A kind of preparation method of amorphous composite magnetic powder core

Abstract

The invention belongs to the field of metal soft magnetic materials, and particularly relates to a method for preparing an amorphous combined magnetic powder core. The method comprises the following steps that firstly, and two kinds of magnetic powder cores are respectively prepared, wherein the magnetic conductivity of one magnetic powder core differs by 200 from the magnetic conductivity of the other magnetic power core, the magnetic powder cores are in an equal-height cuboid shape, and two magnetic powder cores with the same magnetic conductivity are prepared; secondly, the four magnetic powder cores are spliced through magnetic conductive glue into a combined magnetic powder core, the top view of the combined magnetic powder core is in a hollow rectangular or square shape, and the method that the magnetic powder cores with the different magnetic conductivities are connected in spliced mode is adopted. A combined iron core is prepared through the same amorphous materials, the effective contact surface of the joint of the iron core is greatly increased, losses are reduced, and efficiency is improved.

Description

technical field [0001] The invention belongs to the field of manufacturing metal soft magnetic materials, and in particular relates to a method for preparing an amorphous composite magnetic powder core. Background technique [0002] Metal magnetic powder core is a kind of soft magnetic material made by mixing and pressing ferromagnetic powder particles and insulating medium. Its special soft magnetic properties make it have advantages that other magnetic materials cannot match in many applications. Since the 21st century, scientific and technological progress requires various high-performance electronic devices, thus putting forward higher requirements for magnetic powder cores. Amorphous FeSiB magnetic powder cores have the characteristics of high quality factor, low high-frequency loss, and low price, and have broad application prospects in the field of high-frequency inductor cores. [0003] The combined soft magnetic core is spliced ​​by two soft magnetic materials with...

AI Technical Summary

Problems solved by technology

The currently commonly used combined soft magnetic core is usually a combination of sendust, iron silicon, etc. and ferrite, but the combined iron core of different materials has a small effective contact surface at the connection, and different materials have different saturation magnetic induction. (Bs) causes the combined iron core to generate more heat during use, and at the same time increases the loss of the iron core and reduces the efficiency

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