CN107134338A - A kind of neodymium iron boron binding magnetic of compound addition zinc and gadolinium and preparation method thereof - Google Patents
A kind of neodymium iron boron binding magnetic of compound addition zinc and gadolinium and preparation method thereof Download PDFInfo
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- CN107134338A CN107134338A CN201710346995.0A CN201710346995A CN107134338A CN 107134338 A CN107134338 A CN 107134338A CN 201710346995 A CN201710346995 A CN 201710346995A CN 107134338 A CN107134338 A CN 107134338A
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- 239000011701 zinc Substances 0.000 title claims abstract description 47
- 229910052725 zinc Inorganic materials 0.000 title claims abstract description 44
- 229910001172 neodymium magnet Inorganic materials 0.000 title claims abstract description 42
- 229910052688 Gadolinium Inorganic materials 0.000 title claims abstract description 40
- UIWYJDYFSGRHKR-UHFFFAOYSA-N gadolinium atom Chemical compound [Gd] UIWYJDYFSGRHKR-UHFFFAOYSA-N 0.000 title claims abstract description 35
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 title claims abstract description 34
- 238000002360 preparation method Methods 0.000 title claims abstract description 29
- QJVKUMXDEUEQLH-UHFFFAOYSA-N [B].[Fe].[Nd] Chemical compound [B].[Fe].[Nd] QJVKUMXDEUEQLH-UHFFFAOYSA-N 0.000 title claims abstract description 22
- 150000001875 compounds Chemical class 0.000 title claims abstract description 22
- XEEYBQQBJWHFJM-UHFFFAOYSA-N iron Substances [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims abstract description 28
- 229910052796 boron Inorganic materials 0.000 claims abstract description 20
- 229910045601 alloy Inorganic materials 0.000 claims abstract description 18
- 239000000956 alloy Substances 0.000 claims abstract description 18
- 238000002425 crystallisation Methods 0.000 claims abstract description 17
- 230000008025 crystallization Effects 0.000 claims abstract description 17
- 239000000203 mixture Substances 0.000 claims abstract description 17
- 238000010791 quenching Methods 0.000 claims abstract description 17
- 230000000171 quenching effect Effects 0.000 claims abstract description 17
- 239000000463 material Substances 0.000 claims abstract description 14
- 238000002844 melting Methods 0.000 claims abstract description 8
- 230000008018 melting Effects 0.000 claims abstract description 8
- 229910052751 metal Inorganic materials 0.000 claims description 30
- 239000002184 metal Substances 0.000 claims description 21
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 claims description 18
- 239000007789 gas Substances 0.000 claims description 14
- 229910052779 Neodymium Inorganic materials 0.000 claims description 9
- 229910052786 argon Inorganic materials 0.000 claims description 9
- QEFYFXOXNSNQGX-UHFFFAOYSA-N neodymium atom Chemical compound [Nd] QEFYFXOXNSNQGX-UHFFFAOYSA-N 0.000 claims description 9
- 239000002994 raw material Substances 0.000 claims description 8
- 239000000446 fuel Substances 0.000 claims description 7
- 230000006698 induction Effects 0.000 claims description 6
- 238000011017 operating method Methods 0.000 claims description 5
- RKLPWYXSIBFAJB-UHFFFAOYSA-N [Nd].[Pr] Chemical compound [Nd].[Pr] RKLPWYXSIBFAJB-UHFFFAOYSA-N 0.000 claims description 3
- 229910052742 iron Inorganic materials 0.000 claims description 3
- 229910000583 Nd alloy Inorganic materials 0.000 claims description 2
- 230000007797 corrosion Effects 0.000 abstract description 7
- 238000005260 corrosion Methods 0.000 abstract description 7
- 239000013078 crystal Substances 0.000 abstract description 4
- 238000000034 method Methods 0.000 abstract description 4
- 238000012545 processing Methods 0.000 abstract description 4
- 230000003993 interaction Effects 0.000 abstract description 3
- 238000010168 coupling process Methods 0.000 abstract description 2
- 238000005859 coupling reaction Methods 0.000 abstract description 2
- 230000000052 comparative effect Effects 0.000 description 34
- 238000010348 incorporation Methods 0.000 description 11
- 239000000843 powder Substances 0.000 description 10
- 230000000694 effects Effects 0.000 description 6
- 229910000859 α-Fe Inorganic materials 0.000 description 4
- 238000003723 Smelting Methods 0.000 description 3
- 230000006399 behavior Effects 0.000 description 3
- 239000000696 magnetic material Substances 0.000 description 3
- ZOXJGFHDIHLPTG-UHFFFAOYSA-N Boron Chemical compound [B] ZOXJGFHDIHLPTG-UHFFFAOYSA-N 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 239000003822 epoxy resin Substances 0.000 description 2
- 230000006872 improvement Effects 0.000 description 2
- 229920000647 polyepoxide Polymers 0.000 description 2
- 229910052761 rare earth metal Inorganic materials 0.000 description 2
- 230000002195 synergetic effect Effects 0.000 description 2
- 238000010998 test method Methods 0.000 description 2
- 229910001021 Ferroalloy Inorganic materials 0.000 description 1
- 238000005275 alloying Methods 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 230000005347 demagnetization Effects 0.000 description 1
- 239000003814 drug Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000005308 ferrimagnetism Effects 0.000 description 1
- 230000004907 flux Effects 0.000 description 1
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 1
- 239000010931 gold Substances 0.000 description 1
- 229910052737 gold Inorganic materials 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 238000001556 precipitation Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 150000002910 rare earth metals Chemical class 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 230000001629 suppression Effects 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- 239000011800 void material Substances 0.000 description 1
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
- H01F1/057—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
-
- B22F1/0003—
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F1/00—Metallic powder; Treatment of metallic powder, e.g. to facilitate working or to improve properties
- B22F1/14—Treatment of metallic powder
- B22F1/142—Thermal or thermo-mechanical treatment
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/002—Ferrous alloys, e.g. steel alloys containing In, Mg, or other elements not provided for in one single group C22C38/001 - C22C38/60
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/005—Ferrous alloys, e.g. steel alloys containing rare earths, i.e. Sc, Y, Lanthanides
-
- 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
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- Crystallography & Structural Chemistry (AREA)
- Inorganic Chemistry (AREA)
- Power Engineering (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
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- Hard Magnetic Materials (AREA)
Abstract
The present invention relates to permanent-magnet material processing technique field, and in particular to a kind of neodymium iron boron binding magnetic of compound addition zinc and gadolinium and preparation method thereof.Each element composition is in the magnetic：Nd 10 ~ 11%, Gd1.0 ~ 2.6%, B 6 ~ 7%, Zn 0.2 ~ 0.5%, surplus is Fe.Zinc and the compound addition of gadolinium, the temperature coefficient of magnet can be reduced, improve α Fe crystallization temperatures, α Fe and Nd2Fe14B during rapid-quenched NdFeB alloy crystallization is set to separate out simultaneously, avoid α Fe from first separating out and grow up, refined crystal grain, enhance the exchange-coupling interaction between crystal grain, effective pinning sites increase, and can effectively improve the Hcj and Hk of cohesive magnetic；And zinc and gadolinium synergy, the combination of inner and outside, improve the prepared corrosion resistance for bonding magnetic.The inventive method limits temperature, vacuum, the parameters such as speed, the temperature of Crystallizing treatment of quenching of melting, further lifting magnetic combination property.
Description
Technical field
The present invention relates to permanent-magnet material processing technique field, and in particular to a kind of neodymium iron boron binding of compound addition zinc and gadolinium
Magnetic and preparation method thereof.
Background technology
Nd-Fe-B permanent magnet material is received extensive research due to its higher magnetic energy product and coercivity and paid attention to, extensively
It is general to be applied to the fields such as electronics, electric power, machinery, medicine equipment, but due to its Hard Magnetic phase Nd2Fe14B Curie temperature is relatively low, remains
Magnetic temperature coefficient and coercive force temperature coefficient are larger, limit its application in the higher field of some operating temperatures.
Theory and practice all shows, adds some alloying elements, can not only improve the magnetic property of product, can also significantly carry
The temperature characterisitic of high NdFeB series permanent magnet materials, improves its temperature in use.Yet with different metallic element crystallization behaviors not
Together, the every influence and mechanism to Nd-Fe-B permanent magnet material are also different, it usually needs Determination of multiple metal elements is compound to be added
Plus realize improvement to Nd-Fe-B permanent magnet material combination property, and metallic element addition to the property of Nd-Fe-B permanent magnet material
Modified there can be conclusive effect, if addition selection is incorrect to result even in minus effect, therefore how select suitable
Metallic element, and select suitable addition, realize the Curie temperature of the raising neodymium iron boron of low cost, improve its heat resistance
With comprehensive magnetic energy, become technical problem urgently to be resolved hurrily at present.
The content of the invention
In order to overcome the defect of prior art, glued it is an object of the invention to provide a kind of neodymium iron boron of compound addition zinc and gadolinium
Magnetic is tied, based on Nd-Fe-B permanent magnet, the metallic element such as incorporation gadolinium, zinc reduces cost, improves the heat resistance for bonding magnetic
And corrosion resistance, with excellent combination property.
Meanwhile, the present invention also resides in a kind of preparation method for the neodymium iron boron binding magnetic for providing compound addition zinc and gadolinium.
In order to realize the above object the technical solution adopted in the present invention is：
The weight percentage composition of each element is in a kind of neodymium iron boron binding magnetic of compound addition zinc and gadolinium, the magnetic：Nd
10 ~ 11%, Gd1.0 ~ 2.6%, B 6 ~ 7%, Zn 0.2 ~ 0.5%, surplus is Fe.
It is preferred that, the weight percentage composition of each element in the neodymium iron boron binding magnetic of above-mentioned compound addition zinc and gadolinium
For：Nd 10.5%, Gd 2%, B 6%, Zn 0.5%, surplus is Fe.
Optionally, the Nd elements source is closed for the praseodymium neodymium of pure neodymium metal or amount containing neodymium more than 80% that purity is more than 99.0%
Gold；Pure iron and boracic that the Fe elements source is industrial 99.8% are more than 19% ferro-boron；B element source be containing
Boron is more than 19% ferro-boron；The source of the Gd elements is more than 99% metal gadolinium for purity；The Zn elements source is pure
Metallic zinc of the degree more than 99%.
The preparation method of the neodymium iron boron binding magnetic of above-mentioned compound addition zinc and gadolinium, including following operating procedure：
1）Each raw material is taken to add in vacuum melting furnace by the weight percentage composition of each element, in ＜ 4 × 10-2Pa vacuum
Under state, alloy pig is smelted into；
2）By step 1）The alloy pig being smelted into is added in vacuum induction quick quenching furnace after crushing, and vacuum reaches 5 × 10-2After Pa,
Argon gas is filled with, the alloy pig crushed under ar gas environment, at a temperature of 1450 ~ 1500 DEG C is fused into point molten metal, control is fast
Speed of quenching is 25 ~ 33m/s, by point molten metal fast quenching into thickness be 50 ± 5 μm of uniform smear；
3）By step 2）The uniform smear of preparation is crushed to the magnetic of 40 mesh；
4）By step 3）The magnetic of preparation is 4.5 ~ 5.5 × 10-2Pa vacuum, at a temperature of 600 ~ 700 DEG C, crystallization furnace is set
Blanking velocity is that 20 ~ 25kg/h, rotating speed are 20 revolutions per seconds, carries out Crystallizing treatment, that is, completes.
Optionally, above-mentioned steps 4）In be additionally included in crystallization furnace and be filled with step 3 after argon gas again）The magnetic of preparation adds brilliant
Change in stove and carry out Crystallizing treatment.
The neodymium iron boron binding magnetic of the compound addition zinc of the present invention and gadolinium, by mixed in Nd-Fe-B permanent magnet material zinc and
Gadolinium, reduces cost, improves decay resistance, residual magnetic flux density, HCJ and the Curie temperature of magnetic, the bonding magnetic
The heat resistance that powder has had, is embodied in：
Gadolinium is as heavy rare earth element, and its atomic magnetic moment is that ferrimagnetism is coupled with 3d metallic atoms magnetic moment, in Neodymium iron boron magnetic material
Gadolinium is mixed in material, the neodymium iron boron bonded magnet that on the one hand prepared by addition gadolinium element has the higher degree of orientation, micro- group of magnet
Knit void, the defect such as loose is reduced, rich neodymium distributed mutually is uniform, gadolinium, which enters in rich neodymium phase, forms Gd2Fe14B, is conducive to improving
Its chemical stability, and its Curie point is 660K, and anisotropy field Ha is 1910KAm, and Curie point is higher than
Nd2Fe14B temperature spot, can improve the heat resistance and coercivity of magnet, can effectively improve magnet corrosion resistance, moreover it is possible to make magnetic
Body HCJ and demagnetization curve rectangularity rise；On the other hand addition gadolinium part replaces the position of neodymium in crystalline phase, Ke Yi great
The production cost of amplitude reduction product, promotes the comprehensive utilization of rare earth resources；
The incorporation of zinc, one side zinc can enter Nd2Fe14The position of Fe atoms is occupied in the lattice of B phases, makes Nd actual in alloy
Content is raised, simultaneously because the suppression that zinc is separated out to α-Fe so that less than the NdFeB alloys being just divided into point mainly by Nd2Fe14B
Single-phase composition, can completely inhibit Nd3Fe62B14The generation of metastable phase, Amorphous Crystallization process is changed into a step crystallization from two step crystallization,
The crystallization of out-phase equality of temperature is realized, the magnetic property of properties of melt spun NdFeB powders can be significantly improved；On the other hand, zinc surface at normal temperatures
Layer protecting film is generated, corrosion resistance is improved；
Therefore, the compound addition of zinc and gadolinium, can reduce the temperature coefficient of magnet, improve α-Fe crystallization temperature, make fast quenching
α-Fe and Nd2Fe14B are separated out simultaneously during NdFeB alloy crystallizations, it is to avoid α-Fe first precipitation and grown up, and have been refined crystal grain, have been increased
Exchange-coupling interaction between strong crystal grain, effective pinning sites increase, and can effectively improve the Hcj and Hk of cohesive magnetic；
And zinc and gadolinium synergy, the combination of inner and outside, the prepared corrosion resistance for bonding magnetic of lifting.
Additionally, it is well known that when incorporation metallic element improves its performance in Nd-Fe-B permanent magnet material, the metal member of incorporation
Improvement of the content of element to its performance has conclusive effect, or even if consumption selection is improper to play counteractive effect
Really, but when the metal species of incorporation are in two even two or more, to NdFeB material knot between different metallic elements
The influence of brilliant behavior is different, and there is also mutual restriction or the effect of Synergistic each other, then when two kinds of incorporation or
During two or more different metals, the selection of its incorporation is accomplished by considering the interaction between different metal element, due to
When being not present in gadolinium and zinc combined use incorporation Nd-Fe-B permanent magnet material in the prior art, the selection of its incorporation should be followed
Which kind of principle and rule, then the weight percentage of each metallic element is limited in the present invention so that each other can be fine
Performance synergy, while cost is reduced, lifting bonds the resistance to elevated temperatures and every magnetic property of magnetic, and lifting is bonded
The corrosion resistance of magnetic, is necessarily required to pay performing creative labour.
Bond the magnetic temperature that raw material metal is melted in preparation process, vacuum, the speed of fast quenching, Crystallizing treatment
The state modulator of temperature, vacuum etc. can influence the crystallization behavior of raw material, and then to prepare the crystallite dimension of magnetic etc. micro- for influence
Structure is seen, it is final to influence the magnetic properties such as the coercivity of magnetic, then the present invention bonds the preparation method of magnetic, according to the property of raw material
Can characteristic, the suitable melting vacuum environment of selection, smelting temperature, using the vacuum of vacuum induction fast quenching device intelligence control fast quenching
Environment and FFR'S fuel assembly, and the vacuum environment and temperature of suitable vacuum Crystallizing treatment are selected, especially whole preparation process exists
Carried out under the protection of argon gas, the grainiess of further refinement product influences the degree of orientation of magnetic, and the selection of parameters is total to
Same-action, further lifts resistance to elevated temperatures, decay resistance and the every magnetic property of magnetic.
Embodiment
Technical scheme is described in detail below by specific embodiment.
Following Nd elements sources are more than the 99.0% praseodymium neodymium alloy of pure neodymium metal or amount containing neodymium more than 80% for purity； Fe
Pure iron and boracic that element source is industrial 99.8% are more than 19% ferro-boron；B element source is more than 19% boron for boracic
Ferroalloy；The source of Gd elements is more than 99% metal gadolinium for purity；The source of Zn elements is more than 99% metallic zinc for purity.
Embodiment 1
The weight percentage composition of each element in a kind of neodymium iron boron binding magnetic of compound addition zinc and gadolinium, the bonding magnetic
For：Nd 10.5%, Gd 2%, B 6%, Zn 0.5%, surplus is Fe.
The preparation method of above-mentioned cohesive magnetic, including following operating procedure：
1）Each raw material is taken to add in vacuum melting furnace by the weight percentage composition of each element, in ＜ 4 × 10-2Pa vacuum
Under state, alloy pig is smelted into；
2）By step 1）The alloy pig being smelted into is added in vacuum induction quick quenching furnace after crushing, and vacuum reaches 5 × 10-2After Pa,
Argon gas is filled with, the alloy pig crushed under ar gas environment, at a temperature of 1500 DEG C is fused into point molten metal, controls FFR'S fuel assembly
For 25 ~ 33m/s, by point molten metal fast quenching into the uniform smear that thickness is 50 ± 5 μm；
3）By step 2）The uniform smear of preparation is crushed to the magnetic of 40 mesh.
4）By step 3）The magnetic of preparation is 4.5 ~ 5.5 × 10-2Pa vacuum, at a temperature of 650 DEG C, set under crystallization furnace
Material speed is that 25kg/h, rotating speed are 20 revolutions per seconds, carries out vacuum Crystallizing treatment, that is, completes.
Embodiment 2
The weight percentage composition of each element in a kind of neodymium iron boron binding magnetic of compound addition zinc and gadolinium, the bonding magnetic
For：Nd 10%, Gd 2.6%, B 6.5%, Zn 0.4%, surplus is Fe.
The preparation method of above-mentioned cohesive magnetic, including following operating procedure：
1）Each raw material is taken to add in vacuum melting furnace by the weight percentage composition of individual each element, in ＜ 4 × 10-2Pa's is true
Under dummy status, alloy pig is smelted into；
2）By step 1）The alloy pig being smelted into is added in vacuum induction quick quenching furnace after crushing, and vacuum reaches 5 × 10-2After Pa,
Argon gas is filled with, the alloy pig crushed under ar gas environment, at a temperature of 1450 DEG C is fused into point molten metal, controls FFR'S fuel assembly
For 25 ~ 33m/s, by point molten metal fast quenching into the uniform smear that thickness is 50 ± 5 μm；
3）By step 2）The uniform smear of preparation is crushed to the magnetic of 40 mesh；
4）By step 3）The magnetic of preparation is 4.5 ~ 5.5 × 10-2Pa vacuum, at a temperature of 600 DEG C, crystallization furnace blanking is set
Speed is that 23kg/h, rotating speed are 20 revolutions per seconds, carries out Crystallizing treatment.
Embodiment 3
The weight percentage composition of each element in a kind of neodymium iron boron binding magnetic of compound addition zinc and gadolinium, the bonding magnetic
For：Nd 11%, Gd1.0%, B 7%, Zn 0.2%, surplus is Fe.
The preparation method of above-mentioned cohesive magnetic, including following operating procedure：
1）Each raw material is taken to add in vacuum melting furnace by the weight percentage composition of each element, in ＜ 4 × 10-2Pa vacuum
Under state, alloy pig is smelted into；
2）By step 1）The alloy pig being smelted into is added in vacuum induction quick quenching furnace after crushing, and vacuum reaches 5 × 10-2After Pa,
Argon gas is filled with, the alloy pig crushed under ar gas environment, at a temperature of 1480 DEG C is fused into point molten metal, controls FFR'S fuel assembly
For 25 ~ 33m/s, by point molten metal fast quenching into the uniform smear that thickness is 50 ± 5 μm；
3）By step 2）The uniform smear of preparation is crushed to the magnetic of 40 mesh；
4）By step 3）The magnetic of preparation is 4.5 ~ 5.5 × 10-2Pa vacuum, it is filled with the environment of argon gas, 700 DEG C of temperature
Under, it is that 20kg/h, rotating speed are 20 revolutions per seconds to set blanking velocity, carries out Crystallizing treatment.
Comparative example 1
This comparative example bonds magnetic as different from Example 1, and the weight percentage composition of the bonding magnetic each element is：Nd
10.5%th, B 6%, Zn 2.5%, surplus is Fe.
Comparative example 2
This comparative example bonds magnetic as different from Example 1, and the weight percentage composition of the bonding magnetic each element is：Nd
12.5%th, B 6%, Zn 0.5%, surplus is Fe.
Comparative example 3
This comparative example bonds magnetic as different from Example 1, and the weight percentage composition of the bonding magnetic each element is：Nd
10.5%th, Gd 2.5%, B 6%, surplus is Fe.
Comparative example 4
This comparative example bonds magnetic as different from Example 1, and the weight percentage composition of the bonding magnetic each element is：Nd
11%th, Gd 2%, B 6%, surplus is Fe.
Comparative example 5
This comparative example bonds magnetic as different from Example 1, and the weight percentage composition of the bonding magnetic each element is：Nd
10.5%th, B 6%, surplus is Fe.
Comparative example 6
This comparative example bonds that magnetic is no with embodiment 1 is, step 2 in its preparation method）Middle smelting temperature is adjusted to 1600
DEG C, step 2）Middle FFR'S fuel assembly is adjusted to 20m/s, step 3）Temperature is adjusted to 800 DEG C, blanking velocity during middle Crystallizing treatment
30kg/h is adjusted to, adjustment of rotational speed is 25 revolutions per seconds, other be the same as Examples 1.
Comparative example 7
This comparative example bonds magnetic as different from Example 1, step 1 in its preparation method）Middle smelting temperature is adjusted to 1400
DEG C, step 2）Middle FFR'S fuel assembly is adjusted to 35m/s, step 3）Temperature is adjusted to 550 DEG C, blanking velocity during middle Crystallizing treatment
15kg/h is adjusted to, adjustment of rotational speed is 15 revolutions per seconds, other be the same as Examples 1.
Test example
Test method 1：Magnetic prepared by embodiment 1 ~ 3 and comparative example 1 ~ 7 is respectively with epoxy resin according to 98：2 ratio, warp
Diameter and the high ring magnet all for 10mm are pressed into after processing, with magnetic characteristic tester and JZB-1 type Curie temperature testers
The size of magnetic property and Curie temperature is detected, it is as a result as shown in table 1 below：
Table 1
| Hcj | （BH）max | Curie temperature | Br | |
| Embodiment 1 | 10.25kOe | 11.2MGOe | 390℃ | 9500Gs |
| Embodiment 2 | 9.95kOe | 10.8MGOe | 380℃ | 9325Gs |
| Embodiment 3 | 9.7kOe | 10.7MGOe | 370℃ | 9220Gs |
| Comparative example 1 | 9.6kOe | 10.5MGOe | 300℃ | 8520Gs |
| Comparative example 2 | 9.4kOe | 10.3MGOe | 290℃ | 8350Gs |
| Comparative example 3 | 8.95kOe | 10.1MGOe | 280℃ | 8200Gs |
| Comparative example 4 | 8.82kOe | 10.2MGOe | 275℃ | 8250Gs |
| Comparative example 5 | 8.54kOe | 9.8MGOe | 265℃ | 8100Gs |
| Comparative example 6 | 8.25kOe | 9.21MGOe | 350℃ | 7850Gs |
| Comparative example 7 | 8.80kOe | 10.35MGOe | 355℃ | 8960Gs |
The heat resistance and magnetic property of the magnetic prepared from the result shown in above-mentioned table 1, embodiment 1 are excellent better than embodiment 2
In embodiment 3.
Embodiment 1 ~ 3 prepare magnetic properties better than comparative example 1 better than comparative example 2 better than comparative example 3 better than pair
Ratio 4 is better than comparative example 5, is understood gadolinium and zinc mixing neodymium-iron-boron magnetic material simultaneously by the result, acted synergistically each other,
The Hcj of lifting bonding magnetic,（BH）max, Br and Curie temperature, improve the combination property for bonding magnetic.
The properties of magnetic prepared by embodiment 1 ~ 3 are better than comparative example 6 better than comparative example 7, from the result, at this
The state modulator of temperature, vacuum, the speed of fast quenching, the temperature of Crystallizing treatment, the vacuum of melting of restriction etc. is invented, each
The resistance to elevated temperatures of the selection collective effect of parameter, further lifting magnetic so that the magnetic of preparation has excellent comprehensive
Energy.
Test method 2：
Magnetic prepared by embodiment 1 ~ 3 and comparative example 1 ~ 5 is respectively with epoxy resin according to 98：2 ratio, is suppressed after processing
Into diameter and the high ring magnet all for 10mm, 85 DEG C are placed on, 180 days in the environment of 80%RH, each magnet outward appearance shape is observed
State, it is as a result as shown in table 2 below：The quality of magnet wherein before of poor quality and placement of the size of mass loss to place front and rear magnet
The ratio between；
Table 2
| Magnet pulverized state | |
| Embodiment 1 | Outward appearance has no obvious powder phenomenon-tion, and mass loss is less than 5% |
| Embodiment 2 | Outward appearance has no obvious powder phenomenon-tion, and mass loss is less than 5% |
| Embodiment 3 | Outward appearance has no obvious powder phenomenon-tion, and mass loss is less than 5% |
| Comparative example 1 | The visible obvious powder phenomenon-tion of outward appearance, mass loss reaches 10% or so |
| Comparative example 2 | The visible obvious powder phenomenon-tion of outward appearance, mass loss reaches 10% or so |
| Comparative example 3 | The visible obvious powder phenomenon-tion of outward appearance, mass loss reaches 10% or so |
| Comparative example 4 | The visible obvious powder phenomenon-tion of outward appearance, mass loss reaches 10% or so |
| Comparative example 5 | The visible obvious powder phenomenon-tion of outward appearance, mass loss reaches 10% or so |
By by gadolinium and the compound incorporation Nd-Fe-B magnetic material of zinc, passing through in the result shown in above-mentioned table 2, the present invention
The incorporation of each metallic element is limited, it is produced synergistic function, the corrosion resistance of the prepared product of lifting each other
Energy.
Claims (5)
1. a kind of neodymium iron boron binding magnetic of compound addition zinc and gadolinium, it is characterised in that the weight percent of each element in the magnetic
Content groups turn into：Nd10 ~ 11%, Gd1.0 ~ 2.6%, B 6 ~ 7%, Zn 0.2 ~ 0.5%, surplus is Fe.
2. the neodymium iron boron binding magnetic of compound addition zinc as claimed in claim 1 and gadolinium, it is characterised in that each member in the magnetic
The weight percentage of element is constituted：Nd 10.5%, Gd 2%, B 6%, Zn 0.5%, surplus is Fe.
3. the neodymium iron boron binding magnetic of compound addition zinc as claimed in claim 1 or 2 and gadolinium, it is characterised in that the Nd members
Usually source is the praseodymium neodymium alloy of pure neodymium metal or amount containing neodymium more than 80% that purity is more than 99.0%；The Fe elements source is industry
It is more than 19% ferro-boron with 99.8% pure iron and boracic；The B element source is more than 19% ferro-boron for boracic；Institute
The source for stating Gd elements is more than 99% metal gadolinium for purity；The Zn elements source is more than 99% metallic zinc for purity.
4. a kind of preparation method of the neodymium iron boron binding magnetic of compound addition zinc and gadolinium as claimed in claim 3, its feature exists
In, including following operating procedure：
1）Each raw material is taken to add in vacuum melting furnace by the weight percentage composition of each element, in ＜ 4 × 10-2Pa vacuum shape
Under state, alloy pig is smelted into；
2）By step 1）The alloy pig being smelted into is added in vacuum induction quick quenching furnace after crushing, and vacuum reaches 5 × 10-2After Pa,
Be filled with argon gas, point molten metal be fused under ar gas environment, at a temperature of 1450 ~ 1500 DEG C, control FFR'S fuel assembly for 25 ~
33m/s, by point molten metal fast quenching into thickness be 50 ± 5 μm of uniform smear；
3）By step 2）The uniform smear of preparation is crushed to the magnetic of 40 mesh；
4）By step 3）The magnetic of preparation is 4.5 ~ 5.5 × 10-2Pa vacuum, at a temperature of 600 ~ 700 DEG C, set under crystallization furnace
Material speed is that 20 ~ 25kg/h, rotating speed are 20 revolutions per seconds, carries out Crystallizing treatment, that is, completes.
5. the preparation method of the neodymium iron boron binding magnetic of compound addition zinc as claimed in claim 4 and gadolinium, it is characterised in that step
Rapid 4）In be additionally included in crystallization furnace and be filled with step 3 after argon gas again）The magnetic of preparation adds in crystallization furnace and carries out Crystallizing treatment.
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