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Surface anti-corrosion treatment method for neodymium-iron-boron ferrite

A processing method and ferrite technology, which are applied in ion implantation plating, metal material coating process, coating and other directions, can solve the problems of large power consumption, unfavorable energy saving, not meeting environmental protection and energy saving requirements, etc. Corrosion resistance, low environmental pollution effect

Inactive Publication Date: 2017-04-26
虞海盈
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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

[0013] Embodiments of the present invention are specifically described below.

[0014] 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.

[0015] The second is to inject anti-corrosion material carbon nitride 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.

[0016] The energy used for the ion implantation is on the order of 42-50KeV.

[0017] The thickness of the co-extension layer is 20-40nm.

[0018] The injection amount is 30mg / cm 2 -45mg / cm 2 .

[0019] The ion implantation energy of the present invention is on the order of 42-45KeV; the specific implantation energy is select...

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PUM

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Abstract

The invention relates to a surface anti-corrosion treatment method for a neodymium-iron-boron ferrite. The surface anti-corrosion treatment method comprises the following steps: firstly, carrying out pre-treatment, and carrying out oil removal, bright dipping, rinsing, activation, rinsing and other treatment on the neodymium-iron-boron ferrite, so as to ensure the clean and smooth outer surface of the neodymium-iron-boron ferrite; secondly, injecting an anti-corrosion material carbon nitride in the surface of the neodymium-iron-boron ferrite in a manner of ion injection; and thirdly, forming a metal oxide layer or a cladding 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 surface 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 chemic...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C23C14/48C23C14/06
CPCC23C14/48C23C14/0658
Inventor 虞海盈
Owner 虞海盈