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Magnetically soft alloy having high initial magnetic conductivity and used under high-frequency condition

A technology of initial magnetic permeability and soft magnetic alloy, which is applied in the direction of magnetic materials, electrical components, magnetic objects, etc., can solve the problem of low quality factor, and achieve the effects of superior high-frequency performance, low cost, and simple preparation process

Inactive Publication Date: 2014-09-03
TIANJIN UNIVERSITY OF TECHNOLOGY
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  • Abstract
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Problems solved by technology

But in Fe 73.5 Cu 1 Nb 3 Si 13.5 B 9 The quality factor of the nanocrystalline alloy formed by substituting Co partly for Fe in the alloy is not high. Under the condition of 1MHz, (Fe 0.5 co 0.5 ) 73.5 Cu 1 Nb 3 Si 13.5 B 9 The quality factor of the nanocrystalline alloy is slightly greater than 1

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  • Magnetically soft alloy having high initial magnetic conductivity and used under high-frequency condition
  • Magnetically soft alloy having high initial magnetic conductivity and used under high-frequency condition

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Embodiment

[0021] A soft magnetic alloy with high initial magnetic permeability for high-frequency conditions, composed of Fe, Co, Cu, Nb, Si and B, the mass percentage of each component is: Fe15.38%, Cu0.6% , Nb2.5%, Si11%, B9%, and the balance is Co; the soft magnetic alloy is represented by the general chemical formula (Fe 1-x co x ) 76.9 Cu 0.6 Nb 2.5 Si 11 B 9 , where: x=0.8.

[0022] The preparation method of the soft magnetic alloy which is used under high frequency conditions and has high initial magnetic permeability, the steps are as follows:

[0023] 1) Preparation of amorphous alloy

[0024] According to the mass percentage, Fe, Co, Cu, Nb, Si and B components with a purity of not less than 99.9% are mixed evenly, melted into a master alloy ingot in a vacuum induction furnace, and the weight loss is 3%, and it is used after cooling to room temperature The composition is Fe 15.38 co 61.52 Cu 0.6 Nb 2.5 Si 11 B 9 An amorphous alloy strip with a width of 5 mm and a t...

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Abstract

The invention relates to a magnetically soft alloy having high initial magnetic conductivity and used under a high-frequency condition. The magnetically soft alloy comprises the following components by mass percent: 15.38 percent of Fe, 0.6 percent of Cu, 2.5 percent of Nb, 11 percent of Si, 9 percent of B and the balance being Co. The preparation method comprises the following steps: uniformly mixing the components according the mass percent, smelting the mixture in a vacuum induction furnace to form master alloy ingot, and producing an amorphous alloy strip through a single-roll melt rotating fast quenching method after the master alloy ingot is cooled; and heating, preserving the heat and cooling the amorphous alloy strip in a magnetic-field-free vacuum tubular furnace. The magnetically soft alloy has the advantages that the preparation process is simple and the cost is low; the high-frequency performance is excellent, and the relaxation frequency reaches up to 5.03MHz; the quality factor of the magnetically soft alloy is 5.08 under the condition of 1MHz; the initial magnetic conductivity is maintained at 260 under the condition that the frequency is 1kHz to 1MHz and the magnetic field is 0.05A / m.

Description

technical field [0001] The invention relates to the field of soft magnetic materials with magnetic functions, in particular to a soft magnetic alloy used in high frequency conditions and having high initial magnetic permeability. Background technique [0002] Soft magnetic materials refer to those metal magnetic materials with low coercive force and high magnetic permeability. It has important and extensive applications in electricity, electronics and modern new technologies, especially with the development of high-frequency technology, higher requirements are put forward for the high-frequency characteristics of soft magnetic materials, generally the requirements for soft magnetic materials It is high magnetic permeability and low loss. When it is applied to high frequency, it is required to have high magnetic permeability and low loss in a wide frequency range, that is, a good high quality factor. Magnetic permeability is one of the basic parameters of soft magnetic mater...

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Application Information

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IPC IPC(8): H01F1/153C22C45/04C22C1/03
Inventor 丁燕红田瑞洁薛珂苏永志马叙王晓姹
Owner TIANJIN UNIVERSITY OF TECHNOLOGY
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