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An iron-based sub-nanometer alloy with good production processability and preparation method thereof

A nano-alloy and production process technology, applied in the field of new sub-nano soft magnetic alloy materials, can solve the problems of uneven structure, harsh preparation conditions, coarse α-Fe crystal grains, etc., and achieves short heat treatment time and stable heat treatment process. , the effect of high saturation magnetic induction

Active Publication Date: 2019-03-15
NINGBO ZHONGKE BIPULASI NEW MATERIAL TECH CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0007] The problem to be solved by the present invention is to propose an innovative solution for the shortcomings of the above-mentioned prior art to effectively solve the existing high B S Nanocrystalline soft magnetic alloys have strict requirements on preparation conditions, and are prone to problems such as uneven structure and formation of coarse α-Fe grains in the process of production, preparation and heat treatment, and provide a good production process and excellent soft magnetic properties. Novel alloy of the present invention——iron-based subnano-alloy and its preparation method
[0008] For high B S Nanocrystalline soft magnetic alloys are prone to problems such as inhomogeneous structure and formation of coarse α-Fe grains in the production, preparation and heat treatment process. The inventors have proposed to use Cu and M atoms (M is one of Ti, Zr and Hf) One or more) to form ordered clusters of CuM B2 phase, and induce the precipitation of subnanoscale α-Fe crystal nuclei to suppress the formation of α-Fe coarse grains, and develop a new type of Fe-Si-B-P-C- Cu-M series sub-nanometer alloys, which form uniform nanoscale α-Fe grains during heat treatment, have excellent soft magnetic properties [patent application number: 201611151619.8]

Method used

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  • An iron-based sub-nanometer alloy with good production processability and preparation method thereof
  • An iron-based sub-nanometer alloy with good production processability and preparation method thereof
  • An iron-based sub-nanometer alloy with good production processability and preparation method thereof

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Embodiment 1

[0045] Embodiment 1: In this embodiment, the chemical formula of the iron-based sub-nanometer alloy is Fe 77 Si 4 B 16.5 Cu 1.2 Zr 1.3 .

[0046] The preparation of the iron-based sub-nanometer alloy and its subsequent heat treatment method are as follows:

[0047] (1) Fe, Si, Cu, Zr and Fe-B alloy raw materials with a purity greater than 99% are batched according to the chemical formula of the alloy composition;

[0048] (2) Place the raw materials prepared in step (1) in a high-frequency induction melting furnace, and vacuumize to 1×10 -2 Below Pa, then fill in an appropriate amount of high-purity argon, melt the prepared raw materials in an argon atmosphere, and keep warm for 30 minutes after all the raw materials are melted, so that the alloy raw materials can be melted evenly, and then pour the molten steel into the casting copper mold , cooling to obtain a master alloy ingot;

[0049] (3) Break the master alloy ingot, put an appropriate amount into a quartz tube w...

Embodiment 2-7

[0057] The specific composition of each alloy is shown in Table 1.

[0058] The preparation, heat treatment, structure and performance testing process of the sub-nanometer alloy strip in this series of embodiments, except that the smelting temperature, the speed of the strip-making copper roll and the heat treatment process parameters are different from those in Example 1, the remaining methods and process parameters are the same as those in Example 1. The same as that of embodiment 1.

[0059] The main magnetic performance indicators of the alloy strips in this series of examples before and after heat treatment are shown in Table 1. As can be seen from the table, after heat treatment, the B of all the example alloys S significantly increased, and H c Significantly decreased, the comprehensive soft magnetic performance has been significantly improved.

Embodiment 8

[0060] Embodiment 8: In this embodiment, the chemical formula of the iron-based sub-nanometer alloy is Fe 78 Si 4 B 16 Cu 1.3 Ti 0.7 .

[0061] The preparation of the iron-based sub-nanometer alloy and its subsequent heat treatment method are as follows:

[0062](1) Fe, Si, Cu, Ti and Fe-B alloy raw materials with a purity greater than 99% are batched according to the chemical formula of the alloy composition;

[0063] (2) Place the raw materials prepared in step (1) in a high-frequency induction melting furnace, and vacuumize to 1×10 -2 Below Pa, then fill in an appropriate amount of high-purity argon, melt the prepared raw materials in an argon atmosphere, and keep warm for 30 minutes after all the raw materials are melted, so that the alloy raw materials can be melted evenly, and then pour the molten steel into the casting copper mold , cooling to obtain a master alloy ingot;

[0064] (3) Break the master alloy ingot, put an appropriate amount into a quartz tube with...

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Abstract

The invention discloses an iron-based subnano alloy with good production processability and a preparation method thereof. The composition expression of the alloy is Fe a Si b B c Cu d m e x f , where M is at least one element of Ti, Zr and Hf, X is at least one element of C, Ge, V, Cr, Mn, Mo, W, Zn and Sn, and satisfies the following conditions: 75≤a ≤86, 2≤b≤9, 10≤c≤20, 0

Description

technical field [0001] The invention relates to soft magnetic materials in the field of functional materials, in particular to a novel subnano soft magnetic alloy material. Background technique [0002] At present, the magnetic core materials commonly used in electric power and electronic devices mainly include silicon steel, ferrite, permalloy, amorphous soft magnetic alloy and nanocrystalline soft magnetic alloy. Amorphous and nanocrystalline soft magnetic alloys have higher saturation magnetic induction (B S ), low loss and high magnetic permeability, and has been widely used in energy-saving, high-efficiency, and high-precision power electronic devices in recent years. [0003] At present, power electronic devices are developing in the direction of energy saving, miniaturization, high efficiency and high precision, which puts forward higher requirements on the performance of the magnetic core material which plays the role of electromagnetic conversion function, and has ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22C45/02C22C1/03H01F1/153
CPCH01F1/14766H01F1/15333H01F1/15341C22C1/03C22C45/02C22C1/11
Inventor 门贺郭海霍利山
Owner NINGBO ZHONGKE BIPULASI NEW MATERIAL TECH CO LTD
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