Matches 201 - 250 out of 259 < 1 2 3 4 5 6 >
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3928089 Rare earth intermetallic compounds produced by a reduction-diffusion process  
A reduction-diffusion process for producing novel rare earth intermetallic compounds, for example, cobalt-rare earth intermetallic compounds, especially compounds useful in preparing permanent...
3919001 Sintered rare-earth cobalt magnets comprising mischmetal plus cerium-free mischmetal  
A sintered permanent magnet of compacted and sintered particles of a cobalt-rare-earth compound with the total rare-earth element content being within the range of 32 to 42% by weight, which total...
3919003 Sintered cobalt-rare earth intermetallic product  
A sintered product having substantially stable permanent magnet properties in air at room temperature consisting essentially of compacted particulate cobalt-rare earth alloy consisting essentially...
3919004 Liquid sintered cobalt-rare earth intermetallic product  
A process for preparing novel sintered cobalt-rare earth intermetallic products which can be magnetized to form permanent magnets having stable improved magnetic properties. A particulate mixture...
3912554 Recovery of rare-earth alloy particles from calcium-containing product using aqueous ammonium chloride  
An aqueous solution of ammonium chloride is admixed with a material comprised of calcium hydroxide, calcium oxide and rare earth alloy particles. The ammonium chloride reacts with and dissolves the...
3901742 Removal of lubricants and binders from sinterable powder components  
Powdered metal parts, particulary cobalt-rare earth magnets, having a smooth surface and strong structure are prepared by mixing the powder with an organic lubricant, press-forming the mixture to a...
3901741 Permanent magnets of cobalt, samarium, gadolinium alloy  
A permanent magnet having as the active magnetic component a sintered product consisting essentially of cobalt-samarium-gadolinium alloy having a reversible magnetization temperature coefficient in...
3892600 Annealed coated air-stable cobalt-rare earth alloy particles  
A process for producing novel air-stable coated particles of a magnetic transition metal-rare earth alloy. An organometallic compound which decomposes at a temperature below 500°C is heated to...
3892598 Cobalt-rare earth magnets comprising sintered products bonded with solid cobalt-rare earth bonding agents  
Permanent cobalt alloy magnets of large size are prepared. At least two compacts of particulate permanent magnet cobalt alloy are provided and a layer of particles of a bonding magnetic cobalt...
3892599 Air-stable compact of cobalt-rare earth alloy particles and method  
A process for producing novel air-stable magnetic products. An organometallic compound which decomposes at a temperature below 500°C is admixed with particles of a transition metal-rare earth...
3892601 Coated air-stable cobalt-rare earth alloy particles and method  
A process for producing novel air-stable coated particles of a magnetic transition metal-rare earth alloy. An organometallic compound which decomposes at a temperature below 500°C is heated to...
3891476 Method of magnetizing a body of M5 R at high temperatures  
A method for the magnetization of a sintered magnetic body mainly consisting of a material of the type M 5 R, in which M may be cobalt and R a rare earth metal. The magnetization proceeds most...
3878000 Recovery of cobalt-rare earth alloy particles by hydration-disintegration in a magnetic field  
A process for recovering magnetic alloy particles from a reaction product cake. The cake is placed in a reactor where it is contacted with a flowing water vapor-carrying gas which reacts with its...
3877999 Hydration-disintegration of cobalt-rare earth alloy containing material  
A self-regulating process for disintegrating reaction product cake to recover rare earth alloy particles contained therein. A support screen is selected having holes through which material of...
3873379 Method of producing rare earth-cobalt permanent magnet using special cooling rates  
A method of producing a rare earth-coabalt permanent magnet having high coercive force wherein powdery alloy containing rare earth elements and cobalt as principal component is compacted in...
3856582 FABRICATION OF MATRIX BONDED TRANSITION METAL-RARE EARTH ALLOY MAGNETS  
A process for producing novel air-stable magnetic products. An organometallic compound which decomposes at a temperature below 500°C is admixed with particles of a transition metal-rare earth...
3856581 ANNEALING AIR-STABLE MAGNETIC MATERIALS HAVING SUPERIOR MAGNETIC CHARACTERISTICS AND METHOD  
A process for producing novel air-stable coated particles of a magnetic transition metal-rare earth alloy. An organometallic compound which decomposes at a temperature below 500°C is heated to...
3856579 SPUTTERED MAGNETIC MATERIALS COMPRISING RARE-EARTH METALS AND METHOD OF PREPARATION  
Magnetic materials of the transition metal-rare-earth metal type are formed by high-rate sputter-deposition techniques which permit formation of thick bodies of magnetic materials having new and...
3856580 AIR-STABLE MAGNETIC MATERIALS AND METHOD  
A process for producing novel air-stable coated particles of a magnetic transition metal-rare earth alloy. An organometallic compound which decomposes at a temperature below 500°C is heated to...
3855017 POWDERIZED COBALT RARE EARTH METAL COMPOUNDS AND PROCESS FOR MAKING SUCH COMPOUNDS  
Powderized compounds of cobalt and one or more rare earth metals are produced in a gas transport reaction whereby the reaction components are kept in motion at least in a zone where the compounds...
3849213 METHOD OF PRODUCING A MOLDED ANISOTROPIC PERMANENT MAGNET  
There is provided a method of producing a molded anisotropic permanent magnet from particles of permanently magnetizable material, which particles have preferred axes of magnetization. This method...
3844851 PRE-FITTING METHOD OF MANUFACTURING COBALT SAMARIUM PERMANENT MAGNET ALLOY  
Method of manufacturing a material for permanent magnets based on samarium and cobalt, of the type consisting of preparing a powder of an alloy of these two bodies, compacting this powder under...
3844850 LARGE GRAIN COBALT-SAMARIUM INTERMETALLIC PERMANENT MAGNET MATERIAL AND PROCESS  
An alloy of cobalt and samarium is cast to produce a cast body having grains ranging in size from about 100 microns to 1000 microns. The cast body is annealed in an atmosphere in which it is...
3839101 CONTROLLED COOLING OF COBALT-RARE EARTH MAGNETIC ALLOYS  
Cobalt-rare earth magnets having an improved coercive force are prepared by cooling the cobalt-rare earth alloy from sintering temperature to about 900°C in an argon, helium, or other inert...
3816189 SOLID-STATE DIFFUSION PROCESS FOR THE MANUFACTURE OF PERMANENT MAGNET ALLOYS OF TRANSITION ELEMENTS AND METALS OF THE RARE-EARTH GROUP  
For the manufacture of permanent magnet alloys containing transition elements and rare-earth metals, the alloying operation usually gives rise to considerable difficulties. An improved alloying...
3802935 DEMAGNETIZATION OF COBALT-RARE EARTH MAGNETS  
A cobalt-rare earth intermetallic permanent magnet having a high intrinsic coercive force is substantially or completely demagnetized by low energy means. The magnet is heated to an elevated...
3785881 METHOD OF MANUFACTURING A BODY HAVING ANISOTROPIC PERMANENT MAGNETIC PROPERTIES BY GRINDING WITH FATTY LIQUID  
A method of manufacturing a non-ageing sintered rare earth-cobalt magnet having an optimum coercive force and shape of the demagnetization curve, by sintering above a given critical temperature and...
3755007 STABILIZED PERMANENT MAGNET COMPRISING A SINTERED AND QUENCHED BODY OF COMPACTED COBALT-RARE EARTH PARTICLES  
A process for producing a novel cobalt-rare earth intermetallic permanent magnet material having a substantially stable magnetization at ambient temperatures above room temperature. A sintered...
3664892 PERMANENT MAGNET MATERIAL POWDERS HAVING SUPERIOR MAGNETIC CHARACTERISTICS  
The coercive force of a cobalt-rare earth intermetallic compound is greatly enhanced by chemically treating the compound in finely divided form so as to smooth the surfaces of the individual...
3661726 METHOD OF MAKING PERMANENT MAGNETS  
A method for making single phase or multiphase permanent magnets having high intrinsic coercivity, in which a molten state salt electrolysis technique is used to produce a variety of magnetic...
3655464 PROCESS OF PREPARING A LIQUID SINTERED COBALT-RARE EARTH INTERMETALLIC PRODUCT  
A process for preparing novel sintered cobalt-rare earth intermetallic products which can be magnetized to form permanent magnets having stable improved magnetic properties. A particulate mixture...
3639181 SINTERED COBALT-RARE EARTH BODIES AND METHOD OF PRODUCTION  
By infiltrating liquid calcium metal into a green compact of single-phase Co 5 R powder of high-coercive force during the early stages of a sintering operation, the coercive force of the powder...
3615911 SPUTTERED MAGNETIC FILMS  
Sputtered films containing compositions exemplified by Co 5 Sm sometimes with nonmagnetic diluents such as Cu manifest magnetic properties similar to the best reported for the corresponding bulk...
3615915 METHOD OF DENSIFYING MAGNETICALLY ANISOTROPIC POWDERS  
A method of densifying magnetically anisotropic powders under a magnetic field by the use of isostatic pressures of at least 10 kb.
3615914 METHOD OF STABILIZING PERMANENT MAGNETIC MATERIAL POWDERS  
Method of stabilizing cobalt-rare earth material having a superior coercive force by contacting the particles with zinc or arsenic in an inert atmosphere at a temperature about the melting point of...
3546030 PERMANENT MAGNETS BUILT UP OF M5R  
3540945 PERMANENT MAGNETS  
3523836 PERMANENT MAGNET CONSTITUTED OF FINE PARTICLES OF A COMPOUND M5R  
3501358 METHOD OF MAKING PERMANENT MAGNET MATERIAL POWDERS HAVING SUPERIOR MAGNETIC CHARACTERISTICS  
3421889 MAGNETIC RARE EARTH-COBALT ALLOYS  
3144325 Magnetic compositions containing iron, rhodium, and at least one member of the lanthanide series  
3102002 Ferromagnetic materials prepared from lanthanons and transition metals  
3558371 Title is not available  
3591428 Title is not available  
3682715 Title is not available  
3748193 Title is not available  
3695945 Title is not available  
3684593 Title is not available  
3821035 Title is not available  
3684591 Title is not available  
Matches 201 - 250 out of 259 < 1 2 3 4 5 6 >