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US20060054245 Nanocomposite permanent magnets  
A nanocomposite, rare earth permanent magnet comprising at least two rare earth- or yttrium-transition metal compounds. The nanocomposite, rare earth permanent magnet can be used at operating...
US20140290803 RARE EARTH BASED MAGNET  
The present invention provides a rare earth based magnet including R2T14B main-phase crystal grains, and two-grain boundary phases between adjacent two R2T14B main-phase crystal grains, the...
US20120024429 RARE EARTH SINTERED MAGNET  
A rare earth sintered magnet includes a main phase that includes an R2T14B phase of crystal grain where R is one or more rare earth elements including Nd, T is one or more transition metal...
US20070089806 Powders for rare earth magnets, rare earth magnets and methods for manufacturing the same  
A powder consists essentially by weight, of 28.00≦R≦32.00%, where R is at least one rare earth element including Y and the sum of Dy+Tb>0.5, 0.50≦B≦2.00%, 0.50≦Co≦3.50%, 0.050≦M≦0.5%, where M is...
US20140326363 R-T-B-BASED RARE EARTH MAGNET PARTICLES, PROCESS FOR PRODUCING THE R-T-B-BASED RARE EARTH MAGNET PARTICLES, AND BONDED MAGNET  
The present invention provides R-T-B-based rare earth magnet particles comprising no expensive rare resources such as Dy and having an excellent coercive force which can be produced by HDDR...
US20080223489 RARE EARTH PERMANENT MAGNET AND ITS PREPARATION  
A rare earth permanent magnet is prepared by disposing a powdered metal alloy containing at least 70 vol % of an intermetallic compound phase on a sintered body of R—Fe—B system, and heating the...
US20110079327 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...
US20110000586 RARE EARTH MAGNET AND ITS PREPARATION  
A rare earth magnet is prepared by disposing a R1-T-B sintered body comprising a R12T14B compound as a major phase in contact with an R2-M alloy powder and effecting heat treatment for causing R2...
US20140266525 R-T-B-BASED RARE EARTH MAGNET PARTICLES, PROCESS FOR PRODUCING THE R-T-B-BASED RARE EARTH MAGNET PARTICLES, AND BONDED MAGNET  
An object of the present invention is to enhance a coercive force of magnetic particles by promoting formation of a continuous R-rich grain boundary phase in a crystal grain boundary of a magnetic...
US20150243415 Method for manufacturing NdFeB rare earth permanent magnet containing Ce  
A method for manufacturing a NdFeB rare earth permanent magnet containing Ce whose raw material includes a Ce-LR-Fe—B-Ma alloy, a Ce-HR-Fe—B-Mb alloy, and metallic oxide micro-powder; wherein the...
US20130069746 Sintered Magnet  
Disclosed is a sintered magnet which is a rare-earth magnet using a less amount of a rare-earth element but having a higher maximum energy product and a higher coercivity. The sintered magnet...
US20120247624 RARE EARTH MAGNET AND MANUFACTURING METHOD THEREFOR  
A rare earth magnet of the invention has a composition represented by the compositional formula RaHbFecCodBeMf, where: R is at least one rare earth element including Y;H is at least one heavy rare...
US20060005898 Anisotropic nanocomposite rare earth permanent magnets and method of making  
A bulk, anisotropic, nanocomposite, rare earth permanent magnet. Methods of making the bulk, anisotropic, nanocomposite, rare earth permanent magnets are also described.
US20070095438 R-T-B type alloy, production method of R-T-B type alloy flake, fine powder for R-T-B type rare earth permanent magnet, and R-T-B type rare earth permanent magnet  
An R-T-B type alloy (wherein R is at least one member selected from rare earth elements, T is a transition metal including Fe, and B includes boron) which is a raw material for use in a rare...
US20050247376 Magnetic materials containing praseodymium  
A magnetic material containing praseodymium has the ternary alloy PrFeB as the primary component. Through an appropriate adjustment of composition, the magnetic material has both high remanent...
US20140000763 MAGNETIC MATERIAL  
In a magnetic material, a magnet powder and an amorphous metal are used as ingredients. The magnet powder is neodymium-iron-boron magnet powder. The amorphous metal contains a rare-earth element,...
US20060016515 Sinter magnet made from rare earth-iron-boron alloy powder for magnet  
A rare-earth-iron-boron based alloy powder, in which a heavy rare-earth element such as Dy is present at a higher concentration in a main phase than in a grain boundary phase and which can be...
US20130160896 CERIUM BASED PERMANENT MAGNET MATERIAL  
Useful permanent magnet materials are formed by processing molten alloys of cerium, iron, and boron to form permanent magnet compositions with appreciable coercivity and remanence. For example,...
US20130265128 R-T-B-BASED RARE EARTH MAGNET PARTICLES, PROCESS FOR PRODUCING THE R-T-B- BASED RARE EARTH MAGNET PARTICLES, AND BONDED MAGNET  
R-T-B-based rare earth magnet particles are produced by an HDDR treatment which comprises a first stage HD step of heating particles of a raw material alloy having a composition of R, B and Co in...
US20060137767 Nd-Fe-B rare earth permanent magnet material  
A rare earth permanent magnet material is based on an R—Fe—Co—B—Al—Cu system wherein R is at least one element selected from Nd, Pr, Dy, Tb, and Ho, 15 to 33% by weight of Nd being contained. At...
US20090178735 RARE EARTH SINTERED MAGNET  
The present invention provides a technique to improve an adhesion strength between a magnet main body and a protective film. The rare earth sintered magnet of the present invention comprises a...
US20150248954 High-performance NdFeB rare earth permanent magnet with composite main phase and manufacturing method thereof  
A NdFeB rare earth permanent magnet with composite main phase and a manufacturing method thereof are provided. In the composite main phase, a PR2(Fe1-x-yCoxAly)14B main phase is the core,...
US20070137733 Mixed rare-earth based high-coercivity permanent magnet  
A system and method for a permanent magnet, having boron, iron, and a rare-earth material. The rare-earth material includes neodymium, at least 50 weight percent praseodymium, 0-20 weight percent...
US20120048431 RARE-EARTH PERMANENT MAGNET AND PRODUCTION PROCESS FOR THE SAME  
HfC particles having an average particle size of 5 to 100 nm are dispersed in an R—Fe—B type alloy in an amount of 0.2 to 3.0 atom %. Crystal grains are refined avoiding decreasing an amount of...
US20070199624 Process For Producing Alloy Slab For Rare-Earth Sintered Magnet, Alloy Slab For Rare-Earth Sintered Magnet And Rare-Earth Sintered Magnet  
The invention provides a method for producing alloy flakes for rare earth sintered magnets, which makes uniform the intervals, size, orientation, and shape of the R-rich region and the dendrites...
US20070240790 Rare-earth sintered magnet and method for producing the same  
A rare-earth sintered magnet according to the present invention includes: 28.5 mass % to 32.0 mass % of R, which includes Tb and at least one of the other rare-earth elements; 0.91 mass % to 1.15...
US20090020193 RARE EARTH SINTERED MAGNET AND PROCESS FOR PRODUCING THE SAME  
In a process of producing an R—Fe—B based rare-earth sintered magnet, first, an R—Fe—B based sintered magnet, including, as a main phase, R2Fe14B type compound crystal grains with a light...
US20070125452 R-T-B-C rare earth sintered magnet and making method  
An R-T-B—C rare earth sintered magnet (R═Ce, Pr, Nd, Tb, or Dy; T=Fe) is obtained by mixing an R-T-B—C magnet matrix alloy with an R fluoride and an R-rich R-T-B—C sintering aid alloy, followed by...
US20060191601 Permanent magnet type electric rotating machine  
A permanent magnet type electric rotating machine having a high resistance permanent magnet used for the electric rotating machine, the permanent magnet containing a magnetic powder and a fluorine...
US20090218012 MATERIAL FOR MAGNETIC ANISOTROPIC MAGNET  
A material for magnetic anisotropic magnet, comprising (1) a Pr-T-B—Ga-based composition containing Pr: 13.0 to 15.0 atomic percent, B: 4.5 to 6.5 atomic percent, Ga: 0.1 to 0.7 atomic percent,...
US20050268989 R-t-b sintered magnet and process for producing the same  
An R-T-B based sintered magnet with a reduced B concentration but with sufficiently high coercivity is provided. An R-T-B based sintered magnet according to the present invention has a composition...
US20050098239 R-T-B based permanent magnet material alloy and R-T-B based permanent magnet  
An R-T-B based permanent magnet material alloy according to the present invention is an alloy in the shape of a thin plate including R2T14B columnar crystals and R-rich phases (where R is at least...
US20100200121 PROCESS FOR PRODUCING ALLOY SLAB FOR RARE-EARTH SINTERED MAGNET, ALLOY SLAB FOR RARE-EARTH SINTERED MAGNET AND RARE-EARTH SINTERED MAGNET  
The invention provides a method for producing alloy flakes for rare earth sintered magnets, which makes uniform the intervals, size, orientation, and shape of the R-rich region and the dendrites...
US20090223606 IRON-BASED RARE-EARTH NANOCOMPOSITE MAGNET AND METHOD FOR PRODUCING THE MAGNET  
The iron-based rare-earth nanocomposite magnet of the present invention has a composition T100-x-y-z-nQxRyTizMn, where T is Fe or a transition metal element in which Fe is partially replaced by Co...
US20110186181 CORROSION-RESISTANT MAGNET AND METHOD FOR PRODUCING THE SAME  
An object of the present invention is to provide an R—Fe—B based sintered magnet having on a surface thereof a chemical conversion film with higher corrosion resistance than a conventional...
US20090032147 R-Fe-B MICROCRYSTALLINE HIGH-DENSITY MAGNET AND PROCESS FOR PRODUCTION THEREOF  
An R—Fe—B based rare-earth alloy powder with a mean particle size of less than about 20 μm is provided and compacted to make a powder compact. Next, the powder compact is subjected to a heat...
US20050183791 Method for producing sintered magnet and alloy for sintered magnet  
The present invention provides a method for producing a sintered magnet, which can have a sufficient sintered density even when the magnet has a low-R composition. The method is for producing a...
US20070034299 Rare earth - iron - bron based magnet and method for production thereof  
[Object] To provide a high-performance rare earth-based magnet exhibiting a high coercive force or a high residual magnetic flux density even when the content of a rare earth element such as Dy or...
US20150243416 Method for manufacturing high-performance NdFeB rare earth permanent magnetic device  
A method for manufacturing a high-performance NdFeB rare earth permanent magnetic device which is made of an R—Fe—Co—B-M strip casting alloy, a micro-crystal HR—Fe alloy fiber, and TmGn compound...
US20100172783 Material for Anisotropic Magnet and Method of Manufacturing the same  
A material for anisotropic magnet, comprising, (1) a Pr-T-B—Ga-based composition containing Pr: 12.5 to 15.0 atomic percent, B: 4.5 to 6.5 atomic percent, Ga: 0.1 to 0.7 atomic percent, and the...
US20070200464 HYBRID PERMANENT MAGNET TYPE ELECTRIC ROTATING MACHINE AND MANUFACTURING METHOD THEREOF  
A stator is constructed by winding excitation coils around respective main poles. A rotor is constructed by fixing a first rotor unit, which consists of a pair of rotor cores and a magnetic...
US20050268993 Permanent magnet alloy with improved high temperature performance  
A permanent magnet material is provided and includes a major phase represented by MRE2Tr14X wherein MRE comprises Y and at least one other rare earth element with Y being present as 15% or more of...
US20050217758 Rare earth sintered magnet and method for production thereof  
A rare-earth sintered magnet with excellent corrosion resistance and sinterability and a method for producing such a magnet are provided. The rare-earth sintered magnet includes an R2T14Q type...
US20070199623 R-Fe-B Based Thin Film Magnet And Method For Preparation Thereof  
An R—Fe—B based thin film magnet including an R—Fe—B based alloy which contains 28 to 45 percent by mass of R element (where R represents at least one type of rare-earth lanthanide elements) and...
US20100252145 METHOD FOR PRODUCING SURFACE-MODIFIED RARE EARTH METAL-BASED SINTERED MAGNET AND SURFACE-MODIFIED RARE EARTH METAL-BASED SINTERED MAGNET  
An objective of the present invention is to provide a rare earth metal-based sintered magnet having imparted thereto sufficient corrosion resistance by an oxidative heat treatment, which is...
US20100051140 PERMANENT MAGNET AND METHOD OF MANUFACTURING SAME  
By causing at least one of Dy and Tb to be adhered to the surface of an iron-boron-rare earth based sintered magnet of a predetermined shape, and is then to be diffused into grain boundary phase,...
US20070131309 Nano-composite magnet, quenched alloy for nano-composite magnet, and method for producing them and method for distinguishing them  
A nanocomposite magnet according to the present invention has a composition represented by the general formula: RxQyMz(Fe1−mTm)bal, where R is at least one rare-earth element, Q is at least one...
US20060213580 Magnetic refrigeration material and method of manufacturing thereof  
A magnetic material comprising a NaZn13 type crystal structure with uniform and fine microstructure exhibiting excellent characteristics as a magnetic refrigeration material, and a method of...
US20070065677 Magnet, magnet magnetic material, coating film forming treatment liquid, and rotating machine  
A magnet, wherein a surface of each of magnetic particles constituting the magnet is covered by a film with two or more types of fluoride are main components, wherein the main components of the...
US20100282371 NDFEB SINTERED MAGNET AND METHOD FOR PRODUCING THE SAME  
The present invention is aimed at providing a method for producing an NdFeB sintered magnet having a higher coercivity and higher squareness of the magnetization curve than ever before. A method...

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