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Nanocrystalline soft magnetic alloy materials

Nanocrystalline soft magnetic alloy materials

2021-07-19

Amorphous alloys are prepared by ultra rapid solidification technology


It is then cooled to form a solid thin strip with a thickness of (002-004m). It's out


At present, it is internationally recognized as two major changes in the field of metal materials.


First, in terms of process technology, liquid metals are produced at a rate of 1 million degrees Celsius per second


It can be solidified into thin metal strip rapidly with a cooling rate of 0.5%, which can save forging and heat


More than ten traditional processes, such as rolling and cold rolling, can save about 80% of processing energy and increase production efficiency


The finished product rate of high steel strip is more than 30%. Second, in terms of material properties, due to


During rapid solidification, the amorphous alloy maintains the structure of liquid metal approximately,


The atoms are disorderly distributed, and there is no crystal, which shows a lot of traditional gold


It belongs to the comprehensive properties that materials cannot obtain, such as excellent magnetism and corrosion resistance


Good mechanical and electrical properties, high strength, high hardness, high toughness, high resistance


Coupling performance, etc.


Nanocrystalline alloy is a kind of amorphous alloy in which a small amount of carbon is added


M (M = Cu, Si, Nb, Ta, Mo, Zn, Ta, W, etc.)


After heat treatment, crystallization and annealing, a BCC Structure with a diameter of about


The results show that (10-20) mm ultrafine grains are dispersed on the amorphous matrix.


This nanocrystalline alloy material not only retains the properties of amorphous alloy


It also has more excellent soft magnetic properties.


FeCuNbSiB nanocrystalline alloys are typical alloys with excellent comprehensive properties


Kim. FeCuNbSiB nano soft magnetic alloy has been compared with other soft magnetic materials


It is found that other kinds of soft magnetic materials are the same


For example, the advantages of Co based amorphous are as follows


The advantage of Fe based amorphous is high saturation magnetic induction


The advantage of super permalloy lies in its high initial permeability and excellent properties of silicon steel


The potential lies in the high saturation magnetic induction and low cost. The advantage of ferrite lies in the low cost


Low high frequency loss. However, FeCuNbSiB nanocrystalline alloys have many advantages


The comprehensive advantages of this aspect.


Due to its excellent properties, simple production process and low cost


It is cheap and develops rapidly. As a high-tech product, a large number of


Nanocrystalline alloy products are gradually replacing permalloy and high performance ferrite


In order to meet the demand of electronic industry for high frequency, high current, miniaturization, high-speed, high-speed, high-speed, high-speed, high-speed, high-speed, high-speed, high-speed, high-speed, high-speed, high-speed, high-speed


Energy saving direction.

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