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7608154 |
Nonoriented electrical steel sheet excellent in core loss
A nonoriented electrical steel sheet excellent in core loss comprising copper sulfides with a sphere-equivalent radius of 100 nm or less, wherein the number density of the copper sulfides is less...
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7601229 |
Process for producing soft magnetism material, soft magnetism material and powder magnetic core
A method for making soft magnetic material includes: a first heat treatment step applying a temperature of at least 400 deg C. and less than 900 deg C. to metal magnetic particles; a step for...
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7594972 |
Alloy lump for R-T-B type sintered magnet, producing method thereof, and magnet
The present invention is an alloy lump for R-T-B type sintered magnets, including an R 2 T 14 B columnar crystal and an R-rich phase (in which R is at least one rare earth element including Y, T is...
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7588648 |
Soft magnetism material and powder magnetic core
The present invention provides a soft magnetic material and a powder magnetic core having desired magnetic characteristics. A soft magnetic material contains a metal magnetic powder 10 . The...
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7582171 |
High-strength, soft-magnetic iron-cobalt-vanadium alloy
A high-strength, soft-magnetic iron-cobalt-vanadium alloy selection is proposed, consisting of 35.0≦Co≦55.0% by weight, 0.75≦V≦2.5% by weight, O≦Ta+2×Nb≦0.8% by weight,...
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7569115 |
Assemblages of magnetic alloy nanoparticles
Assemblages of particles of a magnetic alloy that are suited to magnetic recording are represented by the formula [T X M 1-X ] containing T and M in a composition ratio where X in the formula is in...
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7540927 |
Soft magnetic steels excellent in cold forgeability, machinability and magnetic properties, and soft magnetic steel parts excellent in magnetic properties
A soft magnetic steel has, on the mass basis, a carbon content of 0.0015% to 0.02%, a manganese content of 0.15% to 0.5%, and a sulfur content of 0.015% to 0.1%, has a ratio Mn/S of 5.7 or more,...
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7513959 |
Non-oriented electrical steel sheet and method for manufacturing the same
When a non-oriented electrical steel sheet is manufactured, simultaneously having superior magnetic properties and high strengths, a composition containing 0.02% or less of C, 4.5% or less of Si,...
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7501028 |
Non-grain oriented magnetic steel strip or magnetic steel sheet and method for its production
The invention relates to non-grain oriented magnetic steel sheets which can be produced as final annealed and as a non-final annealed types in such a way that they have improved magnetic...
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7488369 |
Magnetostriction device
A magnetostriction device is made such that an impregnated composition material, such as phenol resin, a resin in which an inorganic material such as silica is dispersed into a phenol resin, an...
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7473325 |
Current transformer core, current transformer and power meter
A current transformer core made of an alloy having a composition represented by the general formula: Fe 100-x-a-y-c M x Cu a M′ y X′ c (by atomic %), wherein M is Co and/or Ni, M′ is at...
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7470333 |
Non-oriented electrical steel sheet excellent in core loss and manufacturing method thereof
A non-oriented electrical steel sheet is characterized in that the number density of inclusions with an equivalent volume diameter of less than 100 nm contained in the steel sheet is 1×10 10 [/mm...
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RE40524 |
Magnet powder-resin compound particles, method for producing such compound particles and resin-bonded rare earth magnets formed therefrom
The magnet powder-resin compound particles substantially composed of rare earth magnet powder and a binder resin are in such a round shape that a ratio of the longitudinal size a to the transverse...
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7416795 |
Method for manufacturing magnetic metal powder, and magnetic metal powder
A method for manufacturing magnetic metal powder is provided. In the method, a powdered magnetic metal oxide is supplied to a heat treatment furnace with a carrier gas composed of a reducing gas....
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7381239 |
Alloy nano-particles
Disclosed are alloy nano-particles having a fluctuation coefficient of particle size of 20% or less and a fluctuation coefficient of composition of 20% or less. The alloy nano-particles have a low...
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7371271 |
Composite soft magnetic sintered material having high density and high magnetic permeability and method for preparation thereof
An object of the present invention is to provide a composite soft magnetic sintered material that has high density, high mechanical strength and high relative magnetic permeability at high...
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7267729 |
Soft magnetic low-carbon steel excellent in machinability and magnetic characteristic, method of manufacturing the same and method of manufacturing soft magnetic low-carbon part
A soft magnetic low-carbon steel has a chemical composition having a C content of 0.05% by mass or below, Si content of 0.1% or below, a Mn content in the range of 0.10 to 0.50% by mass, a P...
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7195680 |
Soft magnetic alloy for clock-making
The invention relates to a soft magnetic alloy with the following composition in wt. %: 28%≦Ni≦34%, 0%≦Co≦4%, 0%≦Cu≦4%, 1%≦Cr, 0%≦Mo≦8%, 0%≦Nb≦1%, 0%≦Mn≦2%, 0%≦V≦5%,...
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7192491 |
Increased damping of magnetization in magnetic materials
In order to dampen magnetization changes in magnetic devices, such as magnetic tunnel junctions (MTJ) used in high speed Magnetic Random Access Memory (MRAM), a transition metal selected from the ...
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7179338 |
Control of engineering processes using magnetostrictive alloy compositions
Magnetostrictive devices and methods involving a magnetostrictive alloy having; (1) one or more of Pd, and Pt, and (2) one or more of Ni, Co, Fe, where the alloy comprises one or more of Pd x Ni...
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7172642 |
Magnetic metal particles containing iron as main component, process for producing the same and magnetic recording medium using the same
Magnetic metal particles containing iron as a main component, comprising cobalt in an amount of usually 20 to 50 atm %, calculated as Co, based on whole Fe, aluminum in an amount of usually 3 to 15...
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7163592 |
Steel sheet for tension mask, manufacturing method of steel sheet for tension mask, tension mask and cathode ray tube
A steel sheet for a tension mask excellent in the shielding properties from geomagnetism consists essentially of lower than 0.1% by weight of C, lower than 0.2% by weight of Si, 0.4 to 2% by weight...
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7063754 |
Magnetic material for magnetic refrigeration and method for producing thereof
The magnetic material for magnetic refrigeration according to the present invention has an NaZn 13 -type crystalline structure and comprises iron (Fe) as a principal element (more specifically, Fe...
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7048809 |
Magnetic implement having a linear BH loop
Magnetic powder having a large coercivity, H c , is consolidated with a non-magnetic binder to form a magnetic implement having desired dimension and shape. The magnetic implement exhibits a linear...
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7045025 |
Grain-oriented electrical steel sheet excellent in magnetic properties and method for producing the same
A low core loss grain-oriented electrical steel sheet that does not have a significant deterioration in a magnetic flux density and a decrease of a space factor, and which may withstand...
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7041148 |
Coated ferromagnetic particles and compositions containing the same
High-permeability, low-core-loss soft magnetic composite materials, compositions containing the same, and methods for making the same are described. These magnetic materials are made by forming...
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7029769 |
Insulation film, powder for magnetic core and powder magnetic core and processes for producing the same
An insulation film whose requisite constituent elements are first elements and a second element. The first elements include B, P, O and Fe. The second element can generate cations whose...
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6942741 |
Iron alloy strip for voice coil motor magnetic circuits
An iron alloy strip having a gage of 0.1 to 5 mm and a magnetic field strength variation within the strip of 0 to 10 Hz, made of an iron alloy consisting essentially of, in % by weight,...
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6938324 |
Method of manufacturing a stator core
A motor stator core for achieving improved magnetizing feature in lower magnetic fields and reduced iron loss, and improving motor power. The stator core fabriated out of non-oriented electrical...
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6918966 |
Low iron loss and low noise grain-oriented electrical steel sheet and a method for producing the same
The object of the present invention is to provide a low iron loss and low noise grain-oriented electrical steel sheet for securing both low core loss and low noise of a transformer at the same...
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6852174 |
Powder magnetic core
There is disclosed a powder magnetic core in which a permeability does not easily drop even when an applied magnetic field intensifies, comprising: a bulk body containing a main component of a...
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6841271 |
Ferromagnetic iron alloy powder for magnetic recording medium and method of producing the same
A ferromagnetic iron alloy powder for a magnetic recording medium is composed of acicular iron-base particles of an average major axis length (X) of not less than 20 nm and not greater than 80 nm...
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6822831 |
Magnetic thin film, magnetic thin film forming method, and recording head
An object of the present invention is to provide a recording head having a magnetic pole simultaneously possessing a high saturation magnetic flux density, a high permeability and a high electric...
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6805980 |
Thin permanent-magnet film and process for producing the same
Refractory metal layers 2, 4, 6, 8 , and 10 , and rare earth alloy magnetic layers 3, 5, 7, 9, 11 , and 12 are alternately deposited, so as to form a multilayer structure including four or...
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6800146 |
Magnetic circuit member
A magnetic circuit member contains a matrix portion including iron and silicon; and graphite particles in the matrix. Each of the graphite particles has either a spherical shape or a compact...
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6797410 |
High tensile strength hot dip plated steel and method for production thereof
A steel composition, in which, Si content is regulated to a given range and Nb and Cu or Ni, Mo are compositively added, and a recrystallization annealing is carried out to form an internal oxide...
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6783608 |
Secondary agglomerates of magnetic metal particles for magnetic recording and process for producing the same
Secondary agglomerates of magnetic metal particles for magnetic recording, have a sodium content of not more than 20 ppm and a calcium content of not more than 40 ppm, an average particle diameter...
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6758915 |
Grain oriented electromagnetic steel sheet exhibiting extremely small watt loss and method for producing the same
The invention is a grain-oriented magnetic steel sheet having extremely low iron loss, suitable for use as an iron core material for transformers and power generators, and a method for producing...
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6743304 |
Non-oriented electrical steel sheet with ultra-high magnetic flux density and production method thereof
The present invention provides a non-oriented electrical steel sheet having ultra-high magnetic flux density and low core loss, characterized by: comprising a steel containing, in terms of wt %, ...
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6723179 |
Soft magnetism alloy powder, treating method thereof, soft magnetism alloy formed body, and production method thereof
A soft magnetism metal powder having a majority of particles, each of which, when cross-sectioned, has no greater than ten crystal particles on average, may be coated on an outer surface of each of...
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6699579 |
Particulates of controlled dimension
We make particulates, especially magnetic Fe—Co alloys having high magnetic permeability, of controlled dimensions, especially those having a narrow thickness size distribution centered around a...
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6676772 |
Magnetic material
The magnetic material for magnetic refrigeration of the present invention is characterized by exhibiting, in a certain temperature region, preferably, only in part of a temperature region from 200...
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6666930 |
FePt magnet and manufacturing method thereof
The present invention offers a minute-sized magnet with superior magnetic energy product (BH) max and coercivity iHc, as well as superior anti-corrosive properties. This magnet is comprised of an...
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6646532 |
Powder core and reactor using the same
Preparation is made of alloy powder comprising 3.0-8.0 wt % Si, 0.1-1.0 wt % O, 0-2.0 wt % (0 being exclusive) of at least one element selected from Mn, Al, V, Cr, and Ti, and balance Fe and having...
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6599376 |
FE-CR soft magnetic material and a method of manufacturing thereof
A Fe-Cr soft magnetic material has electric resistivity not less than 50 μΩ·cm and a metallurgical structure occupied by a ferrite phase at a surface ratio of 95% or more. A number of fine...
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6569265 |
Electrical steel with improved magnetic properties in the rolling direction
A method of making electrical steel strip characterized by low core loss and high permeability in the rolling direction includes the steps of: hot rolling a slab of an electrical steel composition...
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6566796 |
Steel sheet for tension mask, making method thereof and tension mask
A method of making a steel sheet for a tension mask, including the steps of: hot rolling a steel consisting essentially of, by weight %, C: less than 0.1%, Si: 0.05% or less, Mn: 0.4 to 2%, P:...
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6563411 |
Current transformer with direct current tolerance
A current transformer for alternating current with direct current components is proposed, consisting of at least one transformer core with a primary winding and at least one secondary winding to...
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6562150 |
Steel sheet for heat shrink band and manufacturing method thereof
A steel sheet for heat shrink band of the present invention has anhysteretic magnetic permeability of 15,000 or higher at 0.35 Oe and yield stress of 24 kgf/mm 2 or more. The steel sheet can be...
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6562473 |
Electrical steel sheet suitable for compact iron core and manufacturing method therefor
Electrical steel sheets having superior magnetic properties, anti-noise properties, and workability, are ideal for use a compact iron core material in electric apparatuses, such as compact...
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