CN108305739A - A kind of erosion-resisting Nd-Fe-B permanent magnetic coating material - Google Patents
A kind of erosion-resisting Nd-Fe-B permanent magnetic coating material Download PDFInfo
- Publication number
- CN108305739A CN108305739A CN201711338396.0A CN201711338396A CN108305739A CN 108305739 A CN108305739 A CN 108305739A CN 201711338396 A CN201711338396 A CN 201711338396A CN 108305739 A CN108305739 A CN 108305739A
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- CN
- China
- Prior art keywords
- coating
- iron boron
- neodymium iron
- magnet
- magnetic body
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F7/00—Magnets
- H01F7/02—Permanent magnets [PM]
- H01F7/0205—Magnetic circuits with PM in general
- H01F7/021—Construction of PM
-
- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C28/00—Coating for obtaining at least two superposed coatings either by methods not provided for in a single one of groups C23C2/00 - C23C26/00 or by combinations of methods provided for in subclasses C23C and C25C or C25D
- C23C28/30—Coatings combining at least one metallic layer and at least one inorganic non-metallic layer
- C23C28/32—Coatings combining at least one metallic layer and at least one inorganic non-metallic layer including at least one pure metallic layer
- C23C28/322—Coatings combining at least one metallic layer and at least one inorganic non-metallic layer including at least one pure metallic layer only coatings of metal elements only
-
- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C28/00—Coating for obtaining at least two superposed coatings either by methods not provided for in a single one of groups C23C2/00 - C23C26/00 or by combinations of methods provided for in subclasses C23C and C25C or C25D
- C23C28/30—Coatings combining at least one metallic layer and at least one inorganic non-metallic layer
- C23C28/34—Coatings combining at least one metallic layer and at least one inorganic non-metallic layer including at least one inorganic non-metallic material layer, e.g. metal carbide, nitride, boride, silicide layer and their mixtures, enamels, phosphates and sulphates
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F7/00—Magnets
- H01F7/02—Permanent magnets [PM]
- H01F7/0205—Magnetic circuits with PM in general
- H01F7/0221—Mounting means for PM, supporting, coating, encapsulating PM
Abstract
The invention discloses a kind of erosion-resisting Nd-Fe-B permanent magnetic coating materials in magnet technology field,Including neodymium iron boron magnetic body,The inner cavity left and right side of the neodymium iron boron magnetic body is both provided with through-hole,The outer wall of the neodymium iron boron magnetic body is provided with neodymium iron boron magnetic body coating,The outer wall of the neodymium iron boron magnetic body coating is provided with nickel-phosphorus alloy coating,The outer wall of the nickel-phosphorus alloy coating is provided with phosphate layer,The outer wall of the phosphate layer is provided with corrosion-resistant finishes,The corrosion-resistant finishes includes galvanizing coating,The bottom of the galvanizing coating is provided with chemical nickel plating coating,The bottom of the chemical nickel plating coating is provided with epoxy anticorrosive coating,So that magnet matrix possesses high magnetic property,With good machining property,And magnetic property is stablized,So that the corrosion resistance of entire magnet is more preferable,Corrosion resistance is also added while the magnetism for ensureing entire magnet,So that magnet can be used in adverse circumstances.
Description
Technical field
The present invention relates to magnet technology field, specially a kind of erosion-resisting Nd-Fe-B permanent magnetic coating material.
Background technology
Nd-Fe-B rare-earth permanent magnet is the third generation rare earth permanent-magnetic material after samarium cobalt rare earth permanent magnet, and there is high remanent magnetism, height to rectify
Stupid power and high energy product.The rapid development of Nd-Fe-B permanent magnet material is greatly promoted the progress of science and technology.As magnetic work(
Energy material is widely used in the crowds such as electronic product, auto industry, Medical Devices, energy traffic, magneto, wind-power electricity generation
It is multi-field.There is no protective layer outside some magnets, usually it is exposed in a humid environment, magnet is easy to be corroded, and often occurs
Rust staining, to influence magnet performance.Such as Chinese Patent Application No. is a kind of 201220490217.1 motor sintered NdFeBs
Magnet, including magnet body, the magnet body are made of sintered neodymium iron boron material, and the magnet body is sector structure, institute
The both sides for stating the outer end of magnet body are equipped with fixed groove.The beneficial effects of the present invention are：Due to the outer end of magnet body
Both sides greatly reduce the vibration of motor equipped with fixed groove so that the gap between adjacent magnets ontology is relatively uniform
And noise.And magnet body is made of sintered neodymium iron boron material, to possess high magnetic property, has machinery well
Processing performance, and magnetic property is stablized, but its corrosion resistance is poor, such as Chinese Patent Application No. is 200100260143.5
A kind of magnet is hollow cavity structure, and hollow cavity is put together by multiple small magnets with opposite pole end face, Suo You little
One like pole end face of magnet is tightly engaged into the outer surface for constituting hollow cavity, another like pole of all small magnets
End face is located at the inside of hollow cavity.The present invention shows the feature of single magnetic pole, can meet people to single magnetic in various aspects
The demand of pole magnetic bodies, but its corrosion resistance is poor, in view of problem mentioned above, the present invention designs a kind of erosion-resisting
Nd-Fe-B permanent magnetic coating material, it is mentioned above to solve the problems, such as.
Invention content
The purpose of the present invention is to provide a kind of erosion-resisting Nd-Fe-B permanent magnetic coating materials, to solve above-mentioned background technology
The poor problem of the Corrosion Protection of middle proposition.
To achieve the above object, the present invention provides the following technical solutions：A kind of erosion-resisting Nd-Fe-B permanent magnetic coating material,
Including neodymium iron boron magnetic body, the inner cavity left and right side of the neodymium iron boron magnetic body is both provided with through-hole, the neodymium iron boron magnetic body it is outer
Wall is provided with neodymium iron boron magnetic body coating, and the outer wall of the neodymium iron boron magnetic body coating is provided with nickel-phosphorus alloy coating, and the nickel phosphorus closes
The outer wall of gold plate is provided with phosphate layer, and the outer wall of the phosphate layer is provided with corrosion-resistant finishes, the corrosion-resistant finishes
Including galvanizing coating, the bottom of the galvanizing coating is provided with chemical nickel plating coating, the bottom setting of the chemical nickel plating coating
There is epoxy anticorrosive coating.
Preferably, the through-hole is provided with two groups, and the structure of two groups of through-holes is identical.
Preferably, the neodymium iron boron magnetic body coating is nickel phosphorous oxides composite deposite.
Preferably, the neodymium iron boron magnetic body is elliptical shape.
Compared with prior art, the beneficial effects of the invention are as follows：This kind of etch-proof Nd-Fe-B permanent magnet surface coating material,
Neodymium iron boron magnetic body is made of NdFeB material so that magnet matrix possesses high magnetic property, has mechanical well add
Work performance, and magnetic property is stablized, and by the way that nickel-phosphorus alloy coating is arranged on the surface of neodymium iron boron magnetic body coating, phosphate layer can be protected
The stability of magnet magnetism is demonstrate,proved, there is high weather-resistant property, and corrosion-resistant finishes is set on phosphate layer surface so that whole
The corrosion resistance of a magnet is more preferable, and the magnetism for ensureing entire magnet while also adds corrosion resistance, so that this
The magnet of invention can be used in adverse circumstances.
Description of the drawings
Fig. 1 is schematic structural view of the invention；
Fig. 2 is corrosion-resistant finishes structural schematic diagram of the present invention.
In figure：1 neodymium iron boron magnetic body, 2 through-holes, 3 neodymium iron boron magnetic body coating, 4 nickel-phosphorus alloy coatings, 5 phosphate layers, 6 corrosion resistants
Erosion resisting coating, 7 galvanizing coatings, 8 chemical nickel plating coatings, 9 epoxy anticorrosive coatings.
Specific implementation mode
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation describes, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts every other
Embodiment shall fall within the protection scope of the present invention.
- 2 are please referred to Fig.1, the present invention provides a kind of technical solution：A kind of erosion-resisting Nd-Fe-B permanent magnetic coating material, packet
Neodymium iron boron magnetic body 1 is included, the inner cavity left and right side of the neodymium iron boron magnetic body 1 is both provided with through-hole 2, the neodymium iron boron magnetic body 1
Outer wall is provided with neodymium iron boron magnetic body coating 3, and the outer wall of the neodymium iron boron magnetic body coating 3 is provided with nickel-phosphorus alloy coating 4, the nickel
The outer wall of phosphor alloy coating 4 is provided with phosphate layer 5, and the outer wall of the phosphate layer 5 is provided with corrosion-resistant finishes 6, described resistance to
Corrosion resistant coating 6 includes galvanizing coating 7, and the bottom of the galvanizing coating 7 is provided with chemical nickel plating coating 8, and the chemical nickel plating applies
The bottom of layer 8 is provided with epoxy anticorrosive coating 9.
Wherein, the through-hole 2 is provided with two groups, and the structure of two groups of through-holes 2 is identical, the magnetism of enhancing magnet, the neodymium
Iron boron magnet coating 3 is nickel phosphorous oxides composite deposite, and it is ellipse to have good Corrosion Protection, the neodymium iron boron magnetic body 1
Shape shape, is easily installed, good appearance.
Operation principle：Neodymium iron boron magnetic body 1 is made of NdFeB material so that 1 matrix of neodymium iron boron magnetic body possesses high
Magnetic property, have good machining property, and magnetic property stablize, by being set on the surface of neodymium iron boron magnetic body coating 3
Nickel-phosphorus alloy coating 4 is set, phosphate layer 5 can guarantee the stability of magnet magnetism, have high weather-resistant property, and in phosphoric acid
Corrosion-resistant finishes 6 is arranged in 5 surface of salt film, corrosion-resistant finishes 6 by galvanizing coating 7, chemical nickel plating coating 8 and epoxy anticorrosive coating 9,
So that the corrosion resistance of entire neodymium iron boron magnetic body 1 is more preferable, the magnetism for ensureing entire neodymium iron boron magnetic body 1 while, also adds resistance to
Corrosive nature, so that the neodymium iron boron magnetic body 1 of the present invention can be used in adverse circumstances.
It although an embodiment of the present invention has been shown and described, for the ordinary skill in the art, can be with
Understanding without departing from the principles and spirit of the present invention can carry out these embodiments a variety of variations, modification, replace
And modification, the scope of the present invention is defined by the appended.
Claims (4)
1. a kind of erosion-resisting Nd-Fe-B permanent magnetic coating material, including neodymium iron boron magnetic body (1), it is characterised in that：The neodymium iron boron
The inner cavity left and right side of magnet (1) is both provided with through-hole (2), and the outer wall of the neodymium iron boron magnetic body (1) is provided with neodymium-iron-boron
The outer wall of body coating (3), the neodymium iron boron magnetic body coating (3) is provided with nickel-phosphorus alloy coating (4), the nickel-phosphorus alloy coating
(4) outer wall is provided with phosphate layer (5), and the outer wall of the phosphate layer (5) is provided with corrosion-resistant finishes (6), the corrosion resistant
Erosion resisting coating (6) includes galvanizing coating (7), and the bottom of the galvanizing coating (7) is provided with chemical nickel plating coating (8), the chemistry
The bottom of plating nickel coating (8) is provided with epoxy anticorrosive coating (9).
2. a kind of erosion-resisting Nd-Fe-B permanent magnetic coating material according to claim 1, it is characterised in that：The through-hole
(2) two groups are provided with, and the structure of two groups of through-holes (2) is identical.
3. a kind of erosion-resisting Nd-Fe-B permanent magnetic coating material according to claim 1, it is characterised in that：The neodymium iron boron
Magnet coating (3) is nickel phosphorous oxides composite deposite.
4. a kind of erosion-resisting Nd-Fe-B permanent magnetic coating material according to claim 1, it is characterised in that：The neodymium iron boron
Magnet (1) is elliptical shape.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711338396.0A CN108305739A (en) | 2017-12-14 | 2017-12-14 | A kind of erosion-resisting Nd-Fe-B permanent magnetic coating material |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711338396.0A CN108305739A (en) | 2017-12-14 | 2017-12-14 | A kind of erosion-resisting Nd-Fe-B permanent magnetic coating material |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108305739A true CN108305739A (en) | 2018-07-20 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711338396.0A Pending CN108305739A (en) | 2017-12-14 | 2017-12-14 | A kind of erosion-resisting Nd-Fe-B permanent magnetic coating material |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108305739A (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5067990A (en) * | 1988-12-22 | 1991-11-26 | Hitachi Metals International, Ltd. | Method of applying phosphate conversion coatings to Fe-R-B substrates, and Fe-R-B articles having a phosphate conversion coating thereon |
| CN1900361A (en) * | 2006-07-14 | 2007-01-24 | 西南大学 | Process for preparing neodymium-iron-boron permanent magnetic material surface gradient function coating layer |
| CN202443819U (en) * | 2012-03-01 | 2012-09-19 | 湖南航天工业总公司 | Neodymium-iron-boron magnetic body with composite coating |
| CN202771884U (en) * | 2012-09-24 | 2013-03-06 | 宁波合盛磁业有限公司 | Color-zinc-plated sintered nd-fe-b magnet |
| CN106783131A (en) * | 2016-12-23 | 2017-05-31 | 宁波韵升股份有限公司 | A kind of preparation method of sintered NdFeB thin slice magnet |
-
2017
- 2017-12-14 CN CN201711338396.0A patent/CN108305739A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5067990A (en) * | 1988-12-22 | 1991-11-26 | Hitachi Metals International, Ltd. | Method of applying phosphate conversion coatings to Fe-R-B substrates, and Fe-R-B articles having a phosphate conversion coating thereon |
| CN1900361A (en) * | 2006-07-14 | 2007-01-24 | 西南大学 | Process for preparing neodymium-iron-boron permanent magnetic material surface gradient function coating layer |
| CN202443819U (en) * | 2012-03-01 | 2012-09-19 | 湖南航天工业总公司 | Neodymium-iron-boron magnetic body with composite coating |
| CN202771884U (en) * | 2012-09-24 | 2013-03-06 | 宁波合盛磁业有限公司 | Color-zinc-plated sintered nd-fe-b magnet |
| CN106783131A (en) * | 2016-12-23 | 2017-05-31 | 宁波韵升股份有限公司 | A kind of preparation method of sintered NdFeB thin slice magnet |
Non-Patent Citations (1)
| Title |
|---|
| 周寿增等: "《烧结钕铁硼永磁材料与技术》", 30 September 2011, 冶金工业出版社 * |
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Application publication date: 20180720 |
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