272results about How to "Excellent soft magnetic properties" patented technology

The present invention provides a method for producing a Fe-based amorphous alloy ribbon comprising the steps of: ejecting a molten Fe-based alloy containing 10 atomic % or less of B onto a cooling roll to solidify the molten Fe-based alloy; and peeling the solidified Fe-based alloy from the cooling roll when the solidified Fe-based alloy has a temperature of 100 to 300° C. A Fe-based amorphous alloy ribbon having no crystalline phase is stably, continuously produced without breakage by this method.

The invention discloses a high-magnetic-inductance high-frequency iron-based nanocrystalline soft magnetic alloy and a preparation method thereof. The molecular formula of the iron-based nanocrystalline soft magnetic alloy is FeaSibBcPdNbeVfMogCuh, the a, the b, the c, the d, the e, the f, the g and the h in the molecular formula correspondingly represent the atomic percentage contents of all thecorresponding alloy elements, and satisfy the following conditions that the a is greater than or equal to 75.5 and less than or equal to 77.5, the b is greater than or equal to 8.5 and less than or equal to 13.5, the c is greater than or equal to 7 and less than or equal to 10, the d is greater than or equal to 0.2 and less than or equal to 1, the e is greater than or equal to 1.0 and less than orequal to 1.7, the f is greater than or equal to 0.05 and less than or equal to 0.4, the g is greater than or equal to 0.1 and less than or equal to 1.5, the h is greater than or equal to 0.8 and lessthan or equal to 1.2, and the sum of the a, the b, the c, the d, the e, the f, the g and the h is 100. The high-magnetic-inductance high-frequency iron-based nanocrystalline soft magnetic alloy material has the advantages of excellent comprehensive soft magnetic performance, low cost, high thermal stability and the like, particularly, the high-frequency performance is good, the magnetic conductivity under the condition of 10 kHz can reach 28000 or above, a good application prospect is achieved, and the high-magnetic-inductance high-frequency iron-based nanocrystalline soft magnetic alloy material can be applied to the technical fields of high-frequency transformers, common mode chokes, wireless charging and the like.

There are provided a magnetic thin film utilizing a granular film and having excellent high frequency characteristics and a method of manufacturing the same, and a multilayered magnetic film and magnetic components and electronic equipment utilizing the same. A nonreactive sputtering is performed so that there is no oxidation of a magnetic metal, and a saturation magnetization is increased to increase a resonant frequency of permeability. Also, a multi-target simultaneous sputtering is combined with the nonreactive sputtering so that in a granular structure including magnetic grains and an insulating layer a size of the magnetic grains and a thickness of the insulating layer are optimized thereby ensuring a proper magnitude for a crystalline magnetic anisotropy within the grains and excellent soft magnetic properties. Further, the optimization of the thickness of the insulating layer has the effect of improving a resistivity, decreasing an eddy current and improving an exchange interaction between the magnetic grains.

The invention discloses a preparing method of an amorphous meal soft magnetic powder core. The preparing method includes the steps of 1, embrittling an amorphous strip, and crushing the amorphous strip embrittled to obtain amorphous metal powder; 2, screening the amorphous metal powder, and performing particle size matching; 3, subjecting the matched amorphous metal powder to passivation; 4, subjecting the amorphous metal powder, passivated by phosphoric acid, to insulation coating; 5, adding binder, and granulating the amorphous metal powder coated; 6, subjecting the granulated amorphous metal powder to magnetic field orientation forming; 7, subjecting a magnetic core, subjected to orientation forming, to axial magnetic thermal treatment; and 8, cooling the magnetic core, subjected to axial magnetic thermal treatment, and performing spraying to obtain a product. The preparing method has the advantages that magnetic domain forms in the amorphous magnetic core, coercive force and loss are lowered, magnetic core loss is further reduced, magnetic conductivity is improved, soft magnetic property of the amorphous magnetic core is improved, and the cost is lowered.

The magnetic thin film has high saturation magnetic flux density and superior soft magnetic characteristics. The magnetic thin film of the present invention comprises: a base layer being made of FeCo/NiFe; and a plated layer being formed on the base layer, the plated layer being made of FeCo.

An amorphous magnetic component for use in a high-power, high-speed electric motor, in which amorphous metal materials are powdered, compressed, and molded, to be easily molded into magnetic components of a complex shape, and crystalline metal powder of excellent soft magnetic properties is added to the amorphous alloy powder, to promote improvement of a magnetic permeability and improvement of a packing density at the time of compression molding. A method of manufacturing the amorphous magnetic component; includes the steps of: pulverizing ribbons or strips of amorphous alloys to obtain plate-shaped amorphous alloy powder; classifying the amorphous alloy powder, and mixing the amorphous alloy powder with spherical soft magnetic powder, in order to improve magnetic permeability and packing density, to obtain mixed powder; mixing the mixed powder with a binder, to be molded into a shape of the magnetic components; and sintering the molded magnetic components to implement magnetic properties.