CN109585111A - A kind of preparation method of no dysprosium terbium high-performance permanent magnet - Google Patents
A kind of preparation method of no dysprosium terbium high-performance permanent magnet Download PDFInfo
- Publication number
- CN109585111A CN109585111A CN201811376901.5A CN201811376901A CN109585111A CN 109585111 A CN109585111 A CN 109585111A CN 201811376901 A CN201811376901 A CN 201811376901A CN 109585111 A CN109585111 A CN 109585111A
- Authority
- CN
- China
- Prior art keywords
- alloy
- permanent magnet
- preparation
- rare earth
- black
- 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.)
- Pending
Links
Classifications
-
- 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
- H01F1/0577—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 sintered
-
- 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
Abstract
The invention belongs to permanent magnet preparation technical fields.The invention discloses a kind of preparation methods of no dysprosium terbium high-performance permanent magnet, it include raw material preparation, melting powder, the second alloy slurrying, the first alloy base, slurry coating and heat treatment processed and etc. composition, wherein the first alloying component is LR-Fe-B, second alloy is rich rare earth alloy, and wherein rare earth element is at least one of the rare earth element in addition to Dy and Tb.High-performance (SH grades or more the trade mark) magnet is made in the performance that the present invention improves permanent magnet in the case where not adding dysprosium terbium heavy rare earth element, can reduce cost while slowing down the arrival of heavy rare earth crisis；Through Overheating Treatment, the lattice defect in magnet can be reduced, keeps crystal structure more perfect；Simultaneously because rare earth concentration is higher than the first alloy in the second alloy, the part rare earth in the second alloy can be entered in black-film magnet, and the crystal boundary in black-film magnet is made to broaden, and rare earth concentration increases, hence it is evident that promotes the Hcj performance of magnet.
Description
Technical field
The present invention relates to permanent magnet preparation technical fields, more particularly, to a kind of preparation side of no dysprosium terbium high-performance permanent magnet
Method.
Background technique
Neodymium iron boron magnetic body has excellent magnetic property and is widely used.It is right with the rise in the fields such as new-energy automobile
The demand of high performance magnet is increasing, and traditional high performance magnet will often add a large amount of heavy rare earth dysprosium, terbium to improve magnetic
The intrinsic coercivity (Hcj) of body, but the reserves of dysprosium terbium are very low, and the application of extensive high-performance neodymium-iron-boron magnet may bring weight
Rare earth crisis.So people are seeking always nothing/low heavy rare earth high performance magnet preparation method.Although grain boundary diffusion process can
To reduce the dosage of heavy rare earth, but still need to use heavy rare earth.Crystal grain refinement may be implemented in the low trade mark without heavy rare earth, but
It is difficult to meet the requirement of the high-end application field such as new-energy automobile.
Summary of the invention
Meet newly to solve the above problems, not adding dysprosium terbium heavy rare earth element the present invention provides one kind and being still able to obtain
The preparation method for the high-performance permanent magnet that the high-end application field such as energy automobile requires.
To achieve the above object, The technical solution adopted by the invention is as follows:
A kind of preparation method of no dysprosium terbium high-performance permanent magnet, comprising the following steps:
A) raw material preparation: the first alloying component is LR-Fe-B, and wherein LR is at least one of La, Ce, Nd or Pr, and LR's contains
Amount is 20~35wt%, and the content of B is 0.8~1.2wt%, surplus Fe；Second alloy is rich rare earth alloy, wherein rare earth member
Element is at least one of the rare earth element in addition to Dy and Tb, and the content of rare earth element is not less than 35wt%；
B) it melts powder processed: being configured respectively by said ratio, the first alloy and the second alloy is made in founding, then respectively successively
Carry out coarse crushing, finely divided obtained first alloy powder and the second alloy powder；
C) the second alloy slurrying: adding organic solvent uniform stirring into the second alloy powder and be modulated into the second alloy pulp,
Middle organic solvent is alcohols, aldehydes or ketones solvent, and the content of the second alloy is 5~80wt% in the second alloy pulp；
D) the first alloy base: the first alloy powder is formed in magnetic field, and then sintering 1~10 is small at 1000~1120 DEG C
When be made blank, and by blank finish be made black-film；
E) slurry coating: by the second alloy pulp even application on black-film surface, the weight of the second alloy pulp of coating is black
0.1~3.0wt% of sheet weight；
F) it is heat-treated: the black-film after coated second alloy pulp is heat-treated in a vacuum furnace, first at 800~1040 DEG C
Then lower high-temperature heat treatment 1~30 hour carries out Low Temperature Heat Treatment 3~6 hours at 400~650 DEG C, be made without the high property of dysprosium terbium
It can permanent magnet.
Through Overheating Treatment, the lattice defect in magnet can be reduced, keeps crystal structure more perfect.
Preferably, in the first alloy also contain T element, T element be selected from Co, Cu, Al, Nb, Ga, Zr, Ti, W, Mo,
V, at least one of Zn, Si, Mn or Ni element, T constituent content are no more than 2.0wt%.
Preferably, in the second alloy also containing selected from Cu, Al, Nb, Ga, Zr, Ti, W, Mo, V, Zn, Si, Mn, Ni, B,
At least one of Fe or Co element.
Preferably, in step b), when founding, melted under vacuum or inert gas environment, then using casting or casting
Piece method, which is quickly cooled down, is made the first alloy and the second alloy.
Preferably, in step b), the first alloy coarse powder and the are made using Mechanical Crushing or hydrogen breaking method when coarse crushing
Two alloy coarse powder；The first alloy coarse powder and the second alloy coarse powder are made respectively using airflow milling, ball milling or vibromill when finely divided
Obtain the first alloy powder and the second alloy powder.
Preferably, the average grain diameter of the first alloy powder made from step b) is 2~5 μm, the second alloy powder
Average grain diameter is 1~10 μm.
Preferably, the average grain diameter of the second alloy powder made from step b) is 1~5 μm.
Preferably, the average grain diameter of the second alloy powder made from step b) is 1~3 μm.
Preferably, step c), the content of the second alloy is 10~60wt% in the second alloy pulp.
Preferably, step c), the content of the second alloy is 20~50wt% in the second alloy pulp.
Preferably, molding and sintering all carry out under vacuum or inert gas shielding in step d).
Preferably, molding is using in dry-press process, the dry-press process and wet forming of addition binder in step d)
It is a kind of.
Dry-press process is exactly to form the first alloy powder direct pressing, and the dry-press process for adding binder is exactly first
Added in alloy powder a small amount of (such as 1~2wt%) common binder (polyvinyl alcohol of such as 5~10wt%) it is re-compacted at
Type, wet forming are configured to slurry after exactly mixing the first alloy powder with solvent and form again.
Preferably, being sintered after blank is made in step d) and carrying out tempering.
Preferably, finishing and being carried out at cleaning in the nitric acid for placing it in 2~4wt% after black-film is made in step d)
Reason.
Preferably, finishing and being started the cleaning processing in the nitric acid for placing it in 3wt% after black-film is made in step d).
Blank is machined to the geomery needed, referred to as black-film, black-film obtained is surface-treated,
Except degreasing and oxide layer.
Preferably, forming magnetic field is not less than 1T when molding in step d).
It is carried out preferably, being coated in step e) under nitrogen or inert gas shielding, the mode of coating is spraying, dipping
Or one of printing.
Preferably, in step e), by the second alloy pulp even application in black-film surface, the second alloy pulp of coating
Weight be black-film weight 0.1~2.0wt%.
Preferably, in step e), by the second alloy pulp even application in black-film surface, the second alloy pulp of coating
Weight be black-film weight 0.2~1.0wt%.
Black-film can be dried up with nitrogen after the coating of second alloy pulp.
Therefore, the invention has the following advantages: the present invention is improved in the case where not adding dysprosium terbium heavy rare earth element
High-performance (SH grades or more the trade mark) magnet is made in the performance of permanent magnet, can reduce cost while slowing down arriving for heavy rare earth crisis
Come；Through Overheating Treatment, the lattice defect in magnet can be reduced, keeps crystal structure more perfect；Simultaneously because dilute in the second alloy
Native concentration is higher than the first alloy, and the part rare earth in the second alloy can enter in black-film magnet, makes the crystal boundary in black-film magnet
It broadens, rare earth concentration increases, hence it is evident that promotes the Hcj performance of magnet.
Specific embodiment
Further description of the technical solution of the present invention With reference to embodiment.
Obviously, the described embodiments are merely a part of the embodiments of the present invention, instead of all the embodiments.Based on this
Embodiment in invention, all other reality obtained by those of ordinary skill in the art without making creative efforts
Example is applied, shall fall within the protection scope of the present invention.
In the present invention, if not refering in particular to, all equipment and raw material is commercially available or the industry is common,
Method in following embodiments is unless otherwise instructed conventional method in that art.
Embodiment 1
A kind of preparation method of no dysprosium terbium high-performance permanent magnet, comprising the following steps:
A) raw material preparation: preparing raw material by following element composition,
First alloying component is 24.0wt%Nd-7.5wt%Pr-1.2wt%Co-0.3wt%Al-0.1wt%Cu-1.0wt%
B- surplus Fe；
Second alloying component is 5wt%Ga-5wt%Nb-90wt%Nd；
B) it melts powder processed: being configured respectively by said ratio, the first alloy and the second alloy is made in founding, then respectively successively
The first alloy powder and the second alloy powder is made using the coarse crushing of hydrogen breaking method, using airflow milling is finely divided；When founding, true
It is melted under Altitude, is then quickly cooled down using casting and the first alloy and the second alloy is made；First alloy powder obtained
Average grain diameter is 3.6 μm, and the average grain diameter of the second alloy powder is 2 μm；
C) the second alloy slurrying: adding organic solvent uniform stirring into the second alloy powder and be modulated into the second alloy pulp,
Middle organic solvent is ethyl alcohol, and the content of the second alloy is 50wt% in the second alloy pulp；
D) the first alloy base: the first alloy powder is formed in the magnetic field of 1.5T using dry forming process, then 1060
It is sintered 5 hours obtained blanks at DEG C, and blank is finished, black-film is made, black-film obtained will be finished and be placed on 3wt%'s
It is started the cleaning processing in nitric acid；Molding and sintering all carry out under inert gas protection；
E) slurry coating: taking-up nitrogen after under nitrogen protection impregnating the black-film after cleaning 10 seconds in the second alloy pulp
Drying, the weight of the second alloy pulp of coating are the 2.0wt% of black-film weight；
F) it is heat-treated: the black-film after coated second alloy pulp is heat-treated in a vacuum furnace, first the high temperature at 920 DEG C
Heat treatment 15 hours, then carries out Low Temperature Heat Treatment 4 hours at 510 DEG C, is made without dysprosium terbium high-performance permanent magnet.
Embodiment 2
A kind of preparation method of no dysprosium terbium high-performance permanent magnet, comprising the following steps:
A) raw material preparation: preparing raw material by following element composition,
First alloying component is 10wt%Nd-4wt%La-6wt%Ge-0.3wt%Nb-0.3wt%Ca0.4wt%Zr-
0.8wt%B- surplus Fe；
Second alloying component is 8wt%Cu-10wt%Al-14wt%V-13wt%Zn-10wt%Ni-10wt%Co-30wt%
Nd-5wt%La；
B) it melts powder processed: being configured respectively by said ratio, the first alloy and the second alloy is made in founding, then respectively successively
The first alloy powder and the second alloy powder is made using jaw crusher coarse crushing, using airflow milling is finely divided；When founding,
It is melted under vacuum environment, is then quickly cooled down using casting and the first alloy and the second alloy is made；First alloy powder obtained
Average grain diameter be 2 μm, the average grain diameter of the second alloy powder is 1 μm；
C) the second alloy slurrying: adding organic solvent uniform stirring into the second alloy powder and be modulated into the second alloy pulp,
Middle organic solvent is acetaldehyde, and the content of the second alloy is 5wt% in the second alloy pulp；
D) the first alloy base: the first alloy powder is formed in the magnetic field of 1T using dry forming process, then at 1000 DEG C
1 hour obtained blank of lower sintering, blank finish obtained black-film after carrying out tempering, it is set after finishing black-film obtained
It is started the cleaning processing in the nitric acid of 2wt%；Molding and sintering all carry out under vacuum；
E) slurry coating: by the second alloy pulp, even application on black-film surface, starch by the second alloy of coating under nitrogen protection
The weight of material is the 0.1wt% of black-film weight；
F) it is heat-treated: the black-film after coated second alloy pulp is heat-treated in a vacuum furnace, first the high temperature at 800 DEG C
Heat treatment 1 hour, then carries out Low Temperature Heat Treatment 3 hours at 400 DEG C, is made without dysprosium terbium high-performance permanent magnet.
Embodiment 3
A kind of preparation method of no dysprosium terbium high-performance permanent magnet, comprising the following steps:
A) raw material preparation: preparing raw material by following element composition,
First alloying component is 20wt%Nd-10wt%Ce-0.3wt%Ti-0.3wt%Mo-0.3wt%Zn-0.6wt%Ni-
Surplus Fe；
Second alloying component 20wt%Nd-10wt%Sm-13wt%Tm-17wt%Eu-6wt%Si-7wt%Ti-7wt%Zr-
10wt%B-10wt%Fe；
B) it melts powder processed: being configured respectively by said ratio, the first alloy and the second alloy is made in founding, then respectively successively
The first alloy powder and the second alloy powder is made using intermediate crusher coarse crushing, using ball milling is finely divided；When founding, in indifferent gas
It is melted under body environment, is then quickly cooled down using slab method and the first alloy and the second alloy is made；First alloy powder obtained
Average grain diameter be 3 μm, the average grain diameter of the second alloy powder is 3 μm；
C) the second alloy slurrying: adding organic solvent uniform stirring into the second alloy powder and be modulated into the second alloy pulp,
Middle organic solvent is acetone, and the content of the second alloy is 10wt% in the second alloy pulp；
D) the first alloy base: the first alloy powder is formed in the magnetic field of 5T using the dry forming process of addition binder,
Then 4 hours obtained blanks are sintered at 1050 DEG C, blank finishes obtained black-film after carrying out tempering, finishing is made
Black-film after its be placed in the nitric acid of 2.5wt% and start the cleaning processing；Molding and sintering all carry out under inert gas protection；
E) slurry coating: by the second alloy pulp, even print on black-film surface, starch by the second alloy of coating under nitrogen protection
The weight of material is the 0.2wt% of black-film weight；
F) it is heat-treated: the black-film after coated second alloy pulp is heat-treated in a vacuum furnace, first the high temperature at 900 DEG C
Heat treatment 5 hours, then carries out Low Temperature Heat Treatment 4 hours at 450 DEG C, is made without dysprosium terbium high-performance permanent magnet.
Embodiment 4
A kind of preparation method of no dysprosium terbium high-performance permanent magnet, comprising the following steps:
A) raw material preparation: preparing raw material by following element composition,
First alloying component is more than 20wt%Nd-10wt%Ce-0.3wt%W-0.3wt%V-0.3wt%Si-0.6wt%Mn-
Measure Fe；
Second alloying component 20wt%Nd-10wt%Gd-13wt%Yb-17wt%Sc-6wt%W-7wt%Mo-7wt%Mn-
10wt%B-10wt%Fe；
B) it melts powder processed: being configured respectively by said ratio, the first alloy and the second alloy is made in founding, then respectively successively
The first alloy powder and the second alloy powder is made using bruisher coarse crushing, using vibromill is finely divided；When founding, in inertia
It is melted under gaseous environment, is then quickly cooled down using slab method and the first alloy and the second alloy is made；First alloyed powder obtained
The average grain diameter at end is 4 μm, and the average grain diameter of the second alloy powder is 5 μm；
C) the second alloy slurrying: adding organic solvent uniform stirring into the second alloy powder and be modulated into the second alloy pulp,
Middle organic solvent is ethylene glycol, and the content of the second alloy is 60wt% in the second alloy pulp；
D) the first alloy base: the first alloy powder is formed in the magnetic field of 3T using wet forming method, then at 1100 DEG C
7 hours obtained blanks of lower sintering, blank finish obtained black-film after carrying out tempering, it is set after finishing black-film obtained
It is started the cleaning processing in the nitric acid of 3.5wt%；Molding and sintering all carry out under inert gas protection；
E) slurry coating: by the second alloy pulp, even print on black-film surface, close by the second of coating under inert gas protection
The weight of Gold conductor is the 1.0wt% of black-film weight；
F) it is heat-treated: the black-film after coated second alloy pulp is heat-treated in a vacuum furnace, it is first high at 1000 DEG C
Warm processing 20 hours, then carries out Low Temperature Heat Treatment 5 hours at 550 DEG C, is made without dysprosium terbium high-performance permanent magnet.
Embodiment 5
A kind of preparation method of no dysprosium terbium high-performance permanent magnet, comprising the following steps:
A) raw material preparation: preparing raw material by following element composition,
First alloying component is 20wt%Nd-10wt%Pr-5wt%Ce-1.2wt%B- surplus Fe；
Second alloying component is 35wt%Ce-25wt%Pr-20wt%Sm-7wt%Ho-6wt%Er-3wt%Lu-4wt%Y；
B) it melts powder processed: being configured respectively by said ratio, the first alloy and the second alloy is made in founding, then respectively successively
The first alloy powder and the second alloy powder is made using the coarse crushing of hydrogen breaking method, using airflow milling is finely divided；When founding, lazy
Property gaseous environment under melt, be then quickly cooled down using casting and the first alloy and the second alloy be made；First alloy obtained
The average grain diameter of powder is 5 μm, and the average grain diameter of the second alloy powder is 10 μm；
C) the second alloy slurrying: adding organic solvent uniform stirring into the second alloy powder and be modulated into the second alloy pulp,
Middle organic solvent is ethyl alcohol, and the content of the second alloy is 80wt% in the second alloy pulp；
D) the first alloy base: the first alloy powder is formed in the magnetic field of 2T using dry forming process, then at 1120 DEG C
10 hours obtained blanks of lower sintering, blank finish after tempering that black-film is made, and will finish after black-film obtained it
It is placed in the nitric acid of 4wt% and starts the cleaning processing；Molding and sintering all carry out under inert gas protection；
E) slurry coating: by the second alloy pulp, even application on black-film surface, close by the second of coating under inert gas protection
The weight of Gold conductor is the 3.0wt% of black-film weight；
F) it is heat-treated: the black-film after coated second alloy pulp is heat-treated in a vacuum furnace, it is first high at 1040 DEG C
Warm processing 30 hours, then carries out Low Temperature Heat Treatment 6 hours at 650 DEG C, is made without dysprosium terbium high-performance permanent magnet.
Comparative example 1
Blank made from 1 step d) of embodiment is directly tested into magnetic property.
Comparative example 2
Blank made from 1 step d) of embodiment is not applied into the heat treatment that the second alloy pulp directly carries out step f), is then surveyed
Try magnetic property.
Magnetism testing will be carried out without dysprosium terbium high-performance permanent magnet made from above-described embodiment 1~5.
The magnetic property of permanent magnet made from Examples 1 to 5 and comparative example 1~2 is compared.
Magnetic property comparison is as shown in table 1.
1 Examples 1 to 5 of table and 1~2 magnetic property of comparative example compare
The test data as shown in table 1 compares as it can be seen that the permanent magnet as made from the embodiment of the present invention 1~5 is compared to comparative example 1
The Hcj performance of~2 obtained permanent magnets is significantly increased, and has reached the N48SH grades of performances with upper magnet.
It should be understood that those skilled in the art, can be improved or be become according to the above description
It changes, and all these modifications and variations should all belong to the protection domain of appended claims of the present invention.
Claims (10)
1. a kind of preparation method of no dysprosium terbium high-performance permanent magnet, it is characterised in that the following steps are included:
A) raw material preparation: the first alloying component is LR-Fe-B, and wherein LR is at least one of La, Ce, Nd or Pr, and LR's contains
Amount is 20~35wt%, and the content of B is 0.8~1.2wt%, surplus Fe；Second alloying component is rich rare earth alloy, wherein rare earth
Element is at least one of the rare earth element in addition to Dy and Tb, and the content of rare earth element is not less than 35wt%；
B) it melts powder processed: being configured respectively by said ratio, the first alloy and the second alloy is made in founding, then respectively successively
Carry out coarse crushing, finely divided obtained first alloy powder and the second alloy powder；
C) the second alloy slurrying: adding organic solvent uniform stirring into the second alloy powder and be modulated into the second alloy pulp,
Middle organic solvent is alcohols, aldehydes or ketones solvent, and the content of the second alloy is 5~80wt% in the second alloy pulp；
D) the first alloy base: the first alloy powder is formed in magnetic field, and then sintering 1~10 is small at 1000~1120 DEG C
When be made blank, and by blank finish be made black-film；
E) slurry coating: by the second alloy pulp even application on black-film surface, the weight of the second alloy pulp of coating is black
0.1~3wt% of sheet weight；
F) it is heat-treated: the black-film after coated second alloy pulp is heat-treated in a vacuum furnace, first at 800~1040 DEG C
Then lower high-temperature heat treatment 1~30 hour carries out Low Temperature Heat Treatment 3~6 hours at 400~650 DEG C, be made without the high property of dysprosium terbium
It can permanent magnet.
2. a kind of preparation method of no dysprosium terbium high-performance permanent magnet according to claim 1, it is characterised in that:
Also contain T element in first alloy, T element is selected from Co, Cu, Al, Nb, Ga, Zr, Ti, W, Mo, V, Zn, Si, Mn
Or at least one of Ni element, T constituent content are 1.0~2.0wt%.
3. a kind of preparation method of no dysprosium terbium high-performance permanent magnet according to claim 1, it is characterised in that:
Also containing in Cu, Al, Nb, Ga, Zr, Ti, W, Mo, V, Zn, Si, Mn, Ni, B, Fe or Co in second alloy
At least one element.
4. a kind of preparation method of no dysprosium terbium high-performance permanent magnet according to claim 1 or 2 or 3, it is characterised in that:
It in the step b), when founding, is melted under vacuum or inert gas environment, then using casting or the fast quickly cooling of slab method
But the first alloy and the second alloy is made.
5. a kind of preparation method of no dysprosium terbium high-performance permanent magnet according to claim 1 or 2 or 3, it is characterised in that:
In the step b), the first alloy coarse powder is made using Mechanical Crushing or hydrogen breaking method when coarse crushing and the second alloy is thick
Powder；The first alloy coarse powder and the second alloy coarse powder first is made respectively using airflow milling, ball milling or vibromill when finely divided to close
Bronze end and the second alloy powder.
6. a kind of preparation method of no dysprosium terbium high-performance permanent magnet according to claim 1 or 2 or 3, it is characterised in that:
It forms and is sintered in the step d) and all carried out under vacuum or inert gas shielding.
7. a kind of preparation method of no dysprosium terbium high-performance permanent magnet according to claim 6, it is characterised in that:
In the step d), molding is using one of dry-press process, the dry-press process of addition binder and wet forming.
8. a kind of preparation method of no dysprosium terbium high-performance permanent magnet according to claim 6, it is characterised in that:
In the step d), it is sintered after blank is made and carries out tempering.
9. a kind of preparation method of no dysprosium terbium high-performance permanent magnet according to claim 1 or 2 or 3, it is characterised in that:
In the step d), finishes and started the cleaning processing in the nitric acid for placing it in 2~4wt% after black-film is made.
10. a kind of preparation method of no dysprosium terbium high-performance permanent magnet according to claim 1 or 2 or 3, it is characterised in that:
It is coated under nitrogen or inert gas shielding and carries out in the step e), the mode of coating is in spraying, dipping or printing
One kind.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811376901.5A CN109585111A (en) | 2018-11-19 | 2018-11-19 | A kind of preparation method of no dysprosium terbium high-performance permanent magnet |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811376901.5A CN109585111A (en) | 2018-11-19 | 2018-11-19 | A kind of preparation method of no dysprosium terbium high-performance permanent magnet |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109585111A true CN109585111A (en) | 2019-04-05 |
Family
ID=65923182
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811376901.5A Pending CN109585111A (en) | 2018-11-19 | 2018-11-19 | A kind of preparation method of no dysprosium terbium high-performance permanent magnet |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109585111A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110289161A (en) * | 2019-07-16 | 2019-09-27 | 宁德市星宇科技有限公司 | A kind of preparation method of the neodymium iron boron magnetic body of low content of rare earth |
| WO2021017967A1 (en) * | 2019-07-31 | 2021-02-04 | 厦门钨业股份有限公司 | Rare earth permanent magnet material and raw material composition, preparation method therefor and use thereof |
| CN113257508A (en) * | 2021-05-13 | 2021-08-13 | 中钢天源股份有限公司 | Method for manufacturing neodymium iron boron with high comprehensive performance |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2007077602A1 (en) * | 2005-12-28 | 2007-07-12 | Aisin Seiki Kabushiki Kaisha | Anticorrosive rare earth magnet |
| CN101944430A (en) * | 2009-07-01 | 2011-01-12 | 信越化学工业株式会社 | Rare earth magnet and its preparation |
| CN104737244A (en) * | 2012-10-23 | 2015-06-24 | 丰田自动车株式会社 | Rare-earth sintered magnet and method for manufacturing same |
| CN105321702A (en) * | 2015-11-19 | 2016-02-10 | 北京科技大学 | Method for improving coercivity of sintered NdFeB magnet |
| CN105761861A (en) * | 2016-05-10 | 2016-07-13 | 江西金力永磁科技股份有限公司 | Neodymium-iron-boron magnet and preparation method thereof |
| CN106128679A (en) * | 2016-08-24 | 2016-11-16 | 江西金力永磁科技股份有限公司 | A kind of modified neodymium iron boron magnetic body and its manufacture method |
| CN108766703A (en) * | 2018-06-08 | 2018-11-06 | 江西理工大学 | A kind of more main phase high abundance rare earth permanent-magnetic materials of high temperature resistant and preparation method thereof |
-
2018
- 2018-11-19 CN CN201811376901.5A patent/CN109585111A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2007077602A1 (en) * | 2005-12-28 | 2007-07-12 | Aisin Seiki Kabushiki Kaisha | Anticorrosive rare earth magnet |
| CN101944430A (en) * | 2009-07-01 | 2011-01-12 | 信越化学工业株式会社 | Rare earth magnet and its preparation |
| CN104737244A (en) * | 2012-10-23 | 2015-06-24 | 丰田自动车株式会社 | Rare-earth sintered magnet and method for manufacturing same |
| CN105321702A (en) * | 2015-11-19 | 2016-02-10 | 北京科技大学 | Method for improving coercivity of sintered NdFeB magnet |
| CN105761861A (en) * | 2016-05-10 | 2016-07-13 | 江西金力永磁科技股份有限公司 | Neodymium-iron-boron magnet and preparation method thereof |
| CN106128679A (en) * | 2016-08-24 | 2016-11-16 | 江西金力永磁科技股份有限公司 | A kind of modified neodymium iron boron magnetic body and its manufacture method |
| CN108766703A (en) * | 2018-06-08 | 2018-11-06 | 江西理工大学 | A kind of more main phase high abundance rare earth permanent-magnetic materials of high temperature resistant and preparation method thereof |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110289161A (en) * | 2019-07-16 | 2019-09-27 | 宁德市星宇科技有限公司 | A kind of preparation method of the neodymium iron boron magnetic body of low content of rare earth |
| CN110289161B (en) * | 2019-07-16 | 2021-03-30 | 宁德市星宇科技有限公司 | Preparation method of neodymium iron boron magnet with low rare earth content |
| CN113012925A (en) * | 2019-07-16 | 2021-06-22 | 宁德市星宇科技有限公司 | Preparation method of high-magnetism low-rare earth content neodymium iron boron magnet |
| CN113012925B (en) * | 2019-07-16 | 2022-09-20 | 宁德市星宇科技有限公司 | Preparation method of high-magnetism low-rare earth content neodymium iron boron magnet |
| WO2021017967A1 (en) * | 2019-07-31 | 2021-02-04 | 厦门钨业股份有限公司 | Rare earth permanent magnet material and raw material composition, preparation method therefor and use thereof |
| CN113257508A (en) * | 2021-05-13 | 2021-08-13 | 中钢天源股份有限公司 | Method for manufacturing neodymium iron boron with high comprehensive performance |
| CN113257508B (en) * | 2021-05-13 | 2023-09-01 | 中钢天源股份有限公司 | Manufacturing method of neodymium iron boron |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| TWI431644B (en) | Rare earth permanent magnet and manufacturing method thereof | |
| US20200203069A1 (en) | Rare earth permanent magnets and their preparation | |
| JP6960201B2 (en) | Method for manufacturing Nd-Fe-B-based sintered permanent magnetic material | |
| CN101521068B (en) | Rare earth permanent magnet and method of manufacturing the same | |
| JP5363314B2 (en) | NdFeB-based sintered magnet manufacturing method | |
| CN104051101B (en) | A kind of rare-earth permanent magnet and preparation method thereof | |
| CN107251176B (en) | The manufacturing method of R-T-B based sintered magnet | |
| KR102527123B1 (en) | Rare earth permanent magnet material and its raw material composition, manufacturing method and application | |
| CN102456458A (en) | High-corrosion-resistance sintered neodymium iron boron magnet and preparation method thereof | |
| CN109585111A (en) | A kind of preparation method of no dysprosium terbium high-performance permanent magnet | |
| CN103903823A (en) | Rare earth permanent magnetic material and preparation method thereof | |
| US9818515B2 (en) | Modified Nd—Fe—B permanent magnet with high corrosion resistance | |
| JP2019535121A (en) | High temperature resistant neodymium / iron / boron magnet and manufacturing method thereof | |
| EP3726549A1 (en) | Rare earth permanent magnet material and preparation method therefor | |
| CN110148507A (en) | One kind containing REFe2Grain boundary decision cerium magnet of phase and preparation method thereof | |
| CN109087768B (en) | Neodymium iron boron permanent magnet material for magnetic suspension system and preparation method thereof | |
| CN110534280A (en) | A kind of preparation method of the performance Nd Fe B sintered magnet based on crystal boundary addition | |
| JP2002038245A (en) | Rare earth alloy powder for rermanent magnet and method for manufacturing rare earth permanent magnet | |
| CN112086255A (en) | High-coercivity and high-temperature-resistant sintered neodymium-iron-boron magnet and preparation method thereof | |
| CN113871122A (en) | Low-weight rare earth magnet and method of manufacturing the same | |
| CN113593882A (en) | 2-17 type samarium-cobalt permanent magnet material and preparation method and application thereof | |
| CN111341515B (en) | Cerium-containing neodymium-iron-boron magnetic steel and preparation method thereof | |
| JP3781094B2 (en) | Corrosion resistant rare earth magnet | |
| CN111477446A (en) | Neodymium-iron-boron sintered magnet and preparation method thereof | |
| CN111052276B (en) | Method for producing R-T-B sintered magnet |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20190405 |