A magnetic bead includes: a magnetic metal powder; and a coating layer that covers a particle surface of the magnetic metal powder, has an average thickness of 20 nm or more, and is made of an oxide material. A coercive force is 1.0 Oe, which is equal to 80 A/m, or less. The magnetic metal powder may contain an amorphous structure or a nanocrystalline structure. The magnetic metal powder may be made of an alloy containing Fe as a main component.

A method for producing an insulator-coated soft magnetic powder includes: a mixing step of mixing a soft magnetic powder and a ceramic powder to obtain a mixture; a first compression bonding step of pulverizing the ceramic powder by applying mechanical energy to the mixture; and a second compression bonding step of fusing, by applying to the mixture mechanical energy larger than the mechanical energy in the first compression bonding step, the pulverized ceramic powder to surfaces of particles of the soft magnetic powder and obtaining an insulator-coated soft magnetic powder, after the first compression bonding step.

A grain-oriented electrical steel sheet according to an embodiment of the present invention includes: in wt %, Si at 1.0 to 7.0%, Mn at 0.5% or less (excluding 0%), Al at 0.005% or less (excluding 0%), S at 0.0055% or less (excluding 0%), one or more of Ba and Y at 0.005 to 0.5%, one or more of Sn at 0.02 to 0.15%, Sb at 0.01 to 0.08%, and Ni at 0.02 to 0.5%, and the balance of Fe and inevitable impurities.

A soft magnetic alloy having a good combination of formability and magnetic properties is disclosed. The alloy has the formula

Fe.sub.100-a-b-c-d-e-fSi.sub.aM.sub.bL.sub.cM′.sub.dM″.sub.eR.sub.f

wherein M is Cr and/or Mo; L is Co and/or Ni; M′ is one or more of Al, Mn, Cu, Ge, Ga; M″ is one or more of Ti, V, Hf, Nb, W; and R is one or more of B, Zr, Mg, P, Ce. The elements Si, M, L, M′, M″, and R have the following ranges in weight percent:

TABLE-US-00001 Si   4-7 M 0.1-7 L 0.1-10 M′ up to 7 M″ up to 7 R up to 1

The balance of the alloy is iron and usual impurities. A thin-gauge article made from the alloy and a method of making the thin-gauge article are also disclosed.

The present invention relates to a novel method for conferring to thermoplastic, thermostable polymers or elastomers, magnetic, electromagnetic, electrical, X-ray shielding or density properties that allow the detection of said polymers by means of specific equipment that exists in the prior art. The detection of the thermoplastic polymers, thermostable polymers or elastomers in turn facilitates their location, removal or separation. The method is based on the addition of specific iron and silicon alloys with or without surface treatment.

A soft magnetic powder, including an Fe alloy, and containing 0.1 to 15 mass % of Si, wherein a ratio (Si/Fe) of an atomic concentration of Si and an atomic concentration of Fe is from 4.5 to 30 at a depth of 1 nm from a particle surface of the soft magnetic powder.

The invention involves producing discontinuous, flake-shaped particles of a soft magnetic material, coating the flake-shaped particles with an electrically insulating coating, and consolidating the coated flaked-shaped particles to form a soft magnetic bulk shape. The consolidated bulk shape can comprise a layer or a simple or complex 3D magnet part shape, which has a consolidated layered microstructure that includes laminated soft magnetic regions that are substantially encapsulated by an electrical insulating layer to increase the resistivity of soft magnetic material, especially when used in silicon iron magnet parts.

A method is provided for the production of a wound nanocrystalline magnetic core in which a nanocrystalline metal strip made of (Fe.sub.1-aM.sub.a).sub.100-x-y-z-α-βCu.sub.xSi.sub.yB.sub.zM′.sub.αX.sub.β is pre-wound to form a first coil. An insulating foil is provided that is coated with an adhesive on at least one side. An adhesive is applied to the nanocrystalline metal strip to laminate the insulating foil onto the metal strip and thereby to stabilise the metal strip as it is wound off the coil. The laminated nanocrystalline metal strip and the insulating foil are bifilar wound to form a bifilar, layer-insulated coil.

A supersaturated solid solution soft magnetic material and a preparation method thereof are provided, belonging to the field of metal soft magnetic technologies. The supersaturated solid solution soft magnetic material is soft magnetic alloy with proportions of 72.0˜78.0 at % Fe, 12.0˜18.0 at % Si, 4.0˜12.0 at % Co and 1.0˜3.0 at % Ti. The preparation method uses molten glass purification or electromagnetic levitation melting to an alloy melt with a target supercooling degree, increases the solid solubility of the Ti element in α-Fe (Si, Co), and promotes the formation of supersaturated solid solution of Ti, thereby achieving the goal that the magnetocrystalline anisotropy constant and the magnetostriction coefficient tend to be zero. Ti element is uniformly distributed in the α-Fe (Si, Co) after supercooled solidification analyzed by X-ray energy spectrometer, a supersaturated solid solution alloy without Ti precipitation is obtained, and the soft magnetic alloy has low coercivity and high permeability.

A method of fabricating a magnetic component structure with thermal conductive filler, including steps of providing a mold with a coil mounted therein, potting the mold with a thermal conductive material to form a thermal conductive filler encapsulating at least a portion of said coil, releasing the thermal conductive filler and the coil from the mold, and combining the thermal conductive filler with magnetic cores to form a magnetic component structure.