Low-cost high-saturation magnetic induction intensity iron-based amorphous soft magnetism alloy

An iron-based amorphous and soft magnetic alloy technology, applied in the direction of magnetic objects, magnetic materials, electrical components, etc., can solve the problems of thermal stability decline, easy to catch fire, and strips are prone to brittleness, etc., and achieve strong amorphous formation ability , high saturation magnetic induction and low cost

Active Publication Date: 2010-09-22
AT&M AMORPHOUS TECH CO LTD
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Problems solved by technology

Studies have shown that when the C content is higher than 3at%, the preparation conditions of the alloy are harsh, it is easy to catch fire, the prepared strip is easy to become brittle, and the thermal stability decreases
[0008] Chinese patent CN101194039A discloses a Fe-Si-B-C-P-N multi-component alloy containing N elements, but experiments show that due to the ultra-low solid solubility of N in molten steel, according to the prior art, it is difficult to realize N in amorphous allo

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  • Low-cost high-saturation magnetic induction intensity iron-based amorphous soft magnetism alloy
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  • Low-cost high-saturation magnetic induction intensity iron-based amorphous soft magnetism alloy

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[0021] In the iron-based amorphous alloy with low cost and high saturation magnetic induction of the present invention, firstly, the Mn element can suppress the crystallization caused by impurity elements on the surface of the amorphous alloy, and improve the soft magnetic properties; secondly, the addition of Mn can effectively Inhibit strip embrittlement caused by impurity element S in the alloy, because Mn and S easily form MnS compound in molten steel. The inventors found that under the condition of rapid cooling and the presence of Sn and Sb elements in the present invention, MnS does not exist in the form of large block or chain inclusions, but in the form of tiny The particles are uniformly distributed inside the alloy, and thus the embrittlement and soft magnetic property deterioration caused by S elements are minimized; finally, when the Mn content is controlled below 0.5 at%, not only the surface quality of the amorphous alloy can be improved, It can also moderately ...

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Abstract

The invention provides a low-cost high-saturation magnetic induction intensity iron-based amorphous soft magnetism alloy. The alloy comprises the following ingredients in percentage by atoms: 0 to 15 of Si, 3 to 20 of B, 0.001 to 12 of P, 0.001 to 5 of C, 0.0001 to 0.1 of Al, 0.001 to 0.5 of Mn, 0.0001 to 0.5 of Sb, 0.0001 to 0.1 of Ti, 0.0001 to 0.5 of S, 0.0001 to 0.5 of Sn, 0.0003 to 0.2 of W and the balance of Fe and unavoidable impurities. The soft magnetism alloy of the invention has the characteristics of strong amorphous forming capability, high saturation magnetic induction intensity, low cost and the like. After the alloy is annealed, the saturation magnetic induction intensity is higher than 1.6 T, and the coercive force is lower than 5A/m.

Description

technical field [0001] The invention relates to the field of magnetic functional materials, in particular to an iron-based amorphous soft magnetic alloy with low cost and high saturation magnetic induction. Background technique [0002] After the advent of amorphous soft magnetic materials, especially iron-based amorphous alloys, they have the characteristics of high resistivity, high magnetic permeability, and very low loss (only equivalent to 1 / 3 to 1 / 5 of grain-oriented silicon steel). In addition, compared with silicon steel, the process is simple and no special processing is required, so it is considered to be an ideal core material for power transformers. The research work on using amorphous alloy instead of thin silicon steel as the iron core of power transformers started almost at the same time as the production of iron-based amorphous strips. [0003] However, compared with silicon steel, iron-based amorphous alloy still has its disadvantages, that is, the filling ...

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Application Information

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IPC IPC(8): H01F1/153C22C45/02
Inventor 周少雄董帮少陈文智刘国栋卢志超李德仁
Owner AT&M AMORPHOUS TECH CO LTD
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