CN106782971A - A kind of NdFeB material and preparation method thereof - Google Patents
A kind of NdFeB material and preparation method thereof Download PDFInfo
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- CN106782971A CN106782971A CN201611100400.5A CN201611100400A CN106782971A CN 106782971 A CN106782971 A CN 106782971A CN 201611100400 A CN201611100400 A CN 201611100400A CN 106782971 A CN106782971 A CN 106782971A
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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
- H01F1/057—Alloys characterised by their composition containing rare earth metals and magnetic transition metals, e.g. SmCo5 and IIIa elements, e.g. Nd2Fe14B
- H01F1/0571—Alloys characterised by their composition containing rare earth metals and magnetic transition metals, e.g. SmCo5 and IIIa elements, e.g. Nd2Fe14B in the form of particles, e.g. rapid quenched powders or ribbon flakes
- H01F1/0575—Alloys characterised by their composition containing rare earth metals and magnetic transition metals, e.g. SmCo5 and IIIa elements, e.g. Nd2Fe14B in the form of particles, e.g. rapid quenched powders or ribbon flakes pressed, sintered or bonded together
- H01F1/0576—Alloys characterised by their composition containing rare earth metals and magnetic transition metals, e.g. SmCo5 and IIIa elements, e.g. Nd2Fe14B in the form of particles, e.g. rapid quenched powders or ribbon flakes pressed, sintered or bonded together pressed, e.g. hot working
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F41/00—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties
- H01F41/02—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties for manufacturing cores, coils, or magnets
- H01F41/0253—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties for manufacturing cores, coils, or magnets for manufacturing permanent magnets
- H01F41/0266—Moulding; Pressing
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- Inorganic Chemistry (AREA)
- Hard Magnetic Materials (AREA)
Abstract
A kind of NdFeB material and preparation method thereof, the material is made up of two kinds of alloys of A phases and B phases, and wherein A phase alloys composition is RxFe1‑x‑y‑zByMz, wherein, R is one or more in La, Ce, Pr, Nd, Dy, Ho, Tb, and M is one or more in Al, Cu, Co, Nb, Ga, Zr, x=0.1~0.32, y=0.008~0.01, z=0.001~0.1；B phase alloys are RaFe1‑a‑bMb, wherein R is one or more in La, Ce, Pr, Nd, Dy, Ho, Tb, and M is one or more in Al, Cu, Co, Nb, Ga, Zr, a=0.2~0.8, b=0.001~0.1.Present invention additionally comprises the preparation method of NdFeB material.The present invention has the advantages of reducing production cost, improve production efficiency.
Description
Technical field
The present invention relates to a kind of NdFeB material and preparation method thereof.
Background technology
The technique for preparing densification NdFeB material high has two kinds, and one kind is powder metallurgical technique, prepares sintered NdFeB magnetic
Body（It is anisotropy magnet）, another kind is hot pressing/thermal deformation technique, prepares hot pressing/thermal deformation neodymium iron boron magnetic body（Including it is each to
The same sex and anisotropy magnet）.
In recent years, the sintered NdFeB industry fast development for being prepared using powder metallurgical technique, annual production breaks through 100,000 tons,
With conventional rare earth material praseodymium neodymium（Or neodymium）, dysprosium iron（Or dysprosium）, the consumption such as terbium increase, cause its price Continued, promote
The cost of sintered Nd-Fe-B permanent magnetic material is improved.The price of current praseodymium neodymium is 30~400,000 yuan/ton, and the price of dysprosium iron is 1,300,000
Yuan/ton or so, the price of terbium is 340~3,700,000 yuan/ton.And the price of the more rich cerium of reserves is 3~40,000 yuan/ton, holmium iron
Price be 26~280,000 yuan/ton.As can be seen here, the price of cerium is only 1/10th of praseodymium neodymium, and holmium is relative to dysprosium, terbium also just
It is suitable a lot.Therefore, praseodymium neodymium, holmium/holmium iron part are substituted using cerium part and substitutes dysprosium iron/dysprosium, sintering neodymium iron can be substantially reduced
The cost of B permanent magnetic material.
For reduces cost, people start gradually to pay attention to hot pressing/thermal deformation technique, and annual production starts to break through 0.15 ten thousand tons.
Anisotropic neodymium iron boron magnetic body is prepared using the technique, selection is content of rare earth relatively low fast quenching neodymium iron boron strip or magnetic,
The crystal preferred orientation induced by slowly and significantly hot compression deformation, because hot pressing temperature is low, can not form similar powder
Structure and coercivity mechanism as last metallurgical technology, and sufficiently high coercive must be formed in alloying pellet in advance
Power.And powder metallurgical technique is then the presence of liquid-phase sintering in sintering process, the metallographic of homogeneous liquid phase is formed around principal phase
Structure, to improve coercivity.
The content of the invention
The technical problems to be solved by the invention are to provide one kind and can reduce production cost, the neodymium iron of improve production efficiency
Boron material and preparation method thereof.
The technical solution adopted for the present invention to solve the technical problems is：
The NdFeB material of the present invention, is made up of two kinds of alloys of A phases and B phases, and A phase alloys composition is RxFe1-x-y-zByMz, wherein,
R is one or more in La, Ce, Pr, Nd, Dy, Ho, Tb, and M is one or more in Al, Cu, Co, Nb, Ga, Zr, x=
0.1~0.32, y=0.008~0.01, z=0.001~0.1；B phase alloys are RaFe1-a-bMb, wherein R be La, Ce, Pr, Nd,
One or more in Dy, Ho, Tb, M is one or more in Al, Cu, Co, Nb, Ga, Zr, a=0.2~0.8, b=0.001
~0.1；A alloys are 100 with the mass ratio of B alloys:0.5~10（Preferred proportion 100:1~5）.
The preparation method of the NdFeB material of the present invention, comprises the following steps：
1）Melting：By RxFe1-x-y-zByMzAnd RaFe1-a-bMbAfter setting ratio dispensing, it is melted respectively using vacuum induction melting
Aluminium alloy is smelt, is then poured on atwirl copper roller, obtain sheet A alloys and B alloys；
2）Batch mixing and broken：By A alloys and B alloys in mass ratio 100:0.5~10 ratio mixing, and hybrid alloys are crushed
Into powder C；
3）Hot pressing：Powder C is loaded in mould, 500 DEG C~750 DEG C are heated to, plus-pressure compacting, pressure be 10MPa~
100MPa, keeps 1min~10min, obtains hot-pressed magnets；
4）Thermal deformation：Hot-pressed magnets are placed in and are heated in 500 DEG C~850 DEG C of mould, plus-pressure compacting, pressure is 20MPa
~200MPa, keeps 1min~10min, obtains heat distortion magnet.
Further, step 1）In, the copper roller rotary speed of A alloys is 20m/s~35m/s, the copper roller rotary speed of B alloys
It is 2m/s~5m/s.
Further, step 2）In, hybrid alloys are broken into by powder C using Mechanical Method.
Further, step 2）In, the average grain diameter of powder C is 0.1mm~2mm.
The characteristics of present invention combines hot pressing/thermal deformation technique feature and powder metallurgical technique, the addition of B alloys can be with
Magnet is more prone to densification in hot pressing, in thermal deformation process, improve deformation velocity, so as to be more prone to prepare
Go out hot pressing/heat distortion magnet, reduce production cost, improve production efficiency.
Specific embodiment
The invention will be further described with reference to embodiments.
Embodiment 1
The NdFeB material of the present embodiment, is made up of two kinds of alloys of A phases and B phases, and A phase alloy compositions are（CePrNd）0.1Fe0.79B0.01（AlCoGaZr）0.1；B phase alloys are Ce0.8Fe0.199Ga0.001；A alloys are 100 with the mass ratio of B alloys:
0.5。
Preparation method, comprises the following steps：
1）Melting：Will using vacuum induction melting（CePrNd）0.1Fe0.79B0.01（AlCoGaZr）0.1And Ce0.8Fe0.199Ga0.001
Aluminium alloy is smelted into, is then poured into respectively in the rotary copper roller that rotating speed is 20m/s and 2m/s, obtained sheet A alloys and B is closed
Gold；
2）Batch mixing and broken：By A alloys and B alloys in mass ratio 100:0.5 ratio mixing, and conjunction will be mixed using Mechanical Method
Gold is broken into the powder C of average grain diameter 0.1mm；
3）Hot pressing：Powder C is loaded in mould, 500 DEG C are heated to, plus-pressure is suppressed, and pressure is 100MPa, keeps 1min, is obtained
Obtain hot-pressed magnets；
4）Thermal deformation：Hot-pressed magnets are placed in and are heated in 850 DEG C of mould, plus-pressure compacting, pressure is 200MPa, is kept
1min, obtains heat distortion magnet.
Test the magnetic property of magnet, remanent magnetism Br >=12.3kGs, coercivity H j >=12kOe, maximum magnetic energy product（BH）m≥
36MGOe。
Embodiment 2
The NdFeB material of the present embodiment, is made up of two kinds of alloys of A phases and B phases, and A phase alloy compositions are（CePrNdDy）0.32Fe0.572B0.008Nb0.1；B phase alloys are（LaCe）0.2Fe0.7Ga（AlCuCoGaNbZr）0.1；The mass ratio of A alloys and B alloys
It is 100:10.
Preparation method, comprises the following steps：
1）Melting：Will using vacuum induction melting（CePrNdDy）0.32Fe0.572B0.008Nb0.1With（LaCe）0.2Fe0.7
（AlCuCoGaNbZr）0.1Aluminium alloy is smelted into, is then poured into respectively in the rotary copper roller that rotating speed is 35m/s and 5m/s, obtained
Sheet A alloys and B alloys；
2）Batch mixing and broken：By A alloys and B alloys in mass ratio 100:10 ratio mixing, and conjunction will be mixed using Mechanical Method
Gold is broken into the powder C of average grain diameter 2mm；
3）Hot pressing：Powder C is loaded in mould, 750 DEG C are heated to, plus-pressure is suppressed, and pressure is 10MPa, keeps 10min, is obtained
Obtain hot-pressed magnets；
4）Thermal deformation：Hot-pressed magnets are placed in and are heated in 800 DEG C of mould, plus-pressure compacting, pressure is 100MPa, is kept
10min, obtains heat distortion magnet.
Test the magnetic property of magnet, remanent magnetism Br >=13kGs, coercivity H j >=12.3kOe, maximum magnetic energy product（BH）m≥
40MGOe。
Embodiment 3
The NdFeB material of the present embodiment, is made up of two kinds of alloys of A phases and B phases, and A phase alloy compositions are（CePrNdDy）0.3Fe0.592B0.008（CoAl）0.1；B phase alloys are Ce0.25Fe0.7（CuGaNbZr）0.05；A alloys are with the mass ratio of B alloys
100:5。
Preparation method, comprises the following steps：
1）Melting：Will using vacuum induction melting（CePrNdDy）0.3Fe0.592B0.008（CoAl）0.1And Ce0.25Fe0.7
（CuGaNbZr）0.05Aluminium alloy is smelted into, is then poured into respectively in the rotary copper roller that rotating speed is 30m/s and 3m/s, obtain piece
Shape A alloys and B alloys；
2）Batch mixing and broken：By A alloys and B alloys in mass ratio 100:5 ratio mixing, and Mechanical Method is used by hybrid alloys
It is broken into the powder C of average grain diameter 2mm；
3）Hot pressing：Powder C is loaded in mould, 600 DEG C are heated to, plus-pressure is suppressed, and pressure is 10MPa, keeps 8min, is obtained
Hot-pressed magnets；
4）Thermal deformation：Hot-pressed magnets are placed in and are heated in 750 DEG C of mould, plus-pressure compacting, pressure is 100MPa, is kept
10min, obtains heat distortion magnet.
Test the magnetic property of magnet, remanent magnetism Br >=12.7kGs, coercivity H j >=17.2kOe, maximum magnetic energy product（BH）m≥
39MGOe。
Claims (5)
1. a kind of NdFeB material, it is characterised in that：It is made up of two kinds of alloys of A phases and B phases, A phase alloys composition is RxFe1-x-y- zByMz, wherein, R is one or more in La, Ce, Pr, Nd, Dy, Ho, Tb, and M is the one kind in Al, Cu, Co, Nb, Ga, Zr
Or several, x=0.1~0.32, y=0.008~0.01, z=0.001~0.1；B phase alloys are RaFe1-a-bMb, wherein R be La,
One or more in Ce, Pr, Nd, Dy, Ho, Tb, M is one or more in Al, Cu, Co, Nb, Ga, Zr, a=0.2~
0.8, b=0.001~0.1；A alloys are 100 with the mass ratio of B alloys:0.5~10.
2. a kind of preparation method of NdFeB material as claimed in claim 1, it is characterised in that：Comprise the following steps：
1）Melting：By RxFe1-x-y-zByMzAnd RaFe1-a-bMbAfter setting ratio dispensing, it is melted respectively using vacuum induction melting
Aluminium alloy is smelt, is then poured on atwirl copper roller, obtain sheet A alloys and B alloys；
2）Batch mixing and broken：By A alloys and B alloys in mass ratio 100:0.5~10 ratio mixing, and hybrid alloys are crushed
Into powder C；
3）Hot pressing：Powder C is loaded in mould, 500 DEG C~750 DEG C are heated to, plus-pressure compacting, pressure be 10MPa~
100MPa, keeps 1min~10min, obtains hot-pressed magnets；
4）Thermal deformation：Hot-pressed magnets are placed in and are heated in 500 DEG C~850 DEG C of mould, plus-pressure compacting, pressure is 20MPa
~200MPa, keeps 1min~10min, obtains heat distortion magnet.
3. the preparation method of NdFeB material according to claim 2, it is characterised in that：Step 1）In, the copper roller of A alloys
Rotary speed is 20m/s~35m/s, and the copper roller rotary speed of B alloys is 2m/s~5m/s.
4. the preparation method of the NdFeB material according to Claims 2 or 3, it is characterised in that：Step 2）In, using machinery
The powder C that be broken into for hybrid alloys by method.
5. the preparation method of the NdFeB material according to Claims 2 or 3, it is characterised in that：Step 2）In, powder C's
Average grain diameter is 0.1mm~2mm.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107993828A (en) * | 2017-11-24 | 2018-05-04 | 周慧媛 | A kind of preparation process of permanent magnet alloy material |
| CN111161949A (en) * | 2019-12-31 | 2020-05-15 | 浙江大学 | YCe co-doped nanocrystalline rare earth permanent magnet and preparation method thereof |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1572005A (en) * | 2002-09-30 | 2005-01-26 | Tdk株式会社 | Method for producing r-t-b based rare earth element permanent magnet |
| CN101325109A (en) * | 2008-04-08 | 2008-12-17 | 浙江大学 | High-strength tenacity agglomeration neodymium-iron-boron magnet reconstructed by crystal boundary phase and preparation method thereof |
| CN104505206A (en) * | 2014-12-04 | 2015-04-08 | 浙江大学 | Preparation method of high-coercivity sintered Nd-Fe-B and product |
| CN104637643A (en) * | 2015-03-05 | 2015-05-20 | 内蒙古科技大学 | Rare-earth permanent magnet material mixed with bayan obo co-existence and associated crude ores and method for manufacturing rare-earth permanent magnet material |
-
2016
- 2016-12-05 CN CN201611100400.5A patent/CN106782971A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1572005A (en) * | 2002-09-30 | 2005-01-26 | Tdk株式会社 | Method for producing r-t-b based rare earth element permanent magnet |
| CN101325109A (en) * | 2008-04-08 | 2008-12-17 | 浙江大学 | High-strength tenacity agglomeration neodymium-iron-boron magnet reconstructed by crystal boundary phase and preparation method thereof |
| CN104505206A (en) * | 2014-12-04 | 2015-04-08 | 浙江大学 | Preparation method of high-coercivity sintered Nd-Fe-B and product |
| CN104637643A (en) * | 2015-03-05 | 2015-05-20 | 内蒙古科技大学 | Rare-earth permanent magnet material mixed with bayan obo co-existence and associated crude ores and method for manufacturing rare-earth permanent magnet material |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107993828A (en) * | 2017-11-24 | 2018-05-04 | 周慧媛 | A kind of preparation process of permanent magnet alloy material |
| CN107993828B (en) * | 2017-11-24 | 2020-05-08 | 浙江南磁实业股份有限公司 | Preparation process of permanent magnet alloy material |
| CN111161949A (en) * | 2019-12-31 | 2020-05-15 | 浙江大学 | YCe co-doped nanocrystalline rare earth permanent magnet and preparation method thereof |
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Application publication date: 20170531 |