WO2004028997A1 - フェライト材料 - Google Patents
フェライト材料 Download PDFInfo
- Publication number
- WO2004028997A1 WO2004028997A1 PCT/JP2003/009735 JP0309735W WO2004028997A1 WO 2004028997 A1 WO2004028997 A1 WO 2004028997A1 JP 0309735 W JP0309735 W JP 0309735W WO 2004028997 A1 WO2004028997 A1 WO 2004028997A1
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- WIPO (PCT)
- Prior art keywords
- less
- ferrite material
- ferrite
- flux density
- magnetic flux
- Prior art date
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- 229910000859 α-Fe Inorganic materials 0.000 title claims abstract description 169
- 239000000463 material Substances 0.000 title claims abstract description 116
- 230000004907 flux Effects 0.000 claims abstract description 107
- 230000035699 permeability Effects 0.000 claims abstract description 20
- 238000005259 measurement Methods 0.000 claims description 29
- 229910052799 carbon Inorganic materials 0.000 claims description 10
- 150000001875 compounds Chemical class 0.000 claims description 10
- 238000006243 chemical reaction Methods 0.000 claims description 9
- 239000013078 crystal Substances 0.000 claims description 9
- 229910052791 calcium Inorganic materials 0.000 abstract description 10
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 abstract 2
- 229910013573 LiO0.5 Inorganic materials 0.000 abstract 1
- 239000000203 mixture Substances 0.000 description 49
- XLOMVQKBTHCTTD-UHFFFAOYSA-N Zinc monoxide Chemical compound [Zn]=O XLOMVQKBTHCTTD-UHFFFAOYSA-N 0.000 description 37
- 238000010304 firing Methods 0.000 description 36
- 239000000843 powder Substances 0.000 description 32
- 230000000052 comparative effect Effects 0.000 description 27
- PXHVJJICTQNCMI-UHFFFAOYSA-N nickel Substances [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 20
- 239000011787 zinc oxide Substances 0.000 description 18
- 230000000694 effects Effects 0.000 description 15
- 238000002474 experimental method Methods 0.000 description 15
- 239000011575 calcium Substances 0.000 description 12
- 239000002994 raw material Substances 0.000 description 11
- 230000008859 change Effects 0.000 description 10
- 239000011572 manganese Substances 0.000 description 10
- KOAWAWHSMVKCON-UHFFFAOYSA-N 6-[difluoro-(6-pyridin-4-yl-[1,2,4]triazolo[4,3-b]pyridazin-3-yl)methyl]quinoline Chemical compound C=1C=C2N=CC=CC2=CC=1C(F)(F)C(N1N=2)=NN=C1C=CC=2C1=CC=NC=C1 KOAWAWHSMVKCON-UHFFFAOYSA-N 0.000 description 9
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 9
- 229910052760 oxygen Inorganic materials 0.000 description 9
- 239000001301 oxygen Substances 0.000 description 9
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 8
- 230000007423 decrease Effects 0.000 description 8
- 238000001354 calcination Methods 0.000 description 7
- 239000000945 filler Substances 0.000 description 7
- 238000005245 sintering Methods 0.000 description 6
- 239000000835 fiber Substances 0.000 description 5
- UQSXHKLRYXJYBZ-UHFFFAOYSA-N Iron oxide Chemical compound [Fe]=O UQSXHKLRYXJYBZ-UHFFFAOYSA-N 0.000 description 4
- 238000010438 heat treatment Methods 0.000 description 4
- AMWRITDGCCNYAT-UHFFFAOYSA-L hydroxy(oxo)manganese;manganese Chemical group [Mn].O[Mn]=O.O[Mn]=O AMWRITDGCCNYAT-UHFFFAOYSA-L 0.000 description 4
- 239000002245 particle Substances 0.000 description 4
- 239000002131 composite material Substances 0.000 description 3
- 239000008187 granular material Substances 0.000 description 3
- 238000009766 low-temperature sintering Methods 0.000 description 3
- 239000007769 metal material Substances 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 239000011812 mixed powder Substances 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 239000011701 zinc Substances 0.000 description 3
- 239000004372 Polyvinyl alcohol Substances 0.000 description 2
- 230000002159 abnormal effect Effects 0.000 description 2
- 230000006872 improvement Effects 0.000 description 2
- 229910052742 iron Inorganic materials 0.000 description 2
- 229910052744 lithium Inorganic materials 0.000 description 2
- 238000002156 mixing Methods 0.000 description 2
- 229910052759 nickel Inorganic materials 0.000 description 2
- 229920002451 polyvinyl alcohol Polymers 0.000 description 2
- 239000000047 product Substances 0.000 description 2
- 241000894007 species Species 0.000 description 2
- YIWGJFPJRAEKMK-UHFFFAOYSA-N 1-(2H-benzotriazol-5-yl)-3-methyl-8-[2-[[3-(trifluoromethoxy)phenyl]methylamino]pyrimidine-5-carbonyl]-1,3,8-triazaspiro[4.5]decane-2,4-dione Chemical compound CN1C(=O)N(c2ccc3n[nH]nc3c2)C2(CCN(CC2)C(=O)c2cnc(NCc3cccc(OC(F)(F)F)c3)nc2)C1=O YIWGJFPJRAEKMK-UHFFFAOYSA-N 0.000 description 1
- VZSRBBMJRBPUNF-UHFFFAOYSA-N 2-(2,3-dihydro-1H-inden-2-ylamino)-N-[3-oxo-3-(2,4,6,7-tetrahydrotriazolo[4,5-c]pyridin-5-yl)propyl]pyrimidine-5-carboxamide Chemical compound C1C(CC2=CC=CC=C12)NC1=NC=C(C=N1)C(=O)NCCC(N1CC2=C(CC1)NN=N2)=O VZSRBBMJRBPUNF-UHFFFAOYSA-N 0.000 description 1
- 241001471112 Artocarpus tamaran Species 0.000 description 1
- KRHYYFGTRYWZRS-UHFFFAOYSA-M Fluoride anion Chemical compound [F-] KRHYYFGTRYWZRS-UHFFFAOYSA-M 0.000 description 1
- 229910021380 Manganese Chloride Inorganic materials 0.000 description 1
- GLFNIEUTAYBVOC-UHFFFAOYSA-L Manganese chloride Chemical compound Cl[Mn]Cl GLFNIEUTAYBVOC-UHFFFAOYSA-L 0.000 description 1
- RSPISYXLHRIGJD-UHFFFAOYSA-N OOOO Chemical compound OOOO RSPISYXLHRIGJD-UHFFFAOYSA-N 0.000 description 1
- 241001654684 Pinda Species 0.000 description 1
- 229910006404 SnO 2 Inorganic materials 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 230000000996 additive effect Effects 0.000 description 1
- 239000007864 aqueous solution Substances 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 239000011230 binding agent Substances 0.000 description 1
- 239000006227 byproduct Substances 0.000 description 1
- 239000001506 calcium phosphate Substances 0.000 description 1
- 229910000389 calcium phosphate Inorganic materials 0.000 description 1
- 235000011010 calcium phosphates Nutrition 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 238000006731 degradation reaction Methods 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 230000001747 exhibiting effect Effects 0.000 description 1
- -1 for example Substances 0.000 description 1
- 238000005469 granulation Methods 0.000 description 1
- 230000003179 granulation Effects 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 229910052738 indium Inorganic materials 0.000 description 1
- 239000004615 ingredient Substances 0.000 description 1
- 230000010354 integration Effects 0.000 description 1
- FBAFATDZDUQKNH-UHFFFAOYSA-M iron chloride Chemical compound [Cl-].[Fe] FBAFATDZDUQKNH-UHFFFAOYSA-M 0.000 description 1
- FUJCRWPEOMXPAD-UHFFFAOYSA-N lithium oxide Chemical compound [Li+].[Li+].[O-2] FUJCRWPEOMXPAD-UHFFFAOYSA-N 0.000 description 1
- 229910001947 lithium oxide Inorganic materials 0.000 description 1
- 239000000395 magnesium oxide Substances 0.000 description 1
- CPLXHLVBOLITMK-UHFFFAOYSA-N magnesium oxide Inorganic materials [Mg]=O CPLXHLVBOLITMK-UHFFFAOYSA-N 0.000 description 1
- AXZKOIWUVFPNLO-UHFFFAOYSA-N magnesium;oxygen(2-) Chemical compound [O-2].[Mg+2] AXZKOIWUVFPNLO-UHFFFAOYSA-N 0.000 description 1
- 229910052748 manganese Inorganic materials 0.000 description 1
- 239000011565 manganese chloride Substances 0.000 description 1
- 235000002867 manganese chloride Nutrition 0.000 description 1
- 229940099607 manganese chloride Drugs 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 229910000480 nickel oxide Inorganic materials 0.000 description 1
- 230000001590 oxidative effect Effects 0.000 description 1
- GNRSAWUEBMWBQH-UHFFFAOYSA-N oxonickel Chemical compound [Ni]=O GNRSAWUEBMWBQH-UHFFFAOYSA-N 0.000 description 1
- 230000002250 progressing effect Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 229920006395 saturated elastomer Polymers 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 230000006641 stabilisation Effects 0.000 description 1
- 238000011105 stabilization Methods 0.000 description 1
- 229910052717 sulfur Inorganic materials 0.000 description 1
- 229910052715 tantalum Inorganic materials 0.000 description 1
- QORWJWZARLRLPR-UHFFFAOYSA-H tricalcium bis(phosphate) Chemical compound [Ca+2].[Ca+2].[Ca+2].[O-]P([O-])([O-])=O.[O-]P([O-])([O-])=O QORWJWZARLRLPR-UHFFFAOYSA-H 0.000 description 1
- 229910052720 vanadium Inorganic materials 0.000 description 1
- 230000004304 visual acuity Effects 0.000 description 1
Classifications
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- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01G—COMPOUNDS CONTAINING METALS NOT COVERED BY SUBCLASSES C01D OR C01F
- C01G49/00—Compounds of iron
- C01G49/0018—Mixed oxides or hydroxides
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- C04B35/00—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
- C04B35/01—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxide ceramics
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- C04B35/01—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxide ceramics
- C04B35/26—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxide ceramics based on ferrites
- C04B35/2608—Compositions containing one or more ferrites of the group comprising manganese, zinc, nickel, copper or cobalt and one or more ferrites of the group comprising rare earth metals, alkali metals, alkaline earth metals or lead
- C04B35/2616—Compositions containing one or more ferrites of the group comprising manganese, zinc, nickel, copper or cobalt and one or more ferrites of the group comprising rare earth metals, alkali metals, alkaline earth metals or lead containing lithium
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- C04B35/00—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
- C04B35/01—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxide ceramics
- C04B35/26—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxide ceramics based on ferrites
- C04B35/265—Compositions containing one or more ferrites of the group comprising manganese or zinc and one or more ferrites of the group comprising nickel, copper or cobalt
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F1/00—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties
- H01F1/01—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials
- H01F1/03—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity
- H01F1/12—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
- H01F1/34—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 non-metallic substances, e.g. ferrites
- H01F1/36—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 non-metallic substances, e.g. ferrites in the form of particles
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- C04B2235/3239—Vanadium oxides, vanadates or oxide forming salts thereof, e.g. magnesium vanadate
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Definitions
- the present invention relates to a filament material suitably used for electronic components such as a transformer, a reactor, and a choke coil.
- transformers and reactors used in power supply lines must be able to use large currents at high temperatures.
- Materials used for these transformers and reactors include soft magnetic metal materials and ferrite materials. Furite materials are further classified into MnZn-based ferrite and Ni-based ferrite.
- Soft magnetic metallic materials have higher saturation magnetic flux density than ferrite, so they do not cause magnetic saturation even when a larger current is applied.
- soft magnetic metal materials generally have problems such as high loss, high cost, high specific gravity, and poor protection.
- ferrite has excellent cost performance and has the advantage of low loss in the frequency band from several 10 kHz to several 100 kHz.
- the MnZn-based ferrite has a higher saturation magnetic flux density than the Ni-based ferrite. Because of this, For current transformers and choke coils (both are sometimes collectively referred to as “transformers, etc.”), MnZn-based ferrite is generally used. However, in recent years, a ferrite material exhibiting a high saturation magnetic flux density has been required even when used in a higher temperature range, specifically, near 100 ° C.
- the MnZn-based ferrite exhibits a higher saturation magnetic flux density than the Ni-based ferrite, the saturation magnetic flux density is not high in the high temperature region around 100 ° C (hereinafter sometimes simply referred to as “high temperature region”). Was enough.
- Japanese Patent Application Laid-Open No. 2000-159523 discloses that the content of iron oxide is 60 to 75 mol%, the content of zinc oxide is 0 to 20 mol% (however, 0 is not included), and the balance is manganese oxide. Is disclosed.
- the ferrite sintered body, the saturation magnetic flux density at 100 ° C is not less 45 OMT or more and the measurement conditions at 50 kHz, 1 50 mT, the minimum core loss is 15 00 kW / m 3 or less .
- Japanese Patent Publication No. 63-59241 discloses that the content of manganese oxide is 13-50mo 1%, the content of zinc oxide is 0-2mo 1% (excluding 0), nickel oxide, magnesium oxide.
- a ferrite core driven at high temperature in a magnetic field of 500 G or more having a basic composition of 0 to 26 mo 1% of at least one of lithium oxide and the balance of iron oxide 45mo 1% or more is disclosed. Have been.
- the sintered compact disclosed in Japanese Patent Application Laid-Open No. 2000-159523 obtains a high saturation magnetic flux density even in a high temperature range by increasing the amount of iron in the MnZn-based ferrite. However, the loss value of this ferrite sintered body is still at a high level.
- Japanese Patent Application Laid-Open No. 2000-159523 discloses a material having a relatively low loss at which the temperature at which the loss value shows a minimum (referred to as the bottom temperature in this specification) is around 20 ° C. Have been. However, in this material, the temperature dependence of the loss has a positive slope in the temperature range of 60 to 130 ° C, which is the temperature range where general transformer and reactor cores are used. This material therefore carries the risk of thermal runaway due to self-heating.
- the above-mentioned ferrite core disclosed in Japanese Patent Publication No. 63-59241 aims to reduce loss in a temperature range of 150 ° C. or higher.
- Japanese Patent Publication No. Sho 63-59241 only discusses the reduction of loss, but does not discuss the improvement of the saturation magnetic flux density.
- the bottom temperature of the ferrite core disclosed in JP-B-63-59241 is 150 ° C or higher. For this reason, in the temperature range (60 to 130 ° C) where general transformers are used, the initial permeability deteriorates and the loss also increases.
- the ferrite materials disclosed in Japanese Patent Application Laid-Open Nos. 6-310321 and 11-3813 also failed to combine the characteristics related to the saturation magnetic flux density and the low loss at high temperatures.
- the present invention has been made based on such a technical problem, and an object of the present invention is to provide a ferrite material having a high saturation magnetic flux density and a low loss in a high temperature range around 100 ° C. Another object of the present invention is to provide a ferrite material having a bottom temperature in a temperature range (60 to 130 ° C) in which a general transformer or the like is used. Disclosure of the invention
- the present inventor has succeeded in obtaining a ferrite material having a high saturation magnetic flux density in a high temperature range and a low loss by selecting the components constituting the ferrite material and the amounts thereof.
- the ferrite material is, F e 2 0 3: 62 ⁇ 68mo 1%, Z ⁇ : 12 ⁇ 20 mo 1%, N i O: 0. 2 ⁇ 5 mo 1%, and the main component balance substantially M Itashita With a saturation magnetic flux density of 450 mT or more at 100 ° C (measurement magnetic field: 1194 A / m) and a minimum core loss of 1200 kW / m 3 or less (measurement conditions: 100 kHz, 200 mT).
- the present inventor has found that the saturation magnetic flux density in a high temperature region is improved by including a predetermined amount of Li as a component constituting the ferrite material. That is, the present invention is, F e 2 0 3: 6 2 ⁇ 6 8mo l%, ZnO: 1 2 ⁇ 2 Omo 1%, L I_ ⁇ . . 5: 4Mo less than 1% (not inclusive of 0), to provide a ferrite material which is characterized by comprising a sintered body composed mainly of balance substantially being MnO.
- the saturation magnetic flux density at room temperature is reduced by including Li.
- the inclusion of Li within the range recommended by the present invention improves the saturation magnetic flux density at high temperatures.
- L i oxide is denoted as L i 2 ⁇ , to calculate the composition by L i terms, the L i oxide in the present invention referred to as "L i O 0. 5".
- the present invention also provides a MnZnNiLi ferrite material characterized by containing a predetermined amount of both Ni and Li as components constituting the fluoride material.
- This MnZnNiLi ferrite material has Fe 2 ⁇ 3 : 6 2 to 68 mo 1%, ⁇ : 12 to 20 mol%, NiO: 5 mo 1% or less (however, 0 nOT iNCLUDED), L i O 0 5: . 4mo less than 1% (not inclusive of 0), a sintered body mainly composed of the balance substantially MnO.
- the saturation magnetic flux density can be improved while suppressing an increase in core loss by including Ni and Li in combination.
- the ferrite material of the present invention in the ferrite material of the present invention described above, as a first subcomponent, 2 5 0 p pm or less S i in S I_ ⁇ 2 equivalent (and ⁇ not inclusive of 0) and 2 C a in C a C0 3 in terms It is desirable to include 500 ppm or less (however, not including 0).
- the content of the first sub-component is also affected by the displacement of the MnZnNi-based ferrite material, MnZnLi-based ferrite material, and MnZnNiLi-based ferrite material of the present invention. It is valid.
- Mn Zn containing Ni or / and / or Li as a main component
- the Ni-based ferrite material, MnZnLi-based ferrite material, and MnZnNiLi-based ferrite material have been described, but the content of the first subcomponent described above indicates that the main component does not contain Ni. It is also effective for the base filler material.
- the present invention is, F e 2 ⁇ 3: 62 ⁇ 68mo l%, ZnO: 12 ⁇ 23mo l%, balance substantially of a sintered body mainly composed of MnO, and, as a first subcomponent, the S i with containing 800 to 2500 p pm to 80 to 250 p pm and C a in S I_ ⁇ 2 terms in C a C0 3 terms, the saturation magnetic flux density at 100 ° C is 45 OMT or more (measurement magnetic field: 1 194A / m) and a core loss of 1200 kW / m 3 or less (measurement conditions: 100 kHz, 20 OmT).
- the A ferrite material having a high saturation magnetic flux density and a low loss can be obtained.
- S i and C a are contained as the first subcomponent
- S i and C a are converted into S i 0 2 and C a C 0 3 , respectively, where S i 0 2 / C a C 0 3 ( It is effective to set the weight ratio) to be between 0.04 and 0.25.
- MnZnNi-based ferrite material MnZnLi-based ferrite material, MnZnNiLi-based ferrite material, MnZn-based ferrite material of the present invention
- the ferrite material of the present invention Nb 2 0 5: 400 p pm or less (not inclusive of 0)
- Z r 0 2 1 000 p pm or less (not inclusive of 0)
- T a 2 0 5 1000 ppm or less ( , not including 0)
- Sn0 2 10000 p pm or less (by ⁇ not inclusive of 0) and T i O. : L OOOO p pm
- Sn0 2 10000 p pm or less (by ⁇ not inclusive of 0)
- T i O. L OOOO p pm
- One or two of the following (but not including 0) can be included.
- firing at a relatively low temperature of 1350 ° C or less, or even near 1300 ° C becomes possible.
- the fourth subcomponent within the range recommended by the present invention, even when firing at 1350 ° C or lower, a saturated magnetic flux density in a high temperature region and a low-loss fan are obtained. It becomes possible to obtain the light source material.
- the above ferrite material of the present invention has a bottom temperature of 60 to 130 at which the core loss shows the minimum value. Exists in the range of C. That is, the bottom temperature of the ferrite material of the present invention can be set in a temperature band in which a general transformer or the like is used.
- the ferrite material according to the present invention can have a characteristic that the saturation magnetic flux density at 100 ° C. is 480 mT or more (measured magnetic field: 1194 A / m). Further, the ferrite material according to the present invention can reduce the saturation magnetic flux density at 100 ° C.
- the minimum value of core loss is 1 200 kWZm 3 or less (measurement condition: 100 kHz, 200 mT), and 1 100 kWZm 3 or less (measurement condition: 48 OmT or more (measurement magnetic field: 1194 A / m)) 100 kHz, 20 OmT).
- the ferrite material of the present invention it is possible to combine the characteristic of high saturation magnetic flux density in a high temperature range and the characteristic of low loss.
- the filler material according to the present invention is provided as a sintered body having a high relative density of 93% or more and a fine crystal structure having an average crystal grain size of 5 to 30 ⁇ .
- the ferrite material according to the present invention has a saturation magnetic flux density of 50 OmT or more at 100 ° C (measurement magnetic field: 1194 A / m) and a minimum core loss of 1000 kW nom 3 or less (measurement conditions: 100 kHz) , 20 OmT), the bottom temperature, which is the temperature at which the core loss shows the minimum value, is 80 to 120 ° C, and the initial permeability at room temperature is 800 or more.
- FIG. 1 is a table showing the composition and magnetic properties of the ferrite core manufactured in the first embodiment.
- FIG. 2 is a table showing the composition and magnetic properties of the ferrite core manufactured in the second embodiment.
- FIG. 3 is a chart showing the composition and magnetic properties of the ferrite core produced in the third embodiment,
- FIG. 4 is a chart showing the composition and magnetic properties of the ferrite core produced in the fourth embodiment, and
- FIG. 6 is a chart showing the composition and magnetic properties of the ferrite core manufactured in the fifth embodiment
- FIG. 6 is a chart showing the composition and magnetic properties of the ferrite core manufactured in the sixth embodiment, and
- FIG. Fig. 8 shows the composition and magnetic properties of the ferrite core manufactured in the eighth example, and Fig.
- FIG. 9 shows the composition and magnetic properties of the ferrite core manufactured in the eighth example.
- Composition and magnetic properties of ferrite cores Table showing the sex and the like the graph FIG. 10 showing the relationship between the saturation magnetic flux density in L i O 0. 5 amount and 100 ° C, first 1 Figure composition and magnetic ferrite core prepared in the tenth embodiment Table showing characteristics, etc.
- FIG. 12 shows the composition of the ferrite core manufactured in Example 11 and the magnetic characteristics, etc.
- FIG. 13 is a chart showing the composition and magnetic properties of the ferrite core manufactured in the twelfth embodiment.
- FIG. 14 is a chart showing the composition and magnetic properties of the ferrite core manufactured in the 12th embodiment.
- FIG. 15 is a chart showing the composition and magnetic properties of the fiber core manufactured in the 13th embodiment
- FIG. 16 is a chart showing the composition and magnetic properties of the fiber core manufactured in the 14th embodiment
- FIG. 17 shows the composition and magnetic properties of the ferrite core manufactured in the fifteenth embodiment
- FIG. 18 shows the composition and magnetic properties of the ferrite core manufactured in the fifteenth embodiment. It is a chart. BEST MODE FOR CARRYING OUT THE INVENTION
- the present invention is a F e 2 ⁇ 3 62 ⁇ 68m ol%. In this range, the bottom temperature with increasing F e 2 0 3 amount is high temperature side Heshifuto.
- the amount of the desired F e 2 0 3 is 63 ⁇ 67mo 1%, the amount of further preferably F e 2 ⁇ 3 is 1% 63 ⁇ 66mo.
- Z ⁇ also affects the saturation flux density and core loss. If ZnO is less than 12%, the saturation magnetic flux density decreases and the loss increases. Also, even if ZnO exceeds 20 mo 1%, the saturation magnetic flux density decreases and the loss increases. Therefore, in the present invention, Z ⁇ is set to 12 to 2 Omo 1%. In this range, the bottom temperature shifts to a higher temperature with an increase in the amount of ZnO. Desirable amount of ZnO is 13 to 19mo1%, and more preferable amount of ZnO is 14 to 18mo1%. N i ⁇ is effective in improving the saturation magnetic flux density with an increase in the Curie temperature.
- the ferrite material of the present invention contains 1 ⁇ 10 at 0.2 mol% or more. However, if the NiO content exceeds 5 mol%, the loss increases. Therefore, in the present invention, the amount of NiO is set to 0.2 to 5 mol%. Desirable amount of NiO is 0.5 to 4 mol%, more preferable amount of NiO is 2 to 4 mol%.
- the ferrite material of the present invention contains M ⁇ as a main component and a substantial balance other than the above.
- the reason for limiting the composition when the ferrite of the present invention is of the MnZnNi type has been described above.
- the addition of the first to fourth subcomponents described in detail below is not limited to MnZnNi-based ferrite, but includes MnZnNi-based ferrite, MnZnNiLi-based ferrite, and Ni as a main component. It is also effective in the case of no MnZn ferrite.
- F e 2 ⁇ 3 amounts to 62 ⁇ 68mo 1%
- Z n O amounts.
- Mn Z n system desired amount of F e 2 ⁇ 3 in the case of a ferrite as a main component is 6 2 ⁇ 67mo 1%, the desired ZnO amount 13 ⁇ 22mo 1%, the F e 2 0 3 have more desirable
- the amount is about 63-67mo 1%, and more preferably, the amount of Z ⁇ is 15-2 lmo 1%.
- the amount of F e 2 ⁇ 3 62 ⁇ 68mo l%, 1 2 ⁇ 23 mo 1% the amount of Z n O, L I_ ⁇ 0 The amount of 5 is less than 4mo 1% (less than 0), and the substantial balance is MnO. L i O. . 5 is effective in improving the saturation magnetic flux density at 100 ° C. However, if the content exceeds 4%, the loss increases and the temperature increases to 100 ° C. Magnetic flux density decreases to a level equal to or lower than that before addition. desirable
- the amount of L i O 0. 5 is 0. 2 ⁇ 3. 5 mo 1%, further preferably L i O 0. The amount of 5 0. 5 ⁇ 3mo 1%.
- the Mn Z nN i L i system 62 ⁇ 68mo 1% the amount of F e 2 ⁇ 3, 12 ⁇ 23mo 1% the amount of Z ⁇ , the amount of N i O 5MO 1% or less (not inclusive of 0), L i O 0. less than the amount of 5 4Mo 1% (however, not including 0), and the substantial balance and MnO. N i O and L i 0. .
- Si and Ca segregate at grain boundaries to form a high-resistance layer and contribute to low loss.
- Si and Ca have the effect of improving the sintering density as a sintering aid.
- S i is greater than 250 p pm in S I_ ⁇ 2 conversion calculation, or the C a is obtain ultra the 2500 p pm at C a C_ ⁇ 3 basis, occurs discontinuous abnormal grain growth, a large deterioration of the loss.
- the S i below 250 ppm in the S i O 2 terms, the C a and C a C_ ⁇ equivalent to 3 2500 ppm or less.
- S i is 80 p less than pm in S i 0 2 terms, or C a is C a C0 3 because in terms of less than 800 p pm which can not be obtained sufficiently above effect, S i is S i 0 2 It is desirable to contain 80 ppm or more in terms of conversion and 800 ppm or more of Ca in terms of CaCO 3 .
- the content of the desired S i and C a is S i is 80 to 200 p pm in S i 0 2 conversion, C a 1000 to a C A_ ⁇ _ ⁇ 3 terms: 1800 p pm, more preferably S i and C a the content of S i is 80 in S i 0 2 conversion: 150 p pm, C a is 1 200 at C A_ ⁇ _ ⁇ 3 terms: 1 Ru 700 ppm der.
- the content of S i 0 2 and C a C_ ⁇ 3 0.
- the weight ratio between the content is from 04 to 0.25, and more preferably set to be in the range of 0.05 to 0.2 Is effective.
- Nb 2 0 5 400 p pm or less (not inclusive of 0)
- Z R_ ⁇ 2 1000 p pm or less (not inclusive of 0)
- T a 2 O s 1000 p pm or less (not inclusive of 0)
- I n 2 O s 1000 ppm or less (not inclusive of 0)
- G a 2 0 5 1000 p pm or less (not inclusive of 0) Or one or more of these.
- S N_ ⁇ 2: 10000 (and ⁇ , 0-containing first) p pm or less and T i 0 2: 10000 p pm or less (including not a 0) is also one of the two Species can be included.
- S n ⁇ 2 and T i 0 2 are present in crystal grains and at crystal grain boundaries, and have an effect of reducing loss.
- S n0 2 and T i 0 2 when the containing chromatic weight exceeds 10000 p pm, lowering the degradation or saturation magnetic flux density loss caused by discontinuous abnormal grain growth.
- 10000 p pm Sn0 2 upper limit and T i 0 2 of an upper limit in order to respectively 10000 p pm Sn0 2 upper limit and T i 0 2 of an upper limit.
- the third subcomponent in order to fully enjoy the effect of reducing the loss described above, it is desirable to include the third subcomponent at 500 ppm or more. More preferably the content of the third subcomponent, SnO 2: 100 0 ⁇ 8000 p pm , T i O 2: is 1,000 to 8,000 p pm. The content of the third subcomponent have more desirable is Sn_ ⁇ 2: 1000 ⁇ 7000 p pm, T i 0 2: a 1 000 ⁇ 7000 p pm. When the third subcomponent is added in combination, the total amount of addition is desirably 10,000 ppm or less.
- a compound of P in terms of P 35 ppm or less (however, excluding 0), Mo03: 3 ⁇ ⁇ ⁇ ⁇ pm or less (however, 0 is not included) , V 2 O s: 1 0 0 0 p pm or less (not inclusive of 0), G e 0 2: ⁇ ⁇ ⁇ ⁇ ⁇ pm or less (by ⁇ , not including 0), B i 2 0 3 : B ⁇ ⁇ ⁇ ⁇ ⁇ m or less (excluding ⁇ , 0), Sb 2 3 3 : 3 0 0 0 ppm or less (excluding ⁇ , 0) .
- the fourth subcomponent has the effect of improving the sintering density as a sintering aid and also contributes to low-temperature sintering. Specifically, by including the fourth subcomponent within the range recommended by the present invention, when firing is performed at a relatively low temperature of 140 ° C. or less, or even about 130 ° C. also, 95% or more of the relative density, 4 5 OMT or more saturation magnetic flux density (measured magnetic field: 1 1 94 a / m), and the minimum value of core loss 1 0 0 0 kW Zm 3 below (measurement conditions: 1 0 0 kHz, 20 OmT).
- V 2 0 5 , G e 0 2, B i 2 0 3, S b 2 0 3 is 5 0 p pm or more.
- a desirable content of the P compound in terms of P is 5 ppm or more. More preferably containing Yuryou is, Mo 0 3, 7 0 0 p pm or less for V 2 0 5, G E_ ⁇ 2, B i 2 0 3 in For 5 0 0 p pm or less, the compound of P in P conversion 2 5 ppm or less for about S b 2 0 3 is not more than 2 5 0 0 p pm.
- M o 0 3 1 0 0 ⁇ 6 0 0 p pm
- V 2 O s 1 0 0 ⁇ 6 0 0 p pm
- G e 0 2 1 0 0 ⁇ 4 0 0 p pm
- B i 2 0 3 1 0 0 ⁇ 4 0 0 p pm
- S b 2 O 3 is 2 0 0 ⁇ 2 0 0 0 ppm .
- the fourth subcomponent is added in combination, it is desirable that the total amount of addition be 250 ppm or less.
- the ferrite material of the present invention has a saturation magnetic flux density of more than 45 OmT at 100 ° C (measured magnetic field: 1194 A / m) and a minimum value of core loss by appropriately selecting the above composition.
- the following characteristics can be obtained: 1200 kW / ni 3 or less (measurement conditions: 100 kHz, 20 OmT).
- the saturation flux density at 100 ° C is 48 OmT or more (measurement magnetic field: 119 AZm), and the minimum core loss force S i 100 kWZm 3 or less (measurement condition: 100 (kHz, 20 OmT) You can also.
- the saturation magnetic flux density of 50 OMT or more at 100 ° C (measured magnetic field: 1 1 94A / m), the minimum value of core loss 1 000 kWZm 3 below (measuring conditions: 100 kHz, It is possible to obtain a characteristic of 20 OmT, which cannot be obtained conventionally.
- the ferrite material of the present invention can set the bottom temperature in the range of 60 to 130 ° C, and more preferably in the range of 80 to 120 ° C. Therefore, the bottom temperature of the ferrite component using the ferrite material of the present invention exists in a practical use temperature range. Moreover, the ferrite material of the present invention has a high initial magnetic permeability at room temperature of 700 or more, and even 800 or more.
- a manufacturing method suitable for the filler material according to the present invention will be described.
- a raw material of the main component powder of an oxide or a compound which becomes an oxide by heating is used. Specifically, it is possible to have use of F e 2 ⁇ 3 powder, Mn 3 ⁇ 4 powder Oyobi Zn_ ⁇ powder.
- the main component is of the MnZnNi type (the same applies to the case of the MnZnNiLi type), further prepare NiO powder or the like.
- the case where the main component M n Z n L i system (same applies to the case of the Mn Z nN i L i system), providing a L i 2 CO 3 powder and the like to further.
- the average particle size of each raw material powder should be appropriately selected in the range of 0.1 to 3.0 ⁇ .
- the calcining temperature may be selected within the range of 800 to 1000 ° C.
- the calcining atmosphere may be N 2 or atmospheric.
- the calcining stabilization time may be appropriately selected within the range of 0.5 to 5.0 hours.
- the calcined body is ground, for example, to an average particle size of about 0.5 to 2.0 ⁇ m.
- the powder of the composite oxide containing two or more metals is not limited to the above-mentioned raw material of the main component, and the raw material of the main component may be used.
- a composite oxide powder containing Fe and Mn can be obtained.
- the powder of the composite oxide and Zn powder may be mixed to be used as a main component material. In such a case, calcining is unnecessary.
- an oxide or a compound which becomes an oxide by heating Powders can also be used.
- S i 0 2 , C a C 0 3 , Nb 2 0 5 , Z r 0 2 , T a 2 0 5 , In 2 0 5 , G a 2 0 5 , S n 0 2 , T i ⁇ 2, Mo0 3, V 2 0 5) Ge_ ⁇ 2, B i 2 ⁇ 3, can be used S b 2 0 3 and the like.
- powder P compound is obtained by heating, if example embodiment (Ca 3 (P0 4) 2 ) or the like can be used.
- the raw material powders of these subcomponents are mixed with the main component powder pulverized after calcining.
- the mixed powder can be calcined.
- the mixed powder composed of the main component and the subcomponent is granulated into granules so that the subsequent molding step can be smoothly performed.
- Granulation can be performed using, for example, a spray dryer.
- a small amount of a suitable binder, for example, polyvinyl alcohol (PVA) is added to the mixed powder, and the mixture is spray-dried and dried.
- PVA polyvinyl alcohol
- the thus obtained granules preferably have an average particle size of about 80 to 200 ⁇ .
- the obtained granules are formed into a desired shape using, for example, a press having a mold having a predetermined shape. Then, in the next firing step, the compact is fired.
- the firing temperature can be appropriately selected from the range of 1250 to 1450 ° C. However, in order to sufficiently bring out the effects of the ferrite material of the present invention, it is desirable that the molded body be fired in the range of 1300 to 1400 ° C.
- the ferrite material according to the invention can achieve a relative density of 93% or more, more preferably 95% or more.
- the ferrite material according to the present invention desirably has an average crystal grain size in the range of 5 to 30 im. If the average grain size is smaller than 5 ⁇ , the hysteresis loss increases. On the other hand, if the average grain size exceeds 30 ⁇ , the eddy current loss increases. Desirable average crystal grain size is 10 to 20 ⁇ .
- the first to sixth embodiments and the eighth embodiment described below relate to an MnZnNi-based funilite.
- the seventh embodiment is an MnZn-based
- the embodiment relates to a MnZnLi-based ferrite
- the thirteenth to fifteenth embodiments relate to a MnZnNiLi-based ferrite.
- a ferrite core having the composition shown in FIG. 1 was produced.
- the main component material F e 2 ⁇ 3 powder, MnO powder, ZnO powder and N i O powder. After wet mixing these powders, they were calcined at 900 ° C for 2 hours. Next, the calcined product of the main component material and the subcomponent material were mixed.
- the subcomponent materials using S i 0 2 powder, Ca C0 3 powder, Nb 2 0 5 powder. The raw material of the sub-component was added to the calcined material of the main component and mixed with the powder frame. Crushing was performed until the average particle size of the calcined product was about 1.5 Aim. The obtained mixture was added with pinda, granulated, and then molded to obtain a toroidal molded body.
- the obtained molded body was fired at a temperature of 1350 ° C. (a stable part for 5 hours and a stable part oxygen partial pressure of 1%) under oxygen partial pressure control to obtain a ferrite core.
- the ferrite material according to the present invention has a saturation magnetic flux density of 45 OmT or more equivalent to that of Conventional Examples 1 to 4.
- the core loss of the ferrite material according to the present invention is 1000 kW / m 3 or less, and it can be seen that the core loss is significantly reduced as compared with Conventional Examples 1 to 4.
- saturation magnetic flux density of 50 OmT or more And 8 0 0 kWZm 3 can be combine the following core losses.
- Comparative Example 1 Sample N o. 1, sample N o. 2, the sample N o. 3 and Comparative Example 2, the F e 2 0 3 in this order is increasing. Among them, F e 2 0 if 3 is less than the range of 6 0. Omo l% and the present invention (Comparative Example 1), and 7 when 0.0 greater than the range of mo 1% and the present invention (Comparative Example 2 It is clear that the saturation magnetic flux density is low and the core loss is large.
- the amount of NiO When the amount of NiO is 2.Omo 1%, when the amount of NiO is 4.Omol%, it shows a particularly high saturation magnetic flux density.
- the core loss of a comparative example 5 in consideration of the fact that more than 1 3 0 0 kWZm 3, it is necessary to set the amount of N i O.
- the amount of Ni N added should be around 2 to 4 mol%.
- the ferrite material according to the present invention can set the pot temperature within the range of 80 to 120 ° C. Also, it can be seen that the sample according to the present invention has the same initial permeability i) as the conventional example.
- a ferrite core having the composition shown in FIG. 2 was produced through the same steps as in the first example.
- magnetic properties and the like were measured under the same conditions as in the first example. The results are shown in FIG.
- the core loss (P cv) can be reduced by adding predetermined amounts of Si and Ca as the first subcomponents.
- S i the core loss increases when the added amount is 300 p pm in S i 0 2 conversion.
- C a when the addition amount of the addition amount of 3000 ppm at C a C0 3 terms, the core loss increases.
- Nb 2 0 5 is in the second sub-component, Z r 0 2, Ta 2 ⁇ 5, is in the fourth subcomponent G E_ ⁇ 2, a large effect of reducing the core loss.
- the Nb 2 0 5, 400 because p added in an amount exceeding pm and is rather increased core loss, it is desirable that the following amount 400 p pm.
- a ferrite core having the composition shown in FIG. 4 was produced through the same steps as in the first example.
- magnetic properties and the like were measured under the same conditions as in the first example. The results are shown in FIG.
- a ferrite core having the composition shown in FIG. 5 was produced in the same process as in the first example except that the firing temperature and the oxygen partial pressure during firing were set to the conditions shown in FIG. In addition, magnetic properties and the like were measured under the same conditions as in the first example. The results are shown in Fig. 5.
- the saturation magnetic flux density (Bs) tends to improve as the firing temperature increases.
- the core loss (P c V) tends to increase, and the initial permeability ⁇ i) tends to decrease. Therefore, it is desirable to set the firing temperature at 1380 ° C or less, more specifically, in the range of 1300 to 1380 ° C.
- the relative densities of the sample Nos. 35 to 37 and 40 to 43 were measured. In addition, for Sample No. 35 and Sample Nos. 40 to 43, the average crystal grain size was also measured. The results are shown in FIG. The relative densities of the ferrite cores obtained in Sample Nos. 35 to 37 and Sample Nos. 40 to 43 were all over 95%. The ferrite cores obtained in Sample No. 35 and Sample Nos. 40 to 43 had an average crystal grain size in the range of 10 to 25 m. Also, from the results of Sample Nos. 36 to 39, Mo O 3 and P as the fourth subcomponents can obtain a high saturation magnetic flux density even at a relatively low firing temperature of 1300 ° C. It turns out that it is an effective additive.
- P is the firing temperature 1340 ° C or less, still more is inferred that can be set at about 12 80 to 1,330 ° C.
- Samples other than Sample Nos. 38 and 39 also contain P as impurities at about 7 ppm.
- a sixth example shows an experiment performed to confirm a change in magnetic properties and the like when low-temperature sintering is performed on a MnZnNi-based ferrite with a fourth subcomponent added.
- the magnetic properties and the like were measured under the same conditions as in the first example. The results are shown in FIG. The fourth subcomponent except P was added as an oxide. P was added as calcium phosphate. In Fig. 6, for P, the amount of P added is shown. Further, JP 'raw fourth ferrite core without added accessory ingredients firing temperature and 1300 ° C Suruga (Sample No. 35), a fourth ferrite cores (sample No addition of Mo 0 3 as subcomponent 36, 37) are also shown in Fig. 6 for convenience of comparison. The firing time for sample Nos. 44 to 57 was 5 hours.
- the addition of the fourth subcomponent improved the saturation magnetic flux density (B s).
- Sample Nos. 36, 37, and 44-57, to which the fourth subcomponent was added all had a core loss (P cv) of 1000 kW / m 3 or less. Therefore, it can be said that the addition of the fourth subcomponent is effective in improving the saturation magnetic flux density (B s) while suppressing an increase in the core loss (P cv).
- the ferrite material according to the present invention can set the bottom temperature within the range of 80 to 120 ° C. Further, it can be seen that the ferrite material according to the present invention also obtains an initial magnetic permeability ⁇ ⁇ ⁇ i) equivalent to that of the conventional example. In addition, all of the ferrite materials according to the present invention exhibited a relative density of 95% or more.
- a ferrite core having the composition shown in FIG. 7 was produced by the same steps as in the first example except that the NiO powder was not used as the main component material and the fourth subcomponent was added.
- magnetic properties and the like were measured under the same conditions as in the first example. The results are shown in Fig. 7. The firing time and oxygen partial pressure during firing of Sample Nos. 58 to 61 are also shown in FIG.
- the addition of the fourth subcomponent contributes to the improvement of the saturation magnetic flux density (B s) and the low-temperature sintering even when Ni is not contained as a main component. It was also found that the bottom temperature could be set in the range of 100 to 110 ° C. even when Ni was not contained as a main component.
- a ferrite core having the composition shown in FIG. 8 was produced by the same steps as in the first embodiment except that the firing temperature and the oxygen partial pressure during firing were set to the conditions shown in FIG.
- the magnetic properties and the like were measured under the same conditions as in the first example. The results are shown in Fig. 8.
- Li amount As shown in FIG. 9 and FIG. As the amount of 5 (hereinafter simply referred to as “Li amount”) increases, the saturation magnetic flux density at 100 ° C gradually increases, and when the Li amount exceeds 1% lmo, it exceeds 50 OmT. Shows the saturation magnetic flux density of. However, the saturation magnetic flux density gradually decreases from the peak of the Li amount 1 to 2mo 1%, and when the Li amount becomes 4mo 1%, the same value as when no Li is contained is shown. From the above results, L i 0. . 5 amount that is contained in the range of less than 41110 1%, 100 ° saturation magnetic flux density of 49 OMT or in C, further it was confirmed that it can be at least 50 OMT. Preferably L i O 0. 5 weight 0. 2 ⁇ 3. 5 mol%, more preferably L i O 0. 5 amount is 0. 5 ⁇ 3mo l%.
- FIG. 9 shows the saturation magnetic flux density at room temperature as well as the saturation magnetic flux density at 100 ° C.
- the case where no Li is contained exhibits the highest saturation magnetic flux density, and the saturation magnetic flux density gradually decreases as the Li amount increases.
- the fluctuation of the saturation magnetic flux density at room temperature due to the inclusion of Li shows a different tendency from that at 100 ° C described above.
- the bottom temperature shifts to a higher temperature side due to the inclusion of Li.
- the filler material of the present invention containing a predetermined amount of Li, the bottom It was confirmed that the temperature could be set within the range of 80 to 120 ° C, and that the minimum value of core loss in that temperature range could be 1200 kW / m 3 or less.
- the bottom temperature is as low as 40 ° C.
- the Li amount becomes 4 mol%, it is possible to set the bottom temperature within the range of 80 to 120 ° C, but the core loss becomes as large as 1800 kWZm 3 or more.
- Sample Nos. 67 and 68 according to the present invention have a high initial magnetic permeability of 700 or more.
- a ferrite core having the composition shown in FIG. 11 was produced through the same steps as in the ninth embodiment, and the characteristics and the like were measured in the same manner as in the ninth embodiment. The results are also shown in FIG.
- the filler material according to the present invention can set the bottom temperature within the range of 80 to 120 ° C., and at least 48 OmT or higher than the conventional examples 1 to 3. Of the saturation magnetic flux density.
- the ferrite material according to the present invention has a core loss of 1200 kW / m 3 or less, which indicates that the core loss is reduced as compared with the conventional example.
- the ferrite material according to the present invention can have a saturation magnetic flux density of 48 OmT or more, a core loss of 1200 kW / m 3 or less, and an initial magnetic permeability of 600 or more.
- Comparative Example 1 1, sample N o. 69, sample N o. 68, sample N o. 70 and Comparative Example 12, F e 2 0 3 is increased in this order. Among them, if F e 2 0 3 is less than the range of 60. 0 mo 1% and the present invention, and 70. Omo l% and much! / From the scope of the present invention, the saturation magnetic flux density and low in the case Koa It can be seen that the loss is large.
- Comparative Example 13 SN No. 71, Sample No. 72, and Comparative Example 14, Z ⁇ increases in this order. It can be seen that the core loss is large when ZnO is 11.0 mol%, which is less than the range of the present invention. On the other hand, when ZnO is 21.0mo 1%, which is more than the range of the present invention, the bottom temperature cannot be set within the range of 80 to 120 ° C.
- a ferrite core having the composition shown in FIG. 12 was produced through the same steps as in the ninth embodiment. Magnetic properties and the like were measured under the same conditions as in the ninth example. The results are shown in Fig. 12.
- the sample Nos. 86 to 91 to which the fourth subcomponent was added all had a relative density of 95% or more and a relative density of 49 OmT or more even at a relatively low firing temperature of 1300 ° C. It achieves a saturation magnetic flux density (B s) and a core loss (P cv) of 1100 kWZm 3 or less.
- the bottom temperature (B.Terap.) Is set within a desired temperature range (60 to 130 ° C.). be able to. (Thirteenth embodiment)
- Example 1 was the same as Example 1 except that Li 2 C ⁇ 3 powder was further used as the main component material. Through the same steps, a ferrite core having the composition shown in FIG. 15 was produced. In addition, magnetic properties and the like were measured under the same conditions as in the first example. The results are shown in Fig. 15. For convenience of comparison, FIG. 15 shows the characteristics and the like of the MnZn-based ferrite material disclosed in Japanese Patent Application Laid-Open No. 2000-159523 as Conventional Examples 1-4. The characteristics of the MnZn-based ferrite material disclosed in JP-B-63-59241 are shown.
- any of the ferrite materials according to the present invention can set the bottom temperature within the range of 80 to 120 ° C.
- the ferrite material according to the present invention may be a 1 300 kWZm 3 below core loss, and low have value than the conventional example.
- the ferrite material according to the present invention can have both a high saturation magnetic flux density of 480 mT or more and an initial magnetic permeability of 600 or more.
- NiO content is 6.
- the content of NiO is most preferably in the range of 0.2 to 5 mol%, more preferably in the vicinity of 2 to 4 mol%.
- FIG. 15 shows, as Conventional Example 5, the bottom temperature of a MnZnNi-based ferrite material containing Ni in the main composition.
- Conventional Example 6 the bottom temperature of a MnZnLi-based ferrite material containing Li in the main composition is shown.
- the N I_ ⁇ 5MO 1% or less (not inclusive of 0) and L I_ ⁇ 0.5 to 4Mo 1% In the sample Nos. 92 to 97 of the present invention containing less than (but not including 0), the bottom temperature could be set within the range of 80 to 120 ° C, while the conventional example The bottom temperature was as high as 240 ° C or more, and the bottom temperature could not be set within the range desired by the present invention (60 to 130 ° C). From this, it can be seen that not only the selection of the components constituting the main composition, but also the combination and the content of each component greatly affect characteristics such as the bottom temperature.
- a ferrite core having the composition shown in FIGS. 17 and 18 was produced by the same steps as in the thirteenth embodiment. Magnetic properties and the like were measured under the same conditions as in the thirteenth example. The results are shown in FIGS. 17 and 18.
- the second subcomponent (Nb 2 0 5, Z R_ ⁇ 2, Ta 2 ⁇ 5, I n 2 0 5, Ga 2 ⁇ 5), the third subcomponent (Sn_ ⁇ 2, T i 0 2 ) or the fourth subcomponent (G e O
- the core loss (P cv) is also less than 49 OmT and the saturation magnetic flux density is less than 1300 kW / m 3 .
- the bottom temperature (B. Temp.) Is set within the desired temperature range (60 to 130 ° C.).
- the bottom temperature can be set in a temperature range (60 to 130 ° C) where a general transformer or the like is used, and the saturation magnetic flux density in the temperature range is high and the loss is low.
- a ferrite material can be obtained.
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Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN101807463A (zh) * | 2010-03-31 | 2010-08-18 | 苏州天铭磁业有限公司 | 一种兼有高起始磁导率和低损耗的MnZn铁氧体材料及其制备方法 |
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Families Citing this family (17)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPWO2007032338A1 (ja) | 2005-09-13 | 2009-03-19 | 日立金属株式会社 | フェライト材料 |
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JP2015006972A (ja) * | 2013-05-28 | 2015-01-15 | Tdk株式会社 | フェライト及びトランス |
JP6032379B2 (ja) * | 2015-04-02 | 2016-11-30 | Tdk株式会社 | フェライト組成物および電子部品 |
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JP2017061402A (ja) * | 2015-09-25 | 2017-03-30 | Tdk株式会社 | MnZnLiNi系フェライト、磁心およびトランス |
CN105503170A (zh) * | 2015-12-23 | 2016-04-20 | 苏州冠达磁业有限公司 | 一种宽温低损耗高磁导率软磁铁氧体及其制备方法 |
CN107216139A (zh) * | 2017-05-08 | 2017-09-29 | 中国计量大学 | 高饱和磁通密度MnZn铁氧体 |
CN112028619A (zh) * | 2020-09-16 | 2020-12-04 | 无锡斯贝尔磁性材料有限公司 | 一种高Bs低功耗锰锌软磁铁氧体材料及其制备方法 |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS61252610A (ja) * | 1985-05-01 | 1986-11-10 | Tohoku Metal Ind Ltd | 低損失酸化物磁性材料 |
JPH06310321A (ja) * | 1993-04-22 | 1994-11-04 | Matsushita Electric Ind Co Ltd | 酸化物磁性体材料 |
JPH0845725A (ja) * | 1994-07-29 | 1996-02-16 | Sumitomo Special Metals Co Ltd | 低損失酸化物磁性材料 |
US5518642A (en) * | 1992-01-14 | 1996-05-21 | Matsushita Electric Industrial Co., Ltd. | Oxide magnetic material |
Family Cites Families (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS565331A (en) * | 1979-06-26 | 1981-01-20 | Tdk Corp | Oxide type magnetic material of low electric power loss for use in high temperature range |
JPS60137830A (ja) * | 1983-12-24 | 1985-07-22 | Sumitomo Special Metals Co Ltd | Mn−Ζn系フエライトの製造方法 |
JPS60262404A (ja) * | 1984-06-11 | 1985-12-25 | Sumitomo Special Metals Co Ltd | Mn−Znフエライトの製造方法 |
JPS60262405A (ja) * | 1984-06-11 | 1985-12-25 | Sumitomo Special Metals Co Ltd | Mn−Znフエライトの製造方法 |
JPS61256967A (ja) * | 1985-05-08 | 1986-11-14 | 住友特殊金属株式会社 | Mn−Zn系フエライトの製造方法 |
JP2917706B2 (ja) * | 1992-10-07 | 1999-07-12 | 松下電器産業株式会社 | 酸化物磁性体材料 |
US5779930A (en) * | 1996-03-22 | 1998-07-14 | Tdk Corporation | Ferrite core for line filters |
JP2001068326A (ja) * | 1999-08-30 | 2001-03-16 | Tdk Corp | MnZn系フェライト |
JP3607203B2 (ja) * | 2000-03-31 | 2005-01-05 | Tdk株式会社 | MnZn系フェライトの製造方法、MnZn系フェライト、および電源用フェライトコア |
US7481946B2 (en) * | 2003-01-10 | 2009-01-27 | Tdk Corporation | Method for producing ferrite material and ferrite material |
JP4244193B2 (ja) * | 2004-01-30 | 2009-03-25 | Tdk株式会社 | MnZnフェライトの製造方法及びMnZnフェライト |
-
2003
- 2003-07-21 US US10/526,427 patent/US20060118756A1/en not_active Abandoned
- 2003-07-31 EP EP03798373A patent/EP1547988A4/en not_active Withdrawn
- 2003-07-31 KR KR1020047020370A patent/KR100627117B1/ko active IP Right Grant
- 2003-07-31 CN CN038139219A patent/CN1662470A/zh active Pending
- 2003-07-31 WO PCT/JP2003/009735 patent/WO2004028997A1/ja active Application Filing
- 2003-08-21 TW TW092123016A patent/TWI256380B/zh not_active IP Right Cessation
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS61252610A (ja) * | 1985-05-01 | 1986-11-10 | Tohoku Metal Ind Ltd | 低損失酸化物磁性材料 |
US5518642A (en) * | 1992-01-14 | 1996-05-21 | Matsushita Electric Industrial Co., Ltd. | Oxide magnetic material |
JPH06310321A (ja) * | 1993-04-22 | 1994-11-04 | Matsushita Electric Ind Co Ltd | 酸化物磁性体材料 |
JPH0845725A (ja) * | 1994-07-29 | 1996-02-16 | Sumitomo Special Metals Co Ltd | 低損失酸化物磁性材料 |
Non-Patent Citations (1)
Title |
---|
See also references of EP1547988A4 * |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN101807463A (zh) * | 2010-03-31 | 2010-08-18 | 苏州天铭磁业有限公司 | 一种兼有高起始磁导率和低损耗的MnZn铁氧体材料及其制备方法 |
CN113149630A (zh) * | 2021-04-08 | 2021-07-23 | 电子科技大学 | 一种高磁导率高Bs高Tc的MnZn铁氧体材料及其制备方法 |
CN113149630B (zh) * | 2021-04-08 | 2022-11-08 | 电子科技大学 | 一种高磁导率高Bs高Tc的MnZn铁氧体材料及其制备方法 |
Also Published As
Publication number | Publication date |
---|---|
TW200415134A (en) | 2004-08-16 |
CN1662470A (zh) | 2005-08-31 |
EP1547988A4 (en) | 2007-12-05 |
KR20050039755A (ko) | 2005-04-29 |
KR100627117B1 (ko) | 2006-09-25 |
US20060118756A1 (en) | 2006-06-08 |
TWI256380B (en) | 2006-06-11 |
EP1547988A1 (en) | 2005-06-29 |
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