Nanocrystalline soft magnetic alloy materials

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.