Amorphous magnetic core, consists of a ferromagnetic amorphous alloys produced by ferromagnetic core.
In the past thousands of years, metals or alloys are used by humans and amorphous structure material, its atomic orderly arranged in a three-dimensional space, the formation of periodic lattice structure.
And amorphous metal or alloy, also called metal glass, refers to the metal or alloy is melted through some form of non-equilibrium process is a kind of amorphous (
Also known as glass state)
The structure of the material, usually by molten state by rapid quenching.
Orderly arrangement due to metal or alloy solidification atom when too late, metal or alloy crystallization process, such as nucleation, growth and keep at room temperature or low temperature liquid atoms arranged condensed state, the atom no longer arrange orderly growth path, periodic and rules, but in a state of long-range disordered arrangement, therefore give amorphous materials many special performance, for example, high strength and hardness, good corrosion resistance and soft magnetism, watt, eyring watt, superconductivity, resistance to radiation damage, etc.
Therefore, can be widely used in manufacturing industry, such as used in the manufacture of cutting tools, springs, gears, electrode, magnetic head, magnetic separator, sensors, transformers and composite materials, etc.
In the literature, the term 'amorphous', 'amorphous', 'glass state' and 'amorphous' exchange use.
Ferromagnetism can is an important aspect of crystal alloy striking.
Has a ferromagnetic amorphous alloy of gold is also called the ferromagnetic metal or magnetic glass (
, it has high saturation magnetization, low coercive force, high permeability and large magnetostriction coefficient.
In order to convenient, all of the following are referred to as the amorphous alloy.
Magnetic loss of amorphous alloy is lower than other known and amorphous alloy.
Resistivity of amorphous alloy than similar high crystalline state, and the resistivity negative temperature coefficient is small, so can reduce the eddy current loss of the materials.
Thin amorphous alloy belt, the high frequency performance is excellent, under the high frequency of 1 MHZ, 5.
5 microns thick amorphous alloy iron core loss for 2/5 of the high frequency ferrite, is only 1/3 of the super permalloy.
For amorphous soft magnetic alloy, according to the application can be divided into high saturation magnetic induction intensity and high permeability of two kinds of amorphous soft magnetic alloy.
Points, according to its main components can be divided into: (
With high saturation magnetic induction intensity of Fe base soft magnetic alloy;
Medium saturated magnetic induction intensity and Fe - good soft magnetic properties
Ni base amorphous alloy;
With saturated magnetostrictive coefficient is close to zero in the excellent soft magnetic properties of cobalt base alloy.
Iron-based amorphous iron core: in almost all of the amorphous alloy iron core with the highest saturated magnetic induction intensity (
45 t ~ 1。
, at the same time has high permeability, low coercive force, low loss, low exciting current and good temperature stability and ageing stability.
Replace silicon steel sheet is mainly used for, for all kinds of forms, different power distribution transformers, intermediate frequency power frequency transformer, working frequency from 50 hz to 10 KHZ.
As a high power switch power reactor core, use frequency can reach 50 KHZ.
Iron nickel base amorphous iron core: medium low saturated magnetic induction intensity (
, high permeability, low coercivity, wear-resisting corrosion resistance, good stability.
Used to replace permalloy core as the leakage switch of the zero sequence current transformer core
Cobalt-based amorphous iron core: of all the amorphous alloy iron core with the highest permeability, at the same time, medium low saturated magnetic induction intensity (
, low coercive force, low loss, excellent wear resistance and corrosion resistance, good temperature stability and aging stability, impact resistance vibration.
Is mainly used to replace permalloy core and ferrite core production of high-frequency transformer, filter inductance, magnetic amplifier and pulse transformer, such as pulse compressor applied in the field of high-end.
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