CN117265398B - Iron-based nanocrystalline strip and preparation method and application thereof - Google Patents
Iron-based nanocrystalline strip and preparation method and application thereof Download PDFInfo
- Publication number
- CN117265398B CN117265398B CN202311220123.1A CN202311220123A CN117265398B CN 117265398 B CN117265398 B CN 117265398B CN 202311220123 A CN202311220123 A CN 202311220123A CN 117265398 B CN117265398 B CN 117265398B
- Authority
- CN
- China
- Prior art keywords
- iron
- strip
- based nanocrystalline
- heat treatment
- nanocrystalline strip
- 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.)
- Active
Links
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 title claims abstract description 352
- 229910052742 iron Inorganic materials 0.000 title claims abstract description 156
- 238000002360 preparation method Methods 0.000 title claims abstract description 30
- 230000005291 magnetic effect Effects 0.000 claims abstract description 140
- 238000000034 method Methods 0.000 claims abstract description 57
- 230000008569 process Effects 0.000 claims abstract description 41
- 229910052761 rare earth metal Inorganic materials 0.000 claims abstract description 18
- 239000000463 material Substances 0.000 claims abstract description 14
- 150000002910 rare earth metals Chemical class 0.000 claims abstract description 13
- 239000000126 substance Substances 0.000 claims abstract description 13
- 238000002425 crystallisation Methods 0.000 claims abstract description 11
- 230000008025 crystallization Effects 0.000 claims abstract description 11
- 229910052732 germanium Inorganic materials 0.000 claims abstract description 11
- 229910052736 halogen Inorganic materials 0.000 claims abstract description 10
- 150000002367 halogens Chemical class 0.000 claims abstract description 10
- 229910052782 aluminium Inorganic materials 0.000 claims abstract description 7
- 238000010438 heat treatment Methods 0.000 claims description 110
- 239000002243 precursor Substances 0.000 claims description 64
- 239000012790 adhesive layer Substances 0.000 claims description 33
- 238000004321 preservation Methods 0.000 claims description 19
- 239000002994 raw material Substances 0.000 claims description 18
- 238000003723 Smelting Methods 0.000 claims description 17
- 238000001816 cooling Methods 0.000 claims description 14
- 239000000155 melt Substances 0.000 claims description 14
- 230000009471 action Effects 0.000 claims description 11
- 239000012298 atmosphere Substances 0.000 claims description 11
- 238000004804 winding Methods 0.000 claims description 11
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 claims description 10
- 238000005520 cutting process Methods 0.000 claims description 10
- 239000003292 glue Substances 0.000 claims description 10
- 239000001257 hydrogen Substances 0.000 claims description 10
- 229910052739 hydrogen Inorganic materials 0.000 claims description 10
- 229910052771 Terbium Inorganic materials 0.000 claims description 9
- 239000010410 layer Substances 0.000 claims description 9
- 239000000853 adhesive Substances 0.000 claims description 8
- 230000001070 adhesive effect Effects 0.000 claims description 8
- 238000002156 mixing Methods 0.000 claims description 7
- 239000004925 Acrylic resin Substances 0.000 claims description 5
- 229910052688 Gadolinium Inorganic materials 0.000 claims description 5
- 238000010791 quenching Methods 0.000 claims description 5
- 230000000171 quenching effect Effects 0.000 claims description 5
- 238000005096 rolling process Methods 0.000 claims description 4
- 238000010030 laminating Methods 0.000 claims description 3
- 238000004519 manufacturing process Methods 0.000 claims description 2
- 238000005303 weighing Methods 0.000 claims description 2
- 239000011248 coating agent Substances 0.000 claims 1
- 238000000576 coating method Methods 0.000 claims 1
- 230000006698 induction Effects 0.000 abstract description 17
- 230000035699 permeability Effects 0.000 abstract description 6
- 239000008204 material by function Substances 0.000 abstract description 2
- 239000010949 copper Substances 0.000 description 28
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 14
- 229910052802 copper Inorganic materials 0.000 description 14
- 239000000758 substrate Substances 0.000 description 11
- 229910045601 alloy Inorganic materials 0.000 description 10
- 239000000956 alloy Substances 0.000 description 10
- 230000000052 comparative effect Effects 0.000 description 10
- 229910052710 silicon Inorganic materials 0.000 description 10
- 229910000592 Ferroniobium Inorganic materials 0.000 description 9
- ZFGFKQDDQUAJQP-UHFFFAOYSA-N iron niobium Chemical compound [Fe].[Fe].[Nb] ZFGFKQDDQUAJQP-UHFFFAOYSA-N 0.000 description 9
- 239000010703 silicon Substances 0.000 description 9
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 description 8
- 239000013078 crystal Substances 0.000 description 7
- GNPVGFCGXDBREM-UHFFFAOYSA-N germanium atom Chemical compound [Ge] GNPVGFCGXDBREM-UHFFFAOYSA-N 0.000 description 6
- GZCRRIHWUXGPOV-UHFFFAOYSA-N terbium atom Chemical compound [Tb] GZCRRIHWUXGPOV-UHFFFAOYSA-N 0.000 description 6
- 230000005672 electromagnetic field Effects 0.000 description 5
- 230000002889 sympathetic effect Effects 0.000 description 5
- 229910052786 argon Inorganic materials 0.000 description 4
- 229910052751 metal Inorganic materials 0.000 description 4
- 239000010453 quartz Substances 0.000 description 4
- 229920006395 saturated elastomer Polymers 0.000 description 4
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N silicon dioxide Inorganic materials O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 4
- 239000004020 conductor Substances 0.000 description 3
- 239000007789 gas Substances 0.000 description 3
- 239000002184 metal Substances 0.000 description 3
- 238000010899 nucleation Methods 0.000 description 3
- 230000006911 nucleation Effects 0.000 description 3
- GFISHBQNVWAVFU-UHFFFAOYSA-K terbium(iii) chloride Chemical compound Cl[Tb](Cl)Cl GFISHBQNVWAVFU-UHFFFAOYSA-K 0.000 description 3
- 229910000859 α-Fe Inorganic materials 0.000 description 3
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 239000003153 chemical reaction reagent Substances 0.000 description 2
- 238000002474 experimental method Methods 0.000 description 2
- UIWYJDYFSGRHKR-UHFFFAOYSA-N gadolinium atom Chemical compound [Gd] UIWYJDYFSGRHKR-UHFFFAOYSA-N 0.000 description 2
- 239000011261 inert gas Substances 0.000 description 2
- 230000005381 magnetic domain Effects 0.000 description 2
- 230000005389 magnetism Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 239000002159 nanocrystal Substances 0.000 description 2
- 239000012299 nitrogen atmosphere Substances 0.000 description 2
- 230000003647 oxidation Effects 0.000 description 2
- 238000007254 oxidation reaction Methods 0.000 description 2
- 239000000843 powder Substances 0.000 description 2
- 238000001556 precipitation Methods 0.000 description 2
- 239000000047 product Substances 0.000 description 2
- AZNZWHYYEIQIOC-UHFFFAOYSA-K terbium(iii) bromide Chemical compound [Br-].[Br-].[Br-].[Tb+3] AZNZWHYYEIQIOC-UHFFFAOYSA-K 0.000 description 2
- TYIZUJNEZNBXRS-UHFFFAOYSA-K trifluorogadolinium Chemical compound F[Gd](F)F TYIZUJNEZNBXRS-UHFFFAOYSA-K 0.000 description 2
- 229910021578 Iron(III) chloride Inorganic materials 0.000 description 1
- 208000012868 Overgrowth Diseases 0.000 description 1
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 1
- 229910000808 amorphous metal alloy Inorganic materials 0.000 description 1
- 238000000137 annealing Methods 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 238000009792 diffusion process Methods 0.000 description 1
- 230000002500 effect on skin Effects 0.000 description 1
- 230000005674 electromagnetic induction Effects 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 230000005294 ferromagnetic effect Effects 0.000 description 1
- 230000004907 flux Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- RBTARNINKXHZNM-UHFFFAOYSA-K iron trichloride Chemical compound Cl[Fe](Cl)Cl RBTARNINKXHZNM-UHFFFAOYSA-K 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 238000003475 lamination Methods 0.000 description 1
- 230000005285 magnetism related processes and functions Effects 0.000 description 1
- 239000011159 matrix material Substances 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 239000012466 permeate Substances 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 229910052717 sulfur Inorganic materials 0.000 description 1
- 239000011593 sulfur Substances 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F1/00—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties
- H01F1/01—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials
- H01F1/03—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity
- H01F1/12—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity of soft-magnetic materials
- H01F1/14—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity of soft-magnetic materials metals or alloys
- H01F1/147—Alloys characterised by their composition
- H01F1/14766—Fe-Si based alloys
- H01F1/14775—Fe-Si based alloys in the form of sheets
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D11/00—Continuous casting of metals, i.e. casting in indefinite lengths
- B22D11/001—Continuous casting of metals, i.e. casting in indefinite lengths of specific alloys
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D11/00—Continuous casting of metals, i.e. casting in indefinite lengths
- B22D11/06—Continuous casting of metals, i.e. casting in indefinite lengths into moulds with travelling walls, e.g. with rolls, plates, belts, caterpillars
- B22D11/0611—Continuous casting of metals, i.e. casting in indefinite lengths into moulds with travelling walls, e.g. with rolls, plates, belts, caterpillars formed by a single casting wheel, e.g. for casting amorphous metal strips or wires
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D1/00—General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering
- C21D1/04—General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering with simultaneous application of supersonic waves, magnetic or electric fields
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D1/00—General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering
- C21D1/74—Methods of treatment in inert gas, controlled atmosphere, vacuum or pulverulent material
- C21D1/773—Methods of treatment in inert gas, controlled atmosphere, vacuum or pulverulent material under reduced pressure or vacuum
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D6/00—Heat treatment of ferrous alloys
- C21D6/008—Heat treatment of ferrous alloys containing Si
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D9/00—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor
- C21D9/0068—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for particular articles not mentioned below
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/002—Ferrous alloys, e.g. steel alloys containing In, Mg, or other elements not provided for in one single group C22C38/001 - C22C38/60
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/005—Ferrous alloys, e.g. steel alloys containing rare earths, i.e. Sc, Y, Lanthanides
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/02—Ferrous alloys, e.g. steel alloys containing silicon
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/06—Ferrous alloys, e.g. steel alloys containing aluminium
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/12—Ferrous alloys, e.g. steel alloys containing tungsten, tantalum, molybdenum, vanadium, or niobium
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/16—Ferrous alloys, e.g. steel alloys containing copper
-
- 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
- H01F27/25—Magnetic cores made from strips or ribbons
-
- 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
- H01F27/34—Special means for preventing or reducing unwanted electric or magnetic effects, e.g. no-load losses, reactive currents, harmonics, oscillations, leakage fields
-
- 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
- H01F27/34—Special means for preventing or reducing unwanted electric or magnetic effects, e.g. no-load losses, reactive currents, harmonics, oscillations, leakage fields
- H01F27/36—Electric or magnetic shields or screens
-
- 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
- H01F27/34—Special means for preventing or reducing unwanted electric or magnetic effects, e.g. no-load losses, reactive currents, harmonics, oscillations, leakage fields
- H01F27/36—Electric or magnetic shields or screens
- H01F27/366—Electric or magnetic shields or screens made of ferromagnetic material
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F38/00—Adaptations of transformers or inductances for specific applications or functions
- H01F38/14—Inductive couplings
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F41/00—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties
- H01F41/02—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties for manufacturing cores, coils, or magnets
- H01F41/0206—Manufacturing of magnetic cores by mechanical means
- H01F41/0213—Manufacturing of magnetic circuits made from strip(s) or ribbon(s)
-
- 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
- H01F27/34—Special means for preventing or reducing unwanted electric or magnetic effects, e.g. no-load losses, reactive currents, harmonics, oscillations, leakage fields
- H01F2027/348—Preventing eddy currents
Abstract
The invention relates to the field of magnetic functional materials, in particular to an iron-based nanocrystalline strip, a preparation method and application thereof. The invention provides an iron-based nanocrystalline strip, wherein the chemical formula of the iron-based nanocrystalline strip material is Fe a Si b B c Nb d Cu e E f T g M h The method comprises the steps of carrying out a first treatment on the surface of the Wherein E is at least one selected from halogen elements; t is selected from at least one of Ge and Al; m is selected from at least one of rare earth metals; a. b, c, d, e, f, g, h the atomic percentages of the corresponding elements are a+b+c+d+e+f+g+h=100deg.at%, 76at% not more than a not more than 82at%, 3at% not more than b not more than 7at%, 9at% not more than c not more than 12at%, 1at% not more than d not more than 3at%, 0.5at% not more than e not more than 1.5at%, 0.5at% not more than f not more than 1.5at%, 0.5at% not more than g not more than 2.5at%, 0.5at% not more than h not more than 2.5at%. By selecting KeteThe amorphous forming capability of the material can be improved, the subsequent crystallization process can be controlled, and the grain-refined nanocrystalline strip can be obtained, so that the material can prepare a thinner and wider iron-based nanocrystalline strip, and the prepared iron-based nanocrystalline strip has high saturation magnetic induction intensity, low electromagnetic loss and high magnetic permeability.
Description
Technical Field
The invention relates to the field of magnetic functional materials, in particular to an iron-based nanocrystalline strip, a preparation method and application thereof.
Background
The wireless charger is characterized in that a 220V/380V power supply is changed into a sympathetic electromagnetic field at a transmitting end, the sympathetic electromagnetic field at a receiving end of the transmitting end also generates a sympathetic electromagnetic field, the sympathetic electromagnetic field is changed into a receiving end current for charging, the sympathetic electromagnetic field encounters metal and generates electronic vortex, the electronic vortex generates skin effect on the metal, heat energy is generated on the metal, charging efficiency is reduced, and electric energy is wasted. Therefore, in order to improve the charging efficiency and ensure the use safety, the main scheme is to add magnetic conductive sheets, also called magnetic isolation sheets, on the back of the coil at the transmitting end and the receiving end of the wireless charger, so that the excellent magnetic conductivity can be utilized to increase the magnetic flux of the coil, reduce the loss of the copper coil, enable the magnetic induction wire to tightly surround the periphery taking the magnetic conductive sheets as the center to increase the electromagnetic induction intensity, and improve the electromagnetic conversion efficiency.
At present, the main material of the magnetic conduction sheet is ferrite, which occupies the main market of wireless charging by virtue of high-frequency magnetic conductivity, lower loss and low cost, but the saturation magnetic induction intensity, the magnetic loss and the magnetic conductivity of the existing iron-based nanocrystalline strip are poor.
Disclosure of Invention
Therefore, the technical problem to be solved by the invention is to overcome the defects of poor saturation magnetic induction intensity, magnetic loss and magnetic conductivity of the iron-based nanocrystalline strip in the prior art, thereby providing the iron-based nanocrystalline strip and the preparation method and application thereof.
The invention provides an iron-based nanocrystalline strip, wherein the chemical formula of the iron-based nanocrystalline strip material is Fe a Si b B c Nb d Cu e E f T g M h ；
Wherein E is at least one selected from halogen elements; t is selected from at least one of Ge and Al; m is selected from at least one of rare earth metals;
a. b, c, d, e, f, g, h the atomic percentages of the corresponding elements are a+b+c+d+e+f+g+h=100deg.at%, 76at% not more than a not more than 82at%, 3at% not more than b not more than 7at%, 9at% not more than c not more than 12at%, 1at% not more than d not more than 3at%, 0.5at% not more than e not more than 1.5at%, 0.5at% not more than f not more than 1.5at%, 0.5at% not more than g not more than 2.5at%, 0.5at% not more than h not more than 2.5at%.
Preferably, E is selected from at least one of F, cl or Br; and/or the number of the groups of groups,
and M is at least one selected from Tb and Gd.
Preferably, the thickness of the strip is 12-16 mu m, the width of the strip is 150-250 mm, and the thickness deviation in the width direction of the strip is less than 0.001mm.
The invention provides a preparation method of the iron-based nanocrystalline strip, which comprises the following steps: weighing raw materials according to a stoichiometric ratio, mixing and smelting the raw materials, forming an amorphous precursor strip from a melt obtained by smelting, and performing heat treatment on the formed amorphous precursor strip to obtain the iron-based nanocrystalline strip.
Optionally, the raw materials are selected from: industrial pure iron, pure silicon, ferroboron, ferroniobium, pure copper, terbium chloride, pure germanium, rare earth terbium;
optionally, the raw materials are selected from: industrial pure iron, pure silicon, ferroboron, ferroniobium, pure copper, gadolinium fluoride, pure aluminum, rare earth gadolinium;
optionally, the raw materials are selected from: industrial pure iron, pure silicon, ferroboron, ferroniobium, pure copper, terbium bromide, pure germanium, rare earth terbium.
Optionally, the heat treatment is performed in a heat treatment furnace.
Preferably, the amorphous precursor strip forming process is to form an amorphous precursor strip from a melt obtained by smelting by a single-roller rapid quenching method;
wherein in the single roll rapid quenching method, the cooling rate of the melt is 10 5 ～10 7 ℃/s；
The thickness of the formed amorphous precursor strip is 12-16 mu m, and the width of the strip is 150-250 mm; and/or the number of the groups of groups,
before performing heat treatment on the formed amorphous precursor strip, the method further comprises the step of winding the amorphous precursor strip to form an iron core; and/or the number of the groups of groups,
the heat treatment process is performed under a hydrogen atmosphere.
Optionally, the outer diameter of the iron core formed by winding is 100mm, and the inner diameter of the iron core formed by winding is 75mm.
Optionally, the winding process is performed by a semi-automatic winder.
Optionally, the amorphous precursor strip is formed by a single-roller rapid quenching method by using inert gas to pressurize and spray the melt obtained by smelting from a quartz nozzle onto a copper roller rotating at a high speed;
optionally, the inert gas comprises argon;
preferably, the heat treatment process is to perform stress heat treatment on the amorphous precursor strip and then crystallization treatment;
the stress heat treatment process is realized through an n-step ladder heat treatment process, wherein n is an integer greater than or equal to 2 and less than or equal to 20, the temperature of the 1 st heat treatment is 250-300 ℃, and the temperature of the n-step heat treatment is 450-500 ℃; the heat preservation time of each step of heat treatment is 5-15min, and the heating rate is 1-50 ℃/min; and/or the number of the groups of groups,
the crystallization treatment comprises a heating process and a heat preservation process, wherein the heat preservation process is carried out under the action of a transverse magnetic field, and the direction of the transverse magnetic field is perpendicular to the longitudinal section of the amorphous precursor strip; the strength of the transverse magnetic field is 40-60 mT; and/or the number of the groups of groups,
the heating rate of the heating process is 1-50 ℃/min;
the temperature of the heat preservation process is 550-580 ℃ and the time is 10-30 min.
Optionally, the crystallization treatment further comprises a cooling process, wherein the cooling process is to naturally cool the strip material subjected to the heat preservation process along with a heat treatment furnace;
optionally, the cooling process is performed under the action of a transverse magnetic field, and the direction of the transverse magnetic field is perpendicular to the longitudinal section of the amorphous precursor strip; the strength of the transverse magnetic field is 40-60 mT.
Alternatively, n in the n-step-heating heat treatment may be 2, 3 or 4.
Optionally, when n is 2, the stress heat treatment process is to heat the amorphous precursor strip to 250-300 ℃ at a heating rate of 1-50 ℃/min, preserving heat for 5-15min, and then heating to 450-500 ℃ at a speed of 1-50 ℃/min, preserving heat for 5-15min.
Optionally, when n is 3, the stress heat treatment process is to heat the amorphous precursor strip to 250-300 ℃ at a heating rate of 1-50 ℃/min, heat preserving for 5-15min, then heating to 360-400 ℃ at a speed of 1-50 ℃/min, heat preserving for 5-15min, and then heating to 450-500 ℃ at a speed of 1-50 ℃/min, and heat preserving for 5-15min.
Optionally, when n is 4, the stress heat treatment process is to heat the amorphous precursor strip to 250-300 ℃ at a heating rate of 1-50 ℃/min, keep the temperature for 5-15min, then heat the amorphous precursor strip to 320-350 ℃ at a speed of 1-50 ℃/min, keep the temperature for 5-15min, then heat the amorphous precursor strip to 400-420 ℃ at a speed of 1-50 ℃/min, keep the temperature for 5-15min, and then heat the amorphous precursor strip to 450-500 ℃ at a speed of 1-50 ℃/min, and keep the temperature for 5-15min.
The invention also provides a magnetizer, which comprises the iron-based nanocrystalline strip or the iron-based nanocrystalline strip prepared by the preparation method.
The invention also provides a preparation method of the magnetizer, which comprises the following steps:
1) Forming a glue layer on one side surface of the iron-based nanocrystalline strip prepared by the preparation method to obtain a single-sided glue-coated iron-based nanocrystalline strip, wherein the iron-based nanocrystalline strip is the iron-based nanocrystalline strip or the iron-based nanocrystalline strip prepared by the preparation method;
2) Carrying out roller crushing and magnetic crushing on the iron-based nanocrystalline strip coated with the adhesive on one side to obtain a crushed iron-based nanocrystalline strip;
3) Attaching, cutting and laminating the crushed iron-based nanocrystalline strips to obtain a magnetic conduction precursor;
4) And performing magnetic field heat treatment on the magnetic conduction precursor to obtain the magnetizer.
Optionally, step 3) is to cut the crushed iron-based nanocrystalline strip along the direction perpendicular to the glue layer to form a plurality of substrates with the same shape, and attach to form N stacked iron-based nanocrystalline strip blocks, where the stacked iron-based nanocrystalline strip blocks are formed by sequentially attaching a plurality of substrates along the direction perpendicular to the glue layer through the glue layer, and N is an integer greater than or equal to 1; cutting the stacked iron-based nanocrystalline strip blocks along the direction perpendicular to the adhesive layer to form a plurality of sub iron-based nanocrystalline strip blocks, and sequentially stacking the plurality of sub iron-based nanocrystalline strip blocks along the direction perpendicular to the adhesive layer through the adhesive layer to obtain the magnetic conduction precursor.
Optionally, in step 3), the number of the plurality of identically shaped substrates is 10-100.
Optionally, in the step 3), the iron-based nanocrystalline strip block is laminated by sequentially adhering a plurality of substrates through the adhesive layer along the direction perpendicular to the adhesive layer, wherein the number of the substrates in the lamination is 2-10.
Optionally, the number of the iron-based nanocrystalline strip blocks forming the plurality of iron-based nanocrystalline strip blocks in step 3) is 3-10.
Optionally, the section of the glue layer surface of the sub-iron-based nanocrystalline strip block is rectangular with the length of 100-1000mm and the width of 1-20 mm.
In the invention, the sub-iron-based nanocrystalline strip blocks are cuboid, the length is 100-1000mm, the width is 1-20mm, and the thickness is the thickness after the sub-iron-based nanocrystalline strip blocks are sequentially stuck and overlapped through the adhesive layer in the step 3) along the direction perpendicular to the adhesive layer.
Optionally, in the step 2), in the process of roll crushing and magnetic crushing of the single-sided adhesive coated iron-based nanocrystalline strip, a release film is attached to the surface of the single-sided adhesive coated iron-based nanocrystalline strip for protection.
Optionally, the rolling crushing magnetism in the step 2) is performed by a crushing magnetism roller with triangular or regular hexagonal other polygonal grains.
Optionally, the side length of the regular hexagon is 1-10mm.
Preferably, the thickness of the adhesive layer in the step 1) is 4-8 mu m; and/or the number of the groups of groups,
the adhesive layer is made of polyacrylic resin; and/or the number of the groups of groups,
preferably, the rolling pressure is 25-400kg/m 2 。
Preferably, the magnetic field direction in the magnetic field heat treatment is parallel to the width direction of the iron-based nanocrystalline strip for preparing the magnetizer, wherein the magnetic field strength is 40-60 mT; the heat treatment temperature is 50-150deg.C, and the time is 5-30min.
In the invention, the magnetic conduction direction of the magnetizer is the width direction of the sub-iron-based nanocrystalline strip block.
The technical scheme of the invention has the following advantages:
1. the chemical formula of the iron-based nanocrystalline strip material provided by the invention is Fe a Si b B c Nb d Cu e E f T g M h The method comprises the steps of carrying out a first treatment on the surface of the Wherein E is at least one selected from halogen elements; t is selected from at least one of Ge and Al; m is selected from at least one of rare earth metals; a. b, c, d, e, f, g, h the atomic percentages of the corresponding elements are a+b+c+d+e+f+g+h=100deg.at%, 76at% not more than a not more than 82at%, 3at% not more than b not more than 7at%, 9at% not more than c not more than 12at%, 1at% not more than d not more than 3at%, 0.5at% not more than e not more than 1.5at%, 0.5at% not more than f not more than 1.5at%, 0.5at% not more than g not more than 2.5at%, 0.5at% not more than.5at％≤h≤2.5at％。
The iron-based nanocrystalline strip provided by the invention adopts specific components and limits the content of each component, wherein Fe element in the iron-based nanocrystalline strip is used as a ferromagnetic element to play a role in maintaining saturated magnetic induction intensity, and proper proportion of Si and B metal elements is key for obtaining an amorphous precursor; nb element can effectively prevent nanocrystalline grain growth and reduce diffusion coefficient; the Cu element is used as a nucleation element, which is favorable for precipitation and refinement of nano-crystalline grains; the halogen element can improve the uniformity of the solution in the smelting process, promote the heterogeneous nucleation of nano crystal grains in the heat treatment process and refine the crystal grains; the halogen element is added in a matching way, so that the width direction thickness deviation of the finally prepared iron-based nanocrystalline strip is reduced, the surface is smooth, a thinner and wider iron-based nanocrystalline strip can be prepared, the saturation induction intensity of the finally prepared iron core can be improved, the electromagnetic loss of the iron core is reduced, but the addition of excessive halogen element can reduce the amorphous forming capacity of the material in the preparation process, so that the performance of the finally prepared strip is reduced; ge. The addition of Al and rare earth elements can improve the amorphous forming capacity and the thermal stability of the bulk amorphous alloy, so that the finally prepared thinner and wider iron-based nanocrystalline strip can be realized; in summary, by selecting the specifiable components and limiting the content of each component, the amorphous forming capability of the material can be improved, and the nanocrystalline band with refined crystal grains can be obtained in the follow-up crystallization process, so that the material can prepare a thinner and wider iron-based nanocrystalline band, and the prepared iron-based nanocrystalline band has high saturation magnetic induction intensity, low electromagnetic loss and high magnetic conductivity.
2. Further, compared with other rare earth elements, the rare earth metal provided by the invention is easier to react with impurity elements such as sulfur, oxygen and the like in the alloy to the surface of the solution in the smelting process, and meanwhile, a layer of compact oxide film can be formed on the surface of the alloy, so that the master alloy is purer, in addition, the amorphous forming capacity and the thermal stability of the alloy can be further improved by Tb and Gd, the preparation of thinner and wider iron-based nanocrystalline strips is facilitated, and meanwhile, the rare earth element with larger size is beneficial to the precipitation and refinement of alpha-Fe crystal grains, and the saturated magnetic induction intensity, the electromagnetic loss and the magnetic permeability of the finally obtained iron-based nanocrystalline strip are improved.
3. The preparation method of the iron-based nanocrystalline strip provided by the invention comprises the following steps: according to the chemical formula Fe of the material of the iron-based nanocrystalline strip a Si b B c Nb d Cu e E f T g M h Preparing raw materials, mixing and smelting the raw materials, forming an amorphous precursor strip from a melt obtained by smelting, and performing heat treatment on the formed amorphous precursor strip to obtain the iron-based nanocrystalline strip.
According to Fe a Si b B c Nb d Cu e E f T g M h Preparing raw materials, mixing and smelting the raw materials, forming an amorphous precursor strip from a melt obtained by smelting, and performing heat treatment on the formed amorphous precursor strip in a hydrogen atmosphere to obtain Fe a Si b B c Nb d Cu e E f T g M h The halogen element is added, so that the uniformity of the solution can be improved in the smelting process, the heterogeneous nucleation of nano crystal grains can be promoted in the heat treatment process, and the crystal grains are refined; the addition of the halogen element can reduce the thickness deviation in the width direction of the finally prepared iron-based nanocrystalline strip, has smooth surface, can prepare thinner and wider iron-based nanocrystalline strip, and can also improve the saturation induction intensity of the finally prepared iron core and reduce the electromagnetic loss of the iron core; the specific raw materials are mixed and smelted to form an amorphous precursor strip, and then the amorphous precursor strip is subjected to heat treatment, so that the saturation magnetic induction intensity of the iron-based nanocrystalline strip can be improved, the electromagnetic loss of the iron-based nanocrystalline strip can be reduced, and the magnetic conductivity of the iron-based nanocrystalline strip can be improved.
4. Further, the preparation method of the iron-based nanocrystalline strip provided by the invention is characterized in that the heat treatment process is carried out in a hydrogen atmosphere.
The heat treatment is carried out in the hydrogen atmosphere, and the oxidation layer on the surface of the strip can be removed by the heat treatment in the hydrogen atmosphere, so that the oxidation of the strip is effectively prevented, the toughness of the strip is improved, the saturation magnetic induction intensity of the iron-based nanocrystalline strip is improved, the electromagnetic loss of the iron-based nanocrystalline strip is reduced, and the magnetic conductivity is improved.
5. Further, the heat treatment process in the preparation method of the iron-based nanocrystalline strip provided by the invention is that amorphous precursor strip is subjected to stress heat treatment and then crystallization treatment is carried out; the stress heat treatment process is realized through an n-step ladder heat treatment process, wherein n is an integer greater than or equal to 2 and less than or equal to 20, the temperature of the 1 st heat treatment is 250-300 ℃, and the temperature of the n-step heat treatment is 450-500 ℃; the heat preservation time of each step of heat treatment is 5-15min, and the heating rate is 1-50 ℃/min; the crystallization treatment comprises a heating process and a heat preservation process, wherein the heat preservation process is carried out under the action of a transverse magnetic field, and the direction of the transverse magnetic field is perpendicular to the longitudinal section of the amorphous precursor strip; the strength of the transverse magnetic field is 40-60 mT.
The n-step ladder heat-up heat treatment is adopted, so that the property deterioration of the iron-based nanocrystalline strip caused by the heat-up can be prevented, after the stress heat treatment is finished, the amorphous precursor strip is free from residual stress, crystal grains are more finely and uniformly separated out in the subsequent crystallization treatment process, the property of the final iron-based nanocrystalline strip is more stable, and a colleague moves the magnetic domain wall of the iron-based nanocrystalline strip under the action of a transverse magnetic field in the crystallization treatment stage, so that the magnetic domain structure is improved, and the magnetic conductivity of the material is improved.
6. The preparation method of the magnetizer provided by the invention comprises the following steps: 1) Forming a glue layer on one side surface of the iron-based nanocrystalline strip to obtain a single-sided glue-coated iron-based nanocrystalline strip, wherein the iron-based nanocrystalline strip is the iron-based nanocrystalline strip or the iron-based nanocrystalline strip prepared by the preparation method; 2) Carrying out roller crushing and magnetic crushing on the iron-based nanocrystalline strip coated with the adhesive on one side to obtain a crushed iron-based nanocrystalline strip; 3) Attaching, cutting and laminating the crushed iron-based nanocrystalline strips to obtain a magnetic conduction precursor; 4) And performing magnetic field heat treatment on the magnetic conduction precursor to obtain the magnetizer.
The adhesive layer can prevent the strips from being broken in the rolling and crushing magnetic process, and can permeate into the crushing magnetic gaps in the subsequent magnetic field heat treatment process to improve the insulativity between the crushing magnetic gaps, so that the magnetic conductivity of the magnetizer is improved, the iron-based nanocrystalline strips after the crushing magnetic are attached, cut and laminated to obtain a magnetic conductive precursor, and the magnetic conductive precursor is subjected to the magnetic field heat treatment to obtain the magnetizer which is different from the simple iron-based nanocrystalline strips in the prior art in superposition, and the magnetizer has higher saturated magnetic induction intensity, lower electromagnetic loss and magnetic conductivity improvement.
7. Furthermore, in the preparation method of the magnetizer, the magnetic field direction in the magnetic field heat treatment is parallel to the width direction of the iron-based nanocrystalline strip for preparing the magnetizer, and the magnetizer can be treated under the condition so as to improve the magnetic conductivity of the magnetizer.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings that are needed in the description of the embodiments or the prior art will be briefly described, and it is obvious that the drawings in the description below are some embodiments of the present invention, and other drawings can be obtained according to the drawings without inventive effort for a person skilled in the art.
Fig. 1 is a schematic view of the structure of a strip according to the present invention, wherein OX, OY, OZ are coordinate axes perpendicular to each other, OY is a longitudinal direction parallel to the strip, OZ is a thickness direction parallel to the strip, OX is a width direction parallel to the strip, and a longitudinal section of the strip is a section parallel to the OYZ plane.
Detailed Description
The following examples are provided for a better understanding of the present invention and are not limited to the preferred embodiments described herein, but are not intended to limit the scope of the invention, any product which is the same or similar to the present invention, whether in light of the present teachings or in combination with other prior art features, falls within the scope of the present invention.
The specific experimental procedures or conditions are not noted in the examples and may be followed by the operations or conditions of conventional experimental procedures described in the literature in this field. The reagents or apparatus used were conventional reagent products commercially available without the manufacturer's knowledge.
Example 1
The embodiment provides an iron-based nanocrystalline strip, which has a chemical formula:
Fe 78.5 Si 5 B 10 Nb 1 Cu 1 Cl 1 Ge 1.5 Tb 2 . It will be appreciated that 78.5 is taken as an example and represents 78.5at% of Fe.
The preparation method of the iron-based nanocrystalline strip comprises the following steps:
1) Proportioning and mixing industrial pure iron, pure silicon, ferroboron alloy, ferroniobium alloy, pure copper, terbium chloride, pure germanium and rare earth terbium according to the chemical formula, and then placing the mixed raw materials into a vacuum induction furnace for smelting under the action of electromagnetic force to obtain a melt with uniform components; the melt was sprayed uniformly from a quartz nozzle onto a copper roller rotating at high speed using pressurized argon gas at 10 f 6 ～10 7 Cooling at a cooling rate of DEG C/s to form an amorphous precursor strip having a thickness of 12 [ mu ] m (a strip width direction thickness deviation of less than 0.001 mm) and a width of 150mm, the strip having a structure according to FIG. 1, wherein OY, OY and OZ are mutually perpendicular coordinate axes, OY being a length direction parallel to the strip, OZ being a thickness direction parallel to the strip, OX being a width direction parallel to the strip, and a longitudinal section of the strip being a section parallel to an OYZ plane;
2) Winding the amorphous precursor strip obtained in the step 1) into an iron core with the outer diameter of 100mm and the inner diameter of 75mm through a semi-automatic winding machine, placing the iron core into a heat treatment furnace with hydrogen atmosphere, heating to 300 ℃ at the heating rate of 50 ℃/min, preserving heat for 10min, heating to 450 ℃ at the heating rate of 10 ℃/min, preserving heat for 10min, heating to 560 ℃ at the heating rate of 5 ℃/min, preserving heat for 30min, applying a transverse magnetic field with the magnetic field size of 55mT to the iron core when the heat preservation starts, naturally cooling the iron core to 150 ℃ along with the heat treatment furnace after the heat preservation is finished, closing the magnetic field, and taking out the iron core to obtain the iron-based nanocrystalline strip.
The embodiment provides a method for preparing a magnetizer, which comprises the following steps:
1) Unreeling the iron core, and forming a polyacrylic resin adhesive layer with the thickness of 6 mu m on one side surface of the unreeled iron-based nanocrystalline strip to obtain an iron-based nanocrystalline strip with one side coated with adhesive;
2) The two side surfaces of the obtained single-sided glued iron-based nanocrystalline strip pass through two regular hexagon magnetic crushing rollers with side length of 5mm under the protection of a release film, and the magnetic crushing rollers are 150kg/m 2 Carrying out magnetic crushing under the pressure of the powder to obtain the iron-based nanocrystalline strip after magnetic crushing;
3) Cutting the crushed iron-based nanocrystalline strips along the direction perpendicular to the adhesive layer to form 250 substrates with the width of 15mm and the length of 150mm (the length is the length of the crushed iron-based nanocrystalline strips in the width direction), respectively pasting and superposing 5 substrates along the direction perpendicular to the adhesive layer sequentially through the adhesive layer to form 50 superposed iron-based nanocrystalline strip blocks (the superposed iron-based nanocrystalline strip blocks have the width of 15mm, the length of 150mm and the thickness of 90 mu m),
4) Cutting each superimposed iron-based nanocrystalline strip block along the direction perpendicular to the adhesive layer to form sub iron-based nanocrystalline strip blocks with the length of 10mm, the length of 100mm and the thickness of 90 mu m, and sequentially pasting and superimposing the sub iron-based nanocrystalline strip blocks along the direction perpendicular to the adhesive layer through the adhesive layer to obtain a magnetic conduction precursor (the size of the magnetic conduction precursor is 100mm x 4.5mm x 10 mm);
5) And (3) placing the magnetic conduction precursor in a vacuum magnetic field heat treatment furnace, and performing heat treatment at 80 ℃ for 10min under the action of a magnetic field to obtain the magnetic conductor, wherein the direction of the magnetic field is parallel to the width direction of the sub-iron-based nanocrystalline strip block in the magnetic conduction precursor, and the magnetic field strength is 50mT.
Example 2
The embodiment provides an iron-based nanocrystalline strip, which has a chemical formula:
Fe 80.5 Si 4 B 10 Nb 1.5 Cu 1 F 1 Al 1 Gd 1 。
the preparation method of the iron-based nanocrystalline strip comprises the following steps:
1) Proportioning and mixing industrial pure iron, pure silicon, ferroboron alloy, ferroniobium alloy, pure copper, gadolinium fluoride, pure aluminum and rare earth gadolinium according to the chemical formula, and then placing the mixed raw materials into a vacuum induction furnace for smelting under the action of electromagnetic force to obtain a melt with uniform components; the melt was sprayed uniformly from a quartz nozzle onto a copper roller rotating at high speed using pressurized argon gas at 10 f 6 ～10 7 Cooling at a cooling rate of DEG C/s to form an amorphous precursor strip having a thickness of 12 [ mu ] m (a strip width direction thickness deviation of less than 0.001 mm) and a width of 150mm, the strip having a structure according to FIG. 1, wherein OY, OY and OZ are mutually perpendicular coordinate axes, OY being a length direction parallel to the strip, OZ being a thickness direction parallel to the strip, OX being a width direction parallel to the strip, and a longitudinal section of the strip being a section parallel to an OYZ plane;
2) Winding the amorphous precursor strip obtained in the step 1) into an iron core with the outer diameter of 100mm and the inner diameter of 75mm through a semi-automatic winding machine, placing the iron core into a heat treatment furnace with hydrogen atmosphere, heating to 280 ℃ at the heating rate of 50 ℃/min, preserving heat for 10min, heating to 360 ℃ at the heating rate of 20 ℃/min, preserving heat for 10min, heating to 450 ℃ at the heating rate of 10 ℃/min, preserving heat for 10min, heating to 560 ℃ at the heating rate of 5 ℃/min, preserving heat for 30min, applying a transverse magnetic field with the magnetic field of 55mT to the iron core when the heat preservation starts, naturally cooling the iron core to 150 ℃ along with the heat treatment furnace along the width direction of the strip after the heat preservation is finished, closing the magnetic field, and taking out the iron core to obtain the iron-based nanocrystalline strip.
The embodiment provides a method for preparing a magnetizer, which comprises the following steps:
1) Unreeling the iron core, and forming a polyacrylic resin adhesive layer with the thickness of 6 mu m on one side surface of the unreeled iron-based nanocrystalline strip to obtain an iron-based nanocrystalline strip with one side coated with adhesive;
2) The two side surfaces of the obtained single-sided glued iron-based nanocrystalline strip pass through two regular hexagon magnetic crushing rollers with side length of 5mm under the protection of a release film, and the magnetic crushing rollers are 200kg/m 2 Is crushed under the pressure of (2)Obtaining the iron-based nanocrystalline strip after the magnetic crushing;
3) Cutting the crushed iron-based nanocrystalline strips along the direction perpendicular to the adhesive layer to form 300 substrates with the width of 15mm and the length of 150mm (the length is the length of the crushed iron-based nanocrystalline strips in the width direction), respectively pasting and superposing 5 substrates along the direction perpendicular to the adhesive layer sequentially through the adhesive layer to form 60 superposed iron-based nanocrystalline strip blocks (the superposed iron-based nanocrystalline strip blocks have the width of 15mm, the length of 150mm and the thickness of 90 mu m),
4) Cutting each superimposed iron-based nanocrystalline strip block along the direction perpendicular to the adhesive layer to form sub iron-based nanocrystalline strip blocks with the length of 10mm, the length of 100mm and the thickness of 90 mu m, and sequentially pasting and superimposing the sub iron-based nanocrystalline strip blocks along the direction perpendicular to the adhesive layer through the adhesive layer to obtain a magnetic conduction precursor (the size of the magnetic conduction precursor is 100mm x 5.4mm x 10 mm);
5) And (3) placing the magnetic conduction precursor in a vacuum magnetic field heat treatment furnace, and performing heat treatment at 80 ℃ for 10min under the action of a magnetic field to obtain the magnetic conductor, wherein the direction of the magnetic field is parallel to the width direction of the sub-iron-based nanocrystalline strip block in the magnetic conduction precursor, and the magnetic field strength is 50mT.
Example 3
The embodiment provides an iron-based nanocrystalline strip, which has a chemical formula:
Fe 80 Si 3 B 10 Nb 1 Cu 1 Br 1 Ge 1.5 Tb 1.5 。
the preparation method of the iron-based nanocrystalline strip comprises the following steps:
1) Proportioning and mixing industrial pure iron, pure silicon, ferroboron alloy, ferroniobium alloy, pure copper, terbium bromide, pure germanium and rare earth terbium according to the chemical formula, and then placing the mixed raw materials into a vacuum induction furnace for smelting under the action of electromagnetic force to obtain a melt with uniform components; the melt was sprayed uniformly from a quartz nozzle onto a copper roller rotating at high speed using pressurized argon gas at 10 f 6 ～10 7 Cooling at a cooling rate of DEG C/s to form an amorphous precursor strip having a thickness of 12 [ mu ] m (a strip width direction thickness deviation of less than 0.001 mm) and a width of 150mm, the strip having a structure according to FIG. 1, wherein OY, OY and OZ are mutually perpendicular coordinate axes, OY being a length direction parallel to the strip, OZ being a thickness direction parallel to the strip, OX being a width direction parallel to the strip, and a longitudinal section of the strip being a section parallel to an OYZ plane;
2) Winding the amorphous precursor strip obtained in the step 1) into an iron core with the outer diameter of 100mm and the inner diameter of 75mm through a semi-automatic winding machine, placing the iron core into a heat treatment furnace with hydrogen atmosphere, heating to 260 ℃ at the heating rate of 50 ℃/min, preserving heat for 10min, heating to 320 ℃ at the heating rate of 10 ℃/min, preserving heat for 10min, heating to 400 ℃ at the heating rate of 10 ℃/min, preserving heat for 10min, heating to 480 ℃ at the heating rate of 10 ℃/min, preserving heat for 10min, heating to 560 ℃ at the heating rate of 5 ℃/min, preserving heat for 30min, applying a transverse magnetic field with the magnetic field size of 55mT to the iron core when the heat preservation starts, naturally cooling the iron core to 150 ℃ along with the heat treatment furnace after the heat preservation is finished, closing the magnetic field, and taking out the iron core to obtain the iron-based nanocrystalline strip.
The embodiment provides a method for preparing a magnetizer, which comprises the following steps:
1) Unreeling the iron core, and forming a polyacrylic resin adhesive layer with the thickness of 6 mu m on one side surface of the unreeled iron-based nanocrystalline strip to obtain an iron-based nanocrystalline strip with one side coated with adhesive;
2) The two side surfaces of the obtained single-sided glued iron-based nanocrystalline strip pass through two regular hexagon magnetic crushing rollers with side length of 5mm under the protection of a release film, and the magnetic crushing rollers are positioned at the speed of 250kg/m 2 Carrying out magnetic crushing under the pressure of the powder to obtain the iron-based nanocrystalline strip after magnetic crushing;
3) Cutting the crushed iron-based nanocrystalline strips along the direction perpendicular to the adhesive layer to form 350 substrates with the width of 15mm and the length of 150mm (the length is the length of the crushed iron-based nanocrystalline strips in the width direction), and respectively pasting and superposing 5 substrates sequentially along the direction perpendicular to the adhesive layer through the adhesive layer to form 70 superposed iron-based nanocrystalline strip blocks (the superposed iron-based nanocrystalline strip blocks have the width of 15mm, the length of 150mm and the thickness of 90 mu m);
4) Cutting each superimposed iron-based nanocrystalline strip block along the direction perpendicular to the adhesive layer to form sub iron-based nanocrystalline strip blocks with the length of 10mm, the length of 100mm and the thickness of 90 mu m, and sequentially pasting and superimposing the sub iron-based nanocrystalline strip blocks along the direction perpendicular to the adhesive layer through the adhesive layer to obtain a magnetic conduction precursor (the size of the magnetic conduction precursor is 100mm x 6.3mm x 10 mm);
5) And (3) placing the magnetic conduction precursor in a vacuum magnetic field heat treatment furnace, and performing heat treatment at 80 ℃ for 15min under the action of a magnetic field to obtain the magnetic conductor, wherein the direction of the magnetic field is parallel to the width direction of the sub-iron-based nanocrystalline strip block in the magnetic conduction precursor, and the magnetic field strength is 50mT.
Example 4
The embodiment provides an iron-based nanocrystalline strip, which has a chemical formula:
Fe 78.5 Si 5 B 10 Nb 1 Cu 1 Cl 1 Ge 1.5 Tb 2 ；
the above-mentioned method for producing an iron-based nanocrystalline strip is similar to that of example 1, except that the atmosphere of the heat treatment furnace in step 2) is a nitrogen atmosphere.
Example 5
The embodiment provides an iron-based nanocrystalline strip, which has a chemical formula:
Fe 78.5 Si 5 B 10 Nb 1 Cu 1 Cl 1 Ge 1.5 Tb 2 ；
the above-mentioned iron-based nanocrystalline strip was prepared in the same manner as in example 1, and the magnetizer was prepared in the same manner as in example 1, except that the magnetic field was not applied in step 5).
Comparative example 1
The comparative example provides an iron-based nanocrystalline strip having the formula:
Fe 78.5 Si 5 B 10 Nb 1 Cu 1 Cl 1 Ge 1.5 ；
the preparation method of the iron-based nanocrystalline strip is similar to that in the embodiment 1, except that the raw materials in the step 1) are pure iron, pure silicon, ferroboron, ferroniobium, pure copper, ferric chloride and pure germanium.
Comparative example 2
The comparative example provides an iron-based nanocrystalline strip having the formula:
Fe 78.5 Si 5 B 10 Nb 1 Cu 1 Cl 1 Tb 2 ；
the preparation method of the iron-based nanocrystalline strip is similar to that in the embodiment 1, and the difference is that the raw materials in the step 1) are industrial pure iron, pure silicon, ferroboron, ferroniobium, pure copper, terbium chloride and rare earth terbium.
Comparative example 3
The comparative example provides an iron-based nanocrystalline strip having the formula:
Fe 78.5 Si 5 B 10 Nb 1 Cu 1 Ge 1.5 Tb 2 ；
the preparation method of the iron-based nanocrystalline strip is similar to that in the embodiment 1, except that the raw materials in the step 1) are industrial pure iron, pure silicon, ferroboron, ferroniobium, pure copper, pure germanium and rare earth terbium.
Test case
The saturated magnetic induction intensity Bs was measured using a Vibrating Sample Magnetometer (VSM), the magnetic permeability μ was measured using an impedance analyzer, and the loss P was measured using an ac B-H meter for the cores obtained after the end of the heat preservation in step 2) in the preparation methods of iron-based nanocrystalline tapes of examples 1 to 5 and comparative examples 1 to 3; the magnetic permeability of the real part and the imaginary part of the magnetizers obtained by the preparation methods of the magnetizers in examples 1 to 5 and comparative examples 1 to 3 are measured by using an impedance analyzer to obtain the magnetic loss ratio.
The test conditions of magnetic permeability, loss and magnetic loss ratio are as follows: 100kHz, 0.2T, 25 ℃; the test results of the saturation induction, magnetic permeability, loss and magnetic loss ratio are shown in table 1.
TABLE 1
Compared with the embodiment 1, the addition of the Tb rare earth element ensures that the prepared precursor strip is not easy to crystallize, improves the amorphous forming capability and improves the soft magnetic performance of the iron core; as can be seen from comparative example 2, the addition of the rare earth element of Ge element can effectively improve the soft magnetic performance of the iron core, because the Al and Ge elements can inhibit the overgrowth of α -Fe crystal grains, improve the amorphous forming capability and improve the thermal stability of the amorphous matrix; as can be seen from comparative example 3, compared with example 1, the addition of the halogen element Cl can improve the uniformity of the smelting solution, refine the grains in the subsequent heat treatment process, and improve the soft magnetic performance; as can be seen from example 4, the magnetic performance is deteriorated by adopting nitrogen atmosphere annealing in the iron core preparation process, while the invention adopts hydrogen atmosphere to effectively separate out uniform alpha-Fe crystal grains, thereby improving the high-frequency magnetic performance and increasing the toughness of the material so as to facilitate the preparation of the magnetizer in the later period; it can be seen from example 5 that the preparation of the magnetizer is not subjected to secondary magnetic field heat treatment, which is not beneficial to improving the insulation property and the magnetic performance between the broken magnetic pieces of the magnetic conductive sheet.
It is apparent that the above examples are given by way of illustration only and are not limiting of the embodiments. Other variations or modifications of the above teachings will be apparent to those of ordinary skill in the art. It is not necessary here nor is it exhaustive of all embodiments. While still being apparent from variations or modifications that may be made by those skilled in the art are within the scope of the invention.
Claims (9)
1. An iron-based nanocrystalline strip, characterized in that the chemical formula of the iron-based nanocrystalline strip material is Fe a Si b B c Nb d Cu e E f T g M h ；
Wherein E is at least one selected from halogen elements; t is selected from at least one of Ge and Al; m is selected from at least one of rare earth metals;
a. b, c, d, e, f, g, h the atomic percentages of the corresponding elements are a+b+c+d+e+f+g+h=100deg.at%, 76at% not more than a not more than 82at%, 3at% not more than b not more than 7at%, 9at% not more than c not more than 12at%, 1at% not more than d not more than 3at%, 0.5at% not more than e not more than 1.5at%, 0.5at% not more than f not more than 1.5at%, 0.5at% not more than g not more than 2.5at%, 0.5at% not more than h not more than 2.5at%.
2. The iron-based nanocrystalline strip according to claim 1, wherein E is selected from at least one of F, cl or Br; and/or the number of the groups of groups,
and M is at least one selected from Tb and Gd.
3. The iron-based nanocrystalline strip according to claim 1 or 2, wherein the strip thickness is 12-16 μm, the strip width is 150-250 mm, and the strip width direction thickness deviation is less than 0.001mm.
4. A method for producing the iron-based nanocrystalline strip according to any one of claims 1 to 3, comprising the steps of: weighing raw materials according to a stoichiometric ratio, mixing and smelting the raw materials, forming an amorphous precursor strip from a melt obtained by smelting, and performing heat treatment on the formed amorphous precursor strip to obtain the iron-based nanocrystalline strip;
the heat treatment process is carried out under a hydrogen atmosphere;
the heat treatment process is that the amorphous precursor strip is subjected to stress heat treatment and then crystallization treatment;
the stress heat treatment process is realized through an n-step ladder heat treatment process, wherein n is an integer greater than or equal to 2 and less than or equal to 20, the temperature of the 1 st heat treatment is 250-300 ℃, and the temperature of the n-step heat treatment is 450-500 ℃; the heat preservation time of each step of heat treatment is 5-15min, and the heating rate is 1-50 ℃/min; and/or the number of the groups of groups,
the crystallization treatment comprises a heating process and a heat preservation process, wherein the heat preservation process is carried out under the action of a transverse magnetic field, and the direction of the transverse magnetic field is perpendicular to the longitudinal section of the amorphous precursor strip; the strength of the transverse magnetic field is 40-60 mT; and/or the number of the groups of groups,
the heating rate of the heating process is 1-50 ℃/min;
the temperature of the heat preservation process is 550-580 ℃ and the time is 10-30 min.
5. The method according to claim 4, wherein the process of forming the amorphous precursor strip is to form the amorphous precursor strip from the melted product by a single-roll rapid quenching method;
wherein in the single roll rapid quenching method, the cooling rate of the melt is 10 5 ～10 7 ℃/s；
The thickness of the formed amorphous precursor strip is 12-16 mu m, and the width of the strip is 150-250 mm; and/or the number of the groups of groups,
before the amorphous precursor strip is subjected to heat treatment, the method further comprises the step of winding the amorphous precursor strip to form an iron core.
6. A magnetizer, characterized in that the magnetizer comprises the iron-based nanocrystalline strip according to any one of claims 1-3 or the iron-based nanocrystalline strip prepared by the preparation method according to any one of claims 4-5.
7. The method for preparing a magnetizer according to claim 6, comprising the steps of:
1) Forming a glue layer on one side surface of the iron-based nanocrystalline strip to obtain the iron-based nanocrystalline strip with single-sided glue coating;
2) Carrying out roller crushing and magnetic crushing on the iron-based nanocrystalline strip coated with the adhesive on one side to obtain a crushed iron-based nanocrystalline strip;
3) Attaching, cutting and laminating the crushed iron-based nanocrystalline strips to obtain a magnetic conduction precursor;
4) And performing magnetic field heat treatment on the magnetic conduction precursor to obtain the magnetizer.
8. The method according to claim 7, wherein the thickness of the adhesive layer in step 1) is 4-8 μm; and/or the number of the groups of groups,
the adhesive layer is made of polyacrylic resin; and/or the number of the groups of groups,
the rolling pressure is 25-400kg/m 2 。
9. The method according to claim 7, wherein a magnetic field direction in the magnetic field heat treatment is parallel to a width direction of the iron-based nanocrystalline strip in which the magnetizer is produced, wherein the magnetic field strength is 40 to 60mT; the heat treatment temperature is 50-150deg.C, and the time is 5-30min.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311220123.1A CN117265398B (en) | 2023-09-20 | 2023-09-20 | Iron-based nanocrystalline strip and preparation method and application thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311220123.1A CN117265398B (en) | 2023-09-20 | 2023-09-20 | Iron-based nanocrystalline strip and preparation method and application thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN117265398A CN117265398A (en) | 2023-12-22 |
| CN117265398B true CN117265398B (en) | 2024-04-09 |
Family
ID=89207521
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202311220123.1A Active CN117265398B (en) | 2023-09-20 | 2023-09-20 | Iron-based nanocrystalline strip and preparation method and application thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN117265398B (en) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104934179A (en) * | 2014-05-27 | 2015-09-23 | 安泰科技股份有限公司 | Fe-based nanocrystalline soft magnetic alloy with strong amorphous forming ability and preparing method of Fe-based nanocrystalline soft magnetic alloy |
| WO2022019335A1 (en) * | 2020-07-22 | 2022-01-27 | 日本ケミコン株式会社 | Fe-based nanocrystal soft magnetic alloy and magnetic component |
| WO2023163005A1 (en) * | 2022-02-25 | 2023-08-31 | 日本ケミコン株式会社 | Fe-based nanocrystal soft magnetic alloy core |
-
2023
- 2023-09-20 CN CN202311220123.1A patent/CN117265398B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104934179A (en) * | 2014-05-27 | 2015-09-23 | 安泰科技股份有限公司 | Fe-based nanocrystalline soft magnetic alloy with strong amorphous forming ability and preparing method of Fe-based nanocrystalline soft magnetic alloy |
| WO2022019335A1 (en) * | 2020-07-22 | 2022-01-27 | 日本ケミコン株式会社 | Fe-based nanocrystal soft magnetic alloy and magnetic component |
| WO2023163005A1 (en) * | 2022-02-25 | 2023-08-31 | 日本ケミコン株式会社 | Fe-based nanocrystal soft magnetic alloy core |
Also Published As
| Publication number | Publication date |
|---|---|
| CN117265398A (en) | 2023-12-22 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN106756643B (en) | A kind of iron-based amorphous and nanocrystalline soft magnetic alloy and preparation method thereof | |
| CN102304669B (en) | Iron-based nanocrystalline soft magnetic alloy with high saturation magnetic induction and low cost | |
| TWI424071B (en) | Fe-based amorphous alloy and a powder core using the Fe-based amorphous alloy and a powder core for sealing the coil | |
| JP2019065398A (en) | Laminate magnetic core | |
| CN101840763A (en) | Iron-based nano-crystalline magnetically-soft alloy having high saturation magnetic induction intensity | |
| CN101030468B (en) | Production of amorphous nano-crystal block magnetic component | |
| CN109102998B (en) | Soft magnetic sheet and preparation method and application thereof | |
| CN105861959B (en) | Intelligent electric meter low angular difference nano-crystal soft magnetic alloy magnetic core and preparation method thereof | |
| CN104593666B (en) | Preparation method of lanthanum-doped iron-cobalt-base soft magnetic material | |
| TWI636143B (en) | Soft magnetic alloy and magnetic parts | |
| CN116479321B (en) | Nanocrystalline magnetically soft alloy strip and preparation method and application thereof | |
| JP5470683B2 (en) | Metal powder for dust core and method for producing dust core | |
| CN111057970A (en) | Preparation method of amorphous nanocrystalline alloy with high magnetic permeability | |
| CN111636039A (en) | High-saturation-magnetization Fe-B-P-C-Cu-M amorphous nanocrystalline magnetically soft alloy and preparation method thereof | |
| CN109003792B (en) | Soft magnetic sheet and preparation method and application thereof | |
| CN109440021A (en) | A kind of iron-based amorphous and nanocrystalline soft magnetic alloy and its preparation method and application | |
| CN111554465B (en) | Nanocrystalline magnetically soft alloy and preparation method and application thereof | |
| CN101451215A (en) | Nanocrystalline composite NdFeB permanent magnetic alloy and preparation method thereof | |
| CN107617737B (en) | Sintered Nd-Fe-B permanent magnetic material powder and its preparation method and application | |
| CN102129907B (en) | Nanocrystalline soft magnetic alloy iron core with high initial permeability and low remanence and preparation method thereof | |
| CN112002513A (en) | Method for inhibiting surface crystallization of Fe-based nanocrystalline magnetically soft alloy amorphous precursor | |
| CN117265398B (en) | Iron-based nanocrystalline strip and preparation method and application thereof | |
| CN102424937B (en) | Method for improving soft magnetic properties of bulk amorphous alloy Fe-M-B | |
| TW201606087A (en) | Method of forming magnetic core | |
| JP4277432B2 (en) | Low magnetostrictive bi-directional electrical steel sheet |
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 | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |