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Anti-corrosion treatment method for neodymium iron boron ferrite

A treatment method and ferrite technology, which is applied in the manufacture of permanent magnets, inductors/transformers/magnets, ion implantation plating, etc., can solve the problems of large power consumption, unfavorable energy saving, and failure to meet the requirements of environmental protection and energy saving. Achieve the effect of improving corrosion resistance and reducing environmental pollution

Inactive Publication Date: 2017-05-10
薛亚红
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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, lighted, rinsed, activated, and then rinsed to ensure that the outer surface of the NdFeB ferrite is clean and smooth.

[0016] The second is to inject tin and then anti-corrosion material on the surface of NdFeB ferrite by ion implantation; then form a metal oxide layer or coating or anti-corrosion layer on the surface of NdFeB ferrite.

[0017] The anti-corrosion material is nickel metal.

[0018] The energy used for the ion implantation is on the order of 42-45KeV.

[0019] The thickness of the co-complex layer is 15-40nm.

[0020] The injection amount of the tin is 10mg / cm 2 -20mg / cm 2 ,, the injection amount of nickel is 25mg / cm 2 -40mg / cm 2 .

[0021] Th...

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Abstract

The invention relates to an anti-corrosion treatment method for neodymium iron boron ferrite. The anti-corrosion treatment method comprises the following steps: pretreatment: removing oil from the neodymium iron boron ferrite, and performing bright dipping, bleaching, activating, re-bleaching and the like in order to keep the outer surface of the neodymium iron boron ferrite clean and smooth; injecting tin and an anti-corrosion material into the surface of the neodymium iron boron ferrite by an iron injection way; forming a metal oxide layer or a clad layer or an anti-corrosion layer on the surface of the neodymium iron boron ferrite.

Description

technical field [0001] The invention belongs to the technical field of surface treatment of magnetic materials, in particular to a treatment method for anticorrosion of 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 plati...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C23C14/48H01F41/02
CPCC23C14/48H01F41/026
Inventor 薛亚红
Owner 薛亚红
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