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Surface corrosion prevention method for NdFeB ferrite

A ferrite and NdFeB technology, applied in the field of NdFeB ferrite surface anticorrosion, can solve problems such as unfavorable energy saving, large power consumption, non-compliance with environmental protection and energy saving requirements, etc. The effect of less pollution and improved corrosion resistance

Inactive Publication Date: 2016-03-30
顾建
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

When using electroplating, the power consumption is large, which is not conducive to energy saving, and does not meet the requirements of environmental protection and energy saving

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0014] Embodiments of the present invention are specifically described below.

[0015] First, take the green body of NdFeB ferrite, and you can also choose other types or shapes of NdFeB ferrite materials according to the needs, and carry out pretreatment on the green body of NdFeB ferrite. The body is degreased, polished, rinsed, activated, and rinsed again to ensure that the outer surface of the NdFeB ferrite is clean and smooth. The cleaning agent of the prior art is used for the degreasing; the dilute nitric acid with a concentration of 3-10% is used for 50-200 seconds in the light treatment; the activation treatment is activated with 2-10% dilute sulfuric acid for 10-50 seconds.

[0016] The second is to implant the anti-corrosion material zinc into the surface of the NdFeB ferrite by ion implantation. The ion implantation method is used twice, and then passivation treatment is carried out on the surface of the NdFeB ferrite. The energy used for the first ion implantatio...

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Abstract

The invention relates to a surface corrosion prevention method for NdFeB ferrite. The surface corrosion prevention method for the NdFeB ferrite includes the steps that pre-treatment is carried out firstly, and degreasing, polishing, cleaning, activation, secondary cleaning and the like are carried out on the NdFeB ferrite in order to ensure that the outer surface of the NdFeB ferrite is clean and smooth; secondly, corrosion prevention material zinc is injected into the surface of the NdFeB ferrite in an ion implantation mode; and finally, the surface of the NdFeB ferrite is subjected to passivating treatment.

Description

technical field [0001] The invention belongs to the technical field of surface treatment of magnetic materials, in particular to a surface anticorrosion method for NdFeB ferrite. Background technique [0002] As a rare earth permanent magnet material, NdFeB ferrite has excellent magnetic properties, good machining characteristics and relatively low price, and is widely used in automation, computers, home appliances, communications and other fields. However, NdFeB ferrite materials have poor chemical stability and are easy to oxidize in the use environment, and severe chemical corrosion will occur under hot and humid conditions, which will deteriorate the magnetic properties and affect the service life of the magnet. [0003] At present, the main method to solve the corrosion problem of NdFeB ferrite is to deposit an anti-corrosion layer on the surface of the magnet. The main treatment processes include surface treatment processes such as electroplating or chemical plating, b...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C23C14/48C23C14/58
CPCC23C14/48C23C14/5846
Inventor 顾建
Owner 顾建
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