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Novel neodymium iron boron magnet

A technology of NdFeB magnets, applied in the direction of magnetic objects, magnetic materials, permanent magnets, etc., can solve the problems of rust spots, no protective layer, and NdFeB magnets are easy to be corroded, and achieve the effect of improving corrosion resistance

Inactive Publication Date: 2016-02-03
杨挺
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] At present, the existing NdFeB magnets have no protective layer outside and are often exposed in a humid environment. NdFeB magnets are easily corroded and rust spots often appear, which affects the performance of the magnet.

Method used

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  • Novel neodymium iron boron magnet

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Embodiment

[0012] Such as figure 1 As shown, the novel NdFeB magnet provided in this embodiment includes an NdFeB substrate 1, and the outer surface of the NdFeB substrate 1 is sequentially provided with an electrical insulating coating 2, a corrosion-resistant layer 3 and a galvanized layer from the inside to the outside. 4. The electrical insulating coating 2 is a nano-silicon nitride coating with a thickness of 5 μm to 10 μm, and the corrosion-resistant layer 3 is an epoxy resin coating. The cross section of the NdFeB substrate 1 is trapezoidal. The thickness of the epoxy resin coating is 30 μm˜50 μm.

[0013] In order to obtain better dispersion performance of the nano-silicon nitride in the coating, thereby increasing the coating rate, the particle size of the nano-silicon nitride is 30nm-40nm.

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Abstract

The invention discloses a novel neodymium iron boron magnet. The novel neodymium iron boron magnet comprises a neodymium iron boron substrate, wherein the outer surface of the neodymium iron boron substrate is sequentially provided with an electric insulation coating, an anticorrosion layer and a galvanized layer from inside to outside, wherein the electric insulation coating is a nano silicon nitride coating, the thickness of the electric insulation coating is 5 to 10 micrometers, and the anticorrosion layer is an epoxy resin coating. The thickness of the epoxy resin coating is 30 to 50 micrometers. The novel neodymium iron boron magnet has technical effects that the outer surface of the neodymium iron boron substrate is sequentially provided with the electric insulation coating, the anticorrosion layer and the galvanized layer from inside to outside, by adopting the nano silicon nitride, the novel neodymium iron boron magnet is insulated to electricity, the epoxy resin coating improves the corrosion resistance, and the novel neodymium ion boron magnet which can be insulated to the electricity and also can resist the corrosion can be obtained.

Description

technical field [0001] The invention relates to a magnetic material, especially a novel neodymium-iron-boron magnet. Background technique [0002] At present, the existing NdFeB magnets have no protective layer outside and are often exposed in humid environments. NdFeB magnets are easily corroded and rust spots often appear, which affects the performance of the magnets. In addition, some NdFeB magnets need to be used in severe corrosive environments, and there are even occasions when the surface of the magnets is required to be electrically insulated in some environments. Therefore, the protection of NdFeB magnets is essential. Contents of the invention [0003] The object of the present invention is to provide a novel neodymium-iron-boron magnet capable of both electrical insulation and corrosion resistance in order to solve the above-mentioned deficiencies in the prior art. [0004] In order to achieve the above object, the novel NdFeB magnet designed by the present in...

Claims

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Application Information

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IPC IPC(8): H01F1/057H01F7/02
Inventor 杨挺
Owner 杨挺
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