WO2005117035A1 - 磁性合金およびボンド磁石 - Google Patents
磁性合金およびボンド磁石 Download PDFInfo
- Publication number
- WO2005117035A1 WO2005117035A1 PCT/JP2005/009573 JP2005009573W WO2005117035A1 WO 2005117035 A1 WO2005117035 A1 WO 2005117035A1 JP 2005009573 W JP2005009573 W JP 2005009573W WO 2005117035 A1 WO2005117035 A1 WO 2005117035A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- magnetic alloy
- crystal phase
- atomic
- bonded magnet
- atom
- Prior art date
Links
Classifications
-
- 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
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C33/00—Making ferrous alloys
- C22C33/02—Making ferrous alloys by powder metallurgy
- C22C33/0257—Making ferrous alloys by powder metallurgy characterised by the range of the alloying elements
- C22C33/0278—Making ferrous alloys by powder metallurgy characterised by the range of the alloying elements with at least one alloying element having a minimum content above 5%
-
- 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
- C22C38/10—Ferrous alloys, e.g. steel alloys containing cobalt
-
- 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
- C22C38/12—Ferrous alloys, e.g. steel alloys containing tungsten, tantalum, molybdenum, vanadium, or niobium
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F1/00—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties
- H01F1/01—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials
- H01F1/03—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity
- H01F1/032—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity of hard-magnetic materials
- H01F1/04—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity of hard-magnetic materials metals or alloys
- H01F1/047—Alloys characterised by their composition
- H01F1/053—Alloys characterised by their composition containing rare earth metals
- H01F1/055—Alloys characterised by their composition containing rare earth metals and magnetic transition metals, e.g. SmCo5
- H01F1/057—Alloys characterised by their composition containing rare earth metals and magnetic transition metals, e.g. SmCo5 and IIIa elements, e.g. Nd2Fe14B
- H01F1/0571—Alloys characterised by their composition containing rare earth metals and magnetic transition metals, e.g. SmCo5 and IIIa elements, e.g. Nd2Fe14B in the form of particles, e.g. rapid quenched powders or ribbon flakes
- H01F1/0575—Alloys characterised by their composition containing rare earth metals and magnetic transition metals, e.g. SmCo5 and IIIa elements, e.g. Nd2Fe14B in the form of particles, e.g. rapid quenched powders or ribbon flakes pressed, sintered or bonded together
- H01F1/0578—Alloys characterised by their composition containing rare earth metals and magnetic transition metals, e.g. SmCo5 and IIIa elements, e.g. Nd2Fe14B in the form of particles, e.g. rapid quenched powders or ribbon flakes pressed, sintered or bonded together bonded together
Definitions
- the present invention relates to a bonded magnet that suppresses deterioration of temperature characteristics due to a high residual magnetic flux density and is easy to magnetize, and a magnetic alloy optimal for use in the bonded magnet.
- Powdered magnetic alloys containing a NdFeB type crystal phase as a main phase have been developed.
- the powdery magnetic alloy is manufactured by a liquid quenching method. Further, the powdered magnetic alloy is molded with a binder resin, and the bound powdered magnetic alloy group is magnetized to obtain a bonded magnet.
- bonded magnets have high magnetic properties and ease of molding, and are widely used as parts of motors for automobiles, spindle motors for various OA equipment, stepping motors, and the like.
- demand for bonded magnets having a high coercive force, a high residual magnetic flux density and good temperature characteristics has been increasing with the improvement in performance of motors.
- Japanese Patent Application Laid-Open No. 9-320824 discloses Nd, Fe, Co as a magnetic alloy suitable for a bonded magnet in which deterioration of temperature characteristics due to high residual magnetic flux density is suppressed and magnetization is easy. , Nb, V and B containing alloys have been proposed.
- Patent Document 1 JP-A-9-320824
- a bonded magnet manufactured from a magnetic alloy disclosed in Japanese Patent Application Laid-Open No. 9-320824 is easy to magnetize, but cannot be said to have a sufficiently high coercive force, and However, the irreversible demagnetization rate at 150 ° C is sufficiently small that it cannot be said to have good temperature characteristics.
- An object of the present invention is to provide a bonded magnet having a high coercive force, a high residual magnetic flux density, a large maximum magnetic energy product (BH), and a small irreversible demagnetization rate at 150 ° C.
- the present inventors have obtained the following findings. That is, it contains a composition component obtained by adding Tb to Nd, Pr, Fe, Co, Nd, V, and B, and has a Fe-type crystal phase and R Fe B
- a magnetic alloy according to the present invention includes Nd, Pr, Fe, Co, Nb, V, and a composition component obtained by adding Tb to B, and has a composition formula of R Fe Co Nb V Tb B (however, x Z yopqr
- R includes at least Nd and Pr
- the composition ratios thereof are X: 11 to 13 atomic%, y: 8 to 11 atomic%, o: 0.5 to 2 atomic%, and p: 0.5 ⁇ 2 atomic%
- q is set to 0.3-1 atomic%
- r is set to 6-10 atomic%
- z is set to 100—X—y—o—p—q—r atomic%. is there .
- the magnetic alloy of the present invention is a magnetic alloy powder obtained by pulverizing a quenched ribbon containing the composition component based on the composition formula, and comprises a nanocomposite of a Fe type crystal phase and an R Fe B type crystal phase.
- the composition includes a composition component obtained by adding Tb to Nd, Pr, Fe, Co, Nb, V, and B, and the composition formula thereof is represented by R Fe Co Nb V Tb B (where R is at least Nd and Pr)
- the yarn ⁇ ratio, X of 1 to 13 atomic 0/0, y is. 8 to: L 1 atoms 0/0, o power from 0.5 to 2 atomic 0/0, p is 0.5 to 2 atomic 0/0, q force. 3-1 atoms 0/0, by r is 6-10 atomic 0/0, z is set to 100- x-y-o- p- q- r atomic%, the bonded magnet
- a magnetic alloy capable of improving the coercive force and the maximum energy product can be obtained.
- the magnetic alloy powder obtained by pulverizing the quenched ribbon containing the composition component based on the composition formula is a nanocomposite of an exFe-type crystal phase and an RFeB-type crystal phase.
- the coercive force of the bonded magnet is increased, the residual magnetic flux density of the bonded magnet is increased mainly due to the presence of the a Fe type crystal phase, and the a Fe type crystal phase and the R Fe
- the average crystal grain size of the crystal phase is desirably in the range of 20 to 50 nm.
- the bonded magnet according to the present invention has a magnetic alloy powder bound with a heat-resistant resin as a main component,
- the magnetic alloy powder The magnetic alloy powder,
- composition formula is R Fe Co Nb V Tb B (where R includes at least Nd and Pr).
- X of composition formula is zopqr
- the magnetic alloy powder is a composite of an a Fe type crystal phase and an R Fe B type crystal phase.
- the volume fraction of the a Fe type crystal phase is 8 to 14 vol%, and the R Fe
- the volume ratio of the B-type crystal phase is 86 to 92 vol%.
- the powder desirably contains the crystal phase having an average crystal grain size of 20 to 50 nm.
- the irreversible demagnetization ratio at 150 ° C of 13% or less is imparted to the bonded magnet. I do. Moreover, coercive force 1430 ⁇ 1750KAZm, residual magnetic flux density 0. 5 to 0. 7T and maximum energy product confers a property is 56 ⁇ 72kj / m 3 in the bonded magnet. The invention's effect
- the irreversible demagnetization rate at a high temperature can be suppressed to a small value, for example, the irreversible demagnetization rate at 150 ° C. can be suppressed to 13% or less. It is possible to obtain an optimal magnetic alloy by applying the bonded magnet and the bonded magnet.
- the magnetic alloy according to the embodiment of the present invention includes Nd, Pr, Fe, Co,
- Nb, V, and B and a compositional component obtained by adding Tb, and the composition formula is represented by R Fe Co Nb V Tb B x Z y o q
- the magnetic alloy according to the embodiment of the present invention is a magnetic alloy powder obtained by pulverizing a quenched ribbon containing the above-mentioned compositional component based on the above-mentioned composition formula, and is a nanocomposite of an Fe type crystal phase and an R Fe B type crystal phase
- the average crystal grain size of the crystal phase when calculated based on the photograph of the transmission microscope shown in FIG. 6, may be in the range of 20 to 50 nm in consideration of changes in the specifications of the manufacturing method. Helped. Also, as a result of measurement using a ⁇ - ⁇ curve, the volume ratio of the a Fe-type crystal phase was 8 to 14 vol%, and the volume ratio of the R Fe B-type crystal phase was 86 to 92 vol%.
- the ex Fe-type crystal phase contained in the magnetic alloy powder which is a crushed product of the quenched ribbon, has an exothermic peak at, for example, around 399 ° C. in the DTA curve, and R Fe B Form
- the 2 14 crystal phase has an exothermic peak at around 583 ° C. in the DTA curve, for example.
- Nd, Pr, Fe, Co, Nb, V, B, and Tb are included as composition components of the magnetic alloy.
- B, and Tb are included alone according to the composition ratio.
- dymium is used as R in the composition formula, and other components such as Fe, Co, Nb, V, B, and Tb are included alone according to the composition ratio.
- This dymium contains a Didymium-Fe alloy containing an Fe component or does not contain an Fe component. Any of the Didymium alloys may be used.
- Didymium-Fe alloy containing Fe component since the alloy contains Fe component, the composition ratio of the Fe component contained alone is the composition ratio of the Fe component contained in the alloy. Set to the value obtained by subtracting.
- the didymium it is possible to use Gigi arm containing 21 to 23% by weight of 77 to 79 weight 0/0, Pr and Nd.
- didymium when used, it contains trace components as described in Examples, and these trace components have higher coercive force as compared with the case where the above-mentioned composition components are contained alone. It is considered that the irreversible demagnetization rate at a high temperature, for example, 150 ° C. can be sufficiently reduced. This will be repeated with the examples.
- X is desirably 11 to 13 atomic%, preferably 12 to 12.5 atomic%. It was found that when X was less than 11 atomic%, the coercive force was reduced. Also, it was found that when X exceeds 13 atomic%, the magnetic properties tend to decrease.
- y is 8 or more: L is desirably 1 atomic%, preferably 8 to 10 atomic%. It was found that when y was less than 8 atomic%, the irreversible demagnetization ratio increased. It was also found that when y exceeds 11 at%, the residual magnetic flux density decreases.
- o is desirably 0.5 to 2 atomic%, preferably 0.5 to 1.5 atomic%.
- the coercive force was found to decrease.
- p be 0.5 to 2 atomic%, preferably 0.5 to 1.0 atomic%. It was found that the coercive force and the maximum energy product were reduced when the p force was less than 0.5 atomic%. Also, it was found that when p exceeds 2 atomic%, the magnetic properties deteriorate.
- q is desirably 0.3 to 1 atomic%, preferably 0.3 to 0.7 atomic%.
- q was less than 0.3 atomic%, it was found that the coercive force decreased and the irreversible demagnetization rate at 150 ° C exceeded 13%. It was also found that when q exceeds 1 atomic%, the coercive force and the maximum energy product decrease.
- r is 6 or more: L0 atomic%, preferably 6 to 7 atomic%. It was found that when r was less than 6 atomic%, the coercive force decreased. It was also found that when r exceeds 10 atomic%, the residual magnetic flux density decreases.
- 2 is a composition ratio of 100--0--1: atomic%, and is desirably 68 to 69.5 at%. It has been found that if z is too small, the magnetic flux density may decrease, and if it is too large, the coercive force decreases.
- the coercive force (H) of the magnetic alloy represented by the above composition formula is 1270 to 1750 kAZm (16 to 22 kOe), and the residual magnetic flux density (Br) is 0.7 to 0.9T ( 7 to 9 kG), and the maximum energy product (BH) is 95 to 119 kJZm 3 (12 to 15 MGOe).
- the magnetic alloy is pulverized into a magnetic alloy powder having a particle diameter of about 100 m, and the magnetic alloy powder is bound with a heat-resistant resin. are doing.
- the bonded magnet according to the embodiment of the present invention contains a magnetic alloy powder bound with a heat-resistant resin as a main component,
- the magnetic alloy powder The magnetic alloy powder,
- composition formula is R Fe Co Nb V Tb B (where R includes at least Nd and Pr).
- X of composition formula is zopqr
- the magnetic alloy powder is a nanocomposite of an a Fe type crystal phase and an R Fe B type crystal phase.
- the volume ratio of the a Fe type crystal phase is 8 to 14 vol%, and the body of the R Fe B type crystal phase is
- the product ratio is 86 to 92 vol%.
- Didim may be used as R in the above composition formula. It contains the crystal phase having an average crystal grain size of 20 to 50 nm.
- the bonded magnet using the magnetic alloy represented by the above-mentioned composition formula is composed of the above-mentioned magnetic alloy powder and a heat-resistant resin.
- the amount of the magnetic alloy powder in the bonded magnet is usually 97 to 98% by weight.
- the heat-resistant resin is not particularly limited, and known resins such as epoxy resin and nylon resin can be used.
- the bonded magnet using the granular magnetic alloy having the above-described structure has a property of irreversible demagnetization at 150 ° C of 3% or less, preferably 2% or less. Also
- the magnetized magnetic alloy group consisting its coercive force 1430 ⁇ 1750KAZm, and the residual magnetic flux density is 0. 5 to 0. 7T and maximum energy product indicates the characteristics of 56 ⁇ 72kj / m 3
- the irreversible demagnetization rate at 150 ° C is 97.5 g of the magnetic alloy and 97.5 g of epoxy resin.
- 2.5 g of the fat was mixed and stirred, compression-molded at a pressure of 980 MPa, and cured at a temperature of 180 ° C. for 1 hour.
- the measured value was 3% or less, preferably 2% or less.
- the irreversible demagnetization rate is shown as the rate of decrease in magnetic flux after holding the bonded magnet at a temperature of 150 ° C for 1 hour.
- the bond magnet usually has a coercive force 010 [) of 1430 to 175 (3 ⁇ 47111 (18 to 221 ⁇ 06)) and a residual magnetic flux density (Br of 0.5 to 0.7 T (5 to 7 kG)). ) And a maximum energy product (BH) of typically 56-72 kJZm3 (7-9 MGO e).
- the bonded magnet according to the embodiment of the present invention can be widely used for a permanent magnet type motor mounted on an automobile, a spindle motor and a stepping motor of various office automation equipment, and the like.
- Vehicle-mounted permanent magnet type motors include various types of permanent magnet type motors mounted on vehicles used in high-temperature environments, and specifically include linear motors for electric curtains and motors for opening and closing sunroofs. , Motors for power windows, motors for wipers, motors for storing electric mirrors, motors for controlling electric mirrors, steering actuators, etc.
- R Fe Co Nb V Tb B is 11 to 13 atomic 0/0, y composition ratios x of. 8 to: LI atoms 0/0, o is 0. 5
- each metal element is adjusted and blended, and a magnetic alloy is manufactured by a known means such as high-frequency induction melting in a vacuum or an argon atmosphere.
- a Di—Fe alloy particularly preferably Didymiun, is more preferable.
- a known liquid quenching method is applied to the obtained magnetic alloy to produce a quenched ribbon (magnetic alloy).
- a known device for performing the liquid quenching method a known device that is not particularly limited can be used.
- the obtained quenched ribbon is heat-treated in a vacuum or under an argon atmosphere, and finely pulverized to produce a powdery magnetic alloy.
- the heat treatment temperature is usually 575 to 650 ° C
- the holding time in the heat treatment is usually 0 to 15 minutes.
- the holding time means the holding time at the heat treatment temperature
- the holding time of 0 minutes means that the temperature is started immediately after reaching the heat treatment temperature.
- the pulverization process is performed so that the average particle size is usually 100 m or less, or when the magnetic alloy is used for the production of compression-molded bonded magnets. Is performed so that the average particle size is usually 200 ⁇ m or less.
- a device for finely pulverizing a known device which is not particularly limited can be used.
- the obtained powdered magnetic alloy is mixed with a binder resin, and various bonded magnets are manufactured by a known method such as injection molding or compression molding.
- the molding apparatus is not particularly limited, and a known apparatus can be used.
- VSM vibrating sample magnetometer
- the exothermic peak temperature was measured using a differential thermal analyzer (DTA) (manufactured by Rigaku Corporation).
- DTA differential thermal analyzer
- VSM vibrating sample magnetometer
- the irreversible demagnetization rate at 150 ° C was determined as follows. First, the magnetic flux (F1) of the bonded magnet after 4.8 MAZm pulse magnetization was measured using a digital flux meter (manufactured by Toei Kogyo Co., Ltd.). Next, the magnetic flux (F2) of the bonded magnet was measured after being kept in a thermostat at a temperature of 150 ° C. for 1 hour and allowed to cool in air for 1 hour. Irreversible decrease at 150 ° C The magnetic susceptibility (%) is represented by (F1 ⁇ F2) ⁇ 100ZF1.
- Nd, Pr, Fe, Co, Nb, V, B, and Tb were included as components of the alloy.
- a method was employed in which the components Fe, Co, Nb, V, B, and Tb were included alone according to the composition ratio.
- Di-Fe alloy was used as the dymium. Di means Didymium.
- a magnetic alloy was obtained by vacuum suction.
- the Di- Fe alloy as the composition component, Nd: 66. 73 weight 0/0, Pr: 19. 06 wt%, Fe: 14. 14 wt%, Ce: 0. 06 wt%, La : 0.01% by weight, Dy: ⁇ 0.01% by weight, Mg: ⁇ 0.01% by weight, A1: ⁇ 0.01% by weight, Ca: ⁇ 0.01% by weight alloy). Therefore, in the magnetic alloy of Example 1, in addition to Nd, Pr, Fe, Co, Nb, V, B, and Tb, trace metal elements such as Ce, La, Dy, Mg, Al, and Ca were included. Will be included.
- a quenched ribbon (magnetic alloy) was prepared by the liquid quenching method.
- the conditions for producing the ribbon were a roll diameter of 300 mm, a roll peripheral speed of 17.5 mZ seconds, and an injection argon gas pressure of 38 kPa.
- the obtained quenched ribbon was heat-treated at a temperature of 600 ° C for 5 minutes and pulverized to produce a magnetic alloy powder having an average particle diameter of 100 / zm.
- the heating time up to 600 ° C was 3 minutes.
- the magnetic alloy according to Example 1 is a magnetic alloy powder obtained by pulverizing a quenched ribbon containing the above-mentioned compositional components based on the above-mentioned composition formula.
- the average crystal grain size of the crystal phase is based on the image of the transmission microscope shown in FIG. The calculated value was about 25 nm, considering the changes in the specifications of the manufacturing method. Also, when observing the electron diffraction pattern in FIG. 6 (B), it was found that the a Fe type crystal phase and the R Fe B type crystal phase
- the composite was proved to be magnetically isotropic.
- the volume fraction of the a Fe-type crystal phase is approximately l lvol% and R Fe
- the volume ratio of the B-type crystal phase was approximately 89 vol%.
- the coercive force H of the magnetic alloy according to 1 is improved to S1619.4 (KAZm), the residual magnetic flux density Br is 0.766 (T), and the maximum energy product (BH) force 1 is improved.
- a quenched ribbon to be a magnetic alloy obtained by the above-described manufacturing method was arbitrarily selected.
- One, two, and three magnetic alloy powders and bonded magnets were used.
- the magnetic properties of each sample and the irreversible demagnetization rate of the bonded magnet were measured.
- Figure 4 shows the results.
- Embodiment 1 described above is described using one sample.
- the irreversible demagnetization rate of the two bonded magnets was improved to –3.15, and the irreversible demagnetization rate of the three bonded magnets was improved to 2.50. This also indicates that the irreversible demagnetization rate (%) at 150 ° C. of the bonded magnet according to the embodiment of the present invention is improved in the range of 2% to about 3%.
- the demagnetization rate gradually decreased. In this case, it is about -2%, and it is suppressed to about 5% even at 200 ° C.
- the demagnetization rate sharply decreases from around 125 ° C, and decreases to about -4% at 150 ° C and to -7% or more at 200 ° C. I have.
- a bonded magnet having a high coercive force, a large maximum magnetic energy product (BH) ma and a small irreversible demagnetization rate at a high temperature, for example, 150 ° C. and the bonded magnet
- the most suitable magnetic alloy can be provided.
- FIG. 1 is a chart showing the characteristics of Example 1 of the present invention and Comparative Example 1 in comparison.
- FIG. 2 is a characteristic diagram showing a DTA curve.
- FIG. 3 is a table showing magnetic properties of magnetic alloys of an example and a comparative example.
- FIG. 4 is a table showing magnetic properties of bonded magnets of an example and a comparative example.
- FIG. 5 is a characteristic diagram showing irreversible demagnetization rates of the magnetic alloys of the bonded magnets of the example and the comparative example.
- FIG. 6 is a photograph of a magnetic alloy powder according to Example 1 observed with a transmission microscope.
Abstract
Description
Claims
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2006513921A JP4934787B2 (ja) | 2004-05-25 | 2005-05-25 | 磁性合金およびボンド磁石 |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2004154572 | 2004-05-25 | ||
JP2004-154572 | 2004-05-25 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2005117035A1 true WO2005117035A1 (ja) | 2005-12-08 |
Family
ID=35451112
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP2005/009573 WO2005117035A1 (ja) | 2004-05-25 | 2005-05-25 | 磁性合金およびボンド磁石 |
Country Status (2)
Country | Link |
---|---|
JP (1) | JP4934787B2 (ja) |
WO (1) | WO2005117035A1 (ja) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2015525051A (ja) * | 2012-03-13 | 2015-08-27 | ブローゼ・ファールツォイクタイレ・ゲーエムベーハー・ウント・コンパニ・コマンディットゲゼルシャフト・ヴュルツブルク | 高レベルの効率を有する電気機械 |
Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS6223959A (ja) * | 1985-07-25 | 1987-01-31 | Sumitomo Special Metals Co Ltd | 高性能永久磁石材料 |
JP2001189205A (ja) * | 1999-12-27 | 2001-07-10 | Sumitomo Special Metals Co Ltd | ポリイミド樹脂被膜を有する希土類系永久磁石の製造方法 |
JP2002015909A (ja) * | 2000-04-24 | 2002-01-18 | Seiko Epson Corp | 磁石粉末、ボンド磁石の製造方法およびボンド磁石 |
JP2002100507A (ja) * | 2000-09-26 | 2002-04-05 | Nissan Motor Co Ltd | 交換スプリング磁石およびその製造方法 |
JP2002343659A (ja) * | 2001-05-17 | 2002-11-29 | Nissan Motor Co Ltd | 希土類磁石合金およびこれを用いた異方性交換スプリング磁石 |
JP2003189517A (ja) * | 2001-12-21 | 2003-07-04 | Matsushita Electric Ind Co Ltd | 永久磁石モータ |
-
2005
- 2005-05-25 JP JP2006513921A patent/JP4934787B2/ja active Active
- 2005-05-25 WO PCT/JP2005/009573 patent/WO2005117035A1/ja active Application Filing
Patent Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS6223959A (ja) * | 1985-07-25 | 1987-01-31 | Sumitomo Special Metals Co Ltd | 高性能永久磁石材料 |
JP2001189205A (ja) * | 1999-12-27 | 2001-07-10 | Sumitomo Special Metals Co Ltd | ポリイミド樹脂被膜を有する希土類系永久磁石の製造方法 |
JP2002015909A (ja) * | 2000-04-24 | 2002-01-18 | Seiko Epson Corp | 磁石粉末、ボンド磁石の製造方法およびボンド磁石 |
JP2002100507A (ja) * | 2000-09-26 | 2002-04-05 | Nissan Motor Co Ltd | 交換スプリング磁石およびその製造方法 |
JP2002343659A (ja) * | 2001-05-17 | 2002-11-29 | Nissan Motor Co Ltd | 希土類磁石合金およびこれを用いた異方性交換スプリング磁石 |
JP2003189517A (ja) * | 2001-12-21 | 2003-07-04 | Matsushita Electric Ind Co Ltd | 永久磁石モータ |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2015525051A (ja) * | 2012-03-13 | 2015-08-27 | ブローゼ・ファールツォイクタイレ・ゲーエムベーハー・ウント・コンパニ・コマンディットゲゼルシャフト・ヴュルツブルク | 高レベルの効率を有する電気機械 |
Also Published As
Publication number | Publication date |
---|---|
JP4934787B2 (ja) | 2012-05-16 |
JPWO2005117035A1 (ja) | 2008-04-03 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
Hirosawa et al. | High‐coercivity iron‐rich rare‐earth permanent magnet material based on (Fe, Co) 3B‐Nd‐M (M= Al, Si, Cu, Ga, Ag, Au) | |
JPH0510807B2 (ja) | ||
JPH03227502A (ja) | 耐熱ボンド磁石並びにその製造方法およびpm型モータ | |
JPH0447024B2 (ja) | ||
JP2004146713A (ja) | R−t−n系磁粉の製造方法およびr−t−n系ボンド磁石の製造方法 | |
US7279053B2 (en) | Alloy thin ribbon for rare earth magnet, production method of the same, and alloy for rare earth magnet | |
JP3560387B2 (ja) | 磁性材料とその製造法 | |
JP2005093729A (ja) | 異方性磁石、その製造方法、およびこれを用いたモータ | |
JP3519443B2 (ja) | 永久磁石合金粉末とその製造方法 | |
JPH07263210A (ja) | 永久磁石並びに永久磁石合金粉末とその製造方法 | |
WO2005117035A1 (ja) | 磁性合金およびボンド磁石 | |
JP3622550B2 (ja) | 異方性交換スプリング磁石粉末およびその製造方法 | |
JP2002075715A (ja) | 異方性バルク交換スプリング磁石およびその製造方法 | |
JP3641021B2 (ja) | 高保磁力鉄基永久磁石及びボンド磁石 | |
JP2739860B2 (ja) | 磁性材料、それから成る磁石及びそれらの製造方法 | |
JP3735502B2 (ja) | 磁石材料の製造方法 | |
JPH10130796A (ja) | 微細結晶永久磁石合金及び等方性永久磁石粉末の製造方法 | |
JP3710154B2 (ja) | 鉄基永久磁石とその製造方法並びにボンド磁石用鉄基永久磁石合金粉末と鉄基ボンド磁石 | |
JPH0845719A (ja) | ボンド磁石用急冷薄帯、ボンド磁石用粉末、ボンド磁石及びそれらの製造方法 | |
JPH07176417A (ja) | 鉄基ボンド磁石とその製造方法 | |
JP2005272924A (ja) | 異方性交換スプリング磁石材料およびその製造方法 | |
JPH0669010A (ja) | R−t−m−n系ボンド磁石の製造方法 | |
JP2925840B2 (ja) | Fe−B−R系ボンド磁石 | |
JP3795056B2 (ja) | 鉄基ボンド磁石及びボンド磁石用鉄基永久磁石合金粉末 | |
JP3588692B2 (ja) | 永久磁石同期モータ用磁石 |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
AK | Designated states |
Kind code of ref document: A1 Designated state(s): AE AG AL AM AT AU AZ BA BB BG BR BW BY BZ CA CH CN CO CR CU CZ DE DK DM DZ EC EE EG ES FI GB GD GE GH GM HR HU ID IL IN IS JP KE KG KM KP KR KZ LC LK LR LS LT LU LV MA MD MG MK MN MW MX MZ NA NG NI NO NZ OM PG PH PL PT RO RU SC SD SE SG SK SL SM SY TJ TM TN TR TT TZ UA UG US UZ VC VN YU ZA ZM ZW |
|
AL | Designated countries for regional patents |
Kind code of ref document: A1 Designated state(s): GM KE LS MW MZ NA SD SL SZ TZ UG ZM ZW AM AZ BY KG KZ MD RU TJ TM AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IS IT LT LU MC NL PL PT RO SE SI SK TR BF BJ CF CG CI CM GA GN GQ GW ML MR NE SN TD TG |
|
121 | Ep: the epo has been informed by wipo that ep was designated in this application | ||
WWE | Wipo information: entry into national phase |
Ref document number: 2006513921 Country of ref document: JP |
|
NENP | Non-entry into the national phase |
Ref country code: DE |
|
WWW | Wipo information: withdrawn in national office |
Country of ref document: DE |
|
122 | Ep: pct application non-entry in european phase |