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A kind of nanocrystalline soft magnetic alloy, amorphous soft magnetic alloy and preparation method thereof

A nanocrystalline soft magnetic and soft magnetic alloy technology, applied in the direction of magnetic objects, magnetic materials, inorganic materials, etc., can solve the problems of low amorphous forming ability, poor high-frequency magnetic properties, etc., to improve the amorphous forming ability, Improved toughness, high-quality effects

Active Publication Date: 2020-10-16
GLOBAL ENERGY INTERCONNECTION RES INST CO LTD +3
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  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0010] Therefore, the technical problem to be solved by the present invention is to overcome the defects of existing nanocrystalline soft magnetic alloys and amorphous soft magnetic alloys with poor high-frequency magnetic properties and low amorphous forming ability, thereby providing a nanocrystalline soft magnetic alloy, amorphous Soft magnetic alloy and preparation method thereof

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  • A kind of nanocrystalline soft magnetic alloy, amorphous soft magnetic alloy and preparation method thereof
  • A kind of nanocrystalline soft magnetic alloy, amorphous soft magnetic alloy and preparation method thereof
  • A kind of nanocrystalline soft magnetic alloy, amorphous soft magnetic alloy and preparation method thereof

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Embodiment 1

[0110] This embodiment provides a nanocrystalline soft magnetic alloy, its composition and atomic percentage are: Fe74.9at%, Mn 1at%, Cr 0.1at%, Cu 1at%, Si 18at%, B 4at%, Nb 1at %, that is, the molecular formula is Fe 74.9 mn 1 Cr 0.1 Cu 1 Si 18 B 4 Nb 1 .

[0111] The preparation method of nanocrystalline soft magnetic alloy comprises the following steps:

[0112] 1) Mix iron raw materials, manganese raw materials, chromium-containing alloy ingots, copper raw materials, silicon raw materials, boron-iron pre-alloyed ingots and niobium-iron pre-alloyed ingots according to the atomic percentage of the above-mentioned nanocrystalline soft magnetic alloy, and heat at 1200 ° C 60min, obtain high-temperature alloy molten steel;

[0113] 2) The high-temperature alloy molten steel is sprayed onto a 30m / s rotating copper roller through a nozzle of a certain shape by a melt quenching method to obtain an amorphous strip; the width of the amorphous strip is 100 mm, and the thickn...

Embodiment 2

[0116] This embodiment provides a nanocrystalline soft magnetic alloy, its composition and atomic percentage are: Fe74.5at%, Mn0.5at%, Cr1at%, Cu0.8at%, Si16.5at%, B5.5at% , Nb 1.2at%, that is, the molecular formula is Fe 74.5 mn 0.5 Cr 1 Cu 0.8 Si 16.5 B 5.5 Nb 1.2 .

[0117] The preparation method of nanocrystalline soft magnetic alloy comprises the following steps:

[0118] 1) Mix iron raw materials, manganese raw materials, chromium-containing alloy ingots, copper raw materials, silicon raw materials, boron-iron pre-alloyed ingots and niobium-iron pre-alloyed ingots according to the atomic percentage of the above-mentioned nanocrystalline soft magnetic alloy, and heat at 1400 ° C 20min, obtain high-temperature alloy molten steel;

[0119] 2) The high-temperature alloy molten steel is sprayed onto a 30m / s rotating copper roller through a nozzle of a certain shape by a melt quenching method to obtain an amorphous strip; the width of the amorphous strip is 10 mm, and ...

Embodiment 3

[0122] This embodiment provides a nanocrystalline soft magnetic alloy, its composition and atomic percentage are: Fe 74at%, Mn 2at%, Cu 1at%, Si 13at%, B 8at%, Nb 2at%, that is, the molecular formula is Fe 74 mn 2 Cu 1 Si 13 B 8 Nb 2 .

[0123] The preparation method of nanocrystalline soft magnetic alloy comprises the following steps:

[0124] 1) Mix iron raw materials, manganese raw materials, copper raw materials, silicon raw materials, boron-iron pre-alloyed ingots and niobium-iron pre-alloyed ingots according to the atomic percentage of the above-mentioned nanocrystalline soft magnetic alloy, and heat at 1350 ° C for 30 minutes to obtain a superalloy molten steel;

[0125] 2) The high-temperature alloy molten steel is sprayed onto a 30m / s rotating copper roller through a nozzle of a certain shape by a melt quenching method to obtain an amorphous strip; the width of the amorphous strip is 40 mm, and the thickness is 20 μm ;

[0126] 3) The nanocrystalline soft magn...

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Abstract

The invention provides a nanocrystalline magnetically soft alloy, an amorphous magnetically soft alloy and preparation methods of the nanocrystalline magnetically soft alloy and the amorphous magnetically soft alloy. The nanocrystalline magnetically soft alloy comprises the compositions of Fe, Cu, Si, B, and Nb, and further comprises at least one element between Mn and Cr, wherein the atomic percentage content of each element at the at least one between the Mn and the Cr is not more than 3.5 at%. The antiferromagnetism of the Mn element and / or the Cr element is utilized, and a heat treatment mode of multi-stage rate annealing is combined, so that the high-frequency magnetic permeability of the magnetically soft alloy is improved, the high-frequency loss of the magnetically soft alloy is reduced, and the high-frequency magnetic performance of the magnetically soft alloy is improved; meanwhile, the crystallization temperature interval is narrower, and the heat treatment temperature interval is wider, so that the high-quality nanocrystalline magnetically soft alloy or the high-quality amorphous magnetically soft alloy are obtained favorably and the preparation cost is reduced; and inaddition, the oxidation resistance of the Mn element and / or the Cr element is further utilized, so that the tolerance of impurities is improved, the surface of an amorphous strip is prevented from being crystallized, the amorphous forming capacity is improved, and the high-quality magnetically soft alloy can be prepared through low-purity commercial raw materials.

Description

technical field [0001] The invention relates to the field of magnetic functional materials, in particular to a nanocrystalline soft magnetic alloy, an amorphous soft magnetic alloy and a preparation method thereof. Background technique [0002] With the emergence of the energy crisis and the development of science and technology, the world is paying more and more attention to energy saving and low-carbon environmental protection. This requires electronic devices to develop in the direction of miniaturization, high efficiency, high frequency and low energy consumption. Traditional soft magnetic materials such as soft ferrite, silicon steel and permalloy, and existing amorphous soft magnetic alloys have problems such as poor high-frequency performance and poor stability, which cannot meet the needs of development. The above problems are mainly manifested in: (1) The high-frequency loss of soft ferrite is low and the cost is low, but the saturation magnetic induction and magne...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22C45/02C22C38/02C22C38/16C22C38/12C22C38/04C22C38/34C22C38/20C22C38/32C22C38/26C22C38/38C21D1/26H01F1/153H01F1/16
CPCC21D1/26C21D2201/03C22C33/003C22C38/02C22C38/04C22C38/12C22C38/16C22C38/20C22C38/26C22C38/32C22C38/34C22C38/38C22C45/02C22C2200/02C22C2200/04H01F1/15308H01F1/15333H01F1/15341H01F1/16
Inventor 杨富尧张博峻马光陈新韩钰程灵吴雪高洁刘洋何承绪贺爱娜董亚强黎嘉威
Owner GLOBAL ENERGY INTERCONNECTION RES INST CO LTD
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