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Method for preparing nanocrystalline nickel-ferro-cobalt ternary alloy through pulse electrodeposition

A ternary alloy, electrodeposition technology, applied to the improvement of process efficiency, photographic technology, instruments, etc., can solve the problems of low deposition rate, low current density, coarse grains, etc., to achieve uniform composition, small linear expansion coefficient, The effect of small internal stress

Inactive Publication Date: 2012-01-11
CHANGCHUN UNIV OF TECH
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AI Technical Summary

Problems solved by technology

The traditional electrodeposition method has a low current density, so the deposition rate is low, and the grown grains are relatively coarse

Method used

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  • Method for preparing nanocrystalline nickel-ferro-cobalt ternary alloy through pulse electrodeposition
  • Method for preparing nanocrystalline nickel-ferro-cobalt ternary alloy through pulse electrodeposition
  • Method for preparing nanocrystalline nickel-ferro-cobalt ternary alloy through pulse electrodeposition

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0021] 1. Embodiment 1

[0022] The pure copper plate sample is used as the cathode material in the test, and the electrolytic nickel plate and pure iron plate are used as the anode material. The area of ​​the electrolytic nickel plate is 120mm×120mm; the area of ​​the pure iron plate is 120mm×20mm. The electroplating power supply adopts double-pulse numerical control controllable power supply. The cathode moving device and circulation filter device are used in the pulse electroplating process. After derusting, degreasing, and surface activation treatment, the pure copper plate sample was subjected to pulse electroplating of nickel-iron-cobalt ternary alloy under the conditions of circulating stirring and cathode movement. The composition of the plating solution and the plating conditions are shown in Table 1. The microstructure and composition energy spectrum of the obtained nanocrystalline nickel-iron-cobalt ternary alloy material are as follows: figure 1 , figure 2 show...

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Abstract

The invention provides a method for preparing a nanocrystalline nickel-ferro-cobalt ternary alloy through pulse electrodeposition. By adopting electrodeposition equipment which comprises a cycling filtration device, a stirring device, a temperature control device and a cathode moving device and an additive agent a 2-5g / l and an additive agent b 0.25-1g / l, the nanocrystalline nickel-ferro-cobalt ternary alloy is obtained under the technological parameters of electroplating solution temperature of 20-60 DEG C, pH of 3.2-3.6, and cathode current density of 2-12A / dm2. The method provided by the invention has the characteristics of simpleness and easiness in control of the technological process, stable product quality, fine grain size, uniform structure, high purity, small environment pollution, low production cost and the like.

Description

technical field [0001] The invention relates to a method for preparing nanocrystalline metal crystals, in particular to a method for preparing nanocrystalline nickel-iron-cobalt ternary alloy crystals by pulse electrodeposition. Background technique [0002] The key to obtaining nanocrystals is to effectively control the nucleation and growth of crystal grains during the preparation process. The traditional electrodeposition method has a low current density, so the deposition rate is low, and the grown grains are relatively coarse. However, the current density required for the preparation of nanocrystals is much higher than that of general electrodeposition, the growth rate of crystal nuclei is high, and the growth rate of crystals is small, so the size of crystal grains can be controlled in the nanometer range. Nanocrystals have high strength, high plasticity, ductility, wear resistance, electrical resistance, hardness, electrochemical properties, and special physical prop...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C25D3/56C25D5/18C25C1/24
CPCY02P10/20
Inventor 李雪松杨友杨悦吴化王淮
Owner CHANGCHUN UNIV OF TECH
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