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

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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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 alloy thin strips. Stable control of the content, and the thermal stability of N-containing alloys is poor, so they cannot be used at high temperatures

[0012] In summary, there is still a lack of iron-based amorphous soft magnetic alloys and their products with high saturation magnetic induction and low cost characteristics in the market, so there is still a need for iron with high saturation magnetic induction and low cost in this field. The need for base amorphous soft magnetic alloys

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