CN110148508A - A kind of rare earth permanent-magnetic material - Google Patents
A kind of rare earth permanent-magnetic material Download PDFInfo
- Publication number
- CN110148508A CN110148508A CN201910350866.8A CN201910350866A CN110148508A CN 110148508 A CN110148508 A CN 110148508A CN 201910350866 A CN201910350866 A CN 201910350866A CN 110148508 A CN110148508 A CN 110148508A
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- Prior art keywords
- magnet
- permanent
- rare earth
- magnetic material
- earth permanent
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Classifications
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F1/00—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties
- H01F1/01—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials
- H01F1/03—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity
- H01F1/032—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity of hard-magnetic materials
- H01F1/04—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity of hard-magnetic materials metals or alloys
- H01F1/047—Alloys characterised by their composition
- H01F1/053—Alloys characterised by their composition containing rare earth metals
- H01F1/055—Alloys characterised by their composition containing rare earth metals and magnetic transition metals, e.g. SmCo5
- H01F1/058—Alloys characterised by their composition containing rare earth metals and magnetic transition metals, e.g. SmCo5 and IVa elements, e.g. Gd2Fe14C
Abstract
The invention discloses a kind of permanent-magnet material, by a kind of: permanent-magnet material by one kind or two or more element combinations in Nd, Zr, Ta, Al, Zn, Sn, Ce, Fe, B and Hf, M1xM2y.Wherein: one kind or two or more combination in M1 Al, Zn, Sn, Mg, M2 are at least one of V, Si, Mn element.60≤x≤80,30≤y≤40.The heatproof intensity of magnet can be improved in addition to can increase the coercivity of permanent magnet in permanent-magnet material of the invention.
Description
Technical field
The invention belongs to rare-earth permanent-magnet material technical fields, and in particular to a kind of rare earth permanent-magnetic material.
Background technique
The rare earth permanent-magnetic material that rare earth permanent-magnetic generator uses mainly includes neodymium iron boron, neodium magnet (Neodymium
Magnet it) is also referred to as ndfeb magnet (NdFeB magnet), is the tetragonal crystal system crystalline substance formed by neodymium, iron, boron (Nd2Fe14B)
Body.Neodymium iron boron is divided into sintered NdFeB and two kinds of Agglutinate neodymium-iron-boron, and Agglutinate neodymium-iron-boron all directions are all magnetic, corrosion-resistant；It burns
Neodymium iron boron is tied because perishable, surface needs coating, generally there is zinc-plated, nickel, zinc electroplating bath, environmentally friendly nickel, ambrose alloy nickel, environmentally friendly ambrose alloy nickel etc..
Sintered NdFeB generally divides axial charging and radial magnetizing, is determined according to required working face.SinteringNd-Fe-B permanent magneticMaterial
It is divided into low-coercivity (without letter) by magnetic polarization intensity coercivity size, medium coercivity M, high-coercive force H, extra-high coercive
Power SH, ultra-high coercive force UH, high six class product of coercivity EH.Sintered Nd-Fe-B permanent magnetic material has excellent magnetic property, extensively
General to be applied to the fields such as electronics, electric machinery, medical instrument, toy, packaging, hardware machinery, space flight and aviation, more typical has forever
Magneto, loudspeaker, magnetic separator, computer disc driver, MR imaging apparatus instrument etc..It is prepared by NdFeB material
Friendly particulate metal successful development powder metallurgic method (powder metallurgy process), General Motors Corporation's successful development
Whirl spraying smelting process (melt-spinning process), can prepare ndfeb magnet.This magnet is that magnetism is only second to now
The permanent magnet and most-often used rare-earth magnet of absolute zero holmium magnet.Ndfeb magnet is widely used in electronics
Product, such as hard disk, mobile phone, earphone and battery-powered tool etc..But that there are coercivitys is bad for permanent-magnet material now,
The method for solving the problems, such as this now is addition Dy, Tb heavy rare earth element, to directly effectively promote the coercivity and temperature of magnet
Stability is spent, but since Dy, Tb atom are coupled with Fe atom anti-ferromagnetism, will cause the fast prompt drop of magnet remanence and magnetic energy product
Low, furthermore Dy, Tb element abundance in rare earth resources are low and expensive, and DIRECT ALLOYING will lead to neodymium iron boron magnetic body cost
It is significantly increased.
Application requirement magnet of the NdFeB permanent magnetism in fields such as motors not only has sufficiently high coercivity and magnetic energy product, also
Demanding thermal stability.It is also very real that material cost is reduced while improving the comprehensive magnetic energy of NdFeB magnet
Problem.Therefore, improving material cost performance by optimizing components, microstructure regulation and new process development is NdFeB permanent magnetism
Main direction of studying.
The present invention is mainly reduced the content of rare earth of NdFeB magnet by crystal ingedient and structure regulating and improves coercive
Power, can effectively smooth and cleaning crystal boundary with heat treatment process by adjusting being sintered with optimization；By adding microelement
It is enough that Grain-boundary Junctions can be regulated and controled；And Dy or other rare earths can be diffused to by crystal boundary using grain boundary decision new technology.These techniques can
While reducing NdFeB permanent magnetism content of rare earth, to effectively improve material coercivity and comprehensive hard magnetic property.
Summary of the invention
The main object of the present invention is to form the rare earth permanent magnet material that even compact, thickness are adjustable, at low cost, coercivity is high
Material.
In order to solve the above problem, provide a kind of rare earth permanent-magnetic material by: Nd, Zr, Ta, Al, Zn, Sn, Ce, Fe, B and Hf,
M1xM2yIn one kind or two or more element combinations；Wherein: one kind or two or more combination, M2 are in M1 Al, Zn, Sn, Mg
V, at least one of Si, Mn element wherein 60≤x≤80,30≤y≤40.
Specific embodiment
A kind of permanent-magnet material is by Nd, Zr, Ta, Al, Zn, Sn, Ce, Fe, B and Hf, M1xM2yIn one kind or two or more member
Element combination；Wherein: one kind or two or more combination in M1 Al, Zn, Sn, Mg, M2 are at least one of V, Si, Mn element；
60≤x≤80,30≤y≤40.
Preferred X be 80 perhaps 60 Y be 30 or 40.
Claims (3)
1. a kind of permanent-magnet material, it is characterised in that by: Nd, Zr, Ta, Al, Zn, Sn, Ce, Fe, B and Hf, M1xM2yIn a kind or 2 kinds
Above element combinations.
2. permanent-magnet material as described in claim 1, in which: one kind or two or more combination, M2 are in M1 Al, Zn, Sn, Mg
V, at least one of Si, Mn element.
3. permanent-magnet material as described in claim 1: wherein 60≤x≤80,30≤y≤40.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910350866.8A CN110148508A (en) | 2019-04-28 | 2019-04-28 | A kind of rare earth permanent-magnetic material |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910350866.8A CN110148508A (en) | 2019-04-28 | 2019-04-28 | A kind of rare earth permanent-magnetic material |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110148508A true CN110148508A (en) | 2019-08-20 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910350866.8A Pending CN110148508A (en) | 2019-04-28 | 2019-04-28 | A kind of rare earth permanent-magnetic material |
Country Status (1)
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| CN (1) | CN110148508A (en) |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1033018A (en) * | 1987-08-19 | 1989-05-24 | 三菱金属株式会社 | Rare-earth-iron-boron magnet powder and preparation method thereof |
| CN1036658A (en) * | 1989-03-22 | 1989-10-25 | 住友特殊金属株式会社 | Produce method of permanent magnet and products thereof |
| WO2012102497A2 (en) * | 2011-01-25 | 2012-08-02 | Industry-University Cooperation Foundation, Hanyang University | R-fe-b sintered magnet with enhanced mechanical properties and method for producing the same |
| CN103495733A (en) * | 2013-10-18 | 2014-01-08 | 北京科技大学 | Method for preparing sintered Nd-Fe-B permanent magnet material with intergranular Nd-rich phase replaced |
| CN108597708A (en) * | 2018-04-12 | 2018-09-28 | 江苏柯普斯磁业有限公司 | A kind of high performance sintered neodymium-iron-boron and manufacturing method |
| CN109585113A (en) * | 2018-11-30 | 2019-04-05 | 宁波韵升股份有限公司 | A kind of preparation method of Sintered NdFeB magnet |
| CN110111962A (en) * | 2019-04-28 | 2019-08-09 | 深圳市吉胜华力科技有限公司 | A kind of rare earth permanent-magnetic material |
-
2019
- 2019-04-28 CN CN201910350866.8A patent/CN110148508A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1033018A (en) * | 1987-08-19 | 1989-05-24 | 三菱金属株式会社 | Rare-earth-iron-boron magnet powder and preparation method thereof |
| CN1036658A (en) * | 1989-03-22 | 1989-10-25 | 住友特殊金属株式会社 | Produce method of permanent magnet and products thereof |
| WO2012102497A2 (en) * | 2011-01-25 | 2012-08-02 | Industry-University Cooperation Foundation, Hanyang University | R-fe-b sintered magnet with enhanced mechanical properties and method for producing the same |
| CN103495733A (en) * | 2013-10-18 | 2014-01-08 | 北京科技大学 | Method for preparing sintered Nd-Fe-B permanent magnet material with intergranular Nd-rich phase replaced |
| CN108597708A (en) * | 2018-04-12 | 2018-09-28 | 江苏柯普斯磁业有限公司 | A kind of high performance sintered neodymium-iron-boron and manufacturing method |
| CN109585113A (en) * | 2018-11-30 | 2019-04-05 | 宁波韵升股份有限公司 | A kind of preparation method of Sintered NdFeB magnet |
| CN110111962A (en) * | 2019-04-28 | 2019-08-09 | 深圳市吉胜华力科技有限公司 | A kind of rare earth permanent-magnetic material |
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Application publication date: 20190820 |
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