A preparation method of nickel-cobalt-based nanocomposite coating for sintering NdFeB

A nano-composite, neodymium-iron-boron technology, applied in coatings, electrolytic coatings, etc., can solve the problems of thin coating, high bonding force between coating and substrate, and low stress, so as to reduce the content of nickel, and the electroplating process is stable and compact sex high effect

Active Publication Date: 2022-03-11
TIANJIN SANHUAN LUCKY NEW MATERIAL CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] In order to solve the problem of how to prepare a coating with high compactness, thin coating thickness, low stress and high bonding force between the coating and the substrate, the present invention provides a nickel-cobalt-based nanocomposite coating for sintered NdFeB Preparation

Method used

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  • A preparation method of nickel-cobalt-based nanocomposite coating for sintering NdFeB
  • A preparation method of nickel-cobalt-based nanocomposite coating for sintering NdFeB
  • A preparation method of nickel-cobalt-based nanocomposite coating for sintering NdFeB

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Embodiment 1

[0100] Embodiment one, combining figure 1 :

[0101] A preparation method for a nickel-cobalt-based nanocomposite coating for sintering NdFeB, comprising the following steps:

[0102] S1: Before electroplating sintered NdFeB, it is necessary to pretreat the surface of sintered NdFeB;

[0103] S2: preparing a nickel-cobalt alloy electroplating solution and a composite nanomaterial additive solution;

[0104] S3: mixing the prepared nickel-cobalt alloy electroplating solution and the composite nanomaterial additive solution according to a certain volume ratio to form a composite nickel-cobalt-based nano-plating solution;

[0105] S4: Use composite nickel-cobalt-based nano-plating solution to electroplate the surface of sintered NdFeB, and the electroplating time is controlled at 60min to 120min;

[0106] S5: Clean the sintered NdFeB after electroplating with deionized water, surface conditioning and drying to form a nickel-cobalt-based nanocomposite coating;

[0107] The prepa...

Embodiment 2

[0126] A preparation method for a nickel-cobalt-based nanocomposite coating for sintering NdFeB, comprising the following steps:

[0127] S1: Before electroplating sintered NdFeB, it is necessary to pretreat the surface of sintered NdFeB;

[0128] S2: preparing a nickel-cobalt alloy electroplating solution and a composite nanomaterial additive solution;

[0129] S3: mixing the prepared nickel-cobalt alloy electroplating solution and the composite nanomaterial additive solution according to a certain volume ratio to form a composite nickel-cobalt-based nano-plating solution;

[0130] S4: Use composite nickel-cobalt-based nano-plating solution to electroplate the surface of sintered NdFeB, and the electroplating time is controlled at 60min to 120min;

[0131] S5: Clean the sintered NdFeB after electroplating with deionized water, surface conditioning and drying to form a nickel-cobalt-based nanocomposite coating;

[0132] The preparation method of described nickel-cobalt alloy...

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Abstract

The invention belongs to the technical field of anti-corrosion electroplating on the surface of rare earth permanent magnet materials, and provides a method for preparing a nickel-cobalt-based nanocomposite coating for sintered NdFeB, including the following steps: before electroplating the sintered NdFeB, it is necessary to Pretreat the surface of NdFeB; prepare nickel-cobalt alloy plating solution and composite nanomaterial additive solution and mix them in a certain proportion to obtain composite nickel-cobalt-based nano-plating solution; use composite nickel-cobalt-based nano-plating solution to electroplate the surface of sintered NdFeB treatment, the electroplating time is controlled at 60min to 120min; the sintered NdFeB after electroplating is cleaned with deionized water, surface adjusted and dried to form a nickel-cobalt-based nano-composite coating, and the composite nickel-cobalt-based nano-plating solution provided by the invention is prepared The method is simple, the process conditions are relatively stable, the pollution is low, and industrial production is possible. The nickel-cobalt-based nanocomposite coating has good bonding force with the sintered NdFeB substrate, the coating is bright and dense, and the corrosion resistance is further improved.

Description

technical field [0001] The invention belongs to the technical field of anti-corrosion electroplating on the surface of rare earth permanent magnet materials, and relates to a preparation method of a nickel-cobalt-based nanocomposite coating for sintering NdFeB. Background technique [0002] Rare earth NdFeB permanent magnet material is the third generation rare earth permanent magnet material, which is light in weight, small in size, has extremely high magnetic energy product and coercive force, and can be widely used in various types of motors. Due to the multi-phase structure inside the NdFeB permanent magnet material, once the NdFeB-rich phase corrodes, the NdFeB main phase grains will fall off, resulting in pulverization. Therefore, the application and development of rare earth NdFeB permanent magnet materials cannot be separated from the innovation and improvement of anti-corrosion technology. [0003] For example, the application number: CN201410263544.7 discloses a n...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C25D15/00C25D3/56C25D5/36
CPCC25D15/00C25D3/562C25D5/36C25D5/627
Inventor 赵木森贺元辉白晓刚仉新功潘广麾韩雪胡蝶
Owner TIANJIN SANHUAN LUCKY NEW MATERIAL CO LTD
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