Abstract:
[Object] To provide in particular an Fe-based amorphous alloy powder which has a low glass transition temperature (Tg) and an excellent corrosion resistance and which is used for a dust core or a coil-embedded dust core, each having high magnetic characteristics. [Solution] An Fe-based amorphous alloy powder of the present invention has a composition represented by (Fe 100-a-bc-x-y-z-t Ni a Sn b Cr c P x C y B z Si t ) 100-± M ± . In this composition, 0 at%‰¤a‰¤10 at%, 0 at%‰¤b‰¤3 at%, 0 at%‰¤c‰¤6 at%, 6.8 at%‰¤x‰¤10.8 at%, 2.2 at%‰¤y‰¤9.8 at%, 0 at%‰¤z‰¤4.2 at%, and 0 at%‰¤t‰¤3.9 at% hold, a metal element M is at least one selected from the group consisting of Ti, Al, Mn, Zr, Hf, V, Nb, Ta, Mo, and W, and the addition amount ± of the metal element M satisfies 0.04 wt%‰¤±‰¤0.6 wt%. Accordingly, besides a decrease of Tg, an excellent corrosion resistance and high magnetic characteristics can be obtained.
Abstract:
There is provided a magnetic core (1) having high manufacturability and high magnetic permeability, a method for manufacturing such a magnetic core (1), and a coil component (10) having such a magnetic core (1). The invention is directed to a magnetic core (1) including: Fe-based soft magnetic alloy particles; and an oxide phase existing between the Fe-based soft magnetic alloy particles, wherein the Fe-based soft magnetic alloy particles include Fe-Al-Cr alloy particles and Fe-Si-Al alloy particles.
Abstract:
The present invention provides a magnetic core part by which failures such as cracks do not occur even if the magnetic core part contains 90% by mass or more of an amorphous metal powder. The magnetic core part is formed by thermoset molding at least one magnetic powder selected from an amorphous metal powder alone and an amorphous metal powder coated with an insulating material, and a thermosetting binder resin. The magnetic core part contains the magnetic powder in an amount of 90% by mass or more and 99% by mass or less with respect to the total amount of the magnetic powder and the thermosetting binder resin.
Abstract:
Disclosed is a novel high-density magnetic composite material for an inductor. The material is composed of 6-12% of high-temperature resin glue and 88-94% of magnetic powder body in percentage by weight. An integrated inductor magnetic core is simply prepared by means of the magnetic composite material of the disclosure without a large press, thus saving the device investment. The mold loss in a pressing process is reduced, and the production cost is reduced. The operation is simple, a magnet of a complex shape can be produced, and an oversized magnet can be produced. A closed magnetic circuit is formed, and the EMI effect is good. The magnetic composite material of the disclosure enables the density of a solidified magnet to be high under the action of special high-temperature resin glue, it can be guaranteed that the density is 5.5-6.2 g/cm 3 , the sensitive quality value for preparing an inductor is high, and the initial permeability can be 14µ or above. The magnetic composite material of the disclosure can bear a higher temperature, and can work at the temperature of 180°C. The magnetic composite material of the disclosure is high in utilization rate, low in scrap rate and low in dust rate, and meets the requirement for environmental protection.
Abstract:
The present disclosure provides a power inductor, which includes a body, at least one substrate provided inside the body, at least one coil pattern provided on at least one surface of the substrate, and an insulation layer formed between the coil pattern and the body, wherein the insulation layer is formed of parylene.
Abstract:
Disclosed are devices and methods related to laminated polymeric planar magnetics. In some embodiments, a magnetic device can have a base layer including a polymeric laminate layer. The base layer can further include a set of one or more conductive ribbons implemented on a first side of the polymeric laminate layer. The base layer can have a perimeter that includes at least one cut edge. The magnetic device can further include a structure implemented on the base layer. The structure can include a set of one or more conductor features implemented on a side away from the base layer. The structure can have a perimeter that includes an edge set inward from the cut edge by an amount sufficient to allow a cutting operation that cuts the polymeric laminate layer to yield the cut edge.
Abstract:
In einem ersten Aspekt stellt die Erfindung einen Ferritkern mit einem Jochkörper (110) bereit, der eine Längendimension, eine Breitendimension und eine Höhendimension aufweist, die jeweils zueinander senkrecht orientiert sind, wobei die Längendimension größer ist als die Höhendimension und/oder die Breitendimension. In einer Seitenfläche (116) des Jochkörpers (110) sind eine Positionierstruktur (112) und eine von der Positionierstruktur (112) verschiedene längliche Ausrichtstruktur (114) bereitgestellt, die entlang der Längendimension zwischen 5% und 75% der Längendimension voneinander beabstandet sind. Hierbei ist eine maximale Abmessung der länglichen Ausrichtstruktur (114) quer zu einer Richtung ausgerichtet ist, die senkrecht zu einer Verbindungsrichtung zwischen der Positionierstruktur (112) und der Ausrichtstruktur (114) orientiert ist.
Abstract:
A magnetic core includes alloy phases 20 each made of Fe-based soft magnetic alloy grains including M1 (wherein M1 represents both elements of Al and Cr), Si, and R (wherein R represents at least one element selected from the group consisting of Y, Zr, Nb, La, Hf and Ta), and has a structure in which the alloy phases 20 are connected to each other through a grain boundary phase 30. In the grain boundary phase 30, an oxide region is produced. The oxide region includes Fe, M1, Si and R and further includes Al in a larger proportion by mass than the alloy phases 20.