Metal soft magnetic powder core features

Metal soft magnetic powder core, which retains some excellent characteristics of metal soft magnetic and ferrite soft magnetic, and at the same time overcomes some of the defects of the two. So far, among the four categories of soft magnetic materials, it is the soft magnetic material with the best comprehensive performance. Its main features are as follows:

1 has a high saturation magnetic flux density. The iron powder core has a saturation magnetic flux density of up to 1500mT, a high-throughput magnetic powder core of up to 1300mT, and a ferrosilicon-aluminum magnetic powder core with a saturation magnetic flux density of up to 1000mT, even the four series of metal soft magnetic powder cores. The MPP-type magnetic powder core with the lowest density can reach up to 800mT. This property retains the advantages of metal soft magnetic, which is far from the ferrite soft magnetic material.

2 has a high effective magnetic permeability. Such as MPP type magnetic powder core, the μe value can be as high as 500 or more at 10KHz. The iron powder core material -26 with the lowest effective magnetic permeability has a μe value of about 75 at 10 kHz. However, we have used soft magnetic rolling of superporous metal to 0.01mm thick, and after strip processing, the initial magnetic permeability is up to 200,000 and the maximum magnetic permeability is higher than 800,000. However, the μe value measured at 10KHz is only about 60, which is far less than the metal soft magnetic powder core.

3 low loss, good frequency stability, wide frequency range of use. Metal soft magnetic powder cores of various materials and different magnetic permeability can be used in a wide frequency band from tens of hertz to as high as 30 MHz. This property is far from the metal soft magnetic and amorphous microcrystalline soft magnetic.

4 Because of the above three advantages, the metal soft magnetic powder core has good AC-DC stacking stability. This is important for the simultaneous use of many AC and DC fields. This is also where it is superior to several other soft magnetic materials.

5 has good magnetic performance stability. This feature is very important for the use and quality of the product. If magnetic performance stability cannot be guaranteed, very sophisticated instruments can become unusable and cause damage. Metal soft magnetic powder cores are superior to other types of materials in terms of frequency stability and temperature stability.

6 It also has a very important and unique characteristic that is not possessed by any other soft magnetic material, that is, it has good performance controllability. That is to say, in the production process of various types of metal soft magnetic powder cores, people can produce various metal soft magnetic powder cores with unique properties by controlling and changing the technical conditions of their production processes, thereby maximally satisfying various uses. Various requirements under the conditions. This is very important for improving the performance and quality of the product, especially for the high-tech and defense industry.

Mirrack (Guangdong) Micro Metal Magnet Tech. Co., Ltd. is a hi-tech company specializing in R&D & manufacturing of high quality alloy powder cores, as well as a solution provider for a variety of magnetics applications. Email: danny@mirrack.com