A magnetic material for a wireless charging system comprises iron powders and 1-10% by weight of a thermosetting resin. The iron powders are individually insulated by the thermosetting resin. A method for manufacturing the magnetic material for the wireless charging system includes mixing particles of a balance of the iron powders, pressing the mixed particles of the iron powders and the thermosetting resin, and subjecting curing heat treatment to a green compact, where the iron powders are individually insulated by the thermosetting resin.

An insulating material-coated soft magnetic powder includes: a core particle that includes a base portion containing a soft magnetic material containing Fe as a main component and at least one of Si, Cr, and Al, and that includes an oxide film provided on a surface of the base portion and containing an oxide of at least one of Si, Cr, and Al; and an insulating film that is provided on a surface of the core particle and that contains a ceramic, in which a thickness of the insulating film is 5 nm or more and 300 nm or less, and the oxide contained in the oxide film and the ceramic contained in the insulating film are mutually diffused at an interface between the oxide film and the insulating film.

A soft magnetic metal powder or the like from which a soft magnetic metal fired body can be provided has a high magnetic permeability μ and a specific resistance ρ and is contained in a coil-type electronic component having sufficiently high inductance L and Q value and unlikely to be plating-extended and short-circuited. A soft magnetic metal powder contains soft magnetic metal particles containing at least Fe and Ni. Said soft magnetic metal powder further contains P, Si, Cr and/or M. M is at least one selected from among B, Co, Mn, Ti, Zr, Hf, Nb, Ta, Mo, Mg, Ca, Sr, Ba, Zn, Al, and rare earth elements. The content of each element is within a predetermined range.

Disclosed herein is a composite magnetic powder that includes an iron-containing magnetic powder and an insulating layer comprising a silicon oxide formed on a surface of the iron-containing magnetic powder. The insulating layer contains pores, and an area ratio of the pores in a cross section of the insulating layer is 5% or less.

A soft magnetic metal powder including a soft magnetic metal particle. The soft magnetic metal particle includes a metal particle and an oxide part covering the metal particle. An interface between the metal particle and the oxide part has roughness. A maximum height Rz of roughness at the interface between the metal particle and the oxide part is within a range of 1.0 nm or more and 50.0 nm or less.

The present invention relates to a soft magnetic metal powder which contains B and has Fe and Ni as the main components, wherein the content of Ni in the soft magnetic metal powder is 30 to 80 mass %, the total content of Fe and Ni in the soft magnetic metal powder is 90 mass % or more, the content of B inside the metal particle of the soft magnetic metal powder is 10 to 150 ppm, and the particle has a film of boron nitride on the surface. The present invention also relates to a soft magnetic metal powder core prepared by using the soft magnetic metal powder.

Methods for manufacturing dual phase soft magnetic components include combining a plurality of soft ferromagnetic particles with a plurality of paramagnetic particles to form a component structure, wherein the plurality of soft ferromagnetic particles each comprise an electrically insulative coating, and, heat treating the component structure to consolidate the plurality of soft ferromagnetic particles with the plurality of paramagnetic particles.

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 coil component includes a body, a coil portion embedded in the body, first and second external electrodes spaced apart from each other on an external surface of the body and connected to the coil portion, and an identification portion in which a plurality of fine patterns spaced apart from one another are grouped and which is disposed on the external surface of the body. Each of the plurality of fine patterns includes an insulating resin.

An insulating material coated soft magnetic powder, which is a powder body of an insulating material coated soft magnetic particle 1, includes: a core particle 2 including a base portion 2a that includes a soft magnetic material, and an oxide film 2b that is provided on a surface of the base portion 2a and contains an oxide of an element contained in the soft magnetic material, and an insulating film 3b in which a plurality of insulating nanoparticles 3a are attached to the core particle 2. A particle size of each nanoparticle 3a is 1/50,000 or more and 1/100 or less, relative to a particle size of the core particle 2, and after being subjected to a heat treatment in which the core particle 2 is heated at a sintering temperature or higher, a specific resistance after the heat treatment is 110% or more of a specific resistance before the heat treatment.