CN203228469U - NdFeB magnet with double protecting coatings - Google Patents
NdFeB magnet with double protecting coatings Download PDFInfo
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- CN203228469U CN203228469U CN 201320004994 CN201320004994U CN203228469U CN 203228469 U CN203228469 U CN 203228469U CN 201320004994 CN201320004994 CN 201320004994 CN 201320004994 U CN201320004994 U CN 201320004994U CN 203228469 U CN203228469 U CN 203228469U
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- ndfeb magnet
- magnet
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- nickel coating
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Abstract
The utility model relates to an NdFeB magnet with double protecting coatings. The NdFeB magnet with the double protecting coatings comprises an NdFeB magnet (1), a nickel coating (2) and an enhanced protective coating (3), and is characterized in that the NdFeB magnet (1) is a plate-shaped magnet base material; the nickel coating (2) is coated on the surface of the NdFeB magnet (1) through electroplating processing; and the enhanced protective coating (3) is polyurethane resin, epoxy resin, organic silicon resin or combination thereof and is coated on the surface of the nickel coating (2). The NdFeB magnet with the double protecting coatings has the advantages that the service life is prolonged; the operating reliability is improved; the neutral salt mist resistance of the coatings is greatly improved; the corrosion resistance of the NdFeB magnet is improved; and the application of the NdFeB magnet to severe marine environment weather is enlarged.
Description
Technical field
The utility model relates to a kind of NdFeB magnet, specifically, is a kind of NdFeB magnet with double shielding coating.
Background technology
Sintered Nd Fe B is the strongest permanent-magnet material of magnetic up to now, the magnetic characteristic, favorable mechanical processing characteristics and the relative cheap price that rely on its excellence, be widely used in fields such as numerous areas such as electronics, electromechanics, instrument and medical treatment, be with fastest developing speed in the world today, the permanent-magnet material that market prospects are best.But because the NdFeB magnet has rare earth element nd, chemism is strong, and corrosion-resistant is easily oxidized, causes its magnetic property to reduce, and has a strong impact on its range of application.In order to improve anti-oxidant, the decay resistance of NdFeB magnet surface, mainly by being carried out electroplating processes, magnet surface improves its Corrosion Protection at present, and namely stop air, moisture or other corrosive substance to permeate to improve the resistance to corrosion of magnet with coating.But because the limitation of electroplating technology, inevitably always there is hole more or less in electroplated coating, when being in bad working environment, moisture, salt fog can contact with the magnet matrix by these holes, thereby corrosion NdFeB magnet, and the neodymium iron boron magnetic body after the electroplating processes generally also can only stand 100 hours with interior anti-neutral salt spray test, can't prolonged application in bad working environment such as damp and hot, highly corrosive.
Therefore the known NdFeB magnet that has protectiveness coating exists above-mentioned all inconvenience and problem.
Summary of the invention
The purpose of this utility model is to propose a kind of NdFeB magnet with double shielding coating of anti-neutral salt spray corrosive nature.
For achieving the above object, technical solution of the present utility model is:
A kind of NdFeB magnet with double shielding coating comprises the NdFeB magnet, and nickel plating coating and enhancing protective finish is characterized in that:
Described NdFeB magnet is the plate shaped, magnets base material;
Described nickel coating is to be coated on the NdFeB magnet surface through electroplating processes;
Described enhancing protective finish is polyurethane resin, epoxy resin, organic siliconresin or its combination, is coated on the described nickel coating surface.
NdFeB magnet with double shielding coating of the present utility model can also be further achieved by the following technical measures.
Aforesaid NdFeB magnet with double shielding coating, the thickness of wherein said nickel coating is 5～25um.
Aforesaid NdFeB magnet with double shielding coating, the thickness of wherein said enhancing protective finish is 5～15um.
After adopting technique scheme, the NdFeB magnet with double shielding coating of the present utility model has the following advantages:
1, prolong service life, operational reliability improves, and increases substantially the anti-neutral salt spray performance of coating;
2, improve the corrosion resistance of NdFeB magnet, enlarged its application in the comparatively abominable marine environment weather of environment.
Description of drawings
Fig. 1 is the NdFeB magnet structure schematic diagram with double shielding coating of the utility model embodiment.
Among the figure: the 1NdFeB magnet, 2 nickel coatings, 3 strengthen protective finish.
The specific embodiment
Below in conjunction with embodiment and accompanying drawing thereof the utility model is illustrated further.
Embodiment 1
Fig. 1 is the NdFeB magnet structure schematic diagram with double shielding coating of the utility model embodiment.
Provide a tabular 40*30*15mm motor with sintered Nd Fe B magnet base material 1, it is carried out preliminary treatment, comprise oil removing, rust cleaning, polishing, cleaning etc., electroplate on one deck nickel coating 2 to NdFeB magnets 1 surface the oven dry back, and nickel coating 2 thickness are 15um; Continue oven dry then, spray one deck epoxy resin again and strengthen protective finish 3 on the surface of nickel coating 2, it is 10um that epoxy resin strengthens protective finish 3 thickness, solidifies the NdFeB magnet that oven dry can obtain corrosion-resistant enhancing.
Above embodiment is only for the usefulness that the utility model is described, but not to restriction of the present utility model, person skilled in the relevant technique under the situation that does not break away from spirit and scope of the present utility model, can also be made various conversion or variation.Therefore, all technical schemes that are equal to also should belong to category of the present utility model, should be limited by each claim.
Claims (3)
1. the NdFeB magnet with double shielding coating comprises NdFeB magnet (1), and nickel coating (2) and enhancing protective finish (3) is characterized in that:
Described NdFeB magnet (1) is the plate shaped, magnets base material;
Described nickel coating (2) is to be coated on NdFeB magnet (1) surface through electroplating processes;
Described enhancing protective finish (3) is polyurethane resin, epoxy resin, organic siliconresin or its combination, is coated on described nickel coating (2) surface.
2. the NdFeB magnet with double shielding coating as claimed in claim 1 is characterized in that, the thickness of described nickel coating (2) is 5～25um.
3. the NdFeB magnet with double shielding coating as claimed in claim 1 is characterized in that, the thickness of described enhancing protective finish (3) is 5～15um.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320004994 CN203228469U (en) | 2013-01-06 | 2013-01-06 | NdFeB magnet with double protecting coatings |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320004994 CN203228469U (en) | 2013-01-06 | 2013-01-06 | NdFeB magnet with double protecting coatings |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203228469U true CN203228469U (en) | 2013-10-09 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320004994 Expired - Fee Related CN203228469U (en) | 2013-01-06 | 2013-01-06 | NdFeB magnet with double protecting coatings |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203228469U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107196424A (en) * | 2017-05-16 | 2017-09-22 | 浙江爱德利科技股份有限公司 | A kind of magnetic material |
| CN108193243A (en) * | 2017-12-27 | 2018-06-22 | 天津深之蓝海洋设备科技有限公司 | Anti-corrosion method, anti-corrosion magnet and the propeller for including this anti-corrosion magnet |
| CN109023271A (en) * | 2017-06-12 | 2018-12-18 | 江苏东瑞磁材科技有限公司 | A kind of protective coating and preparation method thereof of superelevation corrosion-resistant R-Fe-B material |
-
2013
- 2013-01-06 CN CN 201320004994 patent/CN203228469U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107196424A (en) * | 2017-05-16 | 2017-09-22 | 浙江爱德利科技股份有限公司 | A kind of magnetic material |
| CN109023271A (en) * | 2017-06-12 | 2018-12-18 | 江苏东瑞磁材科技有限公司 | A kind of protective coating and preparation method thereof of superelevation corrosion-resistant R-Fe-B material |
| CN108193243A (en) * | 2017-12-27 | 2018-06-22 | 天津深之蓝海洋设备科技有限公司 | Anti-corrosion method, anti-corrosion magnet and the propeller for including this anti-corrosion magnet |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20131009 Termination date: 20140106 |