CN108347105A - Permanent magnet, electric rotating machine and vehicle - Google Patents
Permanent magnet, electric rotating machine and vehicle Download PDFInfo
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- CN108347105A CN108347105A CN201710817480.4A CN201710817480A CN108347105A CN 108347105 A CN108347105 A CN 108347105A CN 201710817480 A CN201710817480 A CN 201710817480A CN 108347105 A CN108347105 A CN 108347105A
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K1/00—Details of the magnetic circuit
- H02K1/02—Details of the magnetic circuit characterised by the magnetic material
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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
- H01F1/059—Alloys characterised by their composition containing rare earth metals and magnetic transition metals, e.g. SmCo5 and Va elements, e.g. Sm2Fe17N2
- H01F1/0596—Alloys characterised by their composition containing rare earth metals and magnetic transition metals, e.g. SmCo5 and Va elements, e.g. Sm2Fe17N2 of rhombic or rhombohedral Th2Zn17 structure or hexagonal Th2Ni17 structure
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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
- C22C38/001—Ferrous alloys, e.g. steel alloys containing N
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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
- C22C38/005—Ferrous alloys, e.g. steel alloys containing rare earths, i.e. Sc, Y, Lanthanides
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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
- C22C38/02—Ferrous alloys, e.g. steel alloys containing silicon
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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
- C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
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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
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- H—ELECTRICITY
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- 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
- H01F1/0555—Alloys characterised by their composition containing rare earth metals and magnetic transition metals, e.g. SmCo5 pressed, sintered or bonded together
- H01F1/0557—Alloys characterised by their composition containing rare earth metals and magnetic transition metals, e.g. SmCo5 pressed, sintered or bonded together sintered
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- 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
- H01F1/06—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 in the form of particles, e.g. powder
- H01F1/08—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 in the form of particles, e.g. powder pressed, sintered, or bound together
- H01F1/086—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 in the form of particles, e.g. powder pressed, sintered, or bound together sintered
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- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F41/00—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties
- H01F41/02—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties for manufacturing cores, coils, or magnets
- H01F41/0253—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties for manufacturing cores, coils, or magnets for manufacturing permanent magnets
- H01F41/0266—Moulding; Pressing
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F7/00—Magnets
- H01F7/02—Permanent magnets [PM]
- H01F7/0231—Magnetic circuits with PM for power or force generation
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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
- B22F2304/00—Physical aspects of the powder
- B22F2304/10—Micron size particles, i.e. above 1 micrometer up to 500 micrometer
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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
- B22F3/00—Manufacture of workpieces or articles from metallic powder characterised by the manner of compacting or sintering; Apparatus specially adapted therefor ; Presses and furnaces
- B22F3/12—Both compacting and sintering
- B22F3/16—Both compacting and sintering in successive or repeated steps
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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
- B22F9/00—Making metallic powder or suspensions thereof
- B22F9/02—Making metallic powder or suspensions thereof using physical processes
- B22F9/04—Making metallic powder or suspensions thereof using physical processes starting from solid material, e.g. by crushing, grinding or milling
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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
- B22F9/00—Making metallic powder or suspensions thereof
- B22F9/16—Making metallic powder or suspensions thereof using chemical processes
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- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C2202/00—Physical properties
- C22C2202/02—Magnetic
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Abstract
The present invention inhibits the reduction of the reduction and density of the intensity of magnetization of permanent magnet.Permanent magnet is with composition formula：RNX(CrpSiqM1‑p‑q)ZTSIt indicates.Permanent magnet includes having Th2Ni17Type, Th2Zn17Type and TbCu7The main phase of at least one of type crystal structure, and contain the secondary phase more more R than the R in main phase.
Description
The application is with the Japanese patent application 2017-010979 (applyings date：1/25/2017) based on, above-mentioned application is enjoyed
Priority.The application includes the full content of above-mentioned application by quoting above-mentioned application.
Technical field
The present invention relates to permanent magnet, electric rotating machine and vehicles.
Background technology
As high performance permanent magnet, it is known that the rare earth element magnets such as Sm-Co based magnets and Nd-Fe-B based magnets.Rare earth
Class magnet is applied to electric appliances and hybrid vehicle (the Hybrid Electric such as motor, loud speaker, metrical instrument
Vehicle：) and electric vehicle (Electric Vehicle HEV：The vehicles such as EV).In recent years, to the miniaturization of various electric appliances
It is required that improve, and the increase in demand of the motor used in HEV and EV.In order to cope with these requirements, it is desirable to develop with most
Big magnetic energy product (BHmax) the permanent magnet for rising to target.
As the ferromagnetic material of the permanent magnet for obtaining higher performance, such as promising is rare earth element and Fe etc.
The combination of transition metal element.Sm-Fe-N based materials have the high saturation and magnetic intensity being equal to Nd-Fe-B based materials and surmount
The larger magnetic anisotropy of Nd-Fe-B based materials, it is therefore contemplated that the application as high-performance magnet.However, Sm-Fe-N based magnets
Material has the shortcomings that thermally decompose when heating at about 550 DEG C or more of temperature.Therefore, Sm-Fe-N based materials can not lead to
Oversintering and be densified.
For this point, such as following method is inquired into：Mixed melting point is about in Sm-Fe-N based magnet material powders
420 DEG C of Zn is heating and curing as metal-to-metal adhesive at a temperature of the degree that Sm-Fe-N based magnets material will not thermally decompose,
To obtain the Sm-Fe-N based magnet bodies with high relative density.
However, the curing by using Zn as the Sm-Fe-N based magnet materials of metal-to-metal adhesive, although can obtain
Permanent magnet with higher density, but replaced by Zn in the Fe of Sm-Fe-N in process that is heating and curing, the magnetic of permanent magnet
Change strength reduction.
Invention content
Project to be solved by this invention is the reduction of the intensity of magnetization and density that inhibit permanent magnet.
The permanent magnet of embodiment is with composition formula：RNX(CrpSiqM1-p-q)ZTSIndicate (R be selected from rare earth element, Zr,
At least one element of Nb and Hf, M are at least one elements selected from Fe and Co, and T is to be selected from Cu, Ga, Al, In and Sn at least
A kind of element, X are the atomic ratios of satisfaction 0.5≤X≤2.0, and p is the atomic ratio of satisfaction 0.005≤p≤0.2, and q is satisfaction 0.005
The atomic ratio of≤q≤0.2, Z are the atomic ratios of satisfaction 4≤Z≤13, and S is the atomic ratio of satisfaction 0.005≤S≤2.0).Permanent magnetic
Iron includes having Th2Ni17Type, Th2Zn17Type and TbCu7The main phase of at least one of type crystal structure, and containing than in main phase
The more R of R secondary phase.
Description of the drawings
Fig. 1 is the schematic diagram of the section structure of permanent magnet.
Fig. 2 is the figure of an example for the SEM observation images for indicating permanent magnet.
Fig. 3 is the schematic diagram for the configuration example for indicating motor.
Fig. 4 is the schematic diagram for the configuration example for indicating variable magnetic flux motor.
Fig. 5 is the schematic diagram for the configuration example for indicating generator.
Fig. 6 is the schematic diagram for the configuration example for indicating vehicle.
Fig. 7 is the schematic diagram for the configuration example for indicating vehicle.
(symbol description)
1 ... main phase, 2 ... secondary phases, 3 ... oxide phases, 21 ... Permanent Magnet motors, 22 ... stators, 23 ... rotors, 24 ...
Iron core, 25 ... permanent magnets, 31 ... variable magnetic flux motors, 32 ... stators, 33 ... rotors, 34 ... iron cores, 35 ... fixed magnets,
36 ... variable magnets, 41 ... generators, 42 ... stators, 43 ... rotors, 44 ... turbines, 45 ... axis, 46 ... brushes, 100 ... railways
Vehicle, 101 ... electric rotating machines, 200 ... automobiles, 201 ... electric rotating machines.
Specific implementation mode
Hereinafter, being described with reference to embodiments of the present invention.The component for indicating the same symbol indicates same component.Separately
Outside, attached drawing is signal or conceptual, and proportionality coefficient of size between the relationship of the thickness and width of each section, part etc. is not
Necessarily it is the same as the actual situation.In addition, even if indicate with a part in the case of, difference with reference to the accompanying drawings, sometimes also with
Different size each other and proportionality coefficient indicates.
(first embodiment)
The example of the permanent magnet of embodiment is illustrated.Fig. 1 is the knot for the permanent magnet for indicating present embodiment
The schematic diagram of structure example.It includes main phase 1 and the secondary phase that is set between main phase 1 that permanent magnet, which has two dimensional tissues, two dimensional tissue,
2.Main phase 1 is the highest phase of volume occupation rate in each crystalline phase and amorphous phase in permanent magnet.Secondary phase 2 is volume occupation rate than master
The low phase of phase 1.Secondary phase 2 has the crystalline phase or amorphous phase different from main phase 1.The shape of main phase 1 and secondary phase 2 is not limited to shown in Fig. 1
Shape.Secondary phase 2 can be with the alloy phase of R and T.
The composition of the permanent magnet of embodiment is indicated with following composition formulas (1).
RNX(CrpSiqM1-p-q)ZTS…(1)
(in formula, R is at least one element selected from rare earth element, Zr, Nb and Hf.M is at least one selected from Fe and Co
Element.T is at least one element selected from Cu, Ga, Al, In and Sn.X is the atomic ratio of satisfaction 0.5≤X≤2.0.P is to meet
The atomic ratio of 0.005≤p≤0.2.Q is the atomic ratio of satisfaction 0.005≤q≤0.2.Z is the atomic ratio of satisfaction 4≤Z≤13.S
It is the atomic ratio of satisfaction 0.005≤S≤2.0.)
In composition formula (1), R is at least one element selected from rare earth element, zirconium (Zr), niobium (Nb) and hafnium (Hf).As
Rare earth element can be enumerated such as yttrium (Y), lanthanum (La), cerium (Ce), praseodymium (Pr), neodymium (Nd) and samarium (Sm).As R, can use
1 kind of element can also use multiple element.R assigns magnet with larger magnetic anisotropy and higher coercivity.It is preferred that R
50 atom % or more are Sm.Preferably the 70 atom % or more of R are Sm.It, can be with good by using rare earth element as R
Reproducibility improves the performance of permanent magnet, especially coercivity.
Nitrogen (N) is primarily present in the interstitial positions (intrusion position) of main phase 1.If containing nitrogen in crystal, lattice expands,
Electronic structure changes.Thereby, the Curie temperature of permanent magnet, magnetic anisotropy and saturation magnetization improve.When R is 1
When, the atomic ratio of nitrogen is 0.5 or more 2.0 or less.That is, X is the atomic ratio of satisfaction 0.5≤X≤2.0.More preferable X is satisfaction 1.0
The atomic ratio of≤X≤1.5.In the case that X is less than 0.5, obtains with being unable to fully to contain in permanent magnet and be imitated caused by nitrogen
Fruit.If X is more than 2.0, the reductions such as saturation magnetization of permanent magnet.
The a part of of N can be by least one element substitution selected from hydrogen (H), boron (B) and carbon (C).As above-mentioned displacement
Element can use a kind of element, can also use multiple element.Above-mentioned substitutional element shows effect same as above-mentioned nitrogen.
But if excessively replacing nitrogen, the reduction etc. of the magnetic anisotropy of permanent magnet can be incurred.It is therefore preferable that the 50 of nitrogen are former
Sub- % or less is by above-mentioned element substitution.
M is at least one element selected from iron (Fe) and cobalt (Co).As M, a kind of element can be used, can also be used
Multiple element.M is the magnetized element for mainly undertaking permanent magnet.By comparing M is contained in large quantities, permanent magnet can be improved
Saturation magnetization.But if the content of M is excessive, the equal precipitations of α-Fe, coercivity reduces.
It is preferred that the 50 atom % or more of M are Fe.The 70 atom % or more of more preferable M are Fe.Fe in M is particularly helpful to forever
The raising of the intensity of magnetization of long magnet.By making permanent magnet contain the part that Co is used as M, the Curie temperature of permanent magnet carries
The thermal stability of height, permanent magnet improves.In addition, the coercivity of permanent magnet also improves.
The a part of of M can be by selected from titanium (Ti), vanadium (V), tantalum (Ta), molybdenum (Mo), tungsten (W), manganese (Mn), nickel (Ni), zinc
(Zn) and at least one element substitution of germanium (Ge).As substitutional element, a kind of element can be used, a variety of members can also be used
Element.Replacing the element of a part of M contributes to magnetic characteristic, for example coercitive raising.But if excessively by a part of M
Displacement, the then intensity of magnetization reduction of permanent magnet.It is therefore preferable that the 10 atom % or less of the 20 atom % or less of M, more preferable M
By above-mentioned element substitution.
Chromium (Cr) or silicon (Si) make the heat decomposition temperature of R-M-N systems permanent magnet increase.Chromium (Cr) or silicon (Si) are mainly set
The site shared by M in change owner phase.Cr can improve the thermal stability of crystal by changing the quantity of the d electronics in crystal.Si
The thermal stability of crystal can be improved by reducing the size of lattice.It, can by making to contain both Cr and Si in permanent magnet
The thermal stability of R-M-N systems permanent magnet is improved to the state that can be applicable in sintering circuit.
The content of Cr in permanent magnet relative to M and Cr and Si total content be 0.5 atom % or more, 20 atom % with
Under (0.005≤p≤0.2).If the content of Cr is very few, effect is obtained with being unable to fully.If the content of Cr is excessive, can
Incur the reduction of saturation magnetization of permanent magnet etc..The content of Cr is more preferably 3 originals relative to the total content of M and Cr and Si
18 atom % of sub- % or more or less.The content of Cr is more preferably 5 atom % or more 15 relative to the total content of M and Cr and Si
Atom % or less.
The content of Si in permanent magnet relative to M and Cr and Si total content be 0.5 atom % or more, 20 atom % with
Under (0.005≤q≤0.2).If the content of Si is very few, the effect of Si is obtained with being unable to fully.If the content of Si is excessive,
The reduction of saturation magnetization of permanent magnet etc. can then be incurred.The content of Si is preferably 1 relative to the total content of M and Cr and Si
Atom % or more 15 atom % or less.The content of Si is more preferably 1 atom % or more, 10 originals relative to the total content of M and Cr and Si
Sub- % or less.
The total content of Cr and Si is preferably 5 atom % or more, 20 atom % or less relative to the total content of M and Cr and Si.Cr
With the total content of Si 8 atom % or more, 15 atom % or less are more preferably relative to the total content of M and Cr and Si.
T is at least one element selected from copper (Cu), gallium (Ga), aluminium (Al), indium (In) and tin (Sn).It is preferred that the 50 of T are former
Sub- % or more is Cu.T be can by R alloyings be embedded in gap between main phase, the density for improving permanent magnet element.When
When R is 1, the atomic ratio of T is 0.005 or more 2.0 or less.That is, S is the atomic ratio of satisfaction 0.005≤S≤2.0.T-phase is for R's
In the case that atomic ratio is less than 0.005, the effect for the density for improving permanent magnet is obtained with being unable to fully.If T-phase is for R's
Atomic ratio is more than 2.0, then the reductions such as saturation magnetization of permanent magnet.More preferable S is to meet 0.1 or more 0.5 original below
Sub- ratio.
Main phase 1 has Th2Ni17Type, Th2Zn17Type and TbCu7At least one of type crystal structure.Main phase 1 has for example
Sm2(Fe,Cr,Si)17N3Equal R- (M, Cr, Si)-N phases.
Secondary phase 2 also contains T containing more more R than R contained in main phase 1.Here, " containing more than R contained in main phase 1
More R " refers to；By the composition of main phase 1 with composition formula (A) RaNX(CrpSiqM1-p-q)ZIndicate, by the composition of secondary phase 2 with composition formula
(B)RbTSWhen expression, a and b are the numbers for meeting a/ (a+X+Z) ＜ b/ (b+S).
In the permanent magnet of embodiment, T is mainly included in the form of the alloy with R in permanent magnet.R-T alloys are made
Mutually exist to fill up the secondary of the gap in permanent magnet.R- (M, Cr, Si)-N based magnet materials especially containing Cr and Si
Because having high thermal stability, can be formed has dystectic R-T alloys phase, under such high-melting-point, if it is not
R-M-N based magnet materials containing Cr, Si, then thermally decomposed.
The analysis of the composition of permanent magnet passes through inductive coupling light-emitting plasma (Inductively Coupled
Plasma：ICP) emission spectrometry carries out.In the analysis of the composition of permanent magnet, using by magnet jet mill or ball mill
The powder below of whole 3% (alloy powder) is accounted in terms of volume % etc. the powder that grain size is 10 μm or more is ground into.From gained
10 samples of random acquisition, analyze the sample in powder.After removing maximum value and minimum value in the measured value of analysis
It is averaged, the composition as permanent magnet.
Fig. 2 is to indicate that the SEM (Scanning Electron Microscope, scanning electron microscope) of permanent magnet is seen
Examine the figure of an example of image.Tissue shown in Fig. 2 also has oxide phase 3 other than main phase 1 and secondary phase 2.As oxide phase
3, the oxide that can enumerate such as R is equal.
Oxide phase 3 in permanent magnet is preferably less.The volume ratio of oxide phase in permanent magnet is preferably whole
The 5.2% of a magnet is hereinafter, more preferably 1.5% or less.By reducing oxide phase, the saturated magnetization of permanent magnet can be improved
Intensity.
Main phase 1, secondary phase 2 and oxide phase 3 can for example pass through SEM-EDX (scanning electron microscope-energy dispersion X-ray
Spectrum, Scanning Electron Microscope-Energy Dispersive X-ray Spectroscopy), TEM-
EDX (transmission electron microscopes-energy dispersion X-ray spectrum Transmission Electron Microscope-Energy
Dispersive X-ray Spectroscopy) the methods of determine.By TEM-EDX, by electron beam cover in main phase
Part and Grain-Boundary Phase part etc., can quantify the constitution element ratio of each section, and can identify crystal structure.
The identification method for using the main phase 1 of SEM-EDX, secondary phase 2, oxide phase 3 is illustrated below.Obtain viewing surface
The SEM image of 50 μm of 50 μ m of product.In SEM image, continuum of the concentration of O elements more than 40 atom % is defined as
Oxide phase, based on continuum definition of the concentration less than 20 atom % by the concentration of O elements less than 40 atom % and R element
The concentration of O elements is defined as secondary phase by phase less than continuum of the concentration of 40 atom % and R element more than 20 atom %.
The R element ratio of main phase is the R element ratio for 5 points for measuring the phase for being defined as main phase in same field of view
Example is worth obtained by being averaged, and the R element ratio of secondary phase is also the same.In addition, by the main phase defined in a manner described, secondary phase and oxygen
The area ratio of compound phase is calculated directly as volume ratio, which is defined as to the volume ratio of the oxide phase in permanent magnet
Example.For each block of permanent magnet, the R element ratio of main phase is calculated respectively by the process described above in 5 field of view
Example, the R element ratio of secondary phase, oxide phase volume ratio resulting value is defined as the permanent magnet by its arithmetic average
The volume ratio of the R element ratio of main phase, the R element ratio of secondary phase, oxide phase.
The density of permanent magnet can be improved by the secondary phase containing a large amount of R in the permanent magnet of embodiment.For example, implementing
The density of the permanent magnet of mode is up to 6.5g/cm3More than.The density of permanent magnet is to measure permanent magnet in an atmosphere respectively
With in water quality, pass through Archimedes method calculate.At this point, calculating separately 10 times for every a sample, forever from gained
It is averaged after removing maximum value and minimum value in the density of long magnet, is defined as the density of permanent magnet.
Then, manufacturer's rule of the permanent magnet of embodiment is illustrated.First, the member containing specified amount is manufactured
The alloy powder of element.Alloy powder is indicated with composition formula (2).
R(CrpSiqM1-p-q)ZTS…(2)
In composition formula (2), atomic ratio Z is the number of satisfaction 4≤Z≤13, element M, Cr, Si other than atomic ratio Z expressions R
Ratio of the total content relative to R.Atomic ratio p is the number of satisfaction 0.005≤p≤0.2.Atomic ratio q be 0.005≤q of satisfaction≤
0.2 number.When R be 1 when, atomic ratio S be meet the number of S≤2.0, but T be not included in implement nitrogen treatment before alloy in,
That is S=0 or when being regarded as inevitable impurity, can also be blended in implementation with the state of R-T alloys by required mixing ratio
In other alloy powders of nitrogen treatment (nitro-alloy powder).
Obtained by alloy powder for example can be by being cast the melt obtained by arc melting process or high frequency fusion method
Alloy cast ingot is crushed by alloy thin band made from melt quenching method to prepare.Other preparation sides as alloy powder
Method can enumerate mechanical alloying method and mechanical milling method, gas atomization, reduction-diffusion process etc..For alloy powder or crushing
Preceding alloy, can also implement heat treatment as needed makes it homogenize.
The crushing of alloy cast ingot or alloy thin band etc. is preferably implemented to making the grain size of alloy powder reach 45 μm or less.Such as
The grain size of fruit alloy powder is at 45 μm hereinafter, nitrogen can then fully invaded to inside particles, to entire particle progress homogeneous
Nitrogen treatment.The crushing of alloy cast ingot or alloy thin band etc. is for example implemented using jet mill or ball mill.Alloy in order to prevent
The crushing of the oxidation of powder, alloy cast ingot or alloy thin band etc. preferably carries out in an inert gas atmosphere etc..
Then, nitrogen treatment is implemented to alloy powder.In nitrogen treatment, in the nitrogen atmosphere of 0.1~100 atmospheric pressure
In, heat treatment in 0.1~100 hour is carried out at a temperature of 300~900 DEG C.In order to improve the homogeneous of R- (M, Cr, Si)-N phases
Property, 2~24 are more preferably carried out under conditions of the pressure of nitrogen atmosphere is 0.5~10 atmospheric pressure, temperature is 450~750 DEG C
The nitrogen treatment of hour.The atmosphere when nitrogen treatment of alloy powder can also replace nitrogen using compound gas such as ammonia
Gas.By using the gas mixed with hydrogen by nitrogen or compound gas, nitridation reaction also can control.
It, can be by the nitrogen in ferromagnetic material by using the mixed gas of the compound gas such as ammonia or nitrogen and hydrogen
A part replaced with hydrogen.It, can be in the alloy powder before nitrogen treatment in the case that the part carbon or boron of nitrogen are replaced
In contain carbon or boron, can also realize containing for carbon or boron with carbon compound gas or boron compound gas etc..
Then, to the alloy powder (nitrification for being set in the mold in electromagnet mixing filling and implementing nitrogen treatment
Bronze end) and mixing alloy powder, press molding on one side apply magnetic field while, the press-powder that thereby manufacture crystallographic axis is orientated
Body.
Then, the sintering of powder compact is carried out.As sintering method, it is preferred to use discharge plasma sintering process.Electric discharge etc.
Gas ions sintering in, it is believed that easily choosing property of electric current to powder particle surface flow, suitably on one side inhibit be applied to
The thermic load of R- (M, Cr, Si)-N phases makes to be present in R- (M, Cr, Si)-N intercrystallines on one side or the R-T alloys of particle surface is excellent
First melt.
Sintering carries out preferably in vacuum atmosphere or in the inert gas atmospheres such as argon gas.When discharge plasma is sintered, lead to
Crossing makes sintering temperature reach 500~700 DEG C, can get fine and close permanent magnet.When less than 500 DEG C, the fusing of R-T alloys can not
It carries out, the permanent magnet with sufficient density can not be obtained.If being higher than 700 DEG C, the thermal decomposition of permanent magnet occurs, forever
Generation α-Fe are equal in long magnet, therefore the magnetic characteristic of permanent magnet significantly reduces.
Permanent magnet is can get through the above process.The magnetic characteristic of gained permanent magnet can use vibration sample type magnetic force to measure
It is fixed.The measurement of remanent magnetization can carry out as described below.It is applied on the direction parallel with the direction of magnetization being orientated before sintering
Add external magnetic field until+1600kA/m, then magnetic field is restored to zero, the value of the intensity of magnetization measured at this time is defined as permanently
The remanent magnetization of magnet.Except the measurement of permanent magnet sample, for the nickel mark similar with the specimen shape measured
Quasi- sample (sample known to the absolute value of the intensity of magnetization) is also separately similarly measured, and the absolute value of the intensity of magnetization is corrected.
In manufacturer's rule of the permanent magnet of embodiment, mixed in the R-M-N alloy powders for implementing nitrogen treatment
R-T alloy of the contract sample as alloy powder implements sintering.In sintering circuit, melted by the way that sintering condition is set as R-T alloys
The condition of change can make R-T alloys play the role of metal-to-metal adhesive, obtain the crystal boundary between R-M-N alloy powders by R-T alloys
It fills up, i.e. micro-structure of the R-T alloys as secondary phase, the density of permanent magnet can be improved.
As the prior art, there is the method using Zn as metal-to-metal adhesive, but have the disadvantage that：Higher than Zn fusing points
450 DEG C or so be heating and curing in, Zn is replaced with the M in R- (M, Cr, Si)-N phases, to incur the magnetic of permanent magnet
Change the reduction of intensity.It is made up by using the T for being not easy to replace with M atoms using the method for the R-T alloys of embodiment
The disadvantage.But such as in the case where using R-Cu system alloys of the Cu as T, even the composition that fusing point is minimum, fusing point
Of about 600 DEG C or so.In the manufacturing method of the permanent magnet of embodiment, in order to obtain low-melting alloy, in R-T alloys
Ratio of the ratio of R than the R in R- (M, Cr, Si)-N phases as main phase is high.
R-T alloys to be made included in R-M-N, in the case of being sintered under conditions of higher than fusing point, send out by R-M-N phases
Heat is decomposed, therefore can not obtain the permanent magnet for showing high magnetic characteristic.On the other hand, in the permanent magnet of embodiment
In manufacturer's rule, by using R- (M, Cr, Si)-N alloys with high thermal stability containing Cr, Si, even if higher than
In the case of implementing sintering at a temperature of R-T alloy melting points, it can also be obtained in the case where not making R- (M, Cr, Si)-N mutually thermally decompose
To permanent magnet.
As other methods containing R-T alloys in permanent magnet are made, have makes the alloy before nitrogen treatment contain T's in advance
Method.When advance alloying, the T of the amount by adding the solid solubility limit more than R- (M, Cr, Si)-N phases, remaining T are closed with R-T
The form of gold is segregated in the grain surface of gained alloy.After implementing above-mentioned nitrogen treatment as alloy powder, by with R-T
Alloy powder is mixed and then is sintered under conditions of R-T alloy meltings as described above, and the R-T alloys of particle surface are molten
Change, play the role of metal-to-metal adhesive, can get has highdensity permanent magnet.In this method, by inclined in particle surface
The R-T alloys of analysis can inhibit the oxidation of R- (M, Cr, Si)-N phases, can prevent the oxidation because of R- (M, Cr, Si)-N phases and generate oxygen
Compound phase causes the characteristic of permanent magnet to reduce.Therefore, the volume ratio of the oxide phase in permanent magnet can be down to for example
5.2% or less.
(second embodiment)
The permanent magnet of first embodiment can be used for electric rotating machine, such as motor and generator.These electric rotatings
Machine is at least made of stator (stator) and rotor (gyrator).
Fig. 3 is the configuration example of the Permanent Magnet motor for the electric rotating machine for being denoted as the permanent magnet using embodiment
Figure.Permanent Magnet motor 21 is made of stator (stator) 22, rotor (gyrator) 23.Rotor is configured in stator 22
23.Stator 22 makes rotor 23 rotate.Rotor 23 is made of iron core 24 and the permanent magnet of embodiment 25.Based on permanent magnet 25
Characteristic etc., it can be achieved that the high efficiency of Permanent Magnet motor 21 and miniaturization, cost effective etc..Permanent Magnet motor 21
It is suitable as that the vehicles such as hybrid electric vehicle and the electric vehicle of the miniaturization of the high-output power of motor and motor is required to use
Motor.
Fig. 4 is the figure of the configuration example for the variable magnetic flux motor for being denoted as electric rotating machine.Variable magnetic flux motor 31 by
Stator 32, rotor 33 are constituted.Rotor 33 is configured in stator 32.Rotor 33 is by iron core 34, fixed magnet 35, variable magnet 36
It constitutes.Fixed magnet 35 and variable magnet 36 use the permanent magnet of embodiment.It will be in fixed magnet 35 and variable magnet 36
It is at least one be used for rotor 33.
The magnetic flux density (magnetic flux) of variable magnet 36 is variable.D in Fig. 4 indicates the direction of magnetization of variable magnet 36
(by S towards the direction of N).The direction of magnetization of the variable magnet 36 is known as D axis.The direction that D axis indicates is according to variable magnet 36
And it is different.The direction orthogonal with D axis is known as Q axis.The magnetic flux density (magnetic flux) of variable magnet 36 not by with variable magnet
The influence of the Q shaft currents in magnetic field is generated in the orthogonal Q axis directions of 36 direction of magnetization (D axis directions).The magnetic flux of variable magnet 36
Density (magnetic flux) can only be changed by generating the D shaft currents in magnetic field in D axis directions.
Magnetization winding (not shown) is provided on rotor 33.By making electric current flow into the magnetization winding, be formed as its magnetic field
Directly act on the structure of variable magnet 36.Although variable magnetic flux motor 31 is small-sized device, larger turn can be exported
Square.Variable magnetic flux motor 31 is suitable as requiring the hybrid electric vehicle of the miniaturization of the high-output power of motor and motor
With for motor vehicle motor such as electric vehicle.
Fig. 5 is the figure for the configuration example for indicating generator.Generator 41 by use the permanent magnet of embodiment stator 42,
Rotor 43, turbine 44, axis 45 and brush 46 are constituted.Rotor 43 is connect via axis 45 with turbine 44.Turbine 44 is being externally supplied
Fluid under the action of rotate.It, can also be by transmitting the dynamic such as regeneration energy of vehicles such as automobile as the replacement of turbine 44
It rotates to make axis 45 rotate.Axis 45 is connect with the commutator (not shown) for the opposite side for being configured at turbine 44 relative to rotor 43.
By the output of electromotive force that the rotation of rotor 43 generates as generator 41, risen via phase separation busbar and main transformer
It is depressed into system voltage, is then powered.Brush 46 makes the electricity release of 43 bands of rotor.
Generator 41 can be common any one of generator and variable flux generator.Rotor 43 is because of turbine 44
Electrostatic and with power generation generate shaft current and charge.
Above-mentioned electric rotating machine can for example be loaded into the rolling stock (an example of vehicle) of railway traffic.Fig. 6 is to indicate
The figure of an example of the rolling stock 100 with electric rotating machine 101.As electric rotating machine 101, can be used above-mentioned Fig. 3,4 it is electronic
The generator etc. of machine, Fig. 5.In the case of loading above-mentioned electric rotating machine as electric rotating machine 101, electric rotating machine 101 for example can be with
As using from the supply that installs electric wiring electric power or from be loaded into rolling stock 100 secondary cell supply electric power come export drive
The motor (motor) of power uses, and can also be used as kinetic energy being converted to electric power, the various loads into rolling stock 100
The generator (generator) supplied electric power uses.Efficient rotation as electric rotating machine by using embodiment
Motor can be such that rolling stock travels energy savingly.
Above-mentioned electric rotating machine can also be loaded into the automobiles such as hybrid vehicle and electric vehicle (another example of vehicle).Figure
7 be the figure of an example for the automobile 200 for indicating to have electric rotating machine 201.As electric rotating machine 201, can be used above-mentioned Fig. 3,4 electricity
The generator etc. of motivation, Fig. 5.In the case of loading above-mentioned electric rotating machine as electric rotating machine 201, electric rotating machine 201 can be used
The motor of driving force as output automobile 200 or the generator that the kinetic energy of automobile 200 when driving is converted to electric power.
Embodiment
(embodiment 1)
Raw material is allocated to scale, reaches alloy powder composition, Sm shown in table 1
(Cr0.08Si0.03Fe0.89)8.3Composition.By deployed raw material in argon gas atmosphere arc-melting, alloy cast ingot is made.It will close
Golden ingot casting carries out in argon gas atmosphere at about 1000 DEG C heat treatment in about 3 days.Then, alloy cast ingot is crushed with mortar, is obtained
To alloy powder.The sieve in 25 μm of aperture of alloy powder is sieved.By alloy powder about 1 atmospheric pressure nitrogen atmosphere
In, carry out at 700 DEG C heat treatment in 4 hours, to obtain nitro-alloy powder.
Except aforesaid operations, separately raw material is allocated to scale, reaches mixing alloyed powder shown in table 1
The composition of end composition, SmCu.By deployed raw material in argon gas arc-melting, alloy cast ingot is made.Then, it will be closed with mortar
Golden ingot casting crushes, and obtains mixing alloy powder.The sieve in 25 μm of aperture of mixing alloy powder is sieved.
By nitro-alloy powder and mixing alloy powder with weight ratio 9:1 ratio mixing, carries out in magnetic field on one side
It is orientated pressurization, is filled into mold on one side, then material powder is implemented with the condition of pressure 1.0GPa, 600 DEG C of sintering temperature
Discharge plasma is sintered, and obtains permanent magnet.Pass through the nitrogen treatment of nitro-alloy powder and mixing alloy powder
The composition of mixing, permanent magnet becomes magnet composition shown in table 1.
Table 2 show the value of the density and remanent magnetization of permanent magnet obtained in embodiment 1.Remanent magnetization
Relative value when the remanent magnetization of permanent magnet obtained in following comparative examples 1 being set as 100 indicates.
According to the SEM-EDX analysis results of permanent magnet obtained in embodiment 1, the R element ratio of main phase is 12 former
The R element ratio of sub- %, secondary phase are 51 atom % (with reference to table 2).
(embodiment 2~14)
Raw material is allocated to scale, alloy powder composition and mixing alloy powder composition is made to reach shown in table 1
Value.In addition to this permanent magnet is made by method same as Example 1.Evaluation gained is permanent similarly to Example 1
The characteristic of magnet.Table 2 show the density, remanent magnetization, the R element ratio of main phase of the permanent magnet of embodiment 2~14
With the value of the R element ratio of secondary phase.
(embodiment 15)
Raw material is allocated to scale, reaches Sm (Cr shown in table 10.08Si0.03Fe0.89)8.4Cu0.21Group
At.By deployed raw material in argon gas atmosphere arc-melting, alloy cast ingot is made.
Alloy cast ingot is carried out at about 1000 DEG C in argon gas atmosphere to heat treatment in about 3 days.Then, with mortar by alloy
Ingot casting crushes, and obtains alloy powder.The sieve in 25 μm of aperture of alloy powder is sieved.By alloy powder in about 1 atmospheric pressure
Nitrogen atmosphere in, carry out at 700 DEG C heat treatment in 4 hours, to obtain nitro-alloy powder.By nitridation obtained as above
Alloy powder on one side orientation pressurization is carried out in magnetic field, be filled into mold on one side, then to material powder with pressure 1.0GPa,
The condition that 600 DEG C of sintering temperature implements discharge plasma sintering, obtains permanent magnet.Table 2 show in embodiment 15 and is made
The density of permanent magnet, the value of remanent magnetization, the R element ratio of the R element ratio of main phase and secondary phase.
(comparative example 1)
In addition to use Zn as mixing alloy powder other than, be made up permanently of method same as embodiment 1~14
Magnet.The characteristic of evaluation gained permanent magnet similarly to Example 1.Table 2 show the permanent magnet of comparative example 1 density,
The value of the R element ratio of remanent magnetization, the R element ratio of main phase and secondary phase.
In the R element ratio permanent magnet more higher than main phase (such as embodiment 1) of secondary phase, confirmation obtains and contains Zn
Permanent magnet (comparative example 1) equal extent high relative density, and obtain with than 1 higher remanent magnetization of comparative example
R- (M, Cr, the Si)-N systems permanent magnet of intensity.Moreover, by permanent magnet made from the method described in embodiment 15, with
The above-mentioned method for mixing alloy powder is compared, and the oxide Phase Proportion in permanent magnet is less.For example, embodiment 1 is forever
It is about 5.2% by the SEM-EDX oxide Phase Proportions calculated in long magnet, in contrast, the permanent magnet of embodiment 15
In, oxide Phase Proportion is about 1.5%, with the reduction of oxide phase, confirms the raising of remanent magnetization.
It illustrates several embodiments of the invention, but these embodiments are enumerated only as example, is not to use
To limit the scope of the present invention.These new embodiments can be implemented by various other modes, can not depart from invention
Technological thought in the range of carry out it is various omit, displacement, change.These embodiments and modifications thereof are included in the model of invention
It encloses in technological thought, and is also included in invention described in claim and its equivalent range.
The above embodiment can be summarized as following technical scheme.
(technical solution 1)
A kind of permanent magnet is with composition formula：RNX(CrpSiqM1-p-q)ZTSThe permanent magnet of expression,
(R is at least one element selected from rare earth element, Zr, Nb and Hf, and M is at least one element selected from Fe and Co,
T is at least one element selected from Cu, Ga, Al, In and Sn, and X is the atomic ratio of satisfaction 0.5≤X≤2.0, and p is satisfaction 0.005
The atomic ratio of≤p≤0.2, q are the atomic ratios of satisfaction 0.005≤q≤0.2, and Z is the atomic ratio of satisfaction 4≤Z≤13, and S is to meet
The atomic ratio of 0.005≤S≤2.0；)
Wherein, including
With Th2Ni17Type, Th2Zn17Type and TbCu7The main phase of at least one of type crystal structure, and
Secondary phase containing the R more than the R in the main phase.
(technical solution 2)
Permanent magnet as described in technical solution 1, wherein the 50 atom % or more of the R are Sm.
(technical solution 3)
Permanent magnet as described in technical solution 1 or 2, wherein the 50 atom % or more of the M are Fe.
(technical solution 4)
Permanent magnet as described in any one of technical solution 1~3, wherein the 20 atom % or less of the M by selected from
At least one element substitution of Ti, V, Ta, Mo, W, Mn, Ni, Zn and Ge.
(technical solution 5)
Permanent magnet as described in any one of technical solution 1~4, wherein the 50 atom % or less of the N by selected from H,
At least one element substitution of B and C.
(technical solution 6)
Permanent magnet as described in any one of technical solution 1~5, wherein the 50 atom % or more of the T are Cu.
(technical solution 7)
Permanent magnet as described in any one of technical solution 1~6, wherein the density of the permanent magnet is in 6.5g/
cm3More than.
(technical solution 8)
Permanent magnet as described in any one of technical solution 1~7, wherein the secondary phase has the R's and T
Alloy phase.
(technical solution 9)
Permanent magnet as described in any one of technical solution 1~8, wherein oxide phase in the permanent magnet
Volume ratio is below 5.2%.
(technical solution 10)
A kind of electric rotating machine, wherein there is rotor and stator, the rotor or the stator to have in technical solution 1~9
Any one of them permanent magnet.
(technical solution 11)
Electric rotating machine as described in technical solution 10 is motor or generator.
(technical solution 12)
A kind of vehicle, wherein with the electric rotating machine described in technical solution 10 or 11.
(technical solution 13)
A kind of vehicle, wherein with the electric rotating machine described in technical solution 10, rotation, which is delivered to, is set to the rotation
The axis of one end of motor.
Claims (11)
1. a kind of permanent magnet is with composition formula：RNX(CrpSiqM1-p-q)ZTSThe permanent magnet of expression,
R is at least one element selected from rare earth element, Zr, Nb and Hf, and M is at least one element selected from Fe and Co, and T is choosing
From at least one element of Cu, Ga, Al, In and Sn, X is the atomic ratio of satisfaction 0.5≤X≤2.0, p be 0.005≤p of satisfaction≤
0.2 atomic ratio, q are the atomic ratios of satisfaction 0.005≤q≤0.2, and Z is the atomic ratio of satisfaction 4≤Z≤13, and S is satisfaction 0.005
The atomic ratio of≤S≤2.0；
Wherein, including
With Th2Ni17Type, Th2Zn17Type and TbCu7The main phase of at least one of type crystal structure, and
Secondary phase containing the R more than the R in the main phase.
2. permanent magnet as described in claim 1, wherein the 50 atom % or more of the R are Sm.
3. permanent magnet as claimed in claim 1 or 2, wherein the 50 atom % or more of the M are Fe.
4. permanent magnet according to any one of claims 1 to 3, wherein the 20 atom % or less of the M by selected from Ti,
V, at least one element substitution of Ta, Mo, W, Mn, Ni, Zn and Ge.
5. permanent magnet as described in any one of claims 1 to 4, wherein the 50 atom % or less of the N are by selected from H, B
With at least one element substitution of C.
6. such as permanent magnet according to any one of claims 1 to 5, wherein the 50 atom % or more of the T are Cu.
7. such as permanent magnet according to any one of claims 1 to 6, wherein the density of the permanent magnet is in 6.5g/cm3With
On.
8. such as permanent magnet according to any one of claims 1 to 7, wherein the secondary conjunction mutually with the R and the T
Metallographic.
9. such as permanent magnet according to any one of claims 1 to 8, wherein the body of the oxide phase in the permanent magnet
Product ratio is below 5.2%.
10. a kind of electric rotating machine, wherein have rotor and stator, the rotor or the stator to have in claim 1~9
Any one of them permanent magnet.
11. a kind of vehicle, wherein have electric rotating machine according to any one of claims 10.
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| CN113517104A (en) * | 2021-07-21 | 2021-10-19 | 福建省长汀卓尔科技股份有限公司 | Main and auxiliary phase alloy samarium cobalt magnet material, material for sintering body, preparation method and application thereof |
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| DE112018000214T5 (en) * | 2017-03-10 | 2019-09-05 | Murata Manufacturing Co., Ltd. | Magnetic powder containing SM-Fe-N-based crystal particles, sintered magnet made thereof, process for producing the magnetic powder; and method for producing the sintered magnet |
| JP7234082B2 (en) * | 2019-09-17 | 2023-03-07 | 株式会社東芝 | Magnetic materials, permanent magnets, rotating electric machines, and vehicles |
| JP7385868B2 (en) * | 2020-06-29 | 2023-11-24 | 国立大学法人東北大学 | Rare earth iron nitrogen magnetic powder, compound for bonded magnets, method for producing bonded magnets and rare earth iron nitrogen magnetic powder |
Citations (2)
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| JP2015142119A (en) * | 2014-01-30 | 2015-08-03 | 住友電気工業株式会社 | Method for manufacturing rare earth magnet |
| WO2016151619A1 (en) * | 2015-03-23 | 2016-09-29 | 株式会社 東芝 | Magnet material, permanent magnet, motor, and generator |
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2017
- 2017-01-25 JP JP2017010979A patent/JP2018120942A/en active Pending
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|---|---|---|---|---|
| JP2015142119A (en) * | 2014-01-30 | 2015-08-03 | 住友電気工業株式会社 | Method for manufacturing rare earth magnet |
| WO2016151619A1 (en) * | 2015-03-23 | 2016-09-29 | 株式会社 東芝 | Magnet material, permanent magnet, motor, and generator |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN113517104A (en) * | 2021-07-21 | 2021-10-19 | 福建省长汀卓尔科技股份有限公司 | Main and auxiliary phase alloy samarium cobalt magnet material, material for sintering body, preparation method and application thereof |
| CN113517104B (en) * | 2021-07-21 | 2023-08-25 | 福建省长汀卓尔科技股份有限公司 | Main-auxiliary phase alloy samarium-cobalt magnet material, material for sintered body, preparation method and application thereof |
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