Provided is an alloy containing Fe and B. The alloy comprises an amorphous phase 10 and a plurality of α-Fe crystalline phases 12 formed within the amorphous phase 10, has an average Fe concentration of at least 79 at% in the entire alloy, and has a crystallinity of 0.3-20% as measured using X-ray diffraction.
Provided is a laminate that enhances an electromagnetic wave shielding effect in a low-frequency region. The present invention provides a laminate including at least one non-magnetic metal layer and at least one magnetic metal layer, at least one magnetic metal layer including an amorphous phase.
This alloy comprises, by average concentration, 1.5-15.5 atom% of Ni, 0-10.0 atom% of Co, 3.0-16.0 atom% of B, 0.5-10.0 atom% of P, 0-2.0 atom% of Cu, 0-6.0 atom% of Si, and 0-6.0 atom% of C, wherein the total average concentration of Nb, Mo, Zr, W, V, Hf, Ta, Al, Ti, and Cr is 0-6.0 atom%, and the sum of the average concentration of Fe, the average concentration of Ni, and the average concentration of Co is 78.0-88.0 atom%.
B22D 11/06 - Continuous casting of metals, i.e. casting in indefinite lengths into moulds with travelling walls, e.g. with rolls, plates, belts, caterpillars
The present invention is an alloy which contains Fe, B, P and Cu and has an amorphous phase and multiple crystalline phases formed within the amorphous phase. The average Fe concentration in the entire alloy is 79 atm% or greater. The density of a Cu cluster is 0.20 × 1024/m3 or greater, when the Cu cluster is defined as a region, from among a plurality of regions for which one side is 1.0nm, having a Cu concentration of 6.0 atm% or greater in atom probe tomography.
An alloy comprising a noncrystalline phase 16, wherein the average Fe concentration of the alloy overall is 82.0-88.0 at. %, the average Cu concentration of the alloy overall is 0.4-1.0 at. %, the average P concentration of the alloy overall is 5.0-9.0 at. %, the average B concentration of the alloy overall is 6.0-10.0 at. %, the average Si concentration of the alloy overall is 0.4-1.9 at. %, the average C concentration of the alloy overall is 0-2.0 at. %, the average impurity concentration of impurities other than Fe, Cu, P, B, Si, and C in the alloy overall is 0-0.3 at. %, and the total of the average Fe concentration, the average Cu concentration, the average P concentration, the average B concentration, the average Si concentration, the average C concentration, and the average impurity concentration is 100.0 at. %.
A unit for a metal powder manufacturing apparatus, the unit being provided with: a chamber including a wall for surrounding at least a portion of a melt flow channel in which a metallic melt 45 of a molten metal flows, a gas flow channel 20 which is provided in the wall and in which a gas having a pressure higher than atmospheric pressure flows, and a gas jetting hole 21 for jetting the gas to the melt flow channel in the direction of accelerating the metallic melt; and a liquid film forming part for forming a liquid film for solidifying the metallic melt in the melt flow channel, downstream of the position at which the gas is jetted.
B22F 9/08 - Making metallic powder or suspensions thereofApparatus or devices specially adapted therefor using physical processes starting from liquid material by casting, e.g. through sieves or in water, by atomising or spraying
f having an amorphous phase as a main phase is provided. Parameters satisfy the following conditions: 3.5≤a≤4.5 at %, 6≤b≤15 at %, 2≤c≤11 at %, 3≤d≤5 at %, 0.5≤e≤1.1 at %, and 0≤f≤2 at %. With this composition, the alloy powder has good magnetic characteristics even when it has a large particle diameter such as 90 μm. Therefore, yield thereof is improved.
C22C 38/02 - Ferrous alloys, e.g. steel alloys containing silicon
C22C 38/10 - Ferrous alloys, e.g. steel alloys containing cobalt
C22C 38/16 - Ferrous alloys, e.g. steel alloys containing copper
C22C 45/02 - Amorphous alloys with iron as the major constituent
B22F 1/00 - Metallic powderTreatment of metallic powder, e.g. to facilitate working or to improve properties
H01F 1/147 - Alloys characterised by their composition
H01F 1/20 - Magnets or magnetic bodies characterised by the magnetic materials thereforSelection of materials for their magnetic properties of inorganic materials characterised by their coercivity of soft-magnetic materials metals or alloys in the form of particles, e.g. powder
H01F 1/153 - Amorphous metallic alloys, e.g. glassy metals
This method, for producing a magnetic powder that has a nanocrystalline composition, is not prone to problems during heat treatment for achieving nanocrystallization, can efficiently perform heat treatment, and involves a mixing step for preparing a mixed powder body that contains a magnetic powder having a hetero-amorphous composition and a heat-radiating nonmagnetic powder having a heat conductivity of 20 W*m/K or greater, and a heat treatment step for subjecting the mixed powder body to heat treatment to convert the composition of the magnetic powder contained by the mixed powder body from a hetero-amorphous composition to a nanocrystalline composition.
H01F 1/153 - Amorphous metallic alloys, e.g. glassy metals
B22F 1/00 - Metallic powderTreatment of metallic powder, e.g. to facilitate working or to improve properties
C22C 45/02 - Amorphous alloys with iron as the major constituent
H01F 41/02 - Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformersApparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties for manufacturing cores, coils or magnets
As a method of producing a dust core in which the Fe content in a Fe-base alloy composition is greater than or equal to 79.5 at% and which, even when the content of amorphizing elements is low, is not prone to problems resulting from crystallization of the amorphous phase in a soft magnetic powder, this method, for producing a dust core containing a soft magnetic powder that comprises a Fe-base alloy composition which is represented by the compositional formula FeaSibBcPdXe (wherein a + b + c + d + e = 100 at% and X is any additional element) and which satisfies the composition conditions 79.5 at% ≦ a ≦ 80.5 at%, 1.8 at% ≦ b ≦ 6×α at%, 0.5 at% ≦ c ≦ 13.5×α at%, 4.5 at% ≦ d ≦ 14×α at%, 0 at% ≦ e ≦ (1-α)×(b+c+d), and 0.8 ≦ α ≦ 1.0, is characterized in by involving a molding step for hot press molding a mixed powder body that contains the aforementioned soft magnetic powder and a binder, and an annealing step for annealing the molded product obtained in the molding step; in the molding step, the pressure force is 400 MPa or greater, the atmosphere is inert, and the temperature during pressurization is 465°C to 520°C; in annealing step, the atmosphere is inert and the annealing temperature is 390°C to 430°C.
H01F 41/02 - Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformersApparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties for manufacturing cores, coils or magnets
B22F 1/00 - Metallic powderTreatment of metallic powder, e.g. to facilitate working or to improve properties
B22F 3/00 - Manufacture of workpieces or articles from metallic powder characterised by the manner of compacting or sinteringApparatus specially adapted therefor
C22C 33/02 - Making ferrous alloys by powder metallurgy
H01F 1/153 - Amorphous metallic alloys, e.g. glassy metals
H01F 1/24 - Magnets or magnetic bodies characterised by the magnetic materials thereforSelection of materials for their magnetic properties of inorganic materials characterised by their coercivity of soft-magnetic materials metals or alloys in the form of particles, e.g. powder pressed, sintered, or bound together the particles being insulated
A soft magnetic material according to the present disclosure contains particles, each of which comprises a plurality of nano-sized crystallites and an amorphous phase that is present around the crystallites, and wherein: the average particle diameter of the crystallites is 30 nm or less; the average thickness of the amorphous phase is 30 nm or less; and if the breadth of a cross-section of each particle is r, the average Fe concentration in the amorphous phase is lower than the average Fe concentration of the crystallites in a region ranging from the depth of 0.2r (inclusive) from the surface of the particle to the depth of 0.4r (inclusive) from the surface of the particle.
H01F 1/20 - Magnets or magnetic bodies characterised by the magnetic materials thereforSelection of materials for their magnetic properties of inorganic materials characterised by their coercivity of soft-magnetic materials metals or alloys in the form of particles, e.g. powder
B22F 1/00 - Metallic powderTreatment of metallic powder, e.g. to facilitate working or to improve properties
B22F 3/00 - Manufacture of workpieces or articles from metallic powder characterised by the manner of compacting or sinteringApparatus specially adapted therefor
B22F 9/08 - Making metallic powder or suspensions thereofApparatus or devices specially adapted therefor using physical processes starting from liquid material by casting, e.g. through sieves or in water, by atomising or spraying
This soft magnetic powder contains, as a main component, particles free of hollow parts. In a cross section of a molded body resulting from compaction molding the soft magnetic powder so that the volume filling rate is 75%-77%, the number of the hollow particles present in a 2.5 mm square region is 40 or less.
H01F 1/26 - Magnets or magnetic bodies characterised by the magnetic materials thereforSelection of materials for their magnetic properties of inorganic materials characterised by their coercivity of soft-magnetic materials metals or alloys in the form of particles, e.g. powder pressed, sintered, or bound together the particles being insulated by macromolecular organic substances
B22F 1/00 - Metallic powderTreatment of metallic powder, e.g. to facilitate working or to improve properties
B22F 9/08 - Making metallic powder or suspensions thereofApparatus or devices specially adapted therefor using physical processes starting from liquid material by casting, e.g. through sieves or in water, by atomising or spraying
C22C 45/02 - Amorphous alloys with iron as the major constituent
H01F 17/04 - Fixed inductances of the signal type with magnetic core
16.
LAYERED MAGNETIC CORE AND METHOD FOR MANUFACTURING SAME
A method for manufacturing a magnetic core, provided with a step for manufacturing a magnetic core, and a layering step for obtaining a magnetic core shape after performing a processing step for forming a desired shape from a thin strip comprising an alloy composition and a heat-treatment step for depositing a bcc Fe crystal. Here, the alloy composition is Fe-B-Si-P-Cu-C having an amorphous phase as the main phase thereof, and the thin strip is heated in the heat-treatment step at a high temperature increase rate to a temperature higher than the crystallization temperature of the alloy composition.
H01F 1/16 - Magnets or magnetic bodies characterised by the magnetic materials thereforSelection of materials for their magnetic properties of inorganic materials characterised by their coercivity of soft-magnetic materials metals or alloys in the form of sheets
H01F 41/02 - Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformersApparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties for manufacturing cores, coils or magnets
17.
Fe-BASED ALLOY COMPOSITION, SOFT MAGNETIC POWDER, MOLDED MEMBER, DUST CORE, ELECTRIC/ELECTRONIC COMPONENT, ELECTRIC/ELECTRONIC DEVICE, MAGNETIC SHEET, COMMUNICATIONS COMPONENT, COMMUNICATIONS DEVICE, AND ELECTROMAGNETIC INTERFERENCE-SUPPRESSING MEMBER
Provided is an Fe-based alloy composition whereby a gas atomization method can be applied and a soft magnetic material having an amorphous phase as the main phase thereof formed. The Fe-based alloy composition has a compositional formula FeaSibBcPdXe (a + b + c + d + e = 100 at%). X is any added element and is at least one type selected from the group consisting of Ni, Co, Ti, Zr, Hf, V, Nb, Ta, Cr, Mo, W, Mn, Re, platinum-group elements, Au, Ag, Cu, Zn, In, Sn, As, Sb, Bi, S, Y, N, O, C, and rare earth elements. The Fe-based alloy composition fulfils one of the following conditions 1 to 3. Condition 1: 79.5 at% ≤ a ≤ 80.5 at%; 1.8 at% ≤ b ≤ 6 × α at%; 0.5 at% ≤ c ≤ 13.5 × α at%; 4.5 at% ≤ d ≤ 14 × α at%; 0 at% ≤ e ≤ (1 - α) × (b + c + d); and 0.8 ≤ α ≤ 1.0.Condition 2: 80.5 at% ≤ a ≤ 81.5 at%; 1 at% ≤ b ≤ 4.8 × α at%; 4.3 at% ≤ c ≤ 12 × α at%; 6.5 at% ≤ d ≤ 11 × α at%; 0 at% ≤ e ≤ (1 - α) × (b + c + d); and 0.8 ≤ α ≤ 1.0.Condition 3: 80.5 at% ≤ a ≤ 81.5 at%; 1 × α at% ≤ b ≤ 2.8 × α at%; 2.8 × α at% ≤ c ≤ 8 × α at%; 11 × α at% ≤ d ≤ 14.5 × α at%; 0 at% ≤ e ≤ (1 - α) × (b + c + d); and 0.8 ≤ α ≤ 1.0.
B22F 1/00 - Metallic powderTreatment of metallic powder, e.g. to facilitate working or to improve properties
B22F 3/00 - Manufacture of workpieces or articles from metallic powder characterised by the manner of compacting or sinteringApparatus specially adapted therefor
B22F 9/08 - Making metallic powder or suspensions thereofApparatus or devices specially adapted therefor using physical processes starting from liquid material by casting, e.g. through sieves or in water, by atomising or spraying
C22C 45/02 - Amorphous alloys with iron as the major constituent
H01F 1/14 - Magnets or magnetic bodies characterised by the magnetic materials thereforSelection of materials for their magnetic properties of inorganic materials characterised by their coercivity of soft-magnetic materials metals or alloys
H01F 1/22 - Magnets or magnetic bodies characterised by the magnetic materials thereforSelection of materials for their magnetic properties of inorganic materials characterised by their coercivity of soft-magnetic materials metals or alloys in the form of particles, e.g. powder pressed, sintered, or bound together
Provided is an Fe-based alloy composition whereby a gas atomization method can be applied and a soft magnetic material having an amorphous phase as the main phase thereof formed. The Fe-based alloy composition has a compositional formula FeaSibBcPdXe (a + b + c + d + e = 100 at%). X is any added element and is at least one type selected from the group consisting of Ni, Co, Ti, Zr, Hf, V, Nb, Ta, Cr, Mo, W, Mn, Re, platinum-group elements, Au, Ag, Cu, Zn, In, Sn, As, Sb, Bi, S, Y, N, O, C, and rare earth elements. The Fe-based alloy composition fulfils the following conditions: 77.5 at% ≤ a ≤ 78.5 at%; 2.2 at% ≤ b ≤ 8.5 × α at%; 2.5 at% ≤ c ≤ 15.4 × α at%; 4.4 at% ≤ d ≤ 15.4 × α at%; 0 at% ≤ e ≤ (1 - α) × (b + c + d); and 0.8 ≤ α ≤ 1.0.
B22F 1/00 - Metallic powderTreatment of metallic powder, e.g. to facilitate working or to improve properties
B22F 3/00 - Manufacture of workpieces or articles from metallic powder characterised by the manner of compacting or sinteringApparatus specially adapted therefor
B22F 9/08 - Making metallic powder or suspensions thereofApparatus or devices specially adapted therefor using physical processes starting from liquid material by casting, e.g. through sieves or in water, by atomising or spraying
C22C 45/02 - Amorphous alloys with iron as the major constituent
H01F 1/14 - Magnets or magnetic bodies characterised by the magnetic materials thereforSelection of materials for their magnetic properties of inorganic materials characterised by their coercivity of soft-magnetic materials metals or alloys
H01F 1/22 - Magnets or magnetic bodies characterised by the magnetic materials thereforSelection of materials for their magnetic properties of inorganic materials characterised by their coercivity of soft-magnetic materials metals or alloys in the form of particles, e.g. powder pressed, sintered, or bound together
This magnetic powder represented by general formula Fea(SibBcPd)100-a is produced with a gas atomization method. Representing as (a, b) the value of a and the value of b in the general formula, (a, b) is within a prescribed region V1 surrounded by A1(71.0, 0.19), B1(79.6, 0), C1(80.0, 0), D1(81.0, 0.17), E1(81.0, 0.44), F1(79.6, 0.78) and G1(71.0, 0.38). Similarly, for the value of a and the value of c, and the value of a and the value of d, the pairs (a, c) and (a, d) are within a prescribed region. By this means, it is possible to obtain an alloy magnetic powder which has high saturation magnetic flux density, low magnetic loss, and is spherical and easy to handle; and it is possible using said magnetic material to obtain a magnetic core and various coil components, and also a motor.
B22F 1/00 - Metallic powderTreatment of metallic powder, e.g. to facilitate working or to improve properties
B22F 3/00 - Manufacture of workpieces or articles from metallic powder characterised by the manner of compacting or sinteringApparatus specially adapted therefor
B22F 9/08 - Making metallic powder or suspensions thereofApparatus or devices specially adapted therefor using physical processes starting from liquid material by casting, e.g. through sieves or in water, by atomising or spraying
C22C 45/02 - Amorphous alloys with iron as the major constituent
H01F 1/153 - Amorphous metallic alloys, e.g. glassy metals
H01F 1/22 - Magnets or magnetic bodies characterised by the magnetic materials thereforSelection of materials for their magnetic properties of inorganic materials characterised by their coercivity of soft-magnetic materials metals or alloys in the form of particles, e.g. powder pressed, sintered, or bound together
H02K 1/02 - Details of the magnetic circuit characterised by the magnetic material
20.
MAGNETIC POWDER AND PRODUCTION METHOD THEREOF, MAGNETIC CORE AND PRODUCTION METHOD THEREOF, COIL COMPONENT AND MOTOR
This magnetic powder is represented by general formula FeaSibBcPdCue. Therein, a, b, c, d and e satisfy 71.0 ≦ a ≦ 81.0, 0.14 ≦ b/c ≦ 5, 0 ≦ d ≦ 14, 0 < e ≦ 1.4, d ≦ 0.8a-50, e < -0.1(a+d)+10, and a+b+c+d+e = 100. The degree of crystallization measured by x-ray diffraction is less than or equal to 30% in the case of containing at least an amorphous phase and a compound phase, and is less than or equal to 60% in the case of not containing a compound phase. This magnetic powder is produced with a gas atomization method in which a dissolving chamber 2 and a atomizing chamber 3 have a mixed gas atmosphere of an inert gas and a hydrogen gas. By this means, it is possible to obtain an alloy magnetic material which has high saturation magnetic flux density and low magnetic loss; and it is possible using said magnetic powder to obtain a magnetic core and various coil components, and also a motor.
B22F 1/00 - Metallic powderTreatment of metallic powder, e.g. to facilitate working or to improve properties
B22F 3/00 - Manufacture of workpieces or articles from metallic powder characterised by the manner of compacting or sinteringApparatus specially adapted therefor
B22F 9/08 - Making metallic powder or suspensions thereofApparatus or devices specially adapted therefor using physical processes starting from liquid material by casting, e.g. through sieves or in water, by atomising or spraying
C22C 45/02 - Amorphous alloys with iron as the major constituent
H01F 1/14 - Magnets or magnetic bodies characterised by the magnetic materials thereforSelection of materials for their magnetic properties of inorganic materials characterised by their coercivity of soft-magnetic materials metals or alloys
H01F 1/22 - Magnets or magnetic bodies characterised by the magnetic materials thereforSelection of materials for their magnetic properties of inorganic materials characterised by their coercivity of soft-magnetic materials metals or alloys in the form of particles, e.g. powder pressed, sintered, or bound together
H02K 1/02 - Details of the magnetic circuit characterised by the magnetic material
06 - Common metals and ores; objects made of metal
09 - Scientific and electric apparatus and instruments
Goods & Services
[ Materials of magnetic alloy with non-equilibrium crystal structure and other materials of magnetic alloy; ] soft magnetic alloy powder; soft magnetic alloy strips; soft magnetic alloy plates [ ; hard magnetic alloy powder; hard magnetic alloy strips; hard magnetic alloy plates; and agglomerated materials of hard magnetic alloy ] Magnetic cores [ ; and magnets ]
06 - Common metals and ores; objects made of metal
09 - Scientific and electric apparatus and instruments
Goods & Services
[ Materials of magnetic alloy with non-equilibrium crystal structure and other materials of magnetic alloy; ] soft magnetic alloy powder; soft magnetic alloy strips; soft magnetic alloy plates [ ; hard magnetic alloy powder; hard magnetic alloy strips; hard magnetic alloy plates; and agglomerated materials of hard magnetic alloy ] Magnetic cores [ ; and magnets ]
01 - Chemical and biological materials for industrial, scientific and agricultural use
09 - Scientific and electric apparatus and instruments
Goods & Services
Materials of magnetic alloy with non-equilibrium crystal structure and other materials of magnetic alloy; Soft magnetic alloy powder; Soft magnetic alloy strips; Soft magnetic alloy plates; Hard magnetic alloy powder; Hard magnetic alloy strips; Hard magnetic alloy plates; and Agglomerated materials of hard magnetic alloy. Magnetic cores; and Magnets.
01 - Chemical and biological materials for industrial, scientific and agricultural use
09 - Scientific and electric apparatus and instruments
Goods & Services
Materials of magnetic alloy with non-equilibrium crystal structure and other materials of magnetic alloy; Soft magnetic alloy powder; Soft magnetic alloy strips; Soft magnetic alloy plates; Hard magnetic alloy powder; Hard magnetic alloy strips; Hard magnetic alloy plates; and Agglomerated materials of hard magnetic alloy. Magnetic cores; and Magnets.
