Matches 51 - 100 out of 259 < 1 2 3 4 5 6 >
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6506264 Ferromagnetic powder  
A ferromagnetic powder containing iron as the principal component and containing more than 5 to 50 at. % Co, 0.1 to 30 at. % Al, 0.1 to 10 at. % of a rare earth element inclusive of Y, 0.05% by...
6478891 Ribbon shaped magnet material magnetic powder and rare earth bonded magnet  
The ribbon shaped magnet material (quenched ribbon 8 ) according to the present invention is obtained by ejecting a molten liquid 6 of an alloy containing rare earth elements and transition...
6475302 Permanent magnet  
Disclosed is a permanent magnet which comprises an alloy containing a hard magnetic phase having a ThMn12 type tetragonal structure and a nonmagnetic phase. The alloy is represented by a general...
6468440 Magnet powder and method for producing the same, and bonded magnet using the same  
Magnet powder has a composition expressed by (R 1 X R 2 Y B Z T 100−X−Y−Z ) 100−Q N Q (in formula, R 1 is at least one kind of element selected from rare earth elements, R 2 is at least...
6451132 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...
6419759 Multielement interstitial hard magnetic material and process for producing magnetic powder and magnet using the same  
There is provided a multielement rare earth-iron interstitial permanent magnetic material having the formula of (R 1−α R″ α ) x (Mo 1−β M β ) y Fe 100−x−y−z l z , wherein, R is a...
6413327 Nitride type, rare earth magnet materials and bonded magnets formed therefrom  
A nitride-type, rare earth magnet material having a basic composition represented by R α T 100-(α+β+γ+δ) M β B γ N δ (atomic %), wherein R is at least one rare earth element including Y,...
6375761 Magnetoresistive material with two metallic magnetic phases  
A magnetoresistive material with two metallic magnetic phases. The material exhibits the giant magnetoresistance effect (GMR). A first phase of the material includes a matrix of an electrically...
6336978 Heat regenerative material formed of particles or filaments  
A heat regenerative material including AMz, where A is at least one rare earth element selected from the group consisting of Y, La, Ce, Pr, Nd, Pm, Sm, Eu, Gd, Tb, Dy, Ho, Er, Tm and Yb; M is at...
6334908 Sm-Fe-N alloy powder and process for the production thereof  
A magnetic powder of an Sm—Fe—N alloy, which has a mean particle diameter of 0.5 to 10 μm, and either an average acicularity of 75% or above or an average sphericity of 78% or above. The...
6312530 Magnetostrictive material  
A magnetostrictive material is produced by annealing an alloy consisting essentially of an amorphous phase and comprising Fe, Dy, and Tb as primary components, at least one element selected from...
6281774 Corrosion-resistant permanent magnet and method for producing the same  
The present invention provides an Fe--B--R based permanent magnet, which has a chemical conversion coating film formed on its surface with an aluminum film interposed therebetween, the chemical...
6273966 High performance rare earth-transition metal magnetostrictive materials  
A high performance rare earth-transition metal magnetostrictive material with increased impurities having the formula (R x1 R x2 . . . R x11 ) 1 (M y1 M y2 . . . M y6 ) z is provided. Each R...
6273965 Magnetostrictive materials and method for improving AC characteristics in same  
The present invention provides Terfenol-D alloys ("doped" Terfenol) having optimized performances under the condition of time-dependent magnetic fields. In one embodiment, performance is optimized...
6270591 Amorphous and nanocrystalline glass-covered wires  
The invention refers to amorphous and nanocrystalline magnetic glass-covered wires. The wires consist of a metallic amorphous or nanocrystalline core with diameters by the order of 10 -6 m, having...
6261385 Magnetically anisotropic rare earth-based nanocomposite permanent magnet  
Disclosed is a novel magnetically anisotropic rare earth-based permanent magnet having a nanocomposite structure consisting of a hard magnetic phase such as Nd 2 Fe 14 B and a soft magnetic phase...
6235129 Hard magnetic material  
A hard magnetic material contains Co as a main component, at least one element Q of P, C, Si and B, and Sm, and an amorphous phase and a fine crystalline phase. The texture of the hard magnetic...
6214288 Method for the preparation of a rare earth permanent magnet  
An improvement is proposed in the powder metallurgical method for the preparation of a rare earth-based permanent magnet comprising the steps of compression-molding a magnet alloy powder into a...
6210495 Method for preparing a rare earth- and transition metal-based magnetically anisotropic material by solidifying a liquid alloy in a guiding field  
Method for obtaining a solid, magnetically anisotropic material, includes the steps of heating an alloy containing a rare earth element and at least one transition metal to a temperature higher...
6197127 Cryogenic refrigerant and refrigerator using the same  
A heat regenerating material for very low temperature use consisting of a magnetic heat regenerating material particle aggregate, wherein, among magnetic heat regenerating material particles...
6183868 Spindle-shaped goethite particles, spindle-shaped hematite particles and spindle-shaped magnetic iron based alloy particles  
The present invention relates to spindle-shaped goethite particles and spindle-shaped hematite particles, which have a narrow particle size distribution, include no dendrites, and have an...
6149736 Magnetostructure material, and process for producing the same  
A magnetostrictive material includes a rare earth element and a transition metal element, and has a plurality of spherical voids dispersed in the entire area thereof. The void content Vc is set in...
6143193 Rare earth bonded magnet, rare earth magnetic composition, and method for manufacturing rare earth bonded magnet  
A rare earth bonded magnet comprising a rare earth magnet powder bonded with a binder resin is manufactured by extrusion or injection molding. A rare earth bonded magnet manufactured by extrusion...
6139765 Magnetic powder, permanent magnet produced therefrom and process for producing them  
A magnetic powder and a permanent magnet are provided which have magnetic properties enhanced by magnetic interaction. Disclosed are a magnetic powder comprising a mixture of two or more powders...
6125912 Advanced neutron absorber materials  
A neutron absorbing material and method utilizing rare earth elements such as gadolinium, europium and samarium to form metallic glasses and/or noble base nano/microcrystalline materials, the...
6071357 Magnetostrictive composites and process for manufacture by dynamic compaction  
A metal-matrix composite of magnetostrictive powder is manufactured by dynamic compaction, such as that provided by the shock waves of an explosive, from a magnetostrictive powder in the presence...
6042657 Regenerator material for extremely low temperatures and regenerator for extremely low temperatures using the same  
A cold heat accumulating material for extremely low temperatures which comprises cold heat accumulating granular bodies in which a rate of particles, which are destroyed when a compressive force of...
6030468 Cold accumulator  
A cold accumulator filled with a cold accumulating material including 20 to 95 at % of at least one element selected from the group consisting of cerium (Ce), neodymium (Nd), praseodymium (Pr),...
6017402 Composite magnetostrictive material, and process for producing the same  
A composite magnetostrictive material having a magnetostrictive performance required for a practical use and yet a higher strength. A composite magnetostrictive material 1 is comprised of a matrix...
5997660 Magnetic materials  
A method of manufacturing a magnetic material exhibiting magnetostrictive properties in which the Curie Temperature of the material is maintained by the addition of cerium. The cerium may be added...
5983645 Regenerator and cryogenic refrigerator having regenerator  
In a second displacer (33), a final layer (33c) measuring 10 K or lower in temperature is filled with spherical particles (34) of HoCu 2 which exhibit a specific heat greater than that of Er 3 ...
5968290 Permanent magnet material and bonded magnet  
A permanent magnet material has a principal phase of TbCu7 type crystal structure and improved magnetic properties. This permanent magnet material is represented by the general formula: R1 x R2 y ...
5888417 Rare earth bonded magnet and composition therefor  
A rare earth bonded magnet formed by bonding a rare earth magnet powder with a binding resin contains the rare earth magnet powder, and a thermoplastic resin serving as the binding resin in an...
5858124 Rare earth magnet of high electrical resistance and production method thereof  
A high-resistance rare earth magnet having a metal structure in which a rare earth magnet phase is dispersed throughout a compound phase comprising at least one compound selected from the group...
5840133 Permanent magnet  
A permanent magnet of a magnetically anisotropic sinter based on Fe--Mn--R, R representing one or more rare earth elements, which is inexpensive and superior in the low temperature characteristic...
5811187 Environmentally stable reactive alloy powders and method of making same  
Apparatus and method for making powder from a metallic melt by atomizing the melt to form droplets and reacting the droplets downstream of the atomizing location with a reactive gas. The droplets...
5800728 Permanent magnetic material made of iron-rare earth metal alloy  
An iron-rare earth metal permanent magnetic composition, comprising predominant phase having a body-centered tetragonal structure, and consisting essentially of an iron-based alloy having a...
5792284 Magnetostrictive powder composite and methods for the manufacture thereof  
Magnetostrictive powder composite and method for the manufacturing of the magnetostrictive powder composite. The composite comprises magnetostrictive powder grains with chemical composition (RE) x ...
5772796 Temperature stable permanent magnet  
A rare earth element containing permanent magnet which retains its magnetic properties at elevated temperatures by a combination of reducing the temperature coefficient of intrinsic coercivity...
5769969 Rare earth-iron-nitrogen magnet alloy  
A rare earth-iron-nitrogen magnet alloy contains a rare earth element (at least one of the lanthanoids including Y), iron and nitrogen as its main components, or may further contain at least one of...
5750044 Magnet and bonded magnet  
A magnet consists essentially of 4-8 at % of R, 10-20 at % of N, 2-10 at % of M, and the balance of T wherein R is at least one rare earth element, Sm being present in R in a proportion of at least...
5743095 Active magnetic refrigerants based on Gd-Si-Ge material and refrigeration apparatus and process  
Active magnetic regenerator and method using Gd 5 (Si x Ge 1 -x) 4 , where x is equal to or less than 0.5, as a magnetic refrigerant that exhibits a reversible ferromagnetic/antiferromagnetic or...
5693154 Terbium-dysprosium-zinc and terbium-gadolinium-zinc magnetostrictive materials and devices  
Polycrystalline or single crystal magnetostrictive alloys of the formula Tb 1 -x Dy x Zn w (0<x≤0.7; 0.90≤w≤1.10) and Tb 1 -y Gd y Zn w (0<y≤0.4; 0.90≤w≤1.10) and...
5690889 Production method for making rare earth compounds  
A method of making a rare earth compound, such as a earth-transition metal permanent magnet compound, without the need for producing rare earth metal as a process step, comprises carbothermically...
5674327 Alloy ingot for permanent magnet, anisotropic powders for permanent magnet, method for producing same and permanent magnet  
An alloy ingot for permanent magnet consists essentially of rare earth metal and iron and optionally boron. The two-component alloy ingot contains 90 vol % or more of crystals having a crystal...
5658396 Magnetic material  
Disclosed is a magnetic material which exhibits an improved saturation magnetic flux density and an improved magnetic anisotropy and, thus, is adapted for use as a raw material of a permanent...
5593517 Regenerating material and refrigerator using the same  
The regenerating material according to the present invention comprises two alloy phases which differ in a content of rare earth elements. Of these alloy phases, a dominant phase in the regenerating...
5591535 Ferromagnetic metal powder  
There is provided an accicular ferromagnetic metal powder with which one can produce magnetic media for high-density recording that are improved in storage stability and magnetic characteristics....
5565830 Rare earth-cobalt supermagnetostrictive alloy  
A rare earth-cobalt supermagnetostrictive alloy having a composition represented by the general formula, in atomic fraction: R (Co 1 -x Fe x ) x , wherein 0.001≤x≤0.8, 0.2≤z≤15, and R is at...
5549766 Magnetic material  
A permanent magnet is composed of a magnetic material which is represented by a general formula R1 x R2 y A z Co u Fe 100 -x-y-z-u (where R1 is at least one element selected from rare earth...
Matches 51 - 100 out of 259 < 1 2 3 4 5 6 >