose 5008-2 type epoxy resin, prepare according to the ratio of A:B=3:1, let it stand at room temperature for 5min to remove foam. PZT-8 piezoelectric ceramic powder is selected, and ceramic powder is added according to the weight ratio of piezoelectric ceramic powder and AB mixture of 8:1. Stir and mix evenly, let stand for 10 minutes to remove foam, and obtain piezoelectric phase prefabricated body (PE). The multilayer structure is placed at the bottom of the mold, and the piezoelectric pha...

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Abstract

A preparing method for a multilayer magnetoelectric composite material relates to a magnetoelectric composite material. The preparing method comprises the steps of cutting required metal raw materials into a plurality of layers of ferromagnetic phases with interdigital electrode structures, cleaning and drying the ferromagnetic phases, choosing and mixing three parts of A components and one part of B components in epoxy resin, standing and defoaming the three parts of A components and one part of B components in epoxy resin to obtain epoxy resin AB mixture, adding piezoelectric ceramic powder, mixing, standing and defoaming the epoxy resin AB mixture to obtain a piezoelectric phase prefabricated body with the fluidity, placing the layers of the ferromagnetic phase structures into a mould, filling the piezoelectric phase prefabricated body with the fluidity to fully fill up interlayer spacing of the ferromagnetic phases, flowing out of the lower surfaces of the ferromagnetic phase structures, standing to solidify the prefabricated body, removing connection portions of multilayer interdigital electrode structures and redundant piezoelectric phases after the prefabricated body solidifies, guiding out leads from two electrodes of the multilayer interdigital electrode structures, placing the leads in silicon oil to carry out polarization and obtaining the multilayer magnetoelectric composite material. The preparing method is high in designability and simple in preparing process.

Description

technical field [0001] The invention relates to a magnetoelectric composite material, in particular to a preparation method of a multilayer magnetoelectric composite material. Background technique [0002] Magnetoelectric composite materials are obtained by combining ferromagnetic phase materials and piezoelectric phase materials. They have the magnetoelectric effect of electric polarization generated by applying a magnetic field, and can be used in new devices such as sensors, transducers, and energy harvesters. The principle of the magnetoelectric effect of the magnetoelectric composite material is: when an external magnetic field is applied, the ferromagnetic phase undergoes magnetostriction, the ferromagnetic phase and the piezoelectric phase contact each other, and the strain generated by the magnetostriction is partially transmitted to the piezoelectric phase. After the piezoelectric phase is indirectly applied with strain, electric polarization is generated due to the...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01L43/12H10N50/01
Inventor 施展陈来柱邓数文佟永帅薛昊杨水源卢勇王翠萍刘兴军
Owner XIAMEN UNIV