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Class 148/105 - Particulate material


Subclass of Class 148 - Metal treatment
Definition: Processes wherein the material is in particulate form at
No. of patents: 374
Last issue date: 03/06/2012


1                    
NumberTitleIssue Date
8128757Method of manufacturing oriented body, molded body and sintered body as well as method of manufacturing permanent magnet
There is provided a method of manufacturing a permanent magnet having extremely high orientation by arranging such that the crystal fractures of alloy raw meal powder having more equal crystal orientational relationship are combined in magnetic field. In this invent...
03/06/2012
7976643Production method for nanocomposite magnet
A nanocomposite magnet containing an Fe particle in the grain boundary of an Nd2Fe14B compound particle is produced by mixing a dispersion of the Nd2Fe14B compound particle in a solvent containing a surface-active agent an...
07/12/2011
7931756Method and machine of making rare-earth alloy granulated powder and method of making rare-earth alloy sintered body
A method of making a rare-earth alloy granulated powder according to the present invention includes the steps of: preparing a rare-earth alloy powder; generating remnant magnetization in the powder; and granulating the powder by utilizing agglomeration force produce...
04/26/2011
RE40524Magnet 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 size b (a/b) is more than 1.00 and 3 or less, and that an average par...
09/30/2008
7390567Soft magnetic composite powder comprising an inorganic insulating coating, production method of the same, and production method of soft magnetic compact
A soft magnetic compact which is produced by using soft magnetic composite powder in which the surface of magnetic powder is covered with an electrical insulating material containing at least an inorganic insulating material, and a resin material is fusion-bonded to...
06/24/2008
7371271Composite 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 frequencies and, in order to achieve this object, the present invention provi...
05/13/2008
7357880Composite rare-earth anisotropic bonded magnet, composite rare-earth anisotropic bonded magnet compound, and methods for their production
The bonded magnet of the present invention, in which average particle diameter and compounding ratio are specified, is comprised of Cobalt-less R1 d-HDDR coarse magnet powder that has been surface coated with surfactant, R2 fine magnet powder that has been surface c...
04/15/2008
7357980Nonmagnetic powder comprising acicular iron and having specific porosity for a magnetic recording medium, method of manufacturing same, and magnetic recording medium using same
A nonmagnetic powder, used for the nonmagnetic layer of a coated type magnetic recording medium having a multilayer structure, has good dispersibility in the binder in which it is dispersed to prepare a coating material that is applied to the nonmagnetic layer. The ...
04/15/2008
7273405Sintered rare earth magnetic alloy wafer and wafer surface growing machine
A method of producing a sintered rare earth magnetic alloy wafer comprises a step of using a cutter to slice a wafer of a thickness of not greater than 3 mm from a sintered rare earth magnetic alloy having ferromagnetic crystal grains surrounded by a more readily gr...
09/25/2007
7270718Method for manufacturing a soft magnetic powder material
The invention provides a method for manufacturing a soft magnetic powder material covered by oxide layers at surfaces of the powder, by using a soft magnetic alloy powder containing a soft magnetic powder material and a second element such as Si having an oxidizing ...
09/18/2007
7264683Centrifugal casting method, centrifugal casting apparatus, and cast alloy produced by same
The present invention relates to a casting method which employs rapid solidification of metal, rare-earth metal or the like, as well as to a casting apparatus and a cast alloy. A centrifugal casting method includes the steps of pouring a molten material onto a rotar...
09/04/2007
7261781Nanocomposite magnet
A nanocomposite magnet has a composition represented by (Fe1-mTm)100-x-y-z-nQxRyTizMn, where T is at least one of Co and Ni, Q is at least one of B and C, R is at least one rare earth eleme...
08/28/2007
7244287Magnetic particle, its production method, magnetic recording medium and its production method
The present invention relates to a method of producing a magnetic particle including forming a layer containing an alloy particle that can form a CuAu-type or Cu3Au-type hard magnetic ordered alloy phase on a support, oxidizing the layer, and annealing th...
07/17/2007
7241725Barrier polishing fluid
The polishing fluid is useful for polishing tantalum-containing barrier materials of a semiconductor substrate. The polishing fluid includes a nitrogen-containing compound having at least two nitrogen atoms comprising imine compounds and hydrazine compounds. The nit...
07/10/2007
7238439Magnetic recording medium containing particles with a core containing a FeNphase
A magnetic recording medium comprising a nonmagnetic support and a magnetic layer formed on the support and containing a magnetic powder and a binder, wherein said magnetic powder comprises substantially spherical or ellipsoidal particles and at least one element se...
07/03/2007
7238297Composition of matter tailoring: system I
The present invention relates to new compositions of matter, particularly metals and alloys, and methods of making such compositions. The new compositions of matter exhibit long-range ordering and unique electronic character. ...
07/03/2007
7230514Inductive component and method for producing same
Inductive component (10; 20; 30) having at least one coil (12; 22; 32) and a magnetically soft core (11; 21; 31) made from a ferromagnetic powder composite in which the ferromagnetic powder composite shows an alloy powder mixture made from alloy...
06/12/2007
7229485Plasma reduction processing of materials
In a process for the reduction of a metalliferous ore or concentrate the ore or concentrate is first prepared into a particulate form. A reaction chamber (3, 103, 203, 301, 401, 503, 603, 702) is then charged with ore or concentrate, a reductant and an input ...
06/12/2007
7211158Production method for powdered core
The present invention provides a production method for a powdered core, including steps of preparing a mixture including a soft magnetic powder and a resin powder to obtain a mixture, compacting the mixture into a predetermined shape to obtain a green compact and he...
05/01/2007
7208204Thin film magnetic recording media
A method and apparatus for forming a thin film magnetic recording media, the method comprises generating magnetic nanoclusters from a target of magnetic material, crystallizing the magnetic nanoclusters, and depositing the magnetic nanoclusters onto a substrate to f...
04/24/2007
7208097Iron-based rare earth alloy nanocomposite magnet and method for producing the same
An iron-based rare earth alloy nanocomposite magnet has a composition represented by (Fe1-mTm)100-x-y-zQxRyTiz, where T is Co and/or Ni, Q is B and/or C and R is rare earth element(s) including substa...
04/24/2007
7208134Bioprocesses enhanced by magnetic nanoparticles
One aspect of the present invention relates to magnetic nanoparticles colloidally stabilized in aqueous milieu by association with an organic phase. The organic phase may be either a fluorinated polymer or an organic hydrocarbon bilayer, wherein the two layers are c...
04/24/2007
7201810Rare earth alloy sintered compact and method of making the same
A rare earth alloy sintered compact includes a main phase represented by (LR1-xHRx)2T14A, where T is Fe with or without non-Fe transition metal element(s); A is boron with or without carbon; LR is a light rare earth elemen...
04/10/2007
7195661Magnetic material
Magnetic materials having a coercivity not less than about 1000 Oersted are prepared in a single step procedure. A molten mixture of a desired composition having a relatively high boron content is cooled at a rate slower than about 105 degrees Celsius per...
03/27/2007
7186303Magnetic alloy material and method of making the magnetic alloy material
A method of making a magnetic alloy material includes the steps of: preparing a melt of an alloy material having a predetermined composition; rapidly cooling and solidifying the melt to obtain a rapidly solidified alloy represented by: Fe100-a-b-cREa...
03/06/2007
7179340Rare-earth magnet and manufacturing method thereof and magnet motor
The object of the present invention is to provide a rare earth magnet which enables to achieve a good balance between high coercive force and high residual magnetic flux density, and its manufacturing method. The present invention provides a rare earth magnet in whi...
02/20/2007
7179337Method for producing a soft magnetic material
The invention provides a method for preparing a soft magnetic material which meets demands for low iron loss, high density, high strength and high productivity. The method comprises a surface oxidation step of forming oxide films on the surfaces of a soft magnetic p...
02/20/2007
7175717Method for making nano-scale grain metal powders having excellent high-frequency characteristic and method for making high-frequency soft magnetic core using the same
A method for making a nano-scale amorphous soft magnetic powders obtained by thermally processing and crystallizing amorphous ribbons produced using a rapid solidification process (RSP) and crushing the same. The amorphous soft magnetic core having an excellent high...
02/13/2007
7172660Method for making Fe-based amorphous metal powders and method for making soft magnetic core using the same
A method for making an amorphous soft magnetic core using Fe-based amorphous metal powders is provided. The amorphous soft magnetic powders are obtained by crushing amorphous ribbons produced using a rapid solidification process (RSP). The magnetic core is obtained ...
02/06/2007
7172642Magnetic 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 atm %, calculated as Al, based on whole Fe and a rare earth element ...
02/06/2007
7166171Longitudinal magnetic field compacting method and device for manufacturing rare earth magnets
Disclosed is a longitudinal magnetic field compacting method and device for manufacturing a neodymium (Nd) based rare earth magnet in the shape of a butterfly for use in VCM of HDD or DVD, a disk or coin for use in coreless motors, and a block for use in linear moto...
01/23/2007
7166172Method of making ferromagnetic iron alloy powder for magnetic recording medium
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 and have oxygen content of not less than 15 wt % and coercive force (H...
01/23/2007
7167140Coil antenna
A coil antenna having a magnetic core and a wire wound around the magnetic core. The magnetic core is flexible and bendable and is made of a mixture including soft magnetic powder and an organic binder agent. The soft magnetic powder comprises a plurality of particl...
01/23/2007
7163591Method of preparing micro-structured powder for bonded magnets having high coercivity and magnet powder prepared by the same
Disclosed is a method of preparing a micro-structured powder for bonded magnets having high coercivity, which is advantageous in terms of low preparation costs by recycling magnet scraps, simplified mass production, minimal environmental contamination by such a recy...
01/16/2007
7160398Method of making rapidly solidified alloy for magnet
A melt of an alloy, represented (Fe1-mTm)100-x-y-zQxRyMz, where T is Co and/or Ni, Q is B and/or C, R is at least one rare-earth element, M is selected from Al, Si, Ti, V, Cr, Mn, Cu, Zn, Ga, Zr, Nb, ...
01/09/2007
7144642Permanent magnet and method for preparation thereof
A ferrite magnet obtained by adding a ferrite having a hexagonal W-type magnetoplumbite structure to a ferrite having a hexagonal M-type magnetoplumbite structure, in which a portion of Sr, Ba, Pb or Ca is replaced with at least one element that is selected from the...
12/05/2006
7144463Highly quenchable Fe-based rare earth materials for ferrite replacement
The present invention relates to highly quenchable Fe-based rare earth magnetic materials that are made by rapid solidification process and exhibit good magnetic properties and thermal stability. More specifically, the invention relates to isotropic Nd—Fe—B type...
12/05/2006
7144468Method of constructing a unitary amorphous metal component for an electric machine
A unitary amorphous metal magnetic component for an axial flux electric machine such as a motor or generator is formed from a spirally wound annular cylinder of ferromagnetic amorphous metal strips. The cylinder is adhesively bonded and provided with a plurality of ...
12/05/2006
7138018Process for producing anisotropic magnet powder
A method for manufacturing an anisotropic magnet powder includes a high-temperature hydrogenation process of holding an RFeB-based alloy containing rare earth elements (R), B and Fe as main ingredients in a treating atmosphere under a first treating pressure (P1
11/21/2006
7128986Nanoclustered magnetic materials for high moment write pole applications
The present invention includes magnetic write elements with portions formed a nanophase high magnetic moment material to enable further increases in areal density in magnetic recording. The nanophase deposited high magnetic moment material comprises coated nanoclust...
10/31/2006
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