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7622010 Method and apparatus for producing granulated powder of rare earth alloy and method for producing rare earth alloy sintered compact  
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 remanent magnetization in the...
7608153 Rare earth magnet and method therefor  
A rare earth magnet includes rare earth magnet particles; and amorphous and/or crystalline terbium oxide present at the boundary of the rare earth magnet particles and represented by the formula:...
7585378 Methods for producing raw material alloy for rare earth magnet, powder and sintered magnet  
A method of making a material alloy for an R-T-Q based rare-earth magnet according to the present invention includes the steps of: preparing a melt of an R-T-Q based rare-earth alloy, where R is...
7578892 Magnetic alloy material and method of making the magnetic alloy material  
A magnetic alloy material according to the present invention has a composition represented by Fe 100-a-b-c RE a A b Co c , where RE is a rare-earth element always including La, A is either Si or...
7563330 Magnetic material and manufacturing method thereof  
A powder raw material is prepared by mixing at least two kinds of powders selected from a powder A, a powder B, a powder C, and a powder D. A sintered body of a magnetic material having an NaZn 13 ...
7520941 Functionally graded rare earth permanent magnet  
A functionally graded rare earth permanent magnet is in the form of a sintered magnet body having a composition R 1 a R 2 b T c A d F e O f M g wherein the concentration of R 2 /(R 1 +R 2 )...
7507302 Method for producing nanocomposite magnet using atomizing method  
A rare-earth alloy powder is obtained by rapidly cooling a melt of an alloy by an atomization process. The alloy has a composition represented by (Fe 1-m T m ) 100-x-y-z Q x R y Ti z M n , where T...
7488394 Rare earth permanent magnet  
A rare earth permanent magnet is in the form of a sintered magnet body having a composition R 1 a R 2 b T c A d F e O f M g wherein F and R 2 are distributed such that their concentration...
7481895 Isotropic powdery magnet material, process for preparing and resin-bonded magnet  
Disclosed is an isotropic SmFeN powdery magnet material for producing resin-bonded magnets. The magnet powder is prepared by melt-spinning of a molten alloy and nitriding the alloy powder thus...
7470334 Method for preparing sintered product, sintered product and magnetostriction material  
A method for manufacturing a sintered compact includes the steps of preparing an alloy powder having a composition represented by Expression 1: RT W (where, R is at least one kind of rare earth...
7465363 Hard magnetic composition, permanent magnet powder, method for permanent magnet powder, and bonded magnet  
A single phase consisting of a ThMn 12 phase can be obtained by having the composition thereof represented by a general formula R(Fe 100-y-w Co w Ti y ) x Si z A v (in the general formula, R is...
7438768 Rare earth element sintered magnet and method for producing rare earth element sintered magnet  
Hydrogen embrittlement is prevented in Sm 2 Co 17 -based magnets and R 2 Fe 14 B-based magnets by metal plating the magnet, then carrying out heat treatment, or by forming a metal oxide or metal...
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...
7410705 Rare earth-transition metal alloy articles  
A phosphate bonded ceramic is used to provide a protective coating on a rare earth-transition metal (RE-TM) alloy substrate, conferring degradation resistance to the alloy by being oxidation...
7396419 ***WITHDRAWN PATENT AS PER THE LATEST USPTO WITHDRAWN LIST***
Method for preparing sintered product, sintered product and magnetostriction material  
A method for manufacturing a sintered compact includes the steps of preparing an alloy powder having a composition represented by Expression 1: RT W (where, R is at least one kind of rare earth...
RE40348 Arc segment magnet, ring magnet and method for producing such magnets  
A thin arc segment magnet made of a an R- T - B based, rare earth sintered magnet substantially comprising 28-33 weight % of R and 0.8-1.5 weight % of B, the balance being substantially Fe ...
7316752 R-T-B-C based rare-earth magnetic powder and bonded magnet  
The step of preparing a rapidly solidified alloy by rapidly quenching a melt of an R-T-B-C based rare-earth alloy (where R is at least one of the rare-earth elements including Y, T is a transition...
7309396 Giant magnetostrictive material and heat treatment method for giant magnetostrictive material  
Restoring magnetostriction characteristics without causing fusion of rod. By performing heat treatment on a giant magnetostrictive material within the temperature range of 750 to 860° C., working...
7297213 Permanent magnet including multiple ferromagnetic phases and method for producing the magnet  
An iron-based rare earth alloy magnet has a composition represented by the general formula: (Fe 1-m T m ) 100-x-y-z Q x R y M z , where T is at least one element selected from the group consisting...
7261781 Nanocomposite magnet  
A nanocomposite magnet has a composition represented by (Fe 1-m T m ) 100-x-y-z-n Q x R y Ti z M n , 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...
7255830 Method of making a three-dimensional sintered product  
To make a three-dimensional object, an optical beam is first irradiated on a predetermined portion of a powder layer to form a sintered layer, which is then covered with a new powder layer. The...
7232495 Method of magnetizing rare-earth magnet and rare-earth magnet  
The method of the present invention includes a step of preparing a rare earth magnet 22 disposed for forming a cylinder 22 a , a first magnetizing step of applying a first external magnetic...
7217328 Compound for rare-earth bonded magnet and bonded magnet using the compound  
A compound for a rare-earth bonded magnet includes a rare-earth alloy powder and a binder. The rare-earth alloy powder includes at least about 2 mass % of Ti-containing nanocomposite magnet powder...
7186303 Magnetic 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...
7179340 Rare-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...
7179339 Terbium-dysprosium-iron magnetostrictive materials and devices using these materials  
A terbium-dysprosium-iron magnetostrictive material of the type Tb 1-x Dy x Fe 2-y wherein x is less than 0.7, and y is less than or equal to 0.1, and devices using these materials.
7147686 Rare earth magnet, method for manufacturing the same, and motor using rare earth magnet  
A rare earth magnet comprises rare earth magnet particles and a rare earth oxide being present between the rare earth magnet particles. The rare earth oxide is represented by a following general...
7114340 Method of making active magnetic refrigerant materials based on Gd-Si-Ge alloys  
An alloy made of heat treated material represented by Gd 5 (Si x Ge 1−x ) 4 where 0.47≦x≦0.56 that exhibits a magnetic entropy change (−ΔS m ) of at least 16 J/kg K, a magnetostriction of...
7076958 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...
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...
6984271 Rare earth magnet, process for producing same, and motor using rare earth magnet  
A rare earth magnet to be used in a motor. The rare earth magnet comprises rare earth magnet particles. Additionally, a rare earth oxide is present among the rare earth magnet particles, the rare...
6864793 Magnetic marker and manufacturing method therefor  
A magnetic marker comprises a magnetically switchable wire and a magnetic casing that covers the magnetically switchable wire. The magnetically switchable wire is formed of a magnetic material that...
6830635 Spindle-shaped goethite particles, spindle-shaped hematite particles, spindle-shaped magnetic metal particles containing iron as main component and processes for producing the same  
The present invention relates to spindle-shaped goethite particles having an average major axial diameter of 0.05 to 0.18 μm, spindle-shaped hematite particles having an average major axial...
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...
6726781 High temperature permanent magnets  
A permanent magnet is provided which retains its magnetic properties and exhibits a linear extrinsic demagnetization curve at elevated temperatures up to 700° C. The magnet is represented by the...
6708388 Method of making a permanent magnet field-type compact DC motor  
A permanent magnet field-type compact DC motor having a high output and a low cogging torque is made by fixing a pair of rare earth magnets mainly composed of rare earth-iron-based rapidly quenched...
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...
6660178 Magnetic powder and bonded magnet  
Disclosed herein is a magnetic powder which can provide a bonded magnet having high mechanical strength and excellent magnetic properties. The magnetic powder has an alloy composition containing a...
6627313 Spindle-shaped magnetic metal particles containing iron as main component and processes for producing the same  
Spindle-shaped magnetic metal particles containing iron as a main component of the present invention, have an average major axis diameter (L) of 0.05 to 0.15 μm; a coercive force of 111.4 to 143.2...
6621398 Magnetic core comprising a bond magnet including magnetic powder whose particle's surface is coated with oxidation-resistant metal  
Disposed in a magnetic gap of a magnetic core, a magnetically biasing permanent magnet is a bond magnet comprising rare-earth magnetic powder and a binder resin. The rare-earth magnetic powder has...
6607612 Magnetic alloy and magnetic recording medium and method for preparation thereof, and target for forming magnetic film and magnetic recording device  
The magnetic alloy includes cobalt (Co), chromium (Cr), and germanium (Ge), the composition of the magnetic alloy being represented by the general formula: Co x Cr y Ge z where x, y and z, which...
6606578 System and method for electromagnetic propulsion fan  
An electromagnetic propulsion fan includes a hub and a plurality of fan blades coupled to the hub. The electromagnetic propulsion fan also includes a rim coupled to the fan blades such that...
6592682 Method for preparing a magnetic material by forging and magnetic material in powder form  
The invention concerns a method for preparing a magnetic material by forging, characterised in that, in a first embodiment, it comprises the following steps; placing in a sheath an alloy based on...
6590485 Magnetic core having magnetically biasing bond magnet and inductance part using the same  
A magnetic core having excellent DC superposition characteristics and core-loss characteristics is provided. The magnetic core comprises a magnetically biasing magnet disposed in a magnetic gap...
6589366 Method of making active magnetic refrigerant, colossal magnetostriction and giant magnetoresistive materials based on Gd-Si-Ge alloys  
Method of making an active magnetic refrigerant represented by Gd 5 (Si x Ge 1−x ) 4 alloy for 0≦x≦1.0 comprising placing amounts of the commercially pure Gd, Si, and Ge charge components in...
6558481 Method of controlling properties of a ferromagnetic samarium substance a ferromagnetic material and a spin resolving device  
An appropriate ferromagnetic substance, whose magnetization arises mainly from samarium, is selected, and the composition of this ferromagnetic samarium substance is, according to necessity,...
6537463 Resin-bonded magnet, its product, and ferrite magnet powder and compound used therefor  
A resin-bonded magnet composed substantially of (a) an R—T—N-based magnetic powder having a basic composition of R α T 100−α−β N β , wherein R is at least one selected form the group...
6536507 Cooling roll, method for manufacturing magnet material, ribbon shaped magnet material, magnetic powder and bonded magnet  
A cooling roll ( 5 ) for producing magnet materials, comprising a roll base material ( 51 ) and a surface layer ( 52 ) covering the outer periphery of the material, wherein the roll base material (...
6527874 Rare earth magnet and method for making same  
A rapidly solidified alloy is produced by quenching and solidifying a melt of an alloy having a general formula represented by (Fe 1-m T m ) 100-x-y-z Q x R y M z where T denotes at least one kind...
6517934 Magnetic recording medium containing nanometer-size substantially spherical or ellipsoidal fe-b-re magnetic powder and method for producing magnetic powder  
A rare earth-iron-boron magnetic powder comprising a rare earth element, iron and boron, which has a coercive force of 80 to 400 kA/m, a saturation magnetization of 10 to 25 μW/g, an average...
Matches 1 - 50 out of 259 1 2 3 4 5 6 >