Iron-based amorphous nanocrystalline magnetically soft alloy and preparation method thereof

A nanocrystalline soft magnetic and amorphous nanocrystalline technology, which is applied in the field of nanocrystalline alloys, can solve the problems of increased coercive force and decreased magnetic permeability of iron-based nanocrystalline soft magnetic alloys, and achieves low coercive force and excellent preparation process. The effect of relaxed conditions and high magnetic permeability

Active Publication Date: 2016-11-16
ZHENGZHOU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

But relative to Fe 73.5 Si 13.5 B 9 Cu 1 Nb 3 For nanocrystalline soft magnetic alloys, the magnetic permeability of this type of iron-based nanocrystalline soft magnetic alloys decreases, and the coercive force increases.

Method used

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  • Iron-based amorphous nanocrystalline magnetically soft alloy and preparation method thereof
  • Iron-based amorphous nanocrystalline magnetically soft alloy and preparation method thereof
  • Iron-based amorphous nanocrystalline magnetically soft alloy and preparation method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0050] An iron-based amorphous nanocrystalline soft magnetic alloy Fe 78.32 Si 9.41 B 11.5 C 0.12 mn 0.49 P 0.13 Cu 0.02 Mo 0.01 (at%), denoted as D1, and its preparation method includes the following steps:

[0051] 1) Ingredients: Fe, Si, Mn, Cu, Mo and pre-alloyed FeB with a mass fraction of not less than 99.9% (Fe content and B content are 79.51wt% and 19.62wt% respectively, the same below), FeP (Fe content The amount of Fe and P are 75wt%, 24.98wt%, the same below), and FeC (the content of Fe and C are 95.7wt%, 4.3wt%, the same below) is proportioned according to the element ratio required by the alloy;

[0052] 2) Melting the master alloy: place the prepared raw materials in a non-consumable vacuum electric arc furnace, add Ti ingots for deoxidation, and evacuate to a vacuum degree of 5.0×10 -3 After Pa, argon gas is introduced, the purity is 99.99%, and the raw material is refined into a master alloy ingot by arc melting, and the master alloy ingot is repeated...

Embodiment 2

[0056] An iron-based amorphous nanocrystalline soft magnetic alloy Fe 77.36 Si 9.3 B 11.36 C 0.11 mn 0.49 P 0.12 Ni 1.23 Cu 0.02 Mo 0.01(at%), denoted as D2, its preparation method comprises the following steps:

[0057] 1) Ingredients: Fe, Si, Mn, Cu, Mo with a mass fraction not less than 99.9% and pre-alloyed FeB, FeP, FeC are proportioned according to the element ratio required by the alloy;

[0058] 2) Melting the master alloy: place the prepared raw materials in a non-consumable vacuum electric arc furnace, add Ti ingots for deoxidation, and evacuate to a vacuum degree of 5.2×10 -3 After Pa, argon gas with a purity of 99.99% is introduced, and the raw material is refined into a master alloy ingot by arc melting, and the master alloy ingot is repeatedly smelted 6 times to ensure the uniformity of the master alloy composition;

[0059] 3) Spray tape: After cutting the smelted master alloy, put it into a quartz tube with a nozzle at the bottom, when the vacuum deg...

Embodiment 3

[0062] An iron-based amorphous nanocrystalline soft magnetic alloy Fe 75.94 Si 9.13 B 11.15 C 0.11 mn 0.48 P 0.12 Cr 3.04 Cu 0.02 Mo 0.01 (at%), denoted as D3, its preparation method comprises the following steps:

[0063] 1) Ingredients: Fe, Si, Mn, Cu, Mo with a mass fraction not less than 99.9% and pre-alloyed FeB, FeP, FeC are proportioned according to the element ratio required by the alloy;

[0064] 2) Melting master alloy: place the prepared raw materials in a non-consumable vacuum electric arc furnace, add Ti ingots for deoxidation, and evacuate to a vacuum degree of 5.4×10 -3 After Pa, argon gas with a purity of 99.99% is introduced, and the raw material is refined into a master alloy ingot by arc melting, and the master alloy ingot is repeatedly smelted 6 times to ensure the uniformity of the master alloy composition;

[0065] 3) Spray tape: After cutting the smelted master alloy, put it into a quartz tube with a nozzle at the bottom, when the vacuum degr...

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Abstract

The invention relates to novel iron-based amorphous nanocrystalline magnetically soft alloy which can be directly obtained through rapid cooling without the need for annealing and a preparation method thereof. The composition of the magnetically soft alloy is FeaSibBcCdMnePfCrgNihCujMojCok except for unavoidable impurities. The iron-based amorphous nanocrystalline magnetically soft alloy has high saturated magnetic induction density Bs, low coercivity Hc, high and stable magnetic conductivity [mu]i and other excellent soft magnetic properties after stress relief annealing. Compared with existing nanocrystalline alloy applied in the industry and obtained through crystallization annealing, the annealing temperature is greatly lowered, and the iron-based amorphous nanocrystalline magnetically soft alloy does not contain or contain a trace of precious metal elements, so that the production cost is greatly lowered.

Description

technical field [0001] The invention belongs to the technical field of nanocrystalline alloys, in particular to a novel iron-based amorphous-nanocrystalline soft magnetic alloy which can be directly obtained by rapid cooling without annealing and a preparation method thereof. Background technique [0002] Iron-based amorphous and nanocrystalline alloys are a composite phase structure in which some fine α-Fe nanocrystals are uniformly distributed on an amorphous substrate, and the existence of fine and uniformly distributed α-Fe nanocrystals has an important effect on its comprehensive magnetic properties. optimization effect. In 1988, Yoshizawa (Yoshizawa Y et al. J Appl Phys, 1988, 64(10): 6044) of Hitachi Metals Corporation invented Fe-Si-B-Nb-Cu nanocrystalline soft magnetic material and named it "Finemet ", this alloy system is produced after the amorphous structure is prepared by the melt spin quenching method T x1 Nearby crystallization annealing forms nanocrystals...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C45/02H01F1/153
CPCC22C33/003C22C45/02C22C2200/02C22C2200/04H01F1/15308
Inventor 李福山张文帅陈吉祥魏然贾晓东高志开
Owner ZHENGZHOU UNIV
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