A surface-mounted transformer includes an adhesive layer and a winding product. The winding product is disposed inside the adhesive layer; the winding product includes an I-shaped magnetic core and a coil wound on a middle pillar of the I-shaped magnetic core; leading-out ends of the coil are connected to electrodes; the electrodes are exposed on the surface of the adhesive layer; and the adhesive layer is obtained through compression molding forming of a magnetic molding material. Compared with a surface-mounted transformer in the prior art, which has equal performance indexes, the surface-mounted transformer has a smaller size with a decrease proportion of over 50%; and a BOBBIN and an insulating rubber tape do not need to be used in processing. The winding product in the surface-mounted transformer is completely covered by the adhesive layer, so that the product is high in reliability and can support a PSIP plastic package environment.

An inductor manufacturing method and an inductor are provided. The inductor manufacturing method is used for manufacturing the inductor. The inductor includes a package body, a coil and two pins. The coil is located in the package body, the two pins are respectively connected to two ends of the coil, and parts of the two pins are exposed outside a bottom surface of the package body. The inductor manufacturing method includes: a pre-heating step including heating a core body; a core body placing step including placing the core body that is heated into a mold; a coil placing step including placing the coil into the mold; a powder filling step including filling a powder material into the mold; and a molding step including heating and pressing the mold, so that the powder material is molded into the package body.

A method of manufacturing a magnetic member comprises preparing a base member, which have a front surface and a back surface, and wherein an anchor coat layer is formed on the front surface, and forming a composite magnetic layer on the anchor coat layer.

A magnetic core assembly includes a first core having at least one gap and at least one second core provided within the at least one gap of the first core. The first core and the at least one second core are made of different materials. The at least one second core occupies a space no larger than the at least one gap of the first core.

A method for producing a powdered starting material, which is provided for production of rare earth magnets, including the following steps: pulverizing an alloy, including at least one rare earth metal, wherein a powdered intermediate product is formed from the alloy including at least one rare earth metal, and carrying out at least one classification aimed at particle size and/or density for the powdered intermediate product, wherein a fraction of the powdered intermediate product, which is formed by means of the at least one classification, for fabrication of rare earth magnets. Furthermore, at least one dynamic classifier is provided, implementing at least one classification directed at particle size and/or density for the powdered intermediate product and thereby separates the fraction from the powdered intermediate product, which forms the starting material provided for manufacturing rare earth magnets.

An inductor is provided so that reduction in DC superposition characteristics can be suppressed even when a filling rate of a magnetic powder is increased. The inductor includes a coil including a winding portion and a pair of extended portions extended from the winding portion, and a body having the coil embedded therein and containing a magnetic powder containing a first magnetic powder and a second magnetic powder, in which an average particle diameter of the first magnetic powder is larger than an average particle diameter of the second magnetic powder. In a cross section of the body including a winding axis of the winding portion and extending in a long side direction of the body, Voronoi partition is performed with a center of gravity of each magnetic powder as a generating point. When a standard deviation of an area of a Voronoi partition region with a magnetic powder having a particle diameter of equal to or more than 6 μm as a generating point is calculated, the standard deviation is equal to or less than 300.

It is intended to improve magnetic saturation characteristics of magnetic composite bodies containing metal magnetic particles and insulating fine particles.

A magnetic composite body contains a first metal magnetic particle and a second metal magnetic particle, and fine particles are in contact with the first and second metal magnetic particles. The fine particles are insulating and non-magnetic particles. A first oxide film is provided on the surface of the first metal magnetic particle, and a second oxide film is provided on the surface of the second metal magnetic particle.

A metal magnetic particle provided with an oxide layer on a surface of an alloy particle containing Fe and Si. The oxide layer has a first oxide layer, a second oxide layer, and a third oxide layer from a side of the alloy particle. All of the first oxide layer, the second oxide layer, and the third oxide layer contain Si. Also, in line analysis of element content by using a scanning transmission electron microscope-energy dispersive X-ray spectroscopy, the first oxide layer is a layer having Fe content smaller than Si content in the alloy particle, the second oxide layer is a layer having Fe content larger than the Si content in the alloy particle, and the third oxide layer is a layer having Fe content smaller than the Si content in the alloy particle.

A method of forming magnetically permeable material is provided. The method includes introducing magnetorheological (MR) fluid including one or more of magnetically permeable particles, fibers and fillers suspended in a curable liquid into a cavity, driving the magnetically permeable particles, fibers and/or fillers in the MR fluid into flux line formations and curing the curable liquid of the MR fluid during the driving to lock the flux line formations in place.

The invention discloses a method and its device for preparing a magnetic core with amorphous ribbon. The magnetic core is prepared with amorphous ribbon, the size of the amorphous ribbon is controlled according to the target requirements, and the magnetic core with required size and shape is prepared according to the target requirements; the single-roller rapid quenching technology with online automatic segmentation and automatic storage capability is used for preparation, which can control the length, width and thickness of the amorphous ribbon according to the target requirements; the amorphous ribbon segmented by single-roller rapid quenching technology is used to spray and cool down one by one, and then air-dry, transfer, spray adhesive and online store it one by one; the stored amorphous ribbon is reshaped, compressed and heat-treated successively, and then demoulded to prepare a magnetic core.