CN106887291B - SmCo5Permanent magnetism thin strip magnet and preparation method thereof - Google Patents
SmCo5Permanent magnetism thin strip magnet and preparation method thereof Download PDFInfo
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- CN106887291B CN106887291B CN201710189606.8A CN201710189606A CN106887291B CN 106887291 B CN106887291 B CN 106887291B CN 201710189606 A CN201710189606 A CN 201710189606A CN 106887291 B CN106887291 B CN 106887291B
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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
- H01F1/0551—Alloys characterised by their composition containing rare earth metals and magnetic transition metals, e.g. SmCo5 in the form of particles, e.g. rapid quenched powders or ribbon flakes
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- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D11/00—Continuous casting of metals, i.e. casting in indefinite lengths
- B22D11/06—Continuous casting of metals, i.e. casting in indefinite lengths into moulds with travelling walls, e.g. with rolls, plates, belts, caterpillars
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D18/00—Pressure casting; Vacuum casting
- B22D18/06—Vacuum casting, i.e. making use of vacuum to fill the mould
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- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D8/00—Modifying the physical properties by deformation combined with, or followed by, heat treatment
- C21D8/12—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of articles with special electromagnetic properties
- C21D8/1205—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of articles with special electromagnetic properties involving a particular fabrication or treatment of ingot or slab
- C21D8/1211—Rapid solidification; Thin strip casting
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- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
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- C22C19/00—Alloys based on nickel or cobalt
- C22C19/07—Alloys based on nickel or cobalt based on cobalt
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- 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
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Abstract
SmCo of the present invention5Permanent magnetism thin strip magnet and preparation method thereof, is related to the magnet of the hard magnetic material containing rare earth metal and magnetic transition metal, and the element constituent general formula of the thin strip magnet is SmxCoyAlzCuuFev, by SmCo5It is to add different amounts of Al-Cu-Fe alloy in composition of alloy, is equivalent in SmCo5It is that regularly multiple elements design adds Al-Cu-Fe composition of alloy element in alloy, forms the strengthening mechanism of polynary multiphase, preparing element constituent general formula is SmxCoyAlzCuuFevSmCo5Permanent magnetism thin strip magnet, it overcomes after the prior art adds single element, while improving a kind of or limited several performances of magnet material, it frequently can lead to the reduction or variation of other performances, to make performance differ greatly compared with theoretical value, it when adding multiple element simultaneously, and can be followed without rule, study the defect made troubles to be subsequent.
Description
Technical field
Technical solution of the present invention is related to the magnet of the hard magnetic material containing rare earth metal and magnetic transition metal, specifically
It is SmCo5Permanent magnetism thin strip magnet and preparation method thereof.
Background technique
So far, SmCo5Permanent magnet is the magnetic material in intermetallic compound with maximum magnetocrystalline anisotropy.With
Nd-Fe-B based permanent magnet is compared, SmCo5Permanent magnet have that Curie temperature is high, coercive force temperature coefficient is low, chemical stability is good and
The features such as corrosion resistance and good, therefore it is widely used in the fields such as machinery, electronic device, medical treatment, aerospace.
Improve SmCo5Permanent magnet coercive force and the intensity of magnetization are the Main ways of numerous scholar's researchs at present.Reasonably to
SmCo5It is the common methods for improving its coercivity and the intensity of magnetization that other alloying elements are added in permanent magnet.Different elements can
Change distribution, the crystallite dimension etc. of magnetic phase in magnet to varying degrees, but its mechanism of action is different, such as eutectic
Point Al element is preferentially precipitated in forming core, forms molecule or Grain-Boundary Phase, can not only crystal grain be hindered to grow up, and to magnetic
Domain wall drift plays pinning effect, plays the role of refinement crystal grain, improves coercitive；Cu element can replace SmCo5In Co
Element enhances the magnetocrystalline anisotropy of alloy, so as to improve the intrinsic magnetic properties energy of magnet.In addition, the SmCo of doped metallic elements5
The preparation process and crystallization process of magnet can generate certain influence to its magnetic property.Gopalan et al. (Gopalan R,
Ping D H,Hono K.Microstructural evolution and the magnetic properties of
melt-spun Sm–Co–Cu–B and Sm–Co–Fe–Cu–B ribbons[J].Journal of Magnetism and
Magnetic Materials,2004,284(6):321-329.) using melt-quenching method prepare Sm12Co60Cu26B2Strip
And after 600 DEG C of Crystallizing treatment 10min, excellent magnetic property is obtained：IHc=8kOe, Ms=46emu/g analyze the strip
Microstructure and magnetic property discovery, the Co having a size of 10~50nm23B6Soft magnetic phase is present in intra-die in a manner of sediment
On crystal boundary, its presence shows that grain boundaries have an exchange-coupling interaction of hard magnetic phase and soft magnetic phase, while it is again with sediment
Form generates pinning effect to magnetic domain in matrix phase, to improve the coercivity of thin strip magnet.Document (Fukuzaki T,
Iwane H,Abe K,et al.Effect of Zr,V,Nb,Mo,and Ta substitutions on magnetic
properties and microstructure of melt-spun SmCo5magnets[J].Journal of Applied
Physics,2014, 115(17):Sm (Co 17A760.) is prepared with 50m/s FFR'S fuel assembly0.7Cu0.3)5Fe0.54Strip simultaneously passes through
After 800 DEG C of Crystallizing treatments, magnetic property is：IHc=17.6kOe, Ms=38.0emu/g, the results showed that doping Fe and Cu element
SmCo5Strip is by SmCo5Hard magnetic phase and α-Fe soft magnetism phase composition, while Fe and Cu element can not only substitute in annealing process
SmCo5In Co element, moreover it is possible to diffuse into SmCo5In the crystal boundary of hard magnetic phase, pinning magnetic domain improves the coercivity of thin strip magnet.
Saito et al. (Saito T, Nishio-Hamane D.Magnetic properties of SmCo5-xFex(x=0-4)
melt-spun ribbon[J].Journal of Alloys and Compounds,2014,585(3):423-427.) use
Melt-quenching method prepares SmCo5-xFex(x=0-4) strip, wherein SmCo2Fe3Strip obtains most after 600 DEG C of Crystallizing treatment 1h
Good magnetic property is：IHc=2.9kOe, Ms=100emu/g, analysis find that Fe element can replace the Co element in Sm-Co, lead
The coupling between Fe-Co is caused to be lower than Sm-Co, coercivity reduces, but Fe element itself has very high magnetic moment, Ke Yiti
The saturation magnetization of high alloy.CN105063517B discloses a kind of preparation of Sm-Co-Fe-Al-B amorphous base magnetically hard alloy
Method, although using the method for changing FFR'S fuel assembly and addition element, addition element type is still limited, and does not advise
Rule can be followed, and the coercivity for the magnet magnetic property prepared is also still lower.
The problems of the above-mentioned prior art is：By SmCo5After permanent magnet replaces part Co by single addition element,
SmCo5While one kind of permanent magnet or limited several performances obtain improving, other performances are but reduced；And it uses compound simultaneously
It adds multiple element and replaces part Co, although the SmCo of superior performance can be obtained5Permanent magnet, but addition element type is still limited,
It can be followed without rule again, make troubles for subsequent research, still have document report in SmCo without discovery so far5In permanent-magnet material
How regularly multiple elements design adds low melting point Al-Cu-Fe element.
Summary of the invention
The technical problem to be solved by the present invention is to：SmCo is provided5Permanent magnetism thin strip magnet and preparation method thereof, the SmCo5Forever
The element constituent general formula of magnetic thin strip magnet is SmxCoyAlzCuuFev, by SmCo5It is that not same amount is added in composition of alloy
Al-Cu-Fe alloy, be equivalent in SmCo5It is that regularly multiple elements design addition Al-Cu-Fe composition of alloy is first in alloy
Element forms the strengthening mechanism of polynary multiphase, and preparing element constituent general formula is SmxCoyAlzCuuFevSmCo5Permanent magnetism is thin
Magnet carrier overcomes after the prior art adds single element, is improving a kind of or limited several performances of magnet material
Meanwhile frequently can lead to the reduction or variation of other performances, so that performance be made to differ greatly compared with theoretical value, while adding a variety of
It when element, and can be followed without rule, study the defect made troubles to be subsequent.
The present invention solves technical solution used by the technical problem：SmCo5Permanent magnetism thin strip magnet is that element composition is logical
Formula is SmxCoyAlzCuuFevSmCo5Permanent magnetism thin strip magnet, in the composition general formula, symbol x, y, z, u and v indicate to limit member
The atomic percentage of plain compositing range, 14.42≤x≤15.76,71.19≤y≤77.78,5.35≤z≤11.92,1.09≤
U≤2.43,0.01≤v≤0.03, and met with atomic percentage：X+y+z+u+v=100, the strip with a thickness of 34~
84 μm, its intrinsic coercivity is 13.8~30.7kOe, 34.1~55.4emu/g of remanent magnetization, saturated magnetization at room temperature
Intensity is 40.8~70.5emu/g.
Above-mentioned SmCo5The preparation method of permanent magnetism thin strip magnet is in SmCo5It is that different amounts of Al- is added in composition of alloy
Cu-Fe alloy, is equivalent in SmCo5It is that regularly multiple elements design adds Al-Cu-Fe composition of alloy element in alloy, specifically
Steps are as follows：
The first step, raw material are prepared：
Element composition general formula Sm is calculated according to atomic percentage contentxCoyAlzCuuFevIn component quality percentage
Than weighing the desired amount of component raw material by the mass percent：Pure Sm, pure Co, pure Al, pure Cu and pure Fe, thus complete raw material
It prepares, in above-mentioned composition general formula, the atomic percentage of symbol x, y, z, u and v expression restriction element compositing range, 14.42≤
X≤15.76,71.19≤y≤77.78,5.35≤z≤11.92,1.09≤u≤2.43,0.01≤v≤0.03, and with atom
Percentages meet：X+y+z+u+v=100；
Second step, melt raw material prepare mother alloy ingot：
The raw material that the first step is prepared is put into vacuum melting furnace, to being vacuumized in furnace body, until in furnace body vacuum degree up to 6
×10-2Pa is hereinafter, the uniform Sm of ingredient is made to all fusings of the intracorporal raw material of furnace in meltingxCoyAlzCuuFevMaster alloy casting
Ingot；
Third step, SmCo5The preparation of fast quenching thin strap：
By Sm made from second stepxCoyAlzCuuFevMother alloy ingot is put into vacuum quick quenching furnace, to being vacuumized in furnace body,
Until in furnace body vacuum degree up to 5 × 10-2After Pa is hereinafter, again melt mother alloy ingot, by melt with the circle of 10~50m/s
Fast melt-quenching is carried out on the cooling roller of circular velocity rotation, SmCo is made5Fast quenching thin strap；
4th step, SmCo5The preparation of permanent magnetism thin strip magnet product:
By SmCo made from third step5Fast quenching thin strap is put into vacuum heat treatment furnace, is evacuated to 4 × 10-2Pa hereinafter,
30~120min is kept the temperature at 500~700 DEG C, and SmCo is thus made5Permanent magnetism thin strip magnet product, the strip with a thickness of 34~
84 μm, its intrinsic coercivity is 13.8~30.7kOe, 34.1~55.4emu/g of remanent magnetization, saturated magnetization at room temperature
Intensity is 40.8~70.5emu/g.
Above-mentioned SmCo5The preparation method of permanent magnetism thin strip magnet, in first step raw material preparation, preferred method is,
Element composition general formula Sm is calculated according to atomic percentage contentxCoyAlzCuuFevIn component mass percent, by should
Mass percent weighs the desired amount of component raw material：On the basis of pure Sm, pure Co, pure Al, pure Cu, pure Fe, then additional addition institute
The pure Sm of the mass percent 5% of pure Sm amount is weighed, and thus completes raw material and prepares.
Above-mentioned SmCo5The preparation method of permanent magnetism thin strip magnet, used raw material is all commercially available, used
Equipment be well known chemical industry equipment, used process operation is known to those skilled in the art
's.
Beneficial effects of the present invention are as follows：
Compared with prior art, the present invention has the characteristics that protrude as follows：
(1) Al-Cu-Fe alloy is made of Al, Cu, Fe element, through document (Laslo A, Colin C V, Isnard O.
Effect of the M/Co substitution on magnetocrystalline anisotropy and
magnetization in SmCo5-xMxCompounds (M=Ga；Al)[J].Journal of Applied Physics,
2010,107(9): 09A732-09A732-3.Suresh K,Gopalan R,Singh A K,et al.Coercivity of
Sm(Co0.9Cu0.1)4.8 melt-spun ribbons[J].Journal of Alloys and Compounds,2007,436
(1):358-363. Miyayaki T,Takahashi.M,Yang X B,et al.Formation of metastable
compounds and magnetic properties in rapidly quenched(Fe1-xCox)5Sm and(Fe1- xCox)7Sm2alloy systems[J].Journal of Applied Physics,1988,64:5974-5976.) know that Al is
Paramagnetic element, addition Al element can replace the Co atom of the position 3g, improve magnetocrystalline anisotropy, improve coercivity；Cu is
Nonmagnetic elements, magnetocrystalline anisotropy can be enhanced in addition Cu element, while Cu element forms richness Cu phase, pinning magnetic on crystal boundary
Coercivity is improved on farmland；Fe is ferromagnetic element, has high magnetic moment, can be improved the intensity of magnetization of magnet.
(2) SmCo provided by the invention5Permanent magnetism thin strip magnet and preparation method thereof is by SmCo5It is in composition of alloy
Different amounts of Al-Cu-Fe alloy is added, is equivalent in SmCo5It is that regularly multiple elements design addition Al-Cu-Fe is closed in alloy
Golden component forms the strengthening mechanism of polynary multiphase, and preparing element constituent general formula is SmxCoyAlzCuuFev's
SmCo5Permanent magnetism thin strip magnet.Low-melting alloy can be formed through Al-Cu-Fe ternary alloy three-partalloy known to ternary phase diagrams handbook, especially
In the eutectic point of ternary alloy three-partalloy, alloy melting point is minimum, and eutectic reaction can occur in the cooling procedure of melting and fast quenching, is formed low
Fusing point phase, low melting point can mutually be formed with the structure and composition of adjusting seed size and Grain-Boundary Phase, and refining grain size increases the thickness of crystal boundary
Degree weakens intercrystalline magnetostatically coupled effect, improves coercivity, while in SmCo5Multiple elements design adds Al-Cu-Fe in alloy
Find occur AlCo, SmCu soft magnetism phase in magnet after alloy.Therefore it is obtained in the present invention by hard magnetic phase, soft magnetism
Mutually and the alloy system of part amorphous composition, it is influenced inside magnet, is promoted by Nucleation Mechanism, pinning mechanism and coupling
SmCo5Permanent magnetism thin strip magnet product has excellent hard magnetic property.
(3) pure SmCo5The coercivity mechanism of permanent magnetism thin strip magnet only has Nucleation Mechanism, but after adulterating Al-Cu-Fe alloy
Not only there is Nucleation Mechanism inside its thin strip magnet, have also appeared magnetic domain pinning mechanism and part coupling mechanism, to improve coercive
Power.
(4) SmCo of Al-Cu-Fe alloy is adulterated5Low melting point is preferentially precipitated during fast melt-quenching in permanent magnetism thin strip magnet
Grain-Boundary Phase, Al, Cu low melting point element improves grain boundary structure by the wetability changed between matrix phase and Grain-Boundary Phase, weakens quiet
Magnetic coupling interaction, thus improve coercivity.
(5) in the SmCo of doping low melting point AlCuFe alloy5In permanent magnetism thin strip magnet, Fe is ferromagnetic element in certain journey
The intensity of magnetization of magnet is improved on degree.
Compared with prior art, the present invention has following marked improvement：
(1) pure SmCo5The magnetic property of permanent magnetism thin strip magnet is：Its intrinsic coercivity 0.6kOe at room temperature, remanent magnetization
Intensity 18.6emu/g, saturation magnetization 35.1emu/g, and SmCo made from the method for the present invention5Permanent magnetism thin strip magnet product
Magnetic property be：Its intrinsic coercivity is 13.8~30.7kOe, 34.1~55.4emu/g of remanent magnetization at room temperature, is satisfied
It is 40.8~70.5emu/g with the intensity of magnetization, magnetic property is significantly improved.
(2) preparation method of the invention uses vacuum quick quenching method, and this method technical maturity is stablized, and practicability is preferable, has
Lower cost efficiency and higher commercial value.
(3) present invention is by SmCo5The method that Al-Cu-Fe alloy is added in permanent magnet, solves SmCo5Permanent magnet is same
When the strengthening mechanism of polynary multiphase formed to further increase first generation permanent magnet by regularly compound addition multiple element
SmCo5It is the problem of alloy material magnetic property.
Detailed description of the invention
Present invention will be further explained below with reference to the attached drawings and examples.
Fig. 1 is Sm made from embodiment 115.76Co77.78Al5.35Cu1.09Fe0.011SmCo5The X of permanent magnetism thin strip magnet product
X ray diffraction map.
Fig. 2 is Sm made from embodiment 115.76Co77.78Al5.35Cu1.09Fe0.011SmCo5Permanent magnetism thin strip magnet product
Hysteresis loop.
Fig. 3 is Sm made from embodiment 515.42Co76.08Al7.05Cu1.44Fe0.011SmCo5The X of permanent magnetism thin strip magnet product
X ray diffraction map.
Fig. 4 is Sm made from embodiment 515.42Co76.08Al7.05Cu1.44Fe0.011SmCo5Permanent magnetism thin strip magnet product
Hysteresis loop.
Fig. 5 is Sm made from embodiment 615.08Co74.41Al8.71Cu1.78Fe0.021SmCo5The X of permanent magnetism thin strip magnet product
X ray diffraction map.
Fig. 6 is Sm made from embodiment 615.08Co74.41Al8.71Cu1.78Fe0.021SmCo5Permanent magnetism thin strip magnet product
Hysteresis loop.
Fig. 7 is Sm made from embodiment 714.43Co71.19Al11.92Cu2.43Fe0.031SmCo5Permanent magnetism thin strip magnet product
X ray diffracting spectrum.
Fig. 8 is Sm made from embodiment 714.43Co71.19Al11.92Cu2.43Fe0.031SmCo5Permanent magnetism thin strip magnet product
Hysteresis loop.
Specific embodiment
Below in conjunction with specific embodiment, the invention will be further described, but protection scope of the present invention is not limited only to down
State embodiment.
Embodiment 1
Preparing element composition formula is Sm15.76Co77.78Al5.35Cu1.09Fe0.01SmCo5Permanent magnetism thin strip magnet product, this is thin
Band with a thickness of 46 μm, its intrinsic coercivity is 30.7kOe, remanent magnetization 55.4emu/g at room temperature, and saturated magnetization is strong
Degree is 70.5emu/g.
The first step, raw material are prepared：
Calculating element composition formula according to atomic percentage content is Sm15.76Co77.78Al5.35Cu1.09Fe0.01In composition member
The mass percent of element, weighs the desired amount of component raw material by mass percentage：Pure Sm, pure Co, pure Al, pure Cu, pure Fe, match
Material process additionally adds the pure Sm that the mass percent 5% of pure Sm is weighed by above-mentioned raw materials proportion, thus completes raw material and prepares；
Second step, melt raw material prepare mother alloy ingot：
The raw material that the first step is prepared is put into the water jacketed copper crucible of vacuum arc melting furnace, to being vacuumized in furnace body, directly
Vacuum degree is up to 6 × 10 in furnace body-2Pa changes the temperature that electric arc generates hereinafter, be then charged with high-purity argon gas, by adjusting electric current,
Melting to the intracorporal raw material of furnace all melts, and the uniform Sm of ingredient is made15.76Co77.78Al5.35Cu1.09Fe0.01Mother alloy ingot；
Third step, SmCo5The preparation of fast quenching thin strap：
By Sm made from second step15.76Co77.78Al5.35Cu1.09Fe0.01Mother alloy ingot is put into vacuum quick quenching furnace, right
Vacuumized in furnace body, until in furnace body vacuum degree up to 5 × 10-2Pa is hereinafter, be then charged with argon gas, again with the mode of electric arc melting
After mother alloy ingot is melted, melt is subjected to fast melt-quenching on the cooling copper roller of the peripheral speed rotation with 40m/s, is made
Obtain SmCo5Fast quenching thin strap；
4th step, SmCo5The preparation of permanent magnetism thin strip magnet product:
By SmCo made from third step5Fast quenching thin strap is put into vacuum heat treatment burner hearth, is evacuated to 4 × 10 to burner hearth- 2Pa is protected hereinafter, being filled with high-purity argon gas, keeps the temperature 30min at 600 DEG C of crystallization temperature, and SmCo is thus made5Permanent magnetism thin strip magnet
Product, the strip with a thickness of 46 μm, at room temperature its intrinsic coercivity be 30.7kOe, remanent magnetization 55.4emu/g,
Saturation magnetization is 70.5emu/g.
Fig. 1 is Sm made from the present embodiment15.76Co77.78Al5.35Cu1.09Fe0.01The X-ray of permanent magnetism thin strip magnet product is spread out
Map is penetrated, its X-ray diffraction peak feature is obvious as seen from the figure, main phase SmCo5, Micro Phases AlCo, SmCu, while there is also
A certain amount of amorphous.Fig. 2 is Sm made from the present embodiment15.76Co77.78Al5.35Cu1.09Fe0.01The magnetic of permanent magnetism thin strip magnet product
Hysteresis curves, it is seen that Sm15.76Co77.78Al5.35Cu1.09Fe0.012After permanent magnetism thin strip magnet product magnetizes in 60kOe external magnetic field,
Measurement its remanent magnetization of magnetic property is 55.4emu/g in the comprehensive physical property measuring system of the PPMS that external magnetic field is 90 kOe, is satisfied
With the intensity of magnetization be 70.5emu/g, intrinsic coercivity 30.7kOe, the strip with a thickness of 46 μm.
Embodiment 2
Preparing element composition formula is Sm15.76Co77.78Al5.35Cu1.09Fe0.01SmCo5Permanent magnetism thin strip magnet product, this is thin
Band with a thickness of 84 μm, its intrinsic coercivity is 16.2kOe, remanent magnetization 32.4emu/g at room temperature, and saturated magnetization is strong
Degree is 38.2emu/g.
The first step, raw material are prepared：
With embodiment 1；
Second step, melt raw material prepare mother alloy ingot：
With embodiment 1；
Third step, SmCo5The preparation of fast quenching thin strap：
By Sm made from second step15.76Co77.78Al5.35Cu1.09Fe0.01Mother alloy ingot is put into vacuum quick quenching furnace, right
Vacuumized in furnace body, until in furnace body vacuum degree up to 5 × 10-2Pa is hereinafter, be then charged with argon gas, again with the mode of electric arc melting
After mother alloy ingot is melted, melt is subjected to fast melt-quenching on the cooling copper roller of the peripheral speed rotation with 10m/s, is made
Obtain SmCo5Fast quenching thin strap；
4th step, SmCo5The preparation of permanent magnetism thin strip magnet product:
By SmCo made from third step5Fast quenching thin strap is put into vacuum heat treatment burner hearth, is evacuated to 4 × 10 to burner hearth- 2Pa is protected hereinafter, being filled with high-purity argon gas, keeps the temperature 10min at 500 DEG C of crystallization temperature, and SmCo is thus made5Permanent magnetism thin strip magnet
Product, the strip with a thickness of 84 μm, at room temperature its intrinsic coercivity be 16.2kOe, remanent magnetization 32.4emu/g,
Saturation magnetization is 38.2emu/g.
Sm obtained by the present embodiment15.76Co77.78Al5.35Cu1.09Fe0.01SmCo5Permanent magnetism thin strip magnet product is in 60kOe
After magnetizing in external magnetic field, measuring its remanent magnetization of magnetic property on the vibration sample magnetometer that external magnetic field is 20kOe is
32.4emu/g, saturation magnetization 38.2emu/g, intrinsic coercivity 16.2kOe, strip with a thickness of 84 μm.
Embodiment 3
Preparing element composition formula is Sm15.76Co77.78Al5.35Cu1.09Fe0.01SmCo5Permanent magnetism thin strip magnet product, this is thin
Band with a thickness of 62 μm, its intrinsic coercivity is 21.8kOe, remanent magnetization 46.2emu/g at room temperature, and saturated magnetization is strong
Degree is 54.4emu/g.
The first step, raw material are prepared：
With embodiment 1；
Second step, melt raw material prepare mother alloy ingot：
With embodiment 1；
Third step, SmCo5The preparation of fast quenching thin strap：
By Sm made from second step15.76Co77.78Al5.35Cu1.09Fe0.01Mother alloy ingot is put into vacuum quick quenching furnace, right
Vacuumized in furnace body, until in furnace body vacuum degree up to 5 × 10-2Pa is hereinafter, be then charged with argon gas, again with the mode of electric arc melting
After mother alloy ingot is melted, melt is subjected to fast melt-quenching on the cooling copper roller of the peripheral speed rotation with 30m/s, is made
Obtain SmCo5Fast quenching thin strap；
4th step, SmCo5The preparation of permanent magnetism thin strip magnet product:
By SmCo made from third step5Fast quenching thin strap is put into vacuum heat treatment burner hearth, is evacuated to 4 × 10 to burner hearth- 2Pa is protected hereinafter, being filled with high-purity argon gas, keeps the temperature 90min at 550 DEG C of crystallization temperature, and SmCo is thus made5Permanent magnetism thin strip magnet
Product, the strip with a thickness of 62 μm, at room temperature its intrinsic coercivity be 21.8kOe, remanent magnetization 46.2emu/g,
Saturation magnetization is 54.4emu/g.
Sm obtained by the present embodiment15.76Co77.78Al5.35Cu1.09Fe0.01SmCo5Permanent magnetism thin strip magnet product is in 60kOe
After magnetizing in external magnetic field, measurement its remanent magnetization of magnetic property is strong in the comprehensive physical property measuring system of PPMS that external magnetic field is 90kOe
Degree be 46.2emu/g, saturation magnetization 54.4emu/g, intrinsic coercivity 21.8kOe, strip with a thickness of 62 μm.
Embodiment 4
Preparing element composition formula is Sm15.76Co77.78Al5.35Cu1.09Fe0.01SmCo5Permanent magnetism thin strip magnet product, this is thin
Band with a thickness of 34 μm, its intrinsic coercivity is 16.8kOe, remanent magnetization 37.1emu/g at room temperature, and saturated magnetization is strong
Degree is 43.6emu/g.
The first step, raw material are prepared：
With embodiment 1；
Second step, melt raw material prepare mother alloy ingot：
With embodiment 1；
Third step, SmCo5The preparation of fast quenching thin strap：
By Sm made from second step15.76Co77.78Al5.35Cu1.09Fe0.01Mother alloy ingot is put into vacuum quick quenching furnace, right
Vacuumized in furnace body, until in furnace body vacuum degree up to 5 × 10-2Pa is hereinafter, be then charged with argon gas, again with the mode of electric arc melting
After mother alloy ingot is melted, melt is subjected to fast melt-quenching on the cooling copper roller of the peripheral speed rotation with 50m/s, is made
Obtain SmCo5Fast quenching thin strap；
4th step, SmCo5The preparation of permanent magnetism thin strip magnet product:
By SmCo made from third step5Fast quenching thin strap is put into vacuum heat treatment burner hearth, is evacuated to 4 × 10 to burner hearth- 2Pa is protected hereinafter, being filled with high-purity argon gas, keeps the temperature 90min at 550 DEG C of crystallization temperature, and SmCo is thus made5Permanent magnetism thin strip magnet
Product, the strip with a thickness of 34 μm, at room temperature its intrinsic coercivity be 16.8kOe, remanent magnetization 37.1emu/g,
Saturation magnetization is 43.6emu/g.
Sm obtained by the present embodiment15.76Co77.78Al5.35Cu1.09Fe0.01SmCo5Permanent magnetism thin strip magnet product is in 60kOe
After magnetizing in external magnetic field, measuring its remanent magnetization of magnetic property on the vibration sample magnetometer that external magnetic field is 20kOe is
37.1 emu/g, saturation magnetization 43.6emu/g, intrinsic coercivity 16.8kOe, strip with a thickness of 34 μm.
Sm is made in table 1. under different FFR'S fuel assemblies and crystallization process15.76Co77.78Al5.35Cu1.09Fe0.01SmCo5Forever
The magnetic property of magnetic thin strip magnet product compares
Wherein：A indicates the magnetic property measured in the case where externally-applied magnetic field is 20kOe；B indicates to survey in the case where externally-applied magnetic field is 90kOe
The magnetic property obtained.
Embodiment 5
Preparing element composition formula is Sm15.42Co76.08Al7.05Cu1.44Fe0.01SmCo5Permanent magnetism thin strip magnet product, this is thin
Band with a thickness of 43 μm, its intrinsic coercivity is 13.8kOe, remanent magnetization 34.1emu/g at room temperature, and saturated magnetization is strong
Degree is 40.8emu/g.
The first step, raw material are prepared：
Calculating element composition formula according to atomic percentage content is Sm15.42Co76.08Al7.05Cu1.44Fe0.01In composition member
The mass percent of element, weighs the desired amount of component raw material by mass percentage：Pure Sm, pure Co, pure Al, pure Cu, pure Fe, match
Material process additionally adds the pure Sm that the mass percent 5% of pure Sm is weighed by above-mentioned raw materials proportion, thus completes raw material and prepares；
Second step, melt raw material prepare mother alloy ingot：
The raw material that the first step is prepared is put into the water jacketed copper crucible of vacuum arc melting furnace, to being vacuumized in furnace body, directly
Vacuum degree is up to 6 × 10 in furnace body-2Pa changes the temperature that electric arc generates hereinafter, be then charged with high-purity argon gas, by adjusting electric current,
Melting to the intracorporal raw material of furnace all melts, and the uniform Sm of ingredient is made15.42Co76.08Al7.05Cu1.44Fe0.01Mother alloy ingot；
Third step, SmCo5The preparation of fast quenching thin strap：
By Sm made from second step15.42Co76.08Al7.05Cu1.44Fe0.01Mother alloy ingot is put into vacuum quick quenching furnace, right
Vacuumized in furnace body, until in furnace body vacuum degree up to 5 × 10-2Pa is hereinafter, be then charged with argon gas, again with the mode of electric arc melting
After mother alloy ingot is melted, melt is subjected to fast melt-quenching on the cooling copper roller of the peripheral speed rotation with 40m/s, is made
Obtain SmCo5Fast quenching thin strap；
4th step, SmCo5The preparation of permanent magnetism thin strip magnet product:
By SmCo made from third step5Fast quenching thin strap is put into vacuum heat treatment burner hearth, is evacuated to 4 × 10 to burner hearth- 2Pa is protected hereinafter, being filled with high-purity argon gas, keeps the temperature 30min at 600 DEG C of crystallization temperature, and SmCo is thus made5Permanent magnetism thin strip magnet
Product, the strip with a thickness of 43 μm, at room temperature its intrinsic coercivity be 13.8kOe, remanent magnetization 34.1emu/g,
Saturation magnetization is 40.8emu/g.
Fig. 3 is Sm made from the present embodiment15.42Co76.08Al7.05Cu1.44Fe0.01The X-ray of permanent magnetism thin strip magnet product is spread out
Map is penetrated, its X-ray diffraction peak feature is obvious as seen from the figure, main phase SmCo5, Micro Phases are AlCo phase, while there is also one
Quantitative amorphous.Fig. 4 is Sm made from the present embodiment15.42Co76.08Al7.05Cu1.44Fe0.01The magnetic hysteresis of permanent magnetism thin strip magnet product
Loop line, it is seen that Sm15.76Co77.78Al5.35Cu1.09Fe0.012After thin strip magnet product magnetizes in 60kOe external magnetic field, in external magnetic field
It is 34.1emu/g to measure its remanent magnetization of magnetic property on the vibration sample magnetometer of 20kOe, saturation magnetization is
40.8emu/g, intrinsic coercivity 13.8kOe, the strip with a thickness of 43 μm.
Embodiment 6
Preparing element composition formula is Sm15.08Co74.41Al8.71Cu1.78Fe0.02SmCo5Permanent magnetism thin strip magnet product, this is thin
Band with a thickness of 48 μm, its intrinsic coercivity is 21.5kOe, remanent magnetization 45.5emu/g at room temperature, and saturated magnetization is strong
Degree is 53.3emu/g.
The first step, raw material are prepared：
Calculating element composition formula according to atomic percentage content is Sm15.08Co74.41Al8.71Cu1.78Fe0.02In composition member
The mass percent of element, weighs the desired amount of component raw material by mass percentage：Pure Sm, pure Co, pure Al, pure Cu, pure Fe, match
Material process additionally adds the pure Sm that the mass percent 5% of pure Sm is weighed by above-mentioned raw materials proportion, thus completes raw material and prepares；
Second step, melt raw material prepare mother alloy ingot：
The raw material that the first step is prepared is put into the water jacketed copper crucible of vacuum arc melting furnace, to being vacuumized in furnace body, directly
Vacuum degree is up to 6 × 10 in furnace body-2Pa changes the temperature that electric arc generates hereinafter, be then charged with high-purity argon gas, by adjusting electric current,
Melting to the intracorporal raw material of furnace all melts, and the uniform Sm of ingredient is made15.08Co74.41Al8.71Cu1.78Fe0.019Mother alloy ingot；
Third step, SmCo5The preparation of fast quenching thin strap：
By Sm made from second step15.08Co74.41Al8.71Cu1.78Fe0.019Mother alloy ingot is put into vacuum quick quenching furnace, right
Vacuumized in furnace body, until in furnace body vacuum degree up to 5 × 10-2Pa is hereinafter, be then charged with argon gas, again with the mode of electric arc melting
After mother alloy ingot is melted, melt is subjected to fast melt-quenching on the cooling copper roller of the peripheral speed rotation with 40m/s, is made
Obtain SmCo5Fast quenching thin strap；
4th step, SmCo5The preparation of permanent magnetism thin strip magnet product:
By SmCo made from third step5Fast quenching thin strap is put into vacuum heat treatment burner hearth, is evacuated to 4 × 10 to burner hearth- 2Pa is protected hereinafter, being filled with high-purity argon gas, keeps the temperature 30min at 600 DEG C of crystallization temperature, and SmCo is thus made5Permanent magnetism thin strip magnet
Product, the strip with a thickness of 48 μm, at room temperature its intrinsic coercivity be 21.5kOe, remanent magnetization 45.5emu/g,
Saturation magnetization is 53.3emu/g.
Fig. 5 is Sm made from the present embodiment15.08Co74.41Al8.71Cu1.78Fe0.02The X-ray of permanent magnetism thin strip magnet product is spread out
Map is penetrated, its X-ray diffraction peak feature is obvious as seen from the figure, main phase SmCo5, Micro Phases AlCo, SmCu, while there is also
A certain amount of amorphous.Fig. 6 is Sm made from the present embodiment15.08Co74.41Al8.71Cu1.78Fe0.02The magnetic of permanent magnetism thin strip magnet product
Hysteresis curves, it is seen that Sm15.08Co74.41Al8.71Cu1.78Fe0.02After thin strip magnet product magnetizes in 60kOe external magnetic field, in outer magnetic
Measurement its remanent magnetization of magnetic property is 45.5emu/g in the comprehensive physical property measuring system of the PPMS that field is 90kOe, is saturated magnetic
Change intensity be 53.3emu/g, intrinsic coercivity 21.5kOe, the strip with a thickness of 48 μm.
Embodiment 7
Preparing element composition formula is Sm14.43Co71.19Al11.92Cu2.43Fe0.03SmCo5Permanent magnetism thin strip magnet product, this is thin
Band with a thickness of 51 μm, its intrinsic coercivity is 17.4kOe, remanent magnetization 40.2emu/g at room temperature, and saturated magnetization is strong
Degree is 47.4emu/g.
The first step, raw material are prepared：
Calculating element composition formula according to atomic percentage content is Sm14.43Co71.19Al11.92Cu2.43Fe0.03In composition member
The mass percent of element, weighs the desired amount of component raw material by mass percentage：Pure Sm, pure Co, pure Al, pure Cu, pure Fe, match
Material process additionally adds the pure Sm that the mass percent 5% of pure Sm is weighed by above-mentioned raw materials proportion, thus completes raw material and prepares；
Second step, melt raw material prepare mother alloy ingot：
The raw material that the first step is prepared is put into the water jacketed copper crucible of vacuum arc melting furnace, to being vacuumized in furnace body, directly
Vacuum degree is up to 6 × 10 in furnace body-2Pa changes the temperature that electric arc generates hereinafter, be then charged with high-purity argon gas, by adjusting electric current,
Melting to the intracorporal raw material of furnace all melts, and the uniform Sm of ingredient is made14.43Co71.19Al11.92Cu2.43Fe0.03Mother alloy ingot；
Third step, SmCo5The preparation of fast quenching thin strap：
By Sm made from second step14.43Co71.19Al11.92Cu2.43Fe0.03Mother alloy ingot is put into vacuum quick quenching furnace, right
Vacuumized in furnace body, until in furnace body vacuum degree up to 5 × 10-2Pa is hereinafter, be then charged with argon gas, again with the mode of electric arc melting
After mother alloy ingot is melted, melt is subjected to fast melt-quenching on the cooling copper roller of the peripheral speed rotation with 40m/s, is made
Obtain SmCo5Fast quenching thin strap；
4th step, SmCo5The preparation of permanent magnetism thin strip magnet product:
By SmCo made from third step5Fast quenching thin strap is put into vacuum heat treatment burner hearth, is evacuated to 4 × 10 to burner hearth- 2Pa is protected hereinafter, being filled with high-purity argon gas, keeps the temperature 30min at 600 DEG C of crystallization temperature, and SmCo is thus made5Permanent magnetism thin strip magnet
Product, the strip with a thickness of 51 μm, at room temperature its intrinsic coercivity be 17.4kOe, remanent magnetization 40.2emu/g,
Saturation magnetization is 47.4emu/g.
Fig. 7 is Sm made from the present embodiment14.43Co71.19Al11.92Cu2.43Fe0.03The X-ray of permanent magnetism thin strip magnet product is spread out
Map is penetrated, its X-ray diffraction peak feature is obvious as seen from the figure, main phase SmCo5, Micro Phases AlCo, SmCu, while there is also
A certain amount of amorphous.Fig. 8 is Sm made from the present embodiment14.43Co71.19Al11.92Cu2.43Fe0.03The magnetic of permanent magnetism thin strip magnet product
Hysteresis curves, it is seen that Sm14.43Co71.19Al11.92Cu2.43Fe0.03After thin strip magnet product magnetizes in 60kOe external magnetic field, in outer magnetic
Measurement its remanent magnetization of magnetic property is 40.2emu/g, saturation magnetization on the vibrating specimen magnetometer that field is 20kOe
For 47.4emu/g, intrinsic coercivity 17.4kOe, the strip with a thickness of 51 μm.
In above-described embodiment, used raw material is all commercially available, and used equipment is well knownization
Construction equipment, used process operation are known to those skilled in the art.
Claims (2)
1.SmCo5Permanent magnetism thin strip magnet, it is characterised in that：It is that element forms general formula as SmxCoyAlzCuuFevSmCo5Permanent magnetism is thin
Magnet carrier, in the composition general formula, symbol x, y, z, u and v indicate to limit the atomic percentage of element compositing range, 14.42≤x
≤ 15.76,71.19≤y≤77.78,5.35≤z≤11.92,1.09≤u≤2.43,0.01≤v≤0.03, and with atom hundred
Divide and meets than meter：X+y+z+u+v=100, the strip with a thickness of 34~84 μm, at room temperature its intrinsic coercivity be 13.8~
30.7kOe, 34.1~55.4emu/g of remanent magnetization, saturation magnetization are 40.8~70.5emu/g.
2. SmCo as described in claim 15The preparation method of permanent magnetism thin strip magnet, it is characterised in that specific step is as follows：
The first step, raw material are prepared：
Element composition general formula Sm is calculated according to atomic percentage contentxCoyAlzCuuFevIn component mass percent,
The desired amount of component raw material is weighed by the mass percent：Thus pure Sm, pure Co, pure Al, pure Cu and pure Fe complete raw material and match
System, in above-mentioned composition general formula, the atomic percentage of symbol x, y, z, u and v expression restriction element compositing range, 14.42≤x≤
15.76,71.19≤y≤77.78,5.35≤z≤11.92,1.09≤u≤2.43,0.01≤v≤0.03, and with atomic percent
Meet than meter：X+y+z+u+v=100；
Second step, melt raw material prepare mother alloy ingot：
The raw material that the first step is prepared is put into vacuum melting furnace, to being vacuumized in furnace body, until in furnace body vacuum degree up to 6 × 10-2Pa is hereinafter, the uniform Sm of ingredient is made to all fusings of the intracorporal raw material of furnace in meltingxCoyAlzCuuFevMother alloy ingot；
Third step, SmCo5The preparation of fast quenching thin strap：
By Sm made from second stepxCoyAlzCuuFevMother alloy ingot is put into vacuum quick quenching furnace, to being vacuumized in furnace body, until
Vacuum degree is up to 5 × 10 in furnace body-2After Pa is hereinafter, again melt mother alloy ingot, by melt in the circumference speed with 10~50m/s
It spends on the cooling roller of rotation and carries out fast melt-quenching, SmCo is made5Fast quenching thin strap；
4th step, SmCo5The preparation of permanent magnetism thin strip magnet product:
By SmCo made from third step5Fast quenching thin strap is put into vacuum heat treatment furnace, is evacuated to 4 × 10-2Pa is hereinafter, 500
30~120min is kept the temperature at~700 DEG C, and SmCo is thus made5Permanent magnetism thin strip magnet product, the strip with a thickness of 34~84 μm,
Its intrinsic coercivity is 13.8~30.7kOe, 34.1~55.4emu/g of remanent magnetization, saturation magnetization at room temperature
For 40.8~70.5emu/g.
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Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| JP2004111985A (en) * | 1999-03-30 | 2004-04-08 | Hitachi Metals Ltd | Compound and method for producing the same |
| CN102403117A (en) * | 2011-10-09 | 2012-04-04 | 河北工业大学 | Preparation method of Sm-Co-based amorphous nanocrystalline thin-strip magnet |
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| CN1145538C (en) * | 1999-05-13 | 2004-04-14 | 中国科学院物理研究所 | Preparation of anisotropic SmCo5Quick quenching method for permanent magnet material |
| US20110200839A1 (en) * | 2010-02-17 | 2011-08-18 | Melania Marinescu | Rare Earth Laminated, Composite Magnets With Increased Electrical Resistivity |
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| JP2004111985A (en) * | 1999-03-30 | 2004-04-08 | Hitachi Metals Ltd | Compound and method for producing the same |
| CN102403117A (en) * | 2011-10-09 | 2012-04-04 | 河北工业大学 | Preparation method of Sm-Co-based amorphous nanocrystalline thin-strip magnet |
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