Preparation method of nickel electrode made of piezoelectric composite material

A technology of piezoelectric composite materials and nickel electrodes, which is applied in metal material coating process, liquid chemical plating, coating, etc., can solve the problems of inability to form coatings, polymers cannot adhere to electrodes, etc., and achieve uniform and dense coating thickness, Good weldability and wear resistance

Inactive Publication Date: 2012-02-01
UNIV OF JINAN
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, it has not been reported that electroless plating is used to prepare electrodes for piezoelectric composite materials. Coating, polymers cannot adhere to electrodes, so it is necessary to research and explore a new electroless plating method suitable for piezoelectric composite materials in order to make these two different materials have similar self-catalytic activity, so as to obtain a uniform coating

Method used

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  • Preparation method of nickel electrode made of piezoelectric composite material
  • Preparation method of nickel electrode made of piezoelectric composite material
  • Preparation method of nickel electrode made of piezoelectric composite material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0038] The solutions used were as follows:

[0039]

[0040] Prepare each solution as follows:

[0041] Coarse solution: Prepare mineral acid and distilled water in proportion.

[0042] Sensitizer: SnCl 2 2H 2 O, concentrated hydrochloric acid and distilled water are prepared in proportion, and the dissolution process is heated.

[0043] Activation solution: PdCl 2 It is formulated by dissolving in diluted hydrochloric acid, and heat-treated during the dissolution process.

[0044] Nickel plating solution: a. Dissolve the calculated and weighed various chemicals with appropriate amount of distilled water;

[0045] b. NaH 2 PO 2 ·H 2 O and NH 4 Cl solution was mixed to make B solution;

[0046] c. NiSO 4 ·7H 2 O , BSO additive and NaC 6 h 5 o 7 2H 2 Each solution of O is mixed in turn to form A liquid;

[0047] d. Slowly add liquid B to liquid A under constant stirring;

[0048] e. Dilute with distilled water to lower than the specified volume, and adjust t...

Embodiment 2

[0057] The solutions used were as follows:

[0058]

[0059] Prepare required solution according to the method of embodiment 1, adopt the method for electroless nickel plating to carry out nickel plating to 1-3 piezoelectric composite material and 2-2 type piezoelectric composite material, the piezoelectric ceramics in the piezoelectric composite material used is : PMN-ZT or PZT, polymer is epoxy resin, high temperature glue or silica gel, method is as embodiment 1. The samples were obtained as electrodes in the nickel plating solution at 37°C. The obtained electrode plating layer is uniform, has strong binding force with the piezoelectric composite material, is not easy to fall off, and the welding wire is firm and not easy to fall off.

Embodiment 3

[0061] The solutions used were as follows:

[0062]

[0063] Prepare required solution according to the method of embodiment 1, adopt the method for electroless nickel plating to carry out nickel plating to 1-3 piezoelectric composite material and 2-2 type piezoelectric composite material, the piezoelectric ceramics in the piezoelectric composite material used is : PMN-ZT, PZT, polymer is AB-grouting resin, high temperature glue or silica gel, method is as embodiment 1. The samples were obtained as electrodes in the nickel plating solution at 25°C. The obtained electrode plating layer is uniform, has strong binding force with the piezoelectric composite material, is not easy to fall off, and the welding wire is firm.

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Abstract

The invention discloses a preparation method of a nickel electrode made of a piezoelectric composite material. The nickel electrode is prepared by using a chemical plating method. The preparation method comprises steps of roughening, sensitizing and activating the piezoelectric composite material, and putting the piezoelectric composite material in a nickel plating liquid to be plated with nickelto obtain the nickel electrode, wherein the activating solution used in the activation procedure is a palladium salt activating solution or nickel salt activating solution, the palladium salt activating solution is prepared by dissolving PdCl2 in certain hydrochloric acid, the PdCl2 content is 0.3-0.5 g / L and the content of the concentrated HCl is 9.9-11 ml / L; the nickel salt activating solution is prepared by dissolving nickel acetate and sodium borohydride in absolute methanol, the content of the nickel acetate is 64-68 g / L, and the content of the sodium borohydride is 64-68 g / L. The invention has the advantages of high nickel plating speed, easiness in regulating and controlling the thickness of a plating layer, uniform and dense thickness of the plating layer of a nickel plate, strongcombination force of the plating layer, good uniformity and wearing resistance, remarkable erosion resistance, excellent welding property and long service life, so that the application demand of the composite material is met.

Description

technical field [0001] The invention relates to a method for plating nickel electrodes on piezoelectric composite materials, in particular to a method for plating nickel electrodes on piezoelectric composite material components by chemical plating. Background technique [0002] Piezoelectric composite material refers to a new material with piezoelectric effect composed of at least one piezoelectric phase material and non-piezoelectric phase material combined in a certain way. Piezoelectric composite materials have some characteristics such as low acoustic impedance, easy matching with water and human tissue and other propagation media, low mechanical quality factor, high hydrostatic pressure sensitivity value, good temperature stability, etc. widely used. Since piezoelectric composite materials are composed of inorganic non-metallic piezoelectric ceramics and organic material polymers, it is very difficult to make electrodes have good adhesion strength on piezoelectric cera...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C23C18/36C23C18/30C23C18/28C23C18/18
Inventor 程新张颖黄世峰孙敏周美娟郝超
Owner UNIV OF JINAN
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