WO2012098817A1 - Fe基非晶質合金粉末、及び前記Fe基非晶質合金粉末を用いた圧粉コア、ならびにコイル封入圧粉コア - Google Patents
Fe基非晶質合金粉末、及び前記Fe基非晶質合金粉末を用いた圧粉コア、ならびにコイル封入圧粉コア Download PDFInfo
- Publication number
- WO2012098817A1 WO2012098817A1 PCT/JP2011/080364 JP2011080364W WO2012098817A1 WO 2012098817 A1 WO2012098817 A1 WO 2012098817A1 JP 2011080364 W JP2011080364 W JP 2011080364W WO 2012098817 A1 WO2012098817 A1 WO 2012098817A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- amorphous alloy
- based amorphous
- addition amount
- alloy powder
- powder
- Prior art date
Links
- 239000000843 powder Substances 0.000 title claims abstract description 176
- 229910000808 amorphous metal alloy Inorganic materials 0.000 title claims abstract description 113
- 239000000428 dust Substances 0.000 title claims abstract description 37
- 229910052751 metal Inorganic materials 0.000 claims abstract description 52
- 239000002184 metal Substances 0.000 claims abstract description 52
- 239000000203 mixture Substances 0.000 claims abstract description 19
- 229910052719 titanium Inorganic materials 0.000 claims abstract description 14
- 229910052782 aluminium Inorganic materials 0.000 claims abstract description 12
- 229910052748 manganese Inorganic materials 0.000 claims abstract description 12
- 229910052735 hafnium Inorganic materials 0.000 claims abstract description 5
- 229910052750 molybdenum Inorganic materials 0.000 claims abstract description 5
- 229910052758 niobium Inorganic materials 0.000 claims abstract description 5
- 229910052715 tantalum Inorganic materials 0.000 claims abstract description 5
- 229910052721 tungsten Inorganic materials 0.000 claims abstract description 5
- 229910052720 vanadium Inorganic materials 0.000 claims abstract description 5
- 229910052726 zirconium Inorganic materials 0.000 claims abstract description 5
- 229910052710 silicon Inorganic materials 0.000 claims description 18
- 229910052796 boron Inorganic materials 0.000 claims description 13
- 239000002344 surface layer Substances 0.000 claims description 12
- 239000011230 binding agent Substances 0.000 claims description 11
- 229910052759 nickel Inorganic materials 0.000 claims description 7
- 238000000465 moulding Methods 0.000 claims description 6
- 229910052718 tin Inorganic materials 0.000 claims description 6
- 230000007797 corrosion Effects 0.000 abstract description 21
- 238000005260 corrosion Methods 0.000 abstract description 21
- 230000001747 exhibiting effect Effects 0.000 abstract 1
- 230000009477 glass transition Effects 0.000 description 53
- 238000010438 heat treatment Methods 0.000 description 37
- 230000035699 permeability Effects 0.000 description 26
- 238000004017 vitrification Methods 0.000 description 24
- 230000007423 decrease Effects 0.000 description 21
- 238000002474 experimental method Methods 0.000 description 17
- 230000005415 magnetization Effects 0.000 description 17
- 239000010410 layer Substances 0.000 description 16
- 238000002844 melting Methods 0.000 description 15
- 230000008018 melting Effects 0.000 description 15
- 230000000052 comparative effect Effects 0.000 description 14
- 238000000034 method Methods 0.000 description 14
- 239000000654 additive Substances 0.000 description 13
- 230000000996 additive effect Effects 0.000 description 13
- 238000006243 chemical reaction Methods 0.000 description 11
- 238000002425 crystallisation Methods 0.000 description 9
- 230000008025 crystallization Effects 0.000 description 9
- 229910004298 SiO 2 Inorganic materials 0.000 description 7
- 229910045601 alloy Inorganic materials 0.000 description 7
- 239000000956 alloy Substances 0.000 description 7
- 239000007788 liquid Substances 0.000 description 7
- 229910052698 phosphorus Inorganic materials 0.000 description 7
- 238000009692 water atomization Methods 0.000 description 7
- 238000004458 analytical method Methods 0.000 description 6
- 229910052804 chromium Inorganic materials 0.000 description 6
- 230000003247 decreasing effect Effects 0.000 description 6
- 229910052760 oxygen Inorganic materials 0.000 description 6
- 238000010791 quenching Methods 0.000 description 6
- 230000000171 quenching effect Effects 0.000 description 6
- 229910052799 carbon Inorganic materials 0.000 description 5
- 230000015572 biosynthetic process Effects 0.000 description 4
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 3
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 3
- 230000008859 change Effects 0.000 description 3
- 239000004020 conductor Substances 0.000 description 3
- 229910052802 copper Inorganic materials 0.000 description 3
- 239000010949 copper Substances 0.000 description 3
- 230000004907 flux Effects 0.000 description 3
- 239000007789 gas Substances 0.000 description 3
- 230000020169 heat generation Effects 0.000 description 3
- 229910052742 iron Inorganic materials 0.000 description 3
- 239000000314 lubricant Substances 0.000 description 3
- 229910001004 magnetic alloy Inorganic materials 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 239000001301 oxygen Substances 0.000 description 3
- 229920005989 resin Polymers 0.000 description 3
- 239000011347 resin Substances 0.000 description 3
- 239000004925 Acrylic resin Substances 0.000 description 2
- 229920000178 Acrylic resin Polymers 0.000 description 2
- 229910018072 Al 2 O 3 Inorganic materials 0.000 description 2
- 239000004372 Polyvinyl alcohol Substances 0.000 description 2
- 239000000470 constituent Substances 0.000 description 2
- 239000013078 crystal Substances 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000000113 differential scanning calorimetry Methods 0.000 description 2
- 230000003287 optical effect Effects 0.000 description 2
- 229920002451 polyvinyl alcohol Polymers 0.000 description 2
- 238000005211 surface analysis Methods 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- XOOUIPVCVHRTMJ-UHFFFAOYSA-L zinc stearate Chemical compound [Zn+2].CCCCCCCCCCCCCCCCCC([O-])=O.CCCCCCCCCCCCCCCCCC([O-])=O XOOUIPVCVHRTMJ-UHFFFAOYSA-L 0.000 description 2
- 229910000859 α-Fe Inorganic materials 0.000 description 2
- 229910000640 Fe alloy Inorganic materials 0.000 description 1
- 229920000877 Melamine resin Polymers 0.000 description 1
- 229910020617 PbO—B2O3—SiO2 Inorganic materials 0.000 description 1
- 229910010413 TiO 2 Inorganic materials 0.000 description 1
- 229920001807 Urea-formaldehyde Polymers 0.000 description 1
- GEIAQOFPUVMAGM-UHFFFAOYSA-N ZrO Inorganic materials [Zr]=O GEIAQOFPUVMAGM-UHFFFAOYSA-N 0.000 description 1
- CEGOLXSVJUTHNZ-UHFFFAOYSA-K aluminium tristearate Chemical compound [Al+3].CCCCCCCCCCCCCCCCCC([O-])=O.CCCCCCCCCCCCCCCCCC([O-])=O.CCCCCCCCCCCCCCCCCC([O-])=O CEGOLXSVJUTHNZ-UHFFFAOYSA-K 0.000 description 1
- 229940063655 aluminum stearate Drugs 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 229920001971 elastomer Polymers 0.000 description 1
- 239000003822 epoxy resin Substances 0.000 description 1
- 230000005496 eutectics Effects 0.000 description 1
- 238000011156 evaluation Methods 0.000 description 1
- LNEPOXFFQSENCJ-UHFFFAOYSA-N haloperidol Chemical compound C1CC(O)(C=2C=CC(Cl)=CC=2)CCN1CCCC(=O)C1=CC=C(F)C=C1 LNEPOXFFQSENCJ-UHFFFAOYSA-N 0.000 description 1
- 239000011261 inert gas Substances 0.000 description 1
- 230000001788 irregular Effects 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 239000000075 oxide glass Substances 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 239000005011 phenolic resin Substances 0.000 description 1
- 229920000647 polyepoxide Polymers 0.000 description 1
- 235000019353 potassium silicate Nutrition 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 239000005060 rubber Substances 0.000 description 1
- 229920002050 silicone resin Polymers 0.000 description 1
- 229920002379 silicone rubber Polymers 0.000 description 1
- NTHWMYGWWRZVTN-UHFFFAOYSA-N sodium silicate Chemical compound [Na+].[Na+].[O-][Si]([O-])=O NTHWMYGWWRZVTN-UHFFFAOYSA-N 0.000 description 1
- 238000003980 solgel method Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 229910002058 ternary alloy Inorganic materials 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
Images
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F27/00—Details of transformers or inductances, in general
- H01F27/24—Magnetic cores
- H01F27/255—Magnetic cores made from particles
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F1/00—Metallic powder; Treatment of metallic powder, e.g. to facilitate working or to improve properties
- B22F1/08—Metallic powder characterised by particles having an amorphous microstructure
-
- 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
-
- 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
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C45/00—Amorphous alloys
- C22C45/02—Amorphous alloys with iron as the major constituent
-
- 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
- H01F1/12—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 soft-magnetic materials
- H01F1/14—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 soft-magnetic materials metals or alloys
- H01F1/147—Alloys characterised by their composition
- H01F1/153—Amorphous metallic alloys, e.g. glassy metals
- H01F1/15308—Amorphous metallic alloys, e.g. glassy metals based on Fe/Ni
-
- 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
- H01F1/12—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 soft-magnetic materials
- H01F1/14—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 soft-magnetic materials metals or alloys
- H01F1/20—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 soft-magnetic materials metals or alloys in the form of particles, e.g. powder
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F41/00—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties
- H01F41/02—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties for manufacturing cores, coils, or magnets
- H01F41/0206—Manufacturing of magnetic cores by mechanical means
- H01F41/0246—Manufacturing of magnetic circuits by moulding or by pressing powder
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C2200/00—Crystalline structure
- C22C2200/02—Amorphous
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F17/00—Fixed inductances of the signal type
- H01F17/04—Fixed inductances of the signal type with magnetic core
- H01F2017/048—Fixed inductances of the signal type with magnetic core with encapsulating core, e.g. made of resin and magnetic powder
Definitions
- the present invention relates to an Fe-based amorphous alloy powder applied to a dust core such as a transformer or a power choke coil and a coil-embedded dust core, for example.
- the stress strain at the time of powder formation of the Fe-based amorphous alloy powder and the stress strain at the time of compacting the core are compared with the powder core in which the Fe-based amorphous alloy powder is formed into the target shape by the binder.
- heat treatment is performed after the core molding.
- the heat treatment temperature actually applied to the core compact cannot be set to a very high temperature in consideration of the heat resistance of the coated conductor or the binder, so the glass transition temperature of the Fe-based amorphous alloy powder ( It was necessary to keep Tg) low. At the same time, it was necessary to improve corrosion resistance and to have excellent magnetic properties.
- JP 2007-231415 A Japanese Patent Laid-Open No. 2008-520832 JP 2009-174034 A JP 2005-307291 A JP 2009-54615 A JP 2009-293099 A JP 63-117406 A US Patent Application Publication No. 2007/0258842
- the present invention is to solve the above-described conventional problems, and in particular, a dust core or a coil-enclosed dust core having a low glass transition temperature (Tg) and excellent corrosion resistance and high magnetic permeability and low core loss.
- An object of the present invention is to provide an Fe-based amorphous alloy powder for use.
- the Fe-based amorphous alloy powder in the present invention is Composition formula, represented by (Fe 100-abcxyzt Ni a Sn b Cr c P x C y B z Si t) 100- ⁇ M ⁇ , 0at% ⁇ a ⁇ 10at%, 0at% ⁇ b ⁇ 3at%, 0at% ⁇ c ⁇ 6 at%, 6.8 at% ⁇ x ⁇ 10.8 at%, 2.2 at% ⁇ y ⁇ 9.8 at%, 0 at% ⁇ z ⁇ 4.2 at%, 0 at% ⁇ t ⁇ 3.9 at%
- the metal element M is selected from at least one of Ti, Al, Mn, Zr, Hf, V, Nb, Ta, Mo, and W, and the addition amount ⁇ of the metal element M is 0.04 wt% ⁇ ⁇ ⁇ 0.6 wt%.
- the additive amount z of B is 0 at% ⁇ z ⁇ 2 at%
- the additive amount t of Si is 0 at% ⁇ t ⁇ 1 at%
- the additive amount z of B and the additive amount t of Si are
- the added z + t is preferably 0 at% ⁇ z + t ⁇ 2 at%.
- the addition amount z of B is larger than the addition amount t of Si.
- Tg glass transition temperature
- the addition amount ⁇ of the metal element M is preferably 0.1 wt% ⁇ ⁇ ⁇ 0.6 wt%. Thereby, it is possible to stably obtain a high magnetic permeability ⁇ .
- the metal element M preferably contains at least Ti. Thereby, an effective thin passive layer can be stably formed on the powder surface, and excellent magnetic properties can be obtained.
- the metal element M can also be made into the form containing Ti, Al, and Mn.
- the addition amount a of Ni is preferably in the range of 0 at% ⁇ a ⁇ 6 at%.
- the Sn addition amount b is preferably in the range of 0 at% ⁇ b ⁇ 2 at%. Increasing the amount of Sn increases the O 2 concentration of the powder and causes a decrease in corrosion resistance. Therefore, in order to suppress the decrease in corrosion resistance and increase the ability to form amorphous, the additive amount b of Sn is 2 at% or less It is preferable that
- the addition amount c of Cr is preferably in the range of 0 at% ⁇ c ⁇ 2 at%.
- Tg glass transition temperature
- the addition amount x of P is preferably in the range of 8.8 at% ⁇ x ⁇ 10.8 at%.
- the aspect ratio of the powder is greater than 1 and 1.4 or less. Thereby, the magnetic permeability ⁇ of the core can be increased.
- the powder aspect ratio is preferably 1.2 or more and 1.4 or less.
- the magnetic permeability ⁇ of the core can be stably increased.
- the concentration of the metal element M is preferably higher in the powder surface layer than in the powder.
- the metal element M can aggregate on the powder surface layer to form a passive layer.
- the concentration of the metal element M in the powder surface layer is higher than the concentration of Si.
- the addition amount ⁇ of the metal element M is zero or the addition amount ⁇ is less than that of the present invention, the Si concentration is increased on the powder surface. At this time, the thickness of the passive layer tends to be thicker than that of the present invention.
- the amount of Si added is reduced to 3.9 at% or less (addition amount in Fe—Ni—Cr—PC—Si), and the highly active metal element M is alloyed with the alloy powder.
- the metal element M can be agglomerated on the powder surface to form a thin passive layer together with Si and O, and has excellent magnetic properties. It becomes possible to obtain.
- the powder core in the present invention is characterized in that the powder of the Fe-based amorphous alloy powder described above is solidified and formed with a binder.
- the stress strain can be appropriately mitigated at a heat treatment temperature lower than the heat resistance temperature of the binder, Since the magnetic permeability ⁇ of the core can be increased and the core loss can be reduced at the same time, a desired high inductance can be obtained with a small number of turns, and heat generation and copper loss of the exothermic dust core can be suppressed.
- the coil-embedded dust core in the present invention has a dust core formed by solidifying and molding the powder of the Fe-based amorphous alloy powder described above with a binder, and a coil covered with the dust core. It is characterized by being formed.
- the optimum heat treatment temperature of the core can be lowered, and the core loss can be reduced.
- an edgewise coil an edgewise coil having a large cross-sectional area of the coil conductor can be used, so that the DC resistance RDc can be reduced, and heat generation and copper loss can be suppressed.
- the Fe-based amorphous alloy powder of the present invention has high magnetic properties with excellent corrosion resistance as well as low glass transition temperature (Tg).
- the optimum heat treatment temperature of the core can be lowered, the magnetic permeability ⁇ is improved, and the core loss is reduced. Reduction can be achieved.
- FIG. 2A is a longitudinal sectional view of the coil-embedded dust core cut along the line AA shown in FIG.
- An image diagram of a cross section of the Fe-based amorphous alloy powder in the present embodiment XPS analysis result of Fe-based amorphous alloy powder of comparative example (Ti amount is 0.035 wt%), XPS analysis result of Fe-based amorphous alloy powder of Example (Ti amount is 0.25 wt%), Depth profile of AES in Fe-based amorphous alloy powder of comparative example (Ti amount is 0.035 wt%), Depth profile of AES in Fe-based amorphous alloy powder of Example (Ti content is 0.25 wt%), A graph showing the relationship between the amount of Ti added to the Fe-based amorphous alloy powder and the aspect ratio of the powder, A graph showing the relationship between the addition amount of Ti in the Fe-based amorphous alloy powder and the
- the composition formula is represented by (Fe 100-abcxyzt Ni a Sn b Cr c P x C y B z Si t) 100- ⁇ M ⁇ , 0at% ⁇ a ⁇ 10at %, 0 at% ⁇ b ⁇ 3 at%, 0 at% ⁇ c ⁇ 6 at%, 6.8 at% ⁇ x ⁇ 10.8 at%, 2.2 at% ⁇ y ⁇ 9.8 at%, 0 at% ⁇ z ⁇ 4.2 at %, 0 at% ⁇ t ⁇ 3.9 at%, and the metal element M is made of at least one selected from Ti, Al, Mn, Zr, Hf, V, Nb, Ta, Mo, W, The addition amount ⁇ of the element M is 0.04 wt% ⁇ ⁇ ⁇ 0.6 wt%.
- the Fe-based amorphous alloy powder of the present embodiment includes Fe as a main component and Ni, Sn, Cr, P, C, B, Si (however, Ni, Sn, Cr, B, Si Is a soft magnetic alloy formed by adding the metal element M.
- the Fe-based amorphous alloy powder of the present embodiment has a main phase amorphous phase and ⁇ -Fe by heat treatment during core forming in order to increase the saturation magnetic flux density and adjust the magnetostriction.
- a mixed phase structure with a crystal phase may be formed.
- the ⁇ -Fe crystal phase has a bcc structure.
- the addition amount of B and the addition amount of Si are reduced as much as possible to reduce Tg, and the corrosion resistance that deteriorates due to the decrease in the addition amount of Si is improved by the addition of a small amount of highly active metal element M. Is.
- the addition amount of Fe contained in the Fe-based amorphous alloy powder of the present embodiment is (100-ab-) in the Fe-Ni-Sn-Cr-PCB-Si in the above composition formula.
- in the range of about 65.9 at% to 77.4 at% in Fe—Ni—Sn—Cr—P—C—B—Si. is there.
- high magnetization can be obtained by the addition amount of Fe being high.
- the addition amount a of Ni contained in Fe—Ni—Sn—Cr—PCB—Si is defined within a range of 0 at% ⁇ a ⁇ 10 at%.
- the glass transition temperature (Tg) can be lowered, and the converted vitrification temperature (Tg / Tm) and Tx / Tm can be maintained at high values.
- Tm is a melting point
- Tx is a crystallization start temperature.
- Amorphous can be obtained even if the Ni addition amount a is increased to about 10 at%.
- the addition amount a of Ni exceeds 6 at%, the converted vitrification temperature (Tg / Tm) and Tx / Tm decrease, and the amorphous forming ability decreases.
- the amount a is preferably in the range of 0 at% ⁇ a ⁇ 6 at%. Furthermore, if the amount a is in the range of 4 at% ⁇ a ⁇ 6 at%, the glass transition temperature (Tg) is stably reduced and high conversion is achieved. It is possible to obtain the vitrification temperature (Tg / Tm) and Tx / Tm.
- the addition amount b of Sn contained in Fe—Ni—Sn—Cr—PCB—Si is defined within a range of 0 at% ⁇ b ⁇ 3 at%. Even when the Sn addition amount b is increased to about 3 at%, an amorphous state can be obtained. However, the addition of Sn increases the oxygen concentration in the alloy powder, and the addition of Sn tends to lower the corrosion resistance. Therefore, the amount of Sn added is minimized. Further, when the Sn added amount b is about 3 at%, Tx / Tm is greatly reduced and the amorphous forming ability is lowered. Therefore, the preferable range of the Sn added amount b is set to 0 ⁇ b ⁇ 2 at%. Alternatively, the addition amount b of Sn is more preferably in the range of 1 at% ⁇ b ⁇ 2 at%, since it is possible to secure high Tx / Tm.
- Ni and Sn it is preferable not to add both Ni and Sn to the Fe-based amorphous alloy powder, or to add only one of Ni or Sn.
- Tg low glass transition temperature
- Tg / Tm high conversion vitrification temperature
- the addition amount c of Cr contained in Fe—Ni—Sn—Cr—PCB—Si is defined within a range of 0 at% ⁇ c ⁇ 6 at%.
- Cr can promote the formation of a passive layer on the powder surface and can improve the corrosion resistance of the Fe-based amorphous alloy powder.
- the glass transition temperature (Tg) is increased by addition of Cr and the saturation magnetization Is is lowered.
- the addition amount c of Cr is effective to keep the addition amount c of Cr to the minimum necessary.
- the addition amount c of Cr within a range of 1 at% ⁇ c ⁇ 2 at%.
- the glass transition temperature (Tg) can be kept low, and high magnetization can be maintained.
- the addition amount x of P contained in Fe—Ni—Sn—Cr—PCB—Si is defined within a range of 6.8 at% ⁇ x ⁇ 10.8 at%.
- the addition amount y of C contained in Fe—Ni—Sn—Cr—P—C—B—Si is defined within the range of 2.2 at% ⁇ y ⁇ 9.8 at%. Amorphous can be obtained by defining the addition amount of P and C within the above range.
- the glass transition temperature (Tg) of the Fe-based amorphous alloy powder is lowered, and at the same time, the converted vitrification temperature (Tg / Tm) serving as an index of the amorphous forming ability is increased.
- the converted vitrification temperature (Tg / Tm) serving as an index of the amorphous forming ability is increased.
- Tg transition temperature
- Tm melting point
- the melting point (Tm) can be effectively lowered by adjusting the addition amount x of P in the range of 8.8 at% ⁇ x ⁇ 10.8 at%, and the converted vitrification temperature (Tg / Tm) can be increased.
- P is known as an element that tends to lower the magnetization in the semimetal, and the addition amount needs to be reduced to some extent in order to obtain high magnetization.
- the addition amount x of P is 10.8 at%, it is in the vicinity of the eutectic composition (Fe 79.4 P 10.8 C 9.8 ) of the Fe—PC—ternary alloy, so P exceeds 10.8 at%. Addition of this causes an increase in melting point (Tm). Therefore, it is desirable that the upper limit of the addition amount of P is 10.8 at%.
- Tm melting point
- Tg / Tm converted vitrification temperature
- the addition amount y of C within a range of 5.8 at% ⁇ y ⁇ 8.8 at%.
- the melting point (Tm) can be effectively lowered, the conversion vitrification temperature (Tg / Tm) can be increased, and the magnetization can be maintained at a high value.
- the addition amount z of B contained in Fe—Ni—Sn—Cr—PCB—Si is defined within the range of 0 at% ⁇ z ⁇ 4.2 at%. Further, the addition amount t of Si contained in Fe—Ni—Sn—Cr—PCB—Si is defined within a range of 0 at% ⁇ t ⁇ 3.9 at%.
- the addition of Si and B helps improve the amorphous forming ability, but the glass transition temperature (Tg) is likely to rise. Therefore, in this embodiment, in order to make the glass transition temperature (Tg) as low as possible, Si, The amount of addition of B and Si + B is to be minimized. Specifically, the glass transition temperature (Tg) of the Fe-based amorphous alloy powder is set to 740 K (Kelvin) or less.
- the additive amount z of B is set in a range of 0 at% ⁇ z ⁇ 2 at%
- the additive amount t of Si is set in a range of 0 at% ⁇ t ⁇ 1 at%
- the glass transition temperature (Tg) can be suppressed to 710 K or less.
- the addition amount z of B is larger than the addition amount t of Si within the above composition range.
- Tg glass transition temperature
- the amount of Si added is kept as low as possible in order to promote the lowering of Tg, but the corrosion resistance deteriorated by this is improved by adding a small amount of the metal element M.
- metal element M at least one selected from Ti, Al, Mn, Zr, Hf, V, Nb, Ta, Mo, and W is selected.
- the addition amount ⁇ of the metal element M is represented by (Fe—Ni—Sn—Cr—P—C—B—Si) 100- ⁇ M ⁇ in the composition formula, and the addition amount ⁇ is 0.04 wt% or more and 0.6 wt%. The following is preferable.
- the aspect ratio of the powder can be set larger than 1 and 1.4 or less, preferably 1.1 or more and 1.4 or less.
- the aspect ratio is indicated by the ratio (d / e) of the major axis d to the minor axis e in the powder shown in FIG.
- the aspect ratio (d / e) is obtained from a two-dimensional projection view of the powder.
- the major axis d is the longest part
- the minor axis e is the shortest part in the direction perpendicular to the major axis d.
- the aspect ratio is reduced to 0 based on the experimental results described later. It was set larger (preferably 1.1 or more) and 1.4 or less. Thereby, the magnetic permeability ⁇ at 100 MHz of the core can be set to 60 or more, for example.
- the addition amount ⁇ of the metal element M is preferably in the range of 0.1 wt% to 0.6 wt%.
- the aspect ratio of the powder can be set to 1.2 or more and 1.4 or less, whereby a magnetic permeability ⁇ of 60 or more can be stably obtained at 100 MHz.
- the metal element M preferably contains at least Ti.
- An effective thin passive layer can be stably formed on the powder surface, the aspect ratio of the powder can be appropriately adjusted within the range of more than 1 and 1.4 or less, and excellent magnetic properties can be obtained.
- the metal element M can include Ti, Al, and Mn.
- the concentration of the metal element M is higher in the powder surface layer 6 than in the powder interior 5 shown in FIG.
- the metal element M aggregates in the powder surface layer 6 and can form a passive layer together with Si and O.
- the metal element M is set in a range of 0.04 wt% or more and 0.6 wt% or less, but the addition amount of the metal element M is zero or the addition amount of the metal element M is less than 0.04 wt%. Then, it is known from experiments described later that the Si concentration is higher than that of the metal element M in the powder surface layer 6. At this time, the thickness of the passive layer is likely to be thicker than in the present embodiment. On the other hand, in this embodiment, the amount of Si added (in Fe—Ni—Sn—Cr—P—C—B—Si) is 3.9 at% or less, and the highly active metal element M is 0.04 wt% or more.
- the metal element M can be aggregated in the powder surface layer 6 more than Si.
- the metal element M forms a passive layer on the powder surface layer 6 together with Si and O, but in this embodiment, the passive layer can be formed thinner than when the metal element M is less than 0.04 wt%, It becomes possible to obtain excellent magnetic properties.
- composition of the Fe-based amorphous alloy powder in this embodiment can be measured by an ICP-MS (high frequency inductively coupled mass spectrometer) or the like.
- the Fe-based amorphous alloy having the above composition formula is weighed and dissolved, and the molten metal is dispersed and rapidly solidified by a water atomization method or the like to obtain an Fe-based amorphous alloy powder.
- a thin passive layer can be formed on the powder surface layer 6 of the Fe-based amorphous alloy powder, a part of the metal component is corroded in the powder manufacturing process, and the powder and this are compacted. Thus, it is possible to suppress the deterioration of the characteristics of the dust core.
- the Fe-based amorphous alloy powder in the present embodiment is applied to, for example, the annular dust core 1 shown in FIG. 1 and the coil-enclosed dust core 2 shown in FIG.
- a coil-encapsulated core (inductor element) 2 shown in FIGS. 2A and 2B includes a dust core 3 and a coil 4 covered with the dust core 3.
- binder examples include epoxy resins, silicone resins, silicone rubbers, phenol resins, urea resins, melamine resins, PVA (polyvinyl alcohol), acrylic resins, and other liquid or powder resins, rubbers, water glass ( Na 2 O—SiO 2 ), oxide glass powder (Na 2 O—B 2 O 3 —SiO 2 , PbO—B 2 O 3 —SiO 2 , PbO—BaO—SiO 2 , Na 2 O—B 2 O 3 —ZnO, CaO—BaO—SiO 2 , Al 2 O 3 —B 2 O 3 —SiO 2 , B 2 O 3 —SiO 2 ), glassy substances produced by the sol-gel method (SiO 2 , Al 2 O 3 , ZrO 2 and TiO 2 as main components).
- the lubricant zinc stearate, aluminum stearate, or the like can be used.
- the mixing ratio of the binder is 5% by mass or less, and the addition amount of the lubricant is about 0.1% by mass to 1% by mass.
- the glass transition temperature (Tg) of the Fe-based amorphous alloy powder can be lowered. Therefore, the optimum heat treatment temperature of the core can be lowered as compared with the conventional case.
- the “optimal heat treatment temperature” is a heat treatment temperature for the core molded body that can effectively relieve stress strain on the Fe-based amorphous alloy powder and minimize the core loss. For example, in an inert gas atmosphere such as N 2 gas or Ar gas, the rate of temperature rise is 40 ° C./min, and when the predetermined heat treatment temperature is reached, the heat treatment temperature is maintained for 1 hour, and the core loss W is minimized. The heat treatment temperature is recognized as the optimum heat treatment temperature.
- the heat treatment temperature T1 to be applied after the compacting core molding is set to a low temperature below the optimum heat treatment temperature T2 in consideration of the heat resistance of the resin and the like.
- the heat treatment temperature T1 can be adjusted to about 300 ° C. to 400 ° C.
- the optimum heat treatment temperature T2 can be made lower than before, so that (optimum heat treatment temperature T2—heat treatment temperature T1 after core molding) can be made smaller than before.
- the stress strain of the Fe-based amorphous alloy powder can be effectively reduced by the heat treatment at the heat treatment temperature T1 applied after the core forming as compared with the conventional case, and the Fe-based amorphous in the present embodiment. Since the alloy powder maintains high magnetization, it can secure desired inductance, reduce core loss (W), and obtain high power efficiency ( ⁇ ) when mounted on a power source. .
- the glass transition temperature (Tg) can be set to 740 K or less, and preferably 710 K or less.
- conversion vitrification temperature (Tg / Tm) can be set to 0.52 or more, Preferably it can set to 0.54 or more, More preferably, it can set to 0.56 or more.
- the saturation magnetization Is can be set to 1.0 T or more.
- the optimum heat treatment temperature can be set to 693.15 K (420 ° C.) or less, preferably 673.15 K (400 ° C.) or less.
- the core loss W can be set to 90 (kW / m 3 ) or less, preferably 60 (kW / m 3 ) or less.
- the coil 4 can be an edgewise coil.
- An edgewise coil refers to a coil wound vertically with the short side of a rectangular wire as the inner diameter surface.
- the stress strain can be appropriately relaxed at a heat treatment temperature lower than the heat resistant temperature of the binder, and the powder core 3 Since the magnetic permeability ⁇ can be increased and the core loss can be reduced, a desired high inductance L can be obtained with a small number of turns.
- the edgewise coil with a large cross-sectional area of the conductor in each turn can be used for the coil 4, the direct current resistance Rdc can be reduced, and heat generation and copper loss can be suppressed.
- Fe-based amorphous alloy powder made of 100- ⁇ Ti ⁇ was produced by a water atomization method. Note that the addition amount of each element in Fe—Cr—P—C—B—Si is at%.
- the molten metal temperature (temperature of the melted alloy) at the time of obtaining the powder was 1500 ° C., and the water ejection pressure was 80 MPa. The above atomizing conditions were the same in the experiments described later other than this experiment.
- FIGS. 4 shows the experimental results for the comparative Fe-based amorphous alloy powder
- FIG. 5 shows the experimental results for the Fe-based amorphous alloy powder of the example.
- FIG. 6 is a depth profile by Auger electron analysis optical method (AES) performed using the Fe-based amorphous alloy powder of the above comparative example
- FIG. 7 is the Fe-based amorphous alloy powder of the above-described example. It is a depth profile by the Auger electron analysis optical method (AES) performed using this.
- the leftmost of the horizontal axis in each figure is the analysis result on the powder surface, and the analysis result at the position where the powder enters the powder (toward the center of the powder) toward the right side.
- the Ti concentration did not change much from the powder surface to the inside of the powder and was low overall.
- the Si concentration was higher than the Ti concentration on the surface side of the powder. It was found that the Si concentration gradually decreased toward the inside of the powder, and the difference from the Ti concentration was reduced. It was found that O aggregated on the powder surface side, and the concentration inside the powder was very small. It was also found that the concentration of Fe gradually increased from the powder surface toward the inside of the powder, and the concentration was almost constant from a certain depth. It was found that the Cr concentration did not change much from the powder surface to the inside of the powder.
- the Ti concentration was high on the powder surface side and gradually decreased toward the inside of the powder.
- the Ti concentration was higher than the Si concentration, resulting in a concentration distribution result different from the comparative example of FIG.
- O agglomerates on the powder surface side, and this is the same in FIGS. 6 and 7, but in the embodiment of FIG. 7, the depth position until the maximum concentration of O is halved as compared with the comparative example of FIG. 7 is closer to the powder surface, that is, it was found that the film thickness of the passive layer can be formed thinner in the example of FIG. 7 than in the comparative example of FIG.
- the Fe concentration change in the example of FIG. 7 gradually increases from the powder surface toward the inside of the powder as compared with the comparative example of FIG. It was found that the Cr concentration in the example of FIG. 7 is not much different from that of the comparative example of FIG.
- Fe-based amorphous alloy powder made of 100- ⁇ Ti ⁇ was produced by a water atomization method. Note that the addition amount of each element in Fe—Cr—P—C—B—Si is at%. In addition, each Fe-based amorphous material having an addition amount ⁇ of Ti of 0.035 wt%, 0.049 wt%, 0.094 wt%, 0.268 wt%, 0.442 wt%, 0.595 wt%, and 0.805 wt% Alloy powder was used.
- the aspect ratio of the powder gradually increased as the additive amount ⁇ of Ti was increased.
- a ratio (d / e) between the major axis d and the minor axis e in the two-dimensional projection diagram of the powder shown in FIG.
- the film can be formed in an irregular shape having an aspect ratio larger than that of 1).
- the specific numerical values of the aspect ratio obtained in FIG. 8 are 1.08, 1.13, 1.16, 1.24, 1.27, 1.39, 1.39 in order of increasing Ti addition amount ⁇ . 47.
- each Fe-based amorphous alloy powder having a different additive amount ⁇ of Ti was mixed with resin (acrylic resin); 3% by mass, lubricant (zinc stearate); 0.3% by mass, at a press pressure of 600 MPa, an outer diameter of 20 mm, an inner diameter of 12 mm, with the toroidal 6.5mm angle of height 6.8 mm, height to form the core molding of 3.3 mm, further N 2 gas atmosphere, the temperature
- the dust core was molded at a temperature rate of 0.67 K / sec (40 ° C./min), a heat treatment temperature within a range of 300 ° C. to 400 ° C. and a holding time of 1 hour.
- the above-mentioned core manufacturing conditions were the same in the experiments described later other than this experiment.
- the magnetic permeability ⁇ was measured at a frequency of 100 KHz using an impedance analyzer. As shown in FIG. 9, a high magnetic permeability ⁇ of about 60 or more can be secured until the Ti addition amount ⁇ is about 0.6 wt%, but the magnetic permeability ⁇ is less than 60 when the Ti addition amount ⁇ is further increased. I understood it.
- the magnetic permeability ⁇ can be gradually increased until the aspect ratio of the powder is larger than 1 to about 1.3. However, when the aspect ratio exceeds about 1.3, the magnetic permeability ⁇ is gradually increased. It was found that when the aspect ratio exceeded 1.4 and the aspect ratio exceeded 1.4, the permeability ⁇ started to decrease rapidly due to the decrease in the core density and was below 60.
- the additive amount ⁇ of Ti was set to 0.04 wt% or more and 0.6 wt% or less.
- the aspect ratio of the powder was set to be larger than 1 and 1.4 or less, preferably 1.1 or more and 1.4 or less. Thereby, a magnetic permeability ⁇ of 60 or more can be obtained.
- the preferable range of the addition amount ⁇ of Ti is 0.1 wt% or more and 0.6 wt% or less.
- the aspect ratio of the preferable powder was 1.2 or more and 1.4 or less.
- the "optimum heat treatment temperature” shown in Table 1 is the core loss of the dust core when the temperature rise rate is 0.67 K / sec (40 ° C / min) and the holding time is 1 hour with respect to the dust core. It refers to an ideal heat treatment temperature at which W) can be reduced most.
- the evaluation of the core loss (W) of the dust core shown in Table 1 was performed using a SY-8217 BH analyzer manufactured by Iwadori Measurement Co., Ltd. with a frequency of 100 kHz and a maximum magnetic flux density of 25 mT. As shown in Table 1, 0.25 wt% Ti was added to each sample.
- FIG. 12 is a graph showing the relationship between the optimum heat treatment temperature and the core loss (W) of the dust core shown in Table 1. As shown in FIG. 12, in order to set the core loss (W) to 90 kW / m 3 or less, it was found that the optimum heat treatment temperature must be set to 693.15 K (420 ° C.) or less.
- FIG. 13 is a graph showing the relationship between the glass transition temperature (Tg) of the Fe-based amorphous alloy powder and the optimum heat treatment temperature of the dust core shown in Table 1. As shown in FIG. 13, it was found that the glass transition temperature (Tg) needs to be set to 740 K (466.85 ° C.) or lower in order to set the optimum heat treatment temperature to 693.15 K (420 ° C.) or lower.
- the application range of the glass transition temperature (Tg) of this example was set to 740 K (466.85 ° C.) or less.
- a glass transition temperature (Tg) of 710 K (436.85 ° C.) or less was set as a preferable application range.
- Fe-based amorphous alloy powders having the respective compositions shown in Table 2 below were produced. Each sample is formed in a ribbon shape by a liquid quenching method.
- the glass transition temperature (Tg) can be set to 740 K (466.85 ° C.) or lower.
- the glass transition temperature (Tg) can be more effectively reduced by setting the additive amount z of B within the range of 0 at% to 2 at%. It was also found that the glass transition temperature (Tg) can be more effectively reduced by setting the addition amount t of Si within the range of 0 at% to 1 at%.
- the addition amount z of B is set within a range of 0 at% to 2 at%
- the addition amount t of Si is set to 0 at% to 1 at%
- (addition amount of B z + addition amount t of Si) is It was found that the glass transition temperature (Tg) can be set to 710 K (436.85 ° C.) or lower by setting it within the range of 0 at% to 2 at%.
- sample No. which is a comparative example shown in Table 2. 16 and 17, the glass transition temperature (Tg) was higher than 740 K (466.85 ° C.).
- Fe-based amorphous alloy powders having the respective compositions shown in Table 3 below were produced. Each sample is formed in a ribbon shape by a liquid quenching method.
- FIG. 14 is a graph showing the relationship between the Ni addition amount of Fe-based amorphous alloy and glass transition temperature (Tg), and FIG. 15 is the Ni addition amount of Fe-based amorphous alloy and crystallization start temperature (Tx).
- FIG. 16 is a graph showing the relationship between the amount of Ni added to the Fe-based amorphous alloy and the converted vitrification temperature (Tg / Tm), and
- FIG. 17 is a graph showing the relationship between Ni in the Fe-based amorphous alloy. It is a graph which shows the relationship between addition amount and Tx / Tm.
- the range of the Ni addition amount a is set to 0 at. % To 10 at%, and a preferable range was set to 0 at% to 6 at%.
- the Ni addition amount a is set within the range of 4 at to 6 at%, the glass transition temperature (Tg) can be lowered, and a high converted vitrification temperature (Tg / Tm) and Tx / Tm can be obtained stably. I understood.
- FIG. 18 is a graph showing the relationship between the Sn addition amount of the Fe-based amorphous alloy and the glass transition temperature (Tg), and FIG. 19 shows the Sn addition amount of the Fe-based amorphous alloy and the crystallization start temperature (Tx).
- FIG. 20 is a graph showing the relationship between the amount of Sn added to the Fe-based amorphous alloy and the converted vitrification temperature (Tg / Tm), and
- FIG. 21 is a graph showing the relationship between the Sn-based Fe alloy and Sn. It is a graph which shows the relationship between addition amount and Tx / Tm.
- the addition amount b of Sn is in the range of 0 at% to 3 at%, and 0 at% to 2 at% is a preferable range. did.
- Tx / Tm decreases as described above, but the converted vitrification temperature (Tg / Tm) can be increased.
- the glass transition temperature (Tg) could be 740K (466.85 degreeC) or less, and the conversion vitrification temperature (Tg / Tm) could be 0.52 or more.
- FIG. 22 is a graph showing the relationship between the addition amount x of P and the melting point (Tm) of the Fe-based amorphous alloy
- FIG. 23 shows the addition amount C and melting point (Tm) of C in the Fe-based amorphous alloy. It is a graph which shows the relationship.
- a glass transition temperature (Tg) of 740 K (466.85 ° C.) or less, preferably 710 K (436.85 ° C.) or less can be obtained.
- Tg glass transition temperature
- the additive amount x of P is set within the range of 8.8 at% to 10.8 at%, the melting point (Tm) can be effectively reduced, and thus the conversion vitrification temperature (Tg / Tm) can be increased. I knew it was possible.
- Each Fe-based amorphous alloy powder was produced from each sample having the composition shown in Table 6 below. Each sample is formed in a ribbon shape by a liquid quenching method.
- FIG. 24 is a graph showing the relationship between the Cr addition amount of the Fe-based amorphous alloy and the glass transition temperature (Tg), and FIG. 25 shows the Cr addition amount of the Fe-based amorphous alloy and the crystallization temperature (Tx).
- FIG. 26 is a graph showing the relationship between the amount of Cr added to the Fe-based amorphous alloy and the saturation magnetization Is.
- the Cr addition amount c is in the range of 0 at% to 6 at% so that the glass transition temperature (Tg) is low and the saturation magnetization Is is 1.0 T or more.
- the preferable addition amount c of Cr was set in the range of 0 at% to 2 at%.
- the glass transition temperature (Tg) can be set to a low value regardless of the Cr amount by setting the addition amount c of Cr within the range of 0 at% to 2 at%.
- the corrosion resistance can be improved, a low glass transition temperature (Tg) can be stably obtained, and a higher magnetization is maintained. It turns out that it is possible.
- the metal element M As shown in Table 7, Ti, Al, and Mn were added as the metal element M.
- the amount of Al added is in a range greater than 0 wt% and less than 0.005 wt%.
- all the constituent elements other than the M element in the table are all represented by the composition formula Fe 71.4 Ni 6 Cr 2 P 10.8 C 7.8 B 2 , so these elements are omitted.
- the addition amount of the metal element M is defined as being in the range of 0.04 wt% or more and 0.6 wt% or less, but all the examples in Table 7 are within this range.
- the metal element M can be agglomerated on the powder surface to form a thin passive layer.
- Si and B it becomes possible to obtain low corrosion resistance, high magnetic permeability and low core loss by addition of the metal element M, as well as low Tg.
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Power Engineering (AREA)
- Organic Chemistry (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Dispersion Chemistry (AREA)
- Manufacturing & Machinery (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Crystallography & Structural Chemistry (AREA)
- Powder Metallurgy (AREA)
- Soft Magnetic Materials (AREA)
Abstract
Description
組成式が、(Fe100-a-b-c-x-y-z-tNiaSnbCrcPxCyBzSit)100-αMαで示され、0at%≦a≦10at%、0at%≦b≦3at%、0at%≦c≦6at%、6.8at%≦x≦10.8at%、2.2at%≦y≦9.8at%、0at%≦z≦4.2at%、0at%≦t≦3.9at%であり、金属元素Mは、Ti,Al,Mn,Zr,Hf,V,Nb,Ta,Mo,Wのうち少なくとも1種が選択されてなり、金属元素Mの添加量αは、0.04wt%≦α≦0.6wt%であることを特徴とするものである。
また本発明では、Niの添加量aは、0at%≦a≦6at%の範囲内であることが好ましい。これにより、安定して高い換算ガラス化温度(Tg/Tm)及びTx/Tmを得ることができ、非晶質形成能を高めることができる。
あるいは金属元素Mは、Ti,Al及びMnを含む構成にすることも出来る。
(Fe77.4Cr2P8.8C8.8B2Si1)100-αTiαからなるFe基非晶質合金粉末を水アトマイズ法により製造した。なお、Fe-Cr-P-C-B-Si中における各元素の添加量はat%である。粉末を得る際の溶湯温度(溶解された合金の温度)1500℃、水の噴出圧は80MPaであった。
なお、上記のアトマイズ条件は、この実験以外の後述する実験においても同じとした。
(Fe71.4Ni6Cr2P10.8C7.8B2)100-αTiαからなるFe基非晶質合金粉末を水アトマイズ法により製造した。なお、Fe-Cr-P-C-B-Si中における各元素の添加量はat%である。また、Tiの添加量αは0.035wt%、0.049wt%、0.094wt%、0.268wt%、0.442wt%、0.595wt%、0.805wt%とした各Fe基非晶質合金粉末とした。
なお、上記のコア作製条件は、この実験以外の後述する実験においても同じとした。
以下の表1に示すNo.1~No.8のFe基軟磁性合金を液体急冷法によりリボン状で製造し、更に各Fe非晶質合金の粉末を用いて圧粉コアを作製した。
表1に示すように各試料ともにTiを0.25wt%添加した。
以下の表2に示す各組成から成る各Fe基非晶質合金粉末を製造した。各試料は、液体急冷法によりリボン状で形成されたものである。
表2に示す試料No.3、4、9~No.15(いずれも実施例)では、Fe-Cr-P-C-B-Si中に占めるFeの添加量、Crの添加量及びPの添加量を固定し、Cの添加量、Bの添加量及びSiの添加量を夫々変化させた。また試料No.2(実施例)では、Fe量を、試料No.9~No.15のFe量よりもやや小さくした。試料No.16,17(比較例)では、試料No.2と組成が近いが、試料No.2に比べてSiが多く添加されている。
以下の表3に示す各組成から成る各Fe基非晶質合金粉末を製造した。各試料は、液体急冷法によりリボン状で形成されたものである。
表3に示す試料No.18~No.25(いずれも実施例)では、Fe-Cr-P-C-B-Si中に占めるCr,P,C,B,Siの添加量を固定し、Feの添加量、Niの添加量を変化させた。表3に示すように、Niの添加量aを10at%まで大きくしても、非晶質が得られることがわかった。また、いずれの試料も、ガラス遷移温度(Tg)が720K(446.85℃)以下、換算ガラス化温度(Tg/Tm)が0.54以上であった。
以下の表4に示す各組成から成る各Fe基非晶質合金粉末を製造した。各試料は、液体急冷法によりリボン状で形成されたものである。
表4に示す試料No.26~No.29では、Fe-Cr-P-C-B-Si中に占めるCr,P,C,B,Siの添加量を固定し、Feの添加量及びSnの添加量を変化させた。Snの添加量を3at%まで大きくしても非晶質が得られることがわかった。
以下の表5に示す各組成から成る各Fe基非晶質合金粉末を製造した。各試料は、液体急冷法によりリボン状で形成されたものである。
表5の試料No9,10,12,14,15,31~35(いずれも実施例)では、Fe-Cr-P-C-B-Si中に占めるFe,Crの添加量を固定し、P,C,B,Siの添加量を変化させた。
以下の表6に示す組成の各試料から各Fe基非晶質合金粉末を製造した。各試料は、液体急冷法によりリボン状で形成されたものである。
表6の各試料では、Fe-Cr-P-C-B-Si中に占めるNi,P,C,B,Siの添加量を固定し、Fe,Crの添加量を変化させた。表6に示すように、Crの添加量を増やすと、Fe基非晶質合金の酸素濃度が徐々に低下し、耐食性が向上することがわかった。
(Fe71.4Ni6Cr2P10.8C7.8B2)100-αMαからなる複数のFe基非晶質合金粉末を水アトマイズ法により製造した。
2 コイル封入圧粉コア
4 コイル(エッジワイズコイル)
5 粉末内部
6 粉末表面層
Claims (19)
- 組成式が、(Fe100-a-b-c-x-y-z-tNiaSnbCrcPxCyBzSit)100-αMαで示され、0at%≦a≦10at%、0at%≦b≦3at%、0at%≦c≦6at%、6.8at%≦x≦10.8at%、2.2at%≦y≦9.8at%、0at%≦z≦4.2at%、0at%≦t≦3.9at%であり、金属元素Mは、Ti,Al,Mn,Zr,Hf,V,Nb,Ta,Mo,Wのうち少なくとも1種が選択されてなり、金属元素Mの添加量αは、0.04wt%≦α≦0.6wt%であることを特徴とするFe基非晶質合金粉末。
- Bの添加量zは、0at%≦z≦2at%であり、Siの添加量tは、0at%≦t≦1at%であり、Bの添加量zとSiの添加量tを足したz+tは、0at%≦z+t≦2at%である請求項1記載のFe基非晶質合金粉末。
- BとSiの双方が添加されており、Bの添加量zのほうがSiの添加量tより大きい請求項1又は2に記載のFe基非晶質合金粉末。
- 金属元素Mの添加量αは、0.1wt%≦α≦0.6wt%である請求項1ないし3のいずれか1項に記載のFe基非晶質合金粉末。
- 金属元素Mは少なくともTiを含む請求項1ないし4のいずれか1項に記載のFe基非晶質合金粉末。
- 金属元素Mは、Ti、Al及びMnを含む請求項1ないし4のいずれか1項に記載のFe基非晶質合金粉末。
- NiとSnのうち、どちらか一方のみが添加される請求項1ないし6のいずれか1項に記載のFe基非晶質合金粉末。
- Niの添加量aは、0at%≦a≦6at%の範囲内である請求項1ないし7のいずれか1項に記載のFe基非晶質合金粉末。
- Snの添加量bは、0at%≦b≦2at%の範囲内である請求項1ないし8のいずれか1項に記載のFe基非晶質合金粉末。
- Crの添加量cは、0at%≦c≦2at%の範囲内である請求項1ないし9のいずれか1項に記載のFe基非晶質合金粉末。
- Pの添加量xは、8.8at%≦x≦10.8at%の範囲内である請求項1ないし10のいずれか1項に記載のFe基非晶質合金粉末。
- 0at%≦a≦6at%、0at%≦b≦2at%、0at%≦c≦2at%、8.8at%≦x≦10.8at%、2.2at%≦y≦9.8at%、0at%≦z≦2at%、0at%≦t≦1at%、0at%≦z+t≦2at%、0.1wt%≦α≦0.6wt%を満たす請求項1記載のFe基非晶質合金粉末。
- 粉末のアスペクト比が、1より大きく1.4以下である請求項1ないし12のいずれか1項に記載のFe基非晶質合金粉末。
- 粉末のアスペクト比が、1.2以上で1.4以下である請求項13記載のFe基非晶質合金粉末。
- 金属元素Mの濃度は、粉末内部より粉末表面層にて高くなっている請求項1ないし14のいずれか1項に記載のFe基非晶質合金粉末。
- 組成元素にSiを含み、前記粉末表面層での金属元素Mの濃度は、Siの濃度よりも高くなっている請求項15記載のFe基非晶質合金粉末。
- 請求項1ないし16のいずれか1項に記載のFe基非晶質合金粉末の粉末が結着材によって固化成形されてなることを特徴とする圧粉コア。
- 請求項1ないし16のいずれか1項に記載のFe基非晶質合金粉末の粉末が結着材によって固化成形されてなる圧粉コアと、前記圧粉コアに覆われるコイルとを有してなることを特徴とするコイル封入圧粉コア。
- 前記コイルは、エッジワイズコイルである請求項18記載のコイル封入圧粉コイル。
Priority Applications (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP11856342.8A EP2666881B1 (en) | 2011-01-17 | 2011-12-28 | Fe-BASED AMORPHOUS ALLOY POWDER, DUST CORE USING THE Fe-BASED AMORPHOUS ALLOY POWDER, AND COIL-EMBEDDED DUST CORE |
CN201180064764.1A CN103298966B (zh) | 2011-01-17 | 2011-12-28 | Fe基非晶质合金粉末及使用所述Fe基非晶质合金粉末的压粉磁芯、以及线圈内嵌式压粉磁芯 |
KR1020137018689A KR101503199B1 (ko) | 2011-01-17 | 2011-12-28 | Fe 기 비정질 합금 분말 및 상기 Fe 기 비정질 합금 분말을 사용한 압분 코어, 그리고 코일 봉입 압분 코어 |
JP2012553592A JP5458452B2 (ja) | 2011-01-17 | 2011-12-28 | Fe基非晶質合金粉末、及び前記Fe基非晶質合金粉末を用いた圧粉コア、ならびにコイル封入圧粉コア |
US13/942,579 US8854173B2 (en) | 2011-01-17 | 2013-07-15 | Fe-based amorphous alloy powder, dust core using the same, and coil-embedded dust core |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2011006770 | 2011-01-17 | ||
JP2011-006770 | 2011-01-17 |
Related Child Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US13/942,579 Continuation US8854173B2 (en) | 2011-01-17 | 2013-07-15 | Fe-based amorphous alloy powder, dust core using the same, and coil-embedded dust core |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2012098817A1 true WO2012098817A1 (ja) | 2012-07-26 |
Family
ID=46515454
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP2011/080364 WO2012098817A1 (ja) | 2011-01-17 | 2011-12-28 | Fe基非晶質合金粉末、及び前記Fe基非晶質合金粉末を用いた圧粉コア、ならびにコイル封入圧粉コア |
Country Status (7)
Country | Link |
---|---|
US (1) | US8854173B2 (ja) |
EP (1) | EP2666881B1 (ja) |
JP (1) | JP5458452B2 (ja) |
KR (1) | KR101503199B1 (ja) |
CN (1) | CN103298966B (ja) |
TW (1) | TWI441929B (ja) |
WO (1) | WO2012098817A1 (ja) |
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN103887031A (zh) * | 2012-12-19 | 2014-06-25 | 阿尔卑斯绿色器件株式会社 | Fe基软磁性粉末、使用了其的复合磁性粉末及使用了上述复合磁性粉末的压粉磁芯 |
JP2015167183A (ja) * | 2014-03-04 | 2015-09-24 | Necトーキン株式会社 | ナノ結晶軟磁性合金粉末およびそれを用いた圧粉磁芯 |
JP2018022916A (ja) * | 2014-01-29 | 2018-02-08 | アルプス電気株式会社 | 電子部品および電子機器 |
JP2019071433A (ja) * | 2014-08-30 | 2019-05-09 | 太陽誘電株式会社 | コイル部品 |
JP2020511601A (ja) * | 2017-02-15 | 2020-04-16 | シーアールエス ホールディングス, インコーポレイテッドCrs Holdings, Incorporated | Fe基軟磁性合金 |
US10748694B2 (en) | 2014-08-30 | 2020-08-18 | Taiyo Yuden Co., Ltd. | Coil component |
Families Citing this family (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP5505563B2 (ja) * | 2011-07-28 | 2014-05-28 | アルプス・グリーンデバイス株式会社 | Fe基非晶質合金、及びFe基非晶質合金粉末を用いた圧粉磁心 |
US8723629B1 (en) * | 2013-01-10 | 2014-05-13 | Cyntec Co., Ltd. | Magnetic device with high saturation current and low core loss |
JP6262504B2 (ja) * | 2013-11-28 | 2018-01-17 | アルプス電気株式会社 | 軟磁性粉末を用いた圧粉コアおよび該圧粉コアの製造方法 |
CN104073749B (zh) * | 2014-06-18 | 2017-03-15 | 安泰科技股份有限公司 | 一种元素分布均匀的铁基非晶软磁合金及其制备方法 |
CN109070205A (zh) * | 2016-04-06 | 2018-12-21 | 新东工业株式会社 | 铁基金属玻璃合金粉末 |
JP6926421B2 (ja) * | 2016-09-08 | 2021-08-25 | スミダコーポレーション株式会社 | 複合磁性材料、その複合磁性材料を熱硬化して得られる複合磁性成形体、その複合磁性成形体を用いて得られる電子部品、およびそれらの製造方法 |
CN107009048B (zh) * | 2017-04-24 | 2019-01-25 | 南昌航空大学 | 一种双丝电弧堆焊用铁基非晶焊接材料 |
EP3425650B1 (en) * | 2017-07-04 | 2021-09-01 | Infineon Technologies Austria AG | Module and circuit for dc-dc power conversion |
JP6338004B1 (ja) * | 2017-10-06 | 2018-06-06 | Tdk株式会社 | 軟磁性合金および磁性部品 |
US11127524B2 (en) * | 2018-12-14 | 2021-09-21 | Hong Kong Applied Science and Technology Research Institute Company Limited | Power converter |
CN113474106B (zh) * | 2019-02-22 | 2023-04-18 | 阿尔卑斯阿尔派株式会社 | 压粉磁芯及其制造方法 |
Citations (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS63117406A (ja) | 1986-11-06 | 1988-05-21 | Hitachi Metals Ltd | アモルフアス合金圧粉磁心 |
JP2004156134A (ja) * | 2002-09-11 | 2004-06-03 | Alps Electric Co Ltd | 非晶質軟磁性合金粉末及びそれを用いた圧粉コア及び電波吸収体 |
JP2005307291A (ja) | 2004-04-22 | 2005-11-04 | Alps Electric Co Ltd | 非晶質軟磁性合金粉末及びそれを用いた圧粉コアと電波吸収体 |
JP2007231415A (ja) | 2006-02-02 | 2007-09-13 | Nec Tokin Corp | 非晶質軟磁性合金、非晶質軟磁性合金部材、非晶質軟磁性合金薄帯、非晶質軟磁性合金粉末、及びそれを用いた磁芯ならびにインダクタンス部品 |
US20070258842A1 (en) | 2005-11-16 | 2007-11-08 | Zhichao Lu | Fe-based amorphous magnetic powder, magnetic powder core with excellent high frequency properties and method of making them |
JP2008520832A (ja) | 2004-11-22 | 2008-06-19 | キョンポク ナショナル ユニバーシティ インダストリー−アカデミック コーオペレイション ファウンデーション | 鉄系多元素非晶質合金組成物 |
JP2008169466A (ja) * | 2006-12-15 | 2008-07-24 | Alps Electric Co Ltd | Fe基非晶質磁性合金及び磁気シート |
JP2009054615A (ja) | 2007-08-23 | 2009-03-12 | Alps Electric Co Ltd | 圧粉コア及びその製造方法 |
JP2009174034A (ja) | 2008-01-28 | 2009-08-06 | Hitachi Metals Ltd | アモルファス軟磁性合金、アモルファス軟磁性合金薄帯、アモルファス軟磁性合金粉末およびそれを用いた磁心並びに磁性部品 |
JP2009293099A (ja) | 2008-06-06 | 2009-12-17 | Nec Tokin Corp | 高耐食非晶質合金 |
JP2009299108A (ja) * | 2008-06-11 | 2009-12-24 | Alps Electric Co Ltd | Fe基非晶質合金及びそれを用いた磁気シート |
Family Cites Families (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS62277703A (ja) * | 1986-05-26 | 1987-12-02 | Hitachi Metals Ltd | Fe−Ni系合金圧粉磁心 |
JP4828229B2 (ja) * | 2003-08-22 | 2011-11-30 | Necトーキン株式会社 | 高周波用磁心及びそれを用いたインダクタンス部品 |
US7504924B2 (en) * | 2003-10-23 | 2009-03-17 | Kabushiki Kaisha Toshiba | Inductive device and method for manufacturing same |
JP4528058B2 (ja) * | 2004-08-20 | 2010-08-18 | アルプス電気株式会社 | コイル封入圧粉磁心 |
KR101222127B1 (ko) * | 2007-02-28 | 2013-01-14 | 신닛테츠스미킨 카부시키카이샤 | 연자기 특성이 우수한 Fe계 비정질 합금 |
JP4422773B2 (ja) * | 2008-04-18 | 2010-02-24 | トヨタ自動車株式会社 | 圧粉磁心用粉末とその製造方法 |
WO2011016275A1 (ja) | 2009-08-07 | 2011-02-10 | アルプス・グリーンデバイス株式会社 | Fe基非晶質合金、及び前記Fe基非晶質合金を用いた圧粉コア、ならびにコイル封入圧粉コア |
-
2011
- 2011-12-21 TW TW100147805A patent/TWI441929B/zh active
- 2011-12-28 WO PCT/JP2011/080364 patent/WO2012098817A1/ja active Application Filing
- 2011-12-28 JP JP2012553592A patent/JP5458452B2/ja active Active
- 2011-12-28 EP EP11856342.8A patent/EP2666881B1/en active Active
- 2011-12-28 KR KR1020137018689A patent/KR101503199B1/ko active IP Right Grant
- 2011-12-28 CN CN201180064764.1A patent/CN103298966B/zh active Active
-
2013
- 2013-07-15 US US13/942,579 patent/US8854173B2/en active Active
Patent Citations (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS63117406A (ja) | 1986-11-06 | 1988-05-21 | Hitachi Metals Ltd | アモルフアス合金圧粉磁心 |
JP2004156134A (ja) * | 2002-09-11 | 2004-06-03 | Alps Electric Co Ltd | 非晶質軟磁性合金粉末及びそれを用いた圧粉コア及び電波吸収体 |
JP2005307291A (ja) | 2004-04-22 | 2005-11-04 | Alps Electric Co Ltd | 非晶質軟磁性合金粉末及びそれを用いた圧粉コアと電波吸収体 |
JP2008520832A (ja) | 2004-11-22 | 2008-06-19 | キョンポク ナショナル ユニバーシティ インダストリー−アカデミック コーオペレイション ファウンデーション | 鉄系多元素非晶質合金組成物 |
US20070258842A1 (en) | 2005-11-16 | 2007-11-08 | Zhichao Lu | Fe-based amorphous magnetic powder, magnetic powder core with excellent high frequency properties and method of making them |
JP2007231415A (ja) | 2006-02-02 | 2007-09-13 | Nec Tokin Corp | 非晶質軟磁性合金、非晶質軟磁性合金部材、非晶質軟磁性合金薄帯、非晶質軟磁性合金粉末、及びそれを用いた磁芯ならびにインダクタンス部品 |
JP2008169466A (ja) * | 2006-12-15 | 2008-07-24 | Alps Electric Co Ltd | Fe基非晶質磁性合金及び磁気シート |
JP2009054615A (ja) | 2007-08-23 | 2009-03-12 | Alps Electric Co Ltd | 圧粉コア及びその製造方法 |
JP2009174034A (ja) | 2008-01-28 | 2009-08-06 | Hitachi Metals Ltd | アモルファス軟磁性合金、アモルファス軟磁性合金薄帯、アモルファス軟磁性合金粉末およびそれを用いた磁心並びに磁性部品 |
JP2009293099A (ja) | 2008-06-06 | 2009-12-17 | Nec Tokin Corp | 高耐食非晶質合金 |
JP2009299108A (ja) * | 2008-06-11 | 2009-12-24 | Alps Electric Co Ltd | Fe基非晶質合金及びそれを用いた磁気シート |
Non-Patent Citations (1)
Title |
---|
See also references of EP2666881A4 |
Cited By (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN103887031A (zh) * | 2012-12-19 | 2014-06-25 | 阿尔卑斯绿色器件株式会社 | Fe基软磁性粉末、使用了其的复合磁性粉末及使用了上述复合磁性粉末的压粉磁芯 |
CN103887031B (zh) * | 2012-12-19 | 2016-09-07 | 阿尔卑斯绿色器件株式会社 | Fe基软磁性粉末、使用了其的复合磁性粉末及使用了上述复合磁性粉末的压粉磁芯 |
JP2018022916A (ja) * | 2014-01-29 | 2018-02-08 | アルプス電気株式会社 | 電子部品および電子機器 |
JP2018022918A (ja) * | 2014-01-29 | 2018-02-08 | アルプス電気株式会社 | 電子部品および電子機器 |
JP2018022917A (ja) * | 2014-01-29 | 2018-02-08 | アルプス電気株式会社 | インダクタンス素子および電子機器 |
JP2015167183A (ja) * | 2014-03-04 | 2015-09-24 | Necトーキン株式会社 | ナノ結晶軟磁性合金粉末およびそれを用いた圧粉磁芯 |
JP2019071433A (ja) * | 2014-08-30 | 2019-05-09 | 太陽誘電株式会社 | コイル部品 |
US10748694B2 (en) | 2014-08-30 | 2020-08-18 | Taiyo Yuden Co., Ltd. | Coil component |
JP2020511601A (ja) * | 2017-02-15 | 2020-04-16 | シーアールエス ホールディングス, インコーポレイテッドCrs Holdings, Incorporated | Fe基軟磁性合金 |
Also Published As
Publication number | Publication date |
---|---|
TW201237190A (en) | 2012-09-16 |
KR101503199B1 (ko) | 2015-03-16 |
CN103298966B (zh) | 2015-04-22 |
EP2666881A4 (en) | 2016-10-26 |
JP5458452B2 (ja) | 2014-04-02 |
KR20130109205A (ko) | 2013-10-07 |
TWI441929B (zh) | 2014-06-21 |
JPWO2012098817A1 (ja) | 2014-06-09 |
US20130300531A1 (en) | 2013-11-14 |
US8854173B2 (en) | 2014-10-07 |
CN103298966A (zh) | 2013-09-11 |
EP2666881A1 (en) | 2013-11-27 |
EP2666881B1 (en) | 2018-08-22 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
JP5458452B2 (ja) | Fe基非晶質合金粉末、及び前記Fe基非晶質合金粉末を用いた圧粉コア、ならびにコイル封入圧粉コア | |
JP5419302B2 (ja) | Fe基非晶質合金、及び前記Fe基非晶質合金を用いた圧粉コア、ならびにコイル封入圧粉コア | |
JP6309149B1 (ja) | 軟磁性粉末、圧粉磁芯、磁性部品及び圧粉磁芯の製造方法 | |
US8282745B2 (en) | Fe-based soft magnetic alloy and dust core using fe-based soft magnetic alloy | |
WO2018139563A1 (ja) | 軟磁性粉末、Fe基ナノ結晶合金粉末、磁性部品及び圧粉磁芯 | |
US9558871B2 (en) | Fe-based amorphous alloy and dust core made using Fe-based amorphous alloy powder | |
JPWO2020026949A1 (ja) | 軟磁性粉末、Fe基ナノ結晶合金粉末、磁性部品、および圧粉磁芯 | |
WO2017154561A1 (ja) | Fe基合金組成物、軟磁性材料、磁性部材、電気・電子関連部品および機器 | |
JP2021027327A (ja) | 軟磁性金属粉末及び電子部品 |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
121 | Ep: the epo has been informed by wipo that ep was designated in this application |
Ref document number: 11856342 Country of ref document: EP Kind code of ref document: A1 |
|
ENP | Entry into the national phase |
Ref document number: 2012553592 Country of ref document: JP Kind code of ref document: A |
|
ENP | Entry into the national phase |
Ref document number: 20137018689 Country of ref document: KR Kind code of ref document: A |
|
NENP | Non-entry into the national phase |
Ref country code: DE |
|
WWE | Wipo information: entry into national phase |
Ref document number: 2011856342 Country of ref document: EP |