CN106977190A - MnZnLiNi based ferrites, magnetic core and transformer - Google Patents
MnZnLiNi based ferrites, magnetic core and transformer Download PDFInfo
- Publication number
- CN106977190A CN106977190A CN201610847748.4A CN201610847748A CN106977190A CN 106977190 A CN106977190 A CN 106977190A CN 201610847748 A CN201610847748 A CN 201610847748A CN 106977190 A CN106977190 A CN 106977190A
- Authority
- CN
- China
- Prior art keywords
- content
- oxide
- moles
- scaled
- mnznlini
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 229910000859 α-Fe Inorganic materials 0.000 title claims abstract description 42
- XLOMVQKBTHCTTD-UHFFFAOYSA-N Zinc monoxide Chemical compound [Zn]=O XLOMVQKBTHCTTD-UHFFFAOYSA-N 0.000 claims abstract description 58
- UQSXHKLRYXJYBZ-UHFFFAOYSA-N Iron oxide Chemical compound [Fe]=O UQSXHKLRYXJYBZ-UHFFFAOYSA-N 0.000 claims abstract description 36
- 239000011787 zinc oxide Substances 0.000 claims abstract description 29
- AMWRITDGCCNYAT-UHFFFAOYSA-L hydroxy(oxo)manganese;manganese Chemical compound [Mn].O[Mn]=O.O[Mn]=O AMWRITDGCCNYAT-UHFFFAOYSA-L 0.000 claims abstract description 23
- 239000004615 ingredient Substances 0.000 claims abstract description 23
- 229910001947 lithium oxide Inorganic materials 0.000 claims abstract description 17
- 229910000480 nickel oxide Inorganic materials 0.000 claims abstract description 17
- GNRSAWUEBMWBQH-UHFFFAOYSA-N oxonickel Chemical compound [Ni]=O GNRSAWUEBMWBQH-UHFFFAOYSA-N 0.000 claims abstract description 17
- JKQOBWVOAYFWKG-UHFFFAOYSA-N molybdenum trioxide Inorganic materials O=[Mo](=O)=O JKQOBWVOAYFWKG-UHFFFAOYSA-N 0.000 claims abstract description 11
- 229910013573 LiO0.5 Inorganic materials 0.000 claims abstract description 7
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 claims abstract description 5
- 230000008859 change Effects 0.000 claims description 3
- 239000000843 powder Substances 0.000 description 33
- 230000004907 flux Effects 0.000 description 18
- 230000020169 heat generation Effects 0.000 description 18
- 239000000463 material Substances 0.000 description 16
- 230000000694 effects Effects 0.000 description 12
- 238000006243 chemical reaction Methods 0.000 description 11
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 8
- 238000001354 calcination Methods 0.000 description 8
- 150000001875 compounds Chemical class 0.000 description 8
- 239000000203 mixture Substances 0.000 description 8
- 239000001301 oxygen Substances 0.000 description 8
- 229910052760 oxygen Inorganic materials 0.000 description 8
- 239000002245 particle Substances 0.000 description 8
- 239000011575 calcium Substances 0.000 description 7
- VTYYLEPIZMXCLO-UHFFFAOYSA-L calcium carbonate Substances [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 description 7
- 238000010438 heat treatment Methods 0.000 description 7
- 230000009467 reduction Effects 0.000 description 7
- 238000005245 sintering Methods 0.000 description 7
- 230000015572 biosynthetic process Effects 0.000 description 6
- 239000013078 crystal Substances 0.000 description 6
- 238000000034 method Methods 0.000 description 6
- 239000010955 niobium Substances 0.000 description 6
- GNTDGMZSJNCJKK-UHFFFAOYSA-N Vanadium(V) oxide Inorganic materials O=[V](=O)O[V](=O)=O GNTDGMZSJNCJKK-UHFFFAOYSA-N 0.000 description 5
- 230000008901 benefit Effects 0.000 description 5
- 229910000019 calcium carbonate Inorganic materials 0.000 description 5
- 230000000052 comparative effect Effects 0.000 description 5
- 238000005204 segregation Methods 0.000 description 5
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N silicon dioxide Inorganic materials O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 5
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 4
- 239000002131 composite material Substances 0.000 description 4
- 229910000476 molybdenum oxide Inorganic materials 0.000 description 4
- PQQKPALAQIIWST-UHFFFAOYSA-N oxomolybdenum Chemical compound [Mo]=O PQQKPALAQIIWST-UHFFFAOYSA-N 0.000 description 4
- 239000002994 raw material Substances 0.000 description 4
- 239000000377 silicon dioxide Substances 0.000 description 4
- 239000004372 Polyvinyl alcohol Substances 0.000 description 3
- 230000005540 biological transmission Effects 0.000 description 3
- 229910052681 coesite Inorganic materials 0.000 description 3
- 229910052906 cristobalite Inorganic materials 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 229910052751 metal Inorganic materials 0.000 description 3
- 239000002184 metal Substances 0.000 description 3
- 239000011812 mixed powder Substances 0.000 description 3
- ZKATWMILCYLAPD-UHFFFAOYSA-N niobium pentoxide Inorganic materials O=[Nb](=O)O[Nb](=O)=O ZKATWMILCYLAPD-UHFFFAOYSA-N 0.000 description 3
- 230000003647 oxidation Effects 0.000 description 3
- 238000007254 oxidation reaction Methods 0.000 description 3
- 229920002451 polyvinyl alcohol Polymers 0.000 description 3
- 239000007921 spray Substances 0.000 description 3
- 230000006641 stabilisation Effects 0.000 description 3
- 238000011105 stabilization Methods 0.000 description 3
- 229910052682 stishovite Inorganic materials 0.000 description 3
- 229910052905 tridymite Inorganic materials 0.000 description 3
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 description 2
- MCMNRKCIXSYSNV-UHFFFAOYSA-N Zirconium dioxide Chemical compound O=[Zr]=O MCMNRKCIXSYSNV-UHFFFAOYSA-N 0.000 description 2
- 229910052791 calcium Inorganic materials 0.000 description 2
- 238000011156 evaluation Methods 0.000 description 2
- 239000007789 gas Substances 0.000 description 2
- XEEYBQQBJWHFJM-UHFFFAOYSA-N iron Substances [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 238000002156 mixing Methods 0.000 description 2
- 229910052758 niobium Inorganic materials 0.000 description 2
- 229910052757 nitrogen Inorganic materials 0.000 description 2
- 229910052710 silicon Inorganic materials 0.000 description 2
- XOLBLPGZBRYERU-UHFFFAOYSA-N tin dioxide Chemical compound O=[Sn]=O XOLBLPGZBRYERU-UHFFFAOYSA-N 0.000 description 2
- 229910052720 vanadium Inorganic materials 0.000 description 2
- ODINCKMPIJJUCX-UHFFFAOYSA-N Calcium oxide Chemical compound [Ca]=O ODINCKMPIJJUCX-UHFFFAOYSA-N 0.000 description 1
- BVKZGUZCCUSVTD-UHFFFAOYSA-L Carbonate Chemical compound [O-]C([O-])=O BVKZGUZCCUSVTD-UHFFFAOYSA-L 0.000 description 1
- FUJCRWPEOMXPAD-UHFFFAOYSA-N Li2O Inorganic materials [Li+].[Li+].[O-2] FUJCRWPEOMXPAD-UHFFFAOYSA-N 0.000 description 1
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 description 1
- PWHULOQIROXLJO-UHFFFAOYSA-N Manganese Chemical compound [Mn] PWHULOQIROXLJO-UHFFFAOYSA-N 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 238000004458 analytical method Methods 0.000 description 1
- 239000011230 binding agent Substances 0.000 description 1
- 230000033228 biological regulation Effects 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- XUCJHNOBJLKZNU-UHFFFAOYSA-M dilithium;hydroxide Chemical compound [Li+].[Li+].[OH-] XUCJHNOBJLKZNU-UHFFFAOYSA-M 0.000 description 1
- 230000003292 diminished effect Effects 0.000 description 1
- 230000003467 diminishing effect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000005469 granulation Methods 0.000 description 1
- 230000003179 granulation Effects 0.000 description 1
- 229910052744 lithium Inorganic materials 0.000 description 1
- 229910052808 lithium carbonate Inorganic materials 0.000 description 1
- 229910052748 manganese Inorganic materials 0.000 description 1
- 239000011572 manganese Substances 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 229910000484 niobium oxide Inorganic materials 0.000 description 1
- URLJKFSTXLNXLG-UHFFFAOYSA-N niobium(5+);oxygen(2-) Chemical compound [O-2].[O-2].[O-2].[O-2].[O-2].[Nb+5].[Nb+5] URLJKFSTXLNXLG-UHFFFAOYSA-N 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- PBCFLUZVCVVTBY-UHFFFAOYSA-N tantalum pentoxide Inorganic materials O=[Ta](=O)O[Ta](=O)=O PBCFLUZVCVVTBY-UHFFFAOYSA-N 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
- 229910052725 zinc Inorganic materials 0.000 description 1
- 239000011701 zinc Substances 0.000 description 1
- 229910052726 zirconium Inorganic materials 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- 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
- C04B35/2608—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
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B35/00—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
- C04B35/622—Forming processes; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
-
- 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
- H01F1/342—Oxides
- H01F1/344—Ferrites, e.g. having a cubic spinel structure (X2+O)(Y23+O3), e.g. magnetite Fe3O4
-
- 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
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
- C04B2235/02—Composition of constituents of the starting material or of secondary phases of the final product
- C04B2235/30—Constituents and secondary phases not being of a fibrous nature
- C04B2235/32—Metal oxides, mixed metal oxides, or oxide-forming salts thereof, e.g. carbonates, nitrates, (oxy)hydroxides, chlorides
- C04B2235/3205—Alkaline earth oxides or oxide forming salts thereof, e.g. beryllium oxide
- C04B2235/3208—Calcium oxide or oxide-forming salts thereof, e.g. lime
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
- C04B2235/02—Composition of constituents of the starting material or of secondary phases of the final product
- C04B2235/30—Constituents and secondary phases not being of a fibrous nature
- C04B2235/32—Metal oxides, mixed metal oxides, or oxide-forming salts thereof, e.g. carbonates, nitrates, (oxy)hydroxides, chlorides
- C04B2235/3231—Refractory metal oxides, their mixed metal oxides, or oxide-forming salts thereof
- C04B2235/3239—Vanadium oxides, vanadates or oxide forming salts thereof, e.g. magnesium vanadate
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
- C04B2235/02—Composition of constituents of the starting material or of secondary phases of the final product
- C04B2235/30—Constituents and secondary phases not being of a fibrous nature
- C04B2235/32—Metal oxides, mixed metal oxides, or oxide-forming salts thereof, e.g. carbonates, nitrates, (oxy)hydroxides, chlorides
- C04B2235/3231—Refractory metal oxides, their mixed metal oxides, or oxide-forming salts thereof
- C04B2235/3256—Molybdenum oxides, molybdates or oxide forming salts thereof, e.g. cadmium molybdate
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
- C04B2235/02—Composition of constituents of the starting material or of secondary phases of the final product
- C04B2235/30—Constituents and secondary phases not being of a fibrous nature
- C04B2235/32—Metal oxides, mixed metal oxides, or oxide-forming salts thereof, e.g. carbonates, nitrates, (oxy)hydroxides, chlorides
- C04B2235/327—Iron group oxides, their mixed metal oxides, or oxide-forming salts thereof
- C04B2235/3279—Nickel oxides, nickalates, or oxide-forming salts thereof
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
- C04B2235/02—Composition of constituents of the starting material or of secondary phases of the final product
- C04B2235/30—Constituents and secondary phases not being of a fibrous nature
- C04B2235/34—Non-metal oxides, non-metal mixed oxides, or salts thereof that form the non-metal oxides upon heating, e.g. carbonates, nitrates, (oxy)hydroxides, chlorides
- C04B2235/3418—Silicon oxide, silicic acids or oxide forming salts thereof, e.g. silica sol, fused silica, silica fume, cristobalite, quartz or flint
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
- C04B2235/65—Aspects relating to heat treatments of ceramic bodies such as green ceramics or pre-sintered ceramics, e.g. burning, sintering or melting processes
- C04B2235/658—Atmosphere during thermal treatment
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
- C04B2235/70—Aspects relating to sintered or melt-casted ceramic products
- C04B2235/94—Products characterised by their shape
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
- C04B2235/70—Aspects relating to sintered or melt-casted ceramic products
- C04B2235/95—Products characterised by their size, e.g. microceramics
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Ceramic Engineering (AREA)
- Power Engineering (AREA)
- Materials Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Structural Engineering (AREA)
- Organic Chemistry (AREA)
- Dispersion Chemistry (AREA)
- Inorganic Chemistry (AREA)
- Soft Magnetic Materials (AREA)
- Magnetic Ceramics (AREA)
- Compounds Of Iron (AREA)
Abstract
The present invention is a kind of MnZnLiNi based ferrites, and it contains iron oxide, zinc oxide, lithia, nickel oxide and manganese oxide as principal component.It is set to by the content of iron oxide by Fe2O3It is scaled a moles of %；The content of zinc oxide is set to be scaled b moles of % by ZnO；The content of lithia is set to by LiO0.5It is scaled c moles of %；The content of nickel oxide is set to be scaled d moles of % by NiO；The content of manganese oxide is set in the case of being scaled e moles of % by MnO, 57.0≤a≤62.0,3.0≤b≤11.0,1.2≤c≤4.0,0.2≤d≤6.0, a+b+c+d+e=100 is met.Further, containing by MoO310~500 weight ppm Mo is scaled as accessory ingredient.
Description
Technical field
The present invention relates to a kind of MnZnLiNi based ferrites, magnetic core and transformer.
Background technology
In recent years, electronic equipment develops to miniaturization, high output.Be accompanied by this, various parts to it is highly integrated, at a high speed
Processingization develops, it is desirable to the high current of the power transmission line of supply electric power.Furthermore, it desired to performance as defined in also keeping at high temperature
Power transmission line.Therefore, transformer for power transmission line etc. is also required that to be used with high current at high temperature.
For example, recorded a kind of sintered body in patent document 1, it is by iron oxide, zinc oxide, nickel oxide, lithia, oxidation
Manganese is as principal component, and the content of each principal component is within the limits prescribed.Saturation flux density at 100 DEG C of the sintered body is
More than 480mT (determines magnetic field：1194A/m), the minimum value of core loss is 1300kW/m3(condition determination below：100kHz、
200mT).Further, the bottom temp that the temperature of minimum value is shown as core loss is 60~130 DEG C.
But, in recent years, under 100 DEG C or so of high-temperature area, it is desirable to which core loss is smaller, saturation flux density is higher
Sintered body.Further, in the electronic unit for automobile etc., by high temperature or the operating of use environment when heating cause
Temperature rise, it is desirable to it is excellent in terms of high temperature driven stability.
Patent document 1：Japanese Unexamined Patent Publication 2005-029417 publications
The content of the invention
It is an object of the invention to provide a kind of MnZnLiNi based ferrites, its under high-temperature area compared with prior art
Core loss (also referred to as magnetic loss, core loss) is small, and heat generation characteristic is high, and saturation flux density is high.
Means for solving technical problem
In order to realize above-mentioned purpose, MnZnLiNi based ferrites of the invention are characterised by, to contain iron oxide, oxidation
Zinc, lithia, nickel oxide and manganese oxide as principal component MnZnLiNi based ferrites, wherein, in containing the iron oxide
Amount is set to Fe2O3It is scaled a moles of %；The content of the zinc oxide is set to be scaled b moles of % by ZnO；By the oxidation
The content of lithium is set to by LiO0.5It is scaled c moles of %；The content of the nickel oxide is set to be scaled d moles of % by NiO；Will
The content of the manganese oxide is set in the case of being scaled e moles of % by MnO, is met：
57.0≤a≤62.0；
3.0≤b≤11.0；
1.2≤c≤4.0；
0.2≤d≤6.0；
A+b+c+d+e=100,
Further, containing by MoO310~500 weight ppm Mo is scaled as accessory ingredient.
The MnZnLiNi based ferrites of the invention as characterized above core loss in high-temperature area is small, heat generation characteristic
Height, and saturation flux density is high.
The magnetic core of the present invention is made up of above-mentioned MnZnLiNi based ferrites.
The transformer of the present invention has used above-mentioned magnetic core.
Brief description of the drawings
Fig. 1 is the outside drawing of the E-type magnetic core of heat generation characteristic evaluation.
Embodiment
Hereinafter, illustrated for embodiments of the present invention.
The ferrite of present embodiment is MnZnLiNi based ferrites.MnZnLiNi based ferrites be in addition to iron oxide,
Also contain manganese oxide, zinc oxide, lithia and nickel oxide as the ferrite of principal component.
The principal component of the MnZnLiNi based ferrites of present embodiment only by iron oxide, manganese oxide, zinc oxide, lithia,
Nickel oxide is constituted, and total content of these materials is 100 moles of %.That is, it is set to by the content of iron oxide by Fe2O3It is scaled a
Mole %；The content of zinc oxide is set to be scaled b moles of % by ZnO；The content of lithia is set to by LiO0.5It is scaled c
Mole %；The content of nickel oxide is set to be scaled d moles of % by NiO；The content of manganese oxide is set to be scaled e by MnO and rubbed
In the case of your %, a+b+c+d+e=100.
In the MnZnLiNi based ferrites of present embodiment, if the content increase of iron oxide, the saturation flux at 100 DEG C
The tendency that density is improved.On the other hand, if the content of iron oxide is reduced, core loss during high temperature (is also referred to as magnetic loss
Consumption, core loss) have the tendency of to diminish.
The content of iron oxide presses Fe2O3It is scaled 57.0~62.0 moles of %.As described above, also containing iron oxide sometimes
Amount is designated as a moles of %.Content by iron oxide is that in above-mentioned scope, can make the saturation flux density and height at 100 DEG C
Core loss when warm is good.In addition, the content of iron oxide has for 62.0 moles of below % MnZnLiNi based ferrites
The good advantage of heat generation characteristic.In addition, the content of iron oxide is preferably 57.5~61.0 moles of %, more preferably 58.0~60.0
Mole %.Especially, the content of iron oxide has high-temperature storage special for 57.5~61.0 moles of % MnZnLiNi based ferrites
The good advantage of property.
In addition, heating when heat generation characteristic represents to drive magnetic core.Heat generation characteristic is better, and heating during driving magnetic core is got over
Small, temperature rises smaller caused by heating.
In the MnZnLiNi based ferrites of present embodiment, if the content increase of zinc oxide, there is magnetic core during high temperature
The tendency diminished is lost.But, if the content of zinc oxide is excessive, by the reduction of curie point, there is the saturation magnetic at 100 DEG C
Flux density is reduced, and core loss during high temperature becomes big tendency.On the other hand, when the content of zinc oxide is very few, by burning
The reduction of density is tied, saturation flux density when there are 100 DEG C is reduced, and core loss during high temperature becomes big tendency.
The content of zinc oxide is scaled 3.0~11.0 moles of % by ZnO.As described above, the content of zinc oxide is remembered sometimes
For b moles of %.By the content of zinc oxide in above-mentioned scope, when can make saturation flux density and the high temperature at 100 DEG C
Core loss it is good.Further, MnZnLiNi based ferrite of the content of zinc oxide in above-mentioned scope has heating
The good advantage of characteristic.In addition, the content of zinc oxide is preferably 4.0~10.0 moles of %, more preferably 5.0~8.0 moles %.
In the MnZnLiNi based ferrites of present embodiment, containing lithia for the saturation flux density at 100 DEG C
Raising it is effective.Raising to bottom temp described later is also effective.
The content of lithia presses LiO0.5It is scaled 1.2~4.0 moles of %.As described above, also sometimes by the content of lithia
It is designated as c moles of %.If the content of lithia is very few, the raising effect of the saturation flux density at 100 DEG C can not be given full play to
Really.If the content of lithia is excessive, core loss during high temperature becomes big.In addition, the content of lithia is in above-mentioned scope
MnZnLiNi based ferrites have the advantages that heat generation characteristic is good.In addition, the content of lithia is preferably 1.5~3.5 to rub
You are %, more preferably 1.8~3.0 moles %.In addition, lithia typically more is designated as Li2O, but in this application, in order that by Li
Conversion is clear and definite to calculate composition, is designated as LiO0.5。
It is effective for the raising of Curie temperature containing nickel oxide in the MnZnLiNi based ferrites of present embodiment.Moreover,
With the raising of Curie temperature, there is the tendency that the saturation flux density at 100 DEG C is also improved.Bottom temp described later is carried
It is high also effective.
The content of nickel oxide is scaled 0.2~6.0 mole of % by NiO.As described above, also the content of nickel oxide is remembered sometimes
For d moles of %.If the content of nickel oxide is very few, saturation flux density reduction at 100 DEG C.If the content mistake of nickel oxide
Many, then core loss during high temperature becomes big.In addition, the MnZnLiNi based ferrites of the content of nickel oxide within the above range have
The good advantage of heat generation characteristic.In addition, the content of nickel oxide is preferably 0.3~4.0 mole of %, more preferably 0.4~2.0 rubs
You are %.
In the MnZnLiNi based ferrites of present embodiment, manganese oxide is the surplus of principal component.As described above, also sometimes
The content of manganese oxide is designated as e moles of %.
The accessory ingredient of the MnZnLiNi based ferrites of present embodiment is the composition beyond above-mentioned principal component.In addition, following
The population parameter of the content of shown accessory ingredient is the overall content of principal component.
The MnZnLiNi based ferrites of present embodiment contain Mo as accessory ingredient.Mode to Mo is not limited, preferably
For molybdenum oxide.By molybdenum oxide and the composite effect of zinc oxide, so that the effect of core loss when reducing high temperature is big.Enter one
Step, in the case where the content of molybdenum oxide and zinc oxide to be set to appropriate, heat generation characteristic is improved by composite effect.In addition,
The MnZnLiNi based ferrites of present embodiment by containing Mo so that be easily reduced zinc oxide content (zinc oxide relative to
The overall presence ratio of principal component).
Mo content presses MoO3It is scaled 10~500 weight ppm.No matter Mo content it is very few or excessive, during high temperature
Core loss all becomes big, and heat generation characteristic is reduced.In addition, Mo content presses MoO3Conversion is preferably 100~400 weight ppm,
More preferably 150~300 weight ppm.
In addition, the content in Mo presses MoO3In the case of being scaled 10~50 weight ppm, with smaller Mo content from
And core loss during high temperature diminishes, heat generation characteristic is improved.From core loss when making Mo comparision contents small and making high temperature
From the viewpoint of diminishing, Mo content presses MoO3Conversion is preferably 10~50 weight ppm, particularly preferably 15~45 weight ppm.
The MnZnLiNi based ferrites of present embodiment can also be wrapped in the range of the action effect of the present invention is not departed from
Containing the accessory ingredient beyond above-mentioned Mo.Content to the accessory ingredient beyond Mo is not particularly limited.It can such as be set to total
Below 2000 weight ppm.
Species for the accessory ingredient beyond Mo is not particularly limited.Si, Ca, Zr, Nb, V, Ta, Sn can for example be contained
As accessory ingredient, other elements can also be contained as accessory ingredient.
Above-mentioned accessory ingredient can contain as the compound containing above-mentioned accessory ingredient.In addition, as containing it is above-mentioned it is secondary into
The species for the compound divided, is not particularly limited.Such as can enumerate oxide or carbonate.
In above-mentioned accessory ingredient, the accessory ingredient particularly preferably contained is Si, Ca, Nb, V.
Si segregations form resistive formation in crystal boundary.Resistive formation has the effect of reduction core loss.In addition, Si also leads to
Segregation is crossed to work as sintering aid in crystal boundary, and with the effect for improving sintered density.Si content presses SiO2Conversion
Preferably 50~300 weight ppm.Species for the compound containing Si is not particularly limited.Silica can for example be used
(SiO2)。
Ca segregations form resistive formation in crystal boundary.Resistive formation has the effect of reduction core loss.Ca is also by inclined
Analyse and worked in crystal boundary as sintering aid, with the effect for improving sintered density.Ca content presses CaCO3Conversion is preferably
500~2000 weight ppm.Species to the compound containing Ca is not particularly limited.Calcium carbonate (CaCO can for example be used3)
Or calcium oxide (CaO).
Nb segregations form resistive formation in crystal boundary.Resistive formation has the effect of reduction core loss.Nb content is pressed
Nb2O5Conversion is preferably 50~500 weight ppm.Species to the compound containing Nb is not particularly limited.It can such as use
Niobium oxide (Nb2O5)。
V works also by segregation in crystal boundary as sintering aid, with the effect for improving sintered density.V content
By V2O5Conversion is preferably 50~500 weight ppm.Species for the compound containing V is not particularly limited.It can such as make
With vanadium oxide (V2O5)。
Hereinafter, the preferred manufacture method for the MnZnLiNi based ferrites of present embodiment is illustrated.
As the material powder of principal component, for example, it can use the powder of oxide or turn into oxide by heating
The powder of compound.Specifically, Fe can be used2O3Powder, MnO powder, Mn3O4Powder, ZnO powder, NiO powder,
Li2CO3Powder etc., but be not particularly limited.
As the material powder of accessory ingredient, for example, it can use the powder of oxide or turn into oxide by heating
The powder of compound.Specifically, SiO can be used2、CaCO3、Nb2O5、ZrO2、Ta2O5、SnO2、TiO2、MoO3、V2O5Deng,
But it is not particularly limited.
As the material powder and/or the material powder of accessory ingredient of principal component, it can use containing metal of more than two kinds
And/or the powder of semimetallic composite oxides.In addition, the average grain diameter to each material powder is not particularly limited, for example may be used
Suitably to be selected in the range of 0.1~3.0 μm.
The material powder of the material powder of principal component and accessory ingredient is being carried out to be obtained by mixing after mixed-powder, carried out
Calcining, obtains calcining powder.Condition to calcining is not particularly limited.For example, equilibrium temperature can be set to 800~1000 DEG C,
It will be set to stabilization time 0.5~5.0 hour.Atmosphere to calcining is also not particularly limited.N can be for example set to2Atmosphere is big
In gas.
In addition, in the present embodiment, after the material powder of the material powder of principal component and accessory ingredient is mixed
Calcined, but it is also possible to mixed after only the material powder of principal component is calcined with the material powder of accessory ingredient,
Can also be without calcining.
In order to successfully carry out molding procedure below, calcining powder (being mixed-powder in the case of without calcining) can
To be a granulated into particle.Prilling process is not particularly limited.For example there is the method using spray dryer.In calcining powder (not
It is mixed-powder in the case of being calcined) the appropriate binding agent of middle addition, such as polyvinyl alcohol (PVA), preferably 0.4~
1.2wt%, it is sprayed and dried with spray dryer, it is possible thereby to be a granulated into particle.To the particle diameter of obtained particle
It is not particularly limited, for example, can makes 80~200 μm or so.
Obtained particle is for example shaped to desired shape using the press of the metal die with regulation shape.And
And, by the way that obtained formed body is sintered, so as to obtain the MnZnLiNi based ferrites of present embodiment.
Sintering condition is not particularly limited.For example, equilibrium temperature can be set to 1250~1450 DEG C, it can preferably set
For 1300~1400 DEG C.Stabilization time during sintering can be set to 1~10 hour, can preferably be set to 2~5 hours.Sinter gas
Atmosphere can for example be set to the N of oxygen concentration 0.5~5%2Atmosphere.
Additionally, it is preferred that controlling the change of the oxygen concentration in the temperature-fall period after sintering.Specifically, after sintering, while drop
Temperature is to 1000 DEG C, while reduction oxygen concentration, and the N that oxygen concentration is less than 0.1% is preferably set to below 1000 DEG C2Atmosphere.
The MnZnLiNi based ferrites of present embodiment especially by the composite effect with zinc oxide and molybdenum oxide so that
The core loss in high saturation flux density, and high-temperature region is also still maintained to diminish in high-temperature region.
For example, it is the magnetic under more than 90 DEG C, bottom temp as the bottom temp of the temperature of core loss display minimum value that can obtain
Core loss is 1100kW/m3Hereinafter, the MnZnLiNi based ferrites that the saturation flux density and at 100 DEG C is more than 480mT.
The MnZnLiNi based ferrites of present embodiment are also small even in the loss of high-temperature region inner magnetic core, and saturation flux
Density is also high, therefore, is suitable as magnetic core.It is particularly suitable for being made the magnetic core of the isallobaric device of Switching Power Supply.
But, the purposes of the MnZnLiNi based ferrites of present embodiment is not limited to above-mentioned magnetic core.In addition, by this reality
The purposes for applying the magnetic core of the MnZnLiNi based ferrites composition of mode is also not necessarily limited to the isallobaric device of above-mentioned Switching Power Supply.For example,
It can be also suitably used for choking-winding (chokes transformer), reactor, antenna etc..
Embodiment
Hereinafter, based on specific embodiment come the present invention will be described.
Make embodiment 1~46 and the FERRITE CORE of comparative example 1~42 with the composition shown in 1~table of table 5.
As the raw material of principal component, Fe is used2O3Powder, MnO powder, ZnO powder, NiO powder and LiO0.5Powder.As
The raw material of accessory ingredient, uses MoO3Powder, SiO2Powder, CaCO3Powder, Nb2O5Powder, V2O5Powder.By the raw material of principal component
And after the raw material mixing of accessory ingredient, calcined in an atmosphere at 900 DEG C 2 hours, obtained calcined material.
Next, calcined material is crushed 14 hours with steel ball mill.In addition, be crushed to the average grain of calcined material
Footpath turns into 1~2 μm.Moreover, adding 0.8wt%PVA in the calcined material of crushing, it is sprayed with spray dryer, done
It is dry, so as to be a granulated into particle.In addition, being granulated to the average grain diameter of particle turns into 80~200 μm.Moreover, relative to granulation
Particle, be molded and obtained the formed body of ring-shaped using the press of the metal die with ring-shaped.
By by obtained formed body under 1350 DEG C of equilibrium temperature, 5 hours stabilization time, the blanket of nitrogen of oxygen concentration 2%
It is sintered, thus obtains the FERRITE CORE (external diameter=31mm, internal diameter=19mm, thickness=7mm) of ring-shaped.In addition,
In temperature-fall period, make oxygen concentration monotone decreasing at 1350 DEG C~1000 DEG C, oxygen concentration is controlled below 1000 DEG C with as oxygen
Concentration is less than 0.1% blanket of nitrogen.
Each reality of the composition as 1~table of table 5 of FERRITE CORE obtained by being confirmed using fluorescent x-ray analyzer
Apply the composition of example and comparative example.In addition, in each embodiment and comparative example, on the accessory ingredient for not having to record in 1~table of table 5,
Confirm by SiO2Conversion contains Si in the range of 50~300 weight ppm；By CaCO3Conversion is 500~2000 weight ppm's
In the range of contain Ca；By Nb2O5Conversion contains Nb in the range of 50~500 weight ppm；By V2O5Conversion is in 50~500 weight
Contain V in the range of ppm.
On obtained FERRITE CORE, while making temperature change in the range of 25~140 DEG C with every 5 DEG C, while surveying
Determine core loss.The measure of core loss is carried out under frequency 100kHz, magnetic flux density 200mT.Core loss is shown minimum
The temperature of value is set to bottom temp Tb.In addition, the core loss under bottom temp is set into Pcv (Tb).It it is more than 90 DEG C by Tb
Situation be set to good.It is 1100kW/m by Pcv (Tb)3Following situation is set to good.In addition, Pcv (Tb) is more preferably
1000kW/m3Hereinafter, more preferably 800kW/m3Below.
Further, for obtained FERRITE CORE, the saturation flux density (Bs) at 100 DEG C is determined.Saturation flux
The measure of density is carried out in the case where determining magnetic field 1194A/m.Bs is set to good for more than 480mT situation.In addition, Bs is more preferably
For more than 485mT, more preferably more than 490mT.
Further, made in each example by the manufacture method same with the manufacture method of above-mentioned toroidal core
The E-type magnetic core of 2 heat generation characteristic evaluations.The shape being shaped as shown in Fig. 1 of E-type magnetic core, the size of E-type magnetic core is A=
50mm, B=20mm, C=15mm, D=12mm, E=34mm, F=14mm.
Combine the E-type magnetic core obtained by 2 and implement spiral, Continuous Drive its 1 hour under 100kHz, 200mT.So
Afterwards, magnetic core temperature is determined after 1 hour.It is good that heat generation characteristic is set in the case where the magnetic core temperature is less than 130 DEG C.
【Table 1】
【Table 2】
【Table 3】
【Table 4】
【Table 5】
From 1~table of table 5, whole composition in the embodiment 1~46 in the scope of the present invention, Tb be 90 DEG C with
On, Pcv (Tb) is 1100kW/m3Hereinafter, Bs is more than 480mT, and heat generation characteristic is also good.In addition, embodiment 2~6,12~
15th, in 22~25,32~34,42~45, Tb is more than 90 DEG C, and Pcv (Tb) is 1000kW/m3Hereinafter, Bs is more than 485mT,
Heat generation characteristic is also good.Further, whole compositions be the embodiment 3~5 in most preferred scope, 13,14,23,24,33,
43rd, in 44, Tb is more than 90 DEG C, and Pcv (Tb) is 800kW/m3Hereinafter, Bs is more than 490mT, and heat generation characteristic is also good.
In addition, in embodiment 41a, 41b, 41, making MoO3Content be reduced to below 50 weight ppm, and Tb be 90 DEG C
More than, Pcv (Tb) is 1100kW/m3Hereinafter, Bs is more than 480mT, and heat generation characteristic is also good.
On the other hand, constitute in the comparative example 1~42 outside for the scope of the present invention, Tb is less than 90 DEG C, and Pcv (Tb) exceedes
1100kW/m3, and/or Bs is less than 480mT.Further, the bad comparative example of heat generation characteristic has multiple.
Claims (3)
1. a kind of MnZnLiNi based ferrites, wherein,
Contain iron oxide, zinc oxide, lithia, nickel oxide and manganese oxide as principal component,
It is set to by the content of the iron oxide by Fe2O3It is scaled a moles of %；The content of the zinc oxide is set to change by ZnO
Calculate as b moles of %；The content of the lithia is set to by LiO0.5It is scaled c moles of %；The content of the nickel oxide is set to
D moles of % is scaled by NiO；The content of the manganese oxide is set in the case of being scaled e moles of % by MnO, met：
57.0≤a≤62.0；
3.0≤b≤11.0；
1.2≤c≤4.0；
0.2≤d≤6.0；
A+b+c+d+e=100,
Further, containing by MoO310~500 weight ppm Mo is scaled as accessory ingredient.
2. a kind of magnetic core, it is made up of the MnZnLiNi based ferrites described in claim 1.
3. a kind of transformer, it uses the magnetic core described in claim 2.
Applications Claiming Priority (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2015-187920 | 2015-09-25 | ||
| JP2015187920 | 2015-09-25 | ||
| JP2016123833A JP2017061402A (en) | 2015-09-25 | 2016-06-22 | MnZnLiNi-BASED FERRITE, MAGNETIC CORE AND TRANSFORMER |
| JP2016-123833 | 2016-06-22 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106977190A true CN106977190A (en) | 2017-07-25 |
Family
ID=58429092
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610847748.4A Pending CN106977190A (en) | 2015-09-25 | 2016-09-23 | MnZnLiNi based ferrites, magnetic core and transformer |
Country Status (2)
| Country | Link |
|---|---|
| JP (1) | JP2017061402A (en) |
| CN (1) | CN106977190A (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112028619A (en) * | 2020-09-16 | 2020-12-04 | 无锡斯贝尔磁性材料有限公司 | high-Bs low-power-consumption manganese-zinc soft magnetic ferrite material and preparation method thereof |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1662470A (en) * | 2002-09-26 | 2005-08-31 | Tdk株式会社 | Ferrite material |
| CN1692089A (en) * | 2003-01-10 | 2005-11-02 | Tdk株式会社 | Ferrite material and method of manufacturing the same |
| CN101274846A (en) * | 2007-03-30 | 2008-10-01 | Tdk株式会社 | Method of producing MnZn-base ferrite |
| CN103172358A (en) * | 2013-03-21 | 2013-06-26 | 电子科技大学 | High BsHigh TcMnZn ferrite material and preparation method thereof |
-
2016
- 2016-06-22 JP JP2016123833A patent/JP2017061402A/en active Pending
- 2016-09-23 CN CN201610847748.4A patent/CN106977190A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1662470A (en) * | 2002-09-26 | 2005-08-31 | Tdk株式会社 | Ferrite material |
| CN1692089A (en) * | 2003-01-10 | 2005-11-02 | Tdk株式会社 | Ferrite material and method of manufacturing the same |
| CN101274846A (en) * | 2007-03-30 | 2008-10-01 | Tdk株式会社 | Method of producing MnZn-base ferrite |
| CN103172358A (en) * | 2013-03-21 | 2013-06-26 | 电子科技大学 | High BsHigh TcMnZn ferrite material and preparation method thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2017061402A (en) | 2017-03-30 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JP5332254B2 (en) | Ferrite sintered body | |
| JP2005213100A (en) | METHOD OF MANUFACTURING MnZn FERRITE AND MnZn FERRITE | |
| CN106915956A (en) | MnZnLi based ferrites, magnetic core and transformer | |
| JP4129917B2 (en) | Ferrite material and manufacturing method thereof | |
| KR100627117B1 (en) | Ferrite Material | |
| KR101267302B1 (en) | Ferrite Core | |
| JP2008247675A (en) | METHOD OF MANUFACTURING MnZn-BASED FERRITE | |
| JP2007112695A (en) | METHOD FOR PRODUCING Mn FERRITE | |
| JP5699542B2 (en) | Ferrite composition, ferrite core and electronic component | |
| JP2007238339A (en) | Mn-Zn-BASED FERRITE MATERIAL | |
| JP5019023B2 (en) | Mn-Zn ferrite material | |
| JP2004161593A (en) | Ferritic material | |
| JP6314758B2 (en) | MnZn ferrite and MnZn ferrite large core | |
| CN106977190A (en) | MnZnLiNi based ferrites, magnetic core and transformer | |
| JP2007031240A (en) | METHOD FOR MANUFACTURING MnZn FERRITE AND MnZn FERRITE | |
| JP2004247370A (en) | MnZn FERRITE | |
| JP5828308B2 (en) | Ferrite core and transformer | |
| JP5510296B2 (en) | Ferrite composition, ferrite core and electronic component | |
| JP2015113247A (en) | Ferrite composition, ferrite core and electronic component | |
| JP4089970B2 (en) | Ferrite material manufacturing method | |
| JP3584437B2 (en) | Method for producing Mn-Zn ferrite | |
| JP4799808B2 (en) | Ferrite composition, magnetic core and electronic component | |
| JP2007197255A (en) | METHOD OF MANUFACTURING Mn-Zn FERRITE | |
| JP2007197253A (en) | METHOD OF MANUFACTURING Mn-Zn FERRITE | |
| JP2005029416A (en) | Ferrite material |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20170725 |
|
| WD01 | Invention patent application deemed withdrawn after publication |