Electroless plating method for preparing magnetoelectric composite material

A magnetoelectric composite material and electroless plating technology, applied in liquid chemical plating, metal material coating process, coating and other directions, can solve the problem of reducing the magnetoelectric coefficient of magnetoelectric composite materials, and achieve improved coupling performance and deep plating. Strong ability and uniform coating effect

Active Publication Date: 2011-12-21
NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, since the electroplating method must be implemented in a conductor, it is required to sinter the electrode on the non-conductive piezoelectric material PZT, and then the magnetostrictive material can be electroplated on the electrode layer, thereby forming a piezoelectric layer-electrode layer-magnetostrictive layer. The electrode layer without magnetostrictive properties will inevitably reduce the magnetoelectric coupling effect between the magnetostrictive layer and the piezoelectric layer, and reduce the magnetoelectric coefficient of the magnetoelectric composite material.

Method used

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  • Electroless plating method for preparing magnetoelectric composite material
  • Electroless plating method for preparing magnetoelectric composite material
  • Electroless plating method for preparing magnetoelectric composite material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] Cut the PZT to size 18×5×0.4mm 3 Ultrasonic cleaning of flake samples in a mixed solution of alcohol and acetone for 10 minutes; first put the sample in 0.4M hydrofluoric acid solution to roughen for 2 minutes, take it out and rinse it with distilled water; put the sample in 0.08M hydrofluoric acid solution In stannous solution, sensitize at room temperature for 5 minutes, take it out and rinse with distilled water; put the sample in 0.001M palladium chloride solution, activate it at room temperature for 5 minutes, take it out and rinse with distilled water; finally put the sample in 0.2M The sodium phosphite solution is reduced for 15 seconds, and electroless plating can be performed after rinsing with distilled water.

[0029] First, weigh the reagents required for the chemical plating solution formula, dissolve them and mix them separately, adjust the pH value to 9 with NaOH solution, and then dilute to the specified volume with distilled water; then, heat it to 75°C...

Embodiment 2

[0033] Cut the PZT to size 18×6×0.5mm 3 Ultrasonic cleaning of flake samples in a mixed solution of alcohol and acetone for 10 minutes; first put the sample in 0.65M hydrofluoric acid solution for roughening for 6 minutes, take it out and rinse it with distilled water; put the sample in 0.15M hydrofluoric acid solution In stannous solution, sensitize at room temperature for 30 minutes, rinse with distilled water after taking it out; put the sample in 0.005M palladium chloride solution, activate at room temperature for 30 minutes, take it out and rinse with distilled water; finally put the sample in 0.4M The sodium phosphite solution is reduced for 60 seconds, and electroless plating can be performed after rinsing with distilled water.

[0034]First, weigh the medicines required for the chemical plating solution formula, dissolve them and mix them separately, adjust the pH value to 12.5 with NaOH solution, and then dilute to the specified volume with distilled water; then, heat...

Embodiment 3

[0039] Cut the PZT to size 18×5×0.4mm 3 Ultrasonic cleaning of flake samples in a mixed solution of alcohol and acetone for 10 minutes; first put the sample in 0.4M hydrofluoric acid solution to roughen for 2 minutes, take it out and rinse it with distilled water; put the sample in 0.08M hydrofluoric acid solution In stannous solution, sensitize at room temperature for 5 minutes, take it out and rinse with distilled water; put the sample in 0.001M palladium chloride solution, activate it at room temperature for 5 minutes, take it out and rinse with distilled water; finally put the sample in 0.2M The sodium phosphite solution is reduced for 15 seconds, and electroless plating can be performed after rinsing with distilled water.

[0040] First, weigh the reagents required for the chemical plating solution formula, dissolve them and mix them separately, adjust the pH value to 9 with NaOH solution, and then dilute to the specified volume with distilled water; then, heat it to 75°C...

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Abstract

The invention discloses an electroless plating method for preparing magnetoelectric composite materials, which belongs to the technical field of magnetoelectric composite materials. In this method, piezoelectric ceramics with piezoelectric effect are sliced, cut into required sizes, and subjected to chemical plating pretreatments such as grinding, degreasing, chemical roughening, sensitization, activation, and reduction; then the pretreated piezoelectric The ceramic sheet is placed in the prepared chemical plating solution for chemical plating, and after the chemical plating is reached to the required thickness, the polarization is taken out to obtain a magnetoelectric composite material. Compared with the existing preparation methods of magnetoelectric composite materials, the electroless plating method not only eliminates the elastic loss caused by the bonding layer produced in the bonding process and the electrode layer required in the electroplating process, but also eliminates the elastic loss caused by the thermocompression curing process. The adverse effects of interfacial mixing can enhance the elastic bonding force between the ferroelectric phase and the ferromagnetic phase, improve the magnetoelectric coupling performance of the composite material, and simplify the production process.

Description

Technical field [0001] The invention relates to a preparation method of a magnetoelectric composite material directly coupled with a piezoelectric layer and a magnetostrictive layer, and belongs to the technical field of magnetoelectric composite materials with giant magnetoelectric effect. Background technique [0002] With the rapid development of science and technology and the cross-penetration of various disciplines, it is difficult for a single-performance material to meet various high-demand comprehensive indicators. The research on functional composite materials has become a research and development hotspot in the field of materials science and engineering. Magnetoelectric materials, especially magnetoelectric composite materials, have very attractive potential applications in the fields of sensors, magnetic field detection, magnetoelectric energy conversion, intelligent filters, magnetic recording, etc., and have become a very important functional material, causing ma...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C23C18/34C23C18/36
Inventor 王寅岗毕科
Owner NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
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