Abstract: The present invention relates to a method for preparing multi-purpose magnetized and sintered ceramics, comprising the steps of adding water to a mixture of Maek-Ban Stone and soft sericite, stirring and maturing at a room temperature, sintering, and irradiating with a magnetic field. The ceramics obtained by the present invention produce various effects such as keeping food fresh, deodorization and purification.

Abstract: A method of forming nanoparticles includes steps of forming a metal precursor solution from a transition metal, injecting the metal precursor solution to the surfactant solution, adding a flocculent to cause nanoparticles to precipitate out of solution without permanent agglomeration, and adding a hydrocarbon solvent to redisperse or repeptize the nanoparticles.

Abstract: Permanent rare-earth magnets containing Ce are fabricated with coercivity greater than 4 kOe. One composition for such magnets is [CeyR1−y]z(F1−vBv)1−z, where R is one or more rare-earth elements, F is Fe or Fe—Co, and the relative elemental atomic composition is 0.0<y≦0.3, 0.04≦z≦0.25, and 0.01≦v≦0.30. Another composition is [(CexLa1−x)yR1−y]z(F1−vBv)1−z, with the relative elemental atomic composition x<0.4 or 0.9<x≦1.0 and 0.2≦y≦0.8, 0.04≦z≦0.25, and 0.01≦v≦0.30.

Abstract: There are provided fluid compositions with particulate solid materials dispersed therein which are characterized by exceptionally low settling tendencies of the dispersed particles. Such compositions containing particulate ferromagnetic solids are useful as magnetorheological fluids.

Abstract: A process for producing a compound for a rare earth metal resin-bonded magnet includes: a slurry preparation step of mixing materials containing a magnetic alloy powder of a rare earth metal alloy, a resin binder, and an organic solvent into a slurry; and a drying step of spraying and drying the slurry by means of a spray dryer apparatus to produce the compound containing the magnetic alloy powder of the rare earth metal alloy and the resin binder.

Abstract: Ceramic-coated powdered ferromagnetic materials for forming magnetic articles, and which maintain the mechanical and magnetic properties of the articles at high temperatures, such as during annealing to relieve stresses induced during the forming operation. The ceramic coatings are formed by one of several techniques to provide an encapsulating layer on each ferromagnetic particle. The particles are then compacted to form a solid magnetic article, which can be annealed without concern for degrading the ceramic coating.

Abstract: This invention is directed to an extrusion-molded magnet comprising a samarium-iron-nitrogen material, which is novel and capable of exhibiting excellent magnetic properties, i.e., samarium-iron-nitrogen system magnetic particles excellent in magnetic properties. A permanent magnet material comprising a samarium-iron-nitrogen system magnetized anisotropy particles and having increased inter-iron atom distance and elevated magnetic saturation. The magnet material is prepared by a method of causing nitrogen intrusion into the iron crystal lattice of a samarium-iron alloy by holding the alloy in a nitrogen gas at about 500 degrees C. The prepared permanent magnet material is added to a thermoplastic polyolefin system synthetic resin, and the admixture is thermally fused and kneaded. The paste thus obtained is charged into an extrusion molder and extruded through a magnetic field device, which is at an end of the extrusion molder and has an internal die, thus obtaining a molded magnet.

Abstract: In a core material for the noise filter, powders of a flat and soft magnetic material is dispersed and buried into an insulating material such as rubber or plastic.