Iron-based nanocrystalline soft magnetic alloy with low cost and high soft magnetic property

Abstract

The invention belongs to the field of preparing a soft magnetic alloy in functional materials, in particular relates to a novel iron-based nanocrystalline soft magnetic alloy material with excellent comprehensive performance, such as low cost, high saturation magnetic induction intensity, low loss, and the like. The novel iron-based nanocrystalline soft magnetic alloy material comprises the following chemical constituents by atomic percentage: 6-9 Si, 4-7 B, 3-6 P, 0.5-1.5 Cu, 0.05-0.15 Nb and the balance of Fe. Compared with traditional iron-based amorphous or nanocrystalline soft magnetic alloys, such as Metglas, Finemet, Nanoperm and the like, the iron-based nanocrystalline soft magnetic alloy greatly decreases the consumption of the noble element Nb, has the advantages of simple constituent design, low cost and excellent comprehensive performance of the materials by substituting low-price P for noble B, can substitute the prior silicon-steel sheets and iron-based amorphous or nanocrystalline soft magnetic alloys and can be widely applied to the fields, such as power transformers, mutual inductors, and the like.

Description

Technical field [0001] The invention belongs to the field of preparation of soft magnetic alloys in functional materials. It is especially suitable for the preparation of new iron-based nanocrystalline soft magnetic alloy materials with excellent comprehensive properties such as low cost, high saturation magnetic induction, and low loss. Background technique [0002] At present, silicon steel sheet has the highest saturation magnetic induction intensity among soft magnetic materials, which can reach 2.0T, so it is widely used in power transformers, transformers and other fields. However, the coercivity and loss of silicon steel sheets are relatively large. Therefore, from the perspective of energy saving, emission reduction and environmental protection, a new generation of soft magnetic materials with low loss and high magnetic properties should be developed. Iron-based amorphous and nanocrystalline soft magnetic alloys are considered to be ideal materials for power transformers...

AI Technical Summary

Problems solved by technology

However, these iron-based amorphous and nanocrystalline soft magnetic materials contain more precious elements such as B, Nb, Hf, Zr, etc., which greatly increase the cost of the material, and the increase in the content of these elements will make the content of Fe elements relatively reduced. This leads to a relatively low saturation magnetic induction of the alloy, so the power transformer made of them is relatively large.

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