High-effective-magnetic-permeability cobalt-nickel based microcrystalline magnetic material and preparation method thereof

Abstract

The invention provides a high-effective-magnetic-permeability cobalt-nickel based microcrystalline magnetic material and a preparation method thereof. The material reduces the cobalt content under the condition of guaranteeing better soft magnetic properties. The preparation method is simple in process, low in production cost and suitable for industrial production. The material comprises the following components in percentage by weight: 18-22% of Fe, 30-35% of Ni, 4-7% of Gd, 0.01-0.05% of Ho, 0.1-0.5% of V, 0.01-0.05% of Ru, 6-9% of Al, 1-3% of P1, and the balance of Co.

Description

technical field

[0001] The invention belongs to the technical field of metal materials, and relates to a cobalt-nickel-based microcrystalline magnetic material with high effective magnetic permeability and a preparation method. Background technique

[0002] Application No. 200910096940.4 discloses a cobalt-based bulk amorphous alloy. The simplified molecular formula of the alloy is CoaFebNbcB22.4Si5.6, and satisfies 60<a<65, 2<b<5, 3<c<7. The invention also discloses a preparation method of the cobalt-based bulk amorphous alloy. The saturation magnetic induction Is of the obtained alloy is above 0.1T and below 0.8T; the coercive force Hc is below 0.8A / m and above 0.1A / m; the effective magnetic permeability, μc (1KHz) is above 10000 and below 60000. The disadvantage of this alloy is that the effective magnetic permeability is not high enough, and the cobalt content is large. Contents of the invention

[0003] The purpose of the present invention is to pr...

Examples

Embodiment 1

[0026] The preparation method of the high effective magnetic permeability cobalt nickel base microcrystalline magnetic material of the present invention, concrete steps are as follows:

[0027] (1) First, according to the weight percentage: Fe 18%, Ni 30%, Gd 4%, Ho 0.01%, V 0.1%, Ru 0.01%, Al 6%, P1%, and the rest is Co for batching. The purity of Fe, Ni, Ho, V, Ru, Al, and Co in the raw materials is greater than 99.9%, Gd is added in the form of iron-gadolinium master alloy, and the weight percentage of Gd in the iron-gadolinium alloy is 35%; P is made of iron-phosphorus master alloy The way to add, the weight percentage of P in the iron-phosphorus alloy is 25%.

[0028] (2) Melting the raw materials in a vacuum induction furnace at a melting temperature of 1520°C, pouring and cooling to obtain a master alloy;

[0029] (3) Then put the master alloy into the remelting tubular crucible for remelting, the remelting temperature is 1505°C; the remelting tubular crucible vacuum i...

Embodiment 2

[0032] High effective permeability cobalt-nickel-based microcrystalline magnetic material alloy composition weight percent: Fe 22%, Ni 35%, Gd 7%, Ho 0.05%, V 0.5%, Ru 0.05%, Al 9%, P 3%, The rest are Co. Its preparation process is with embodiment one.

Embodiment 3

[0034] High effective permeability cobalt-nickel-based microcrystalline magnetic material alloy composition weight percent: Fe 20%, Ni 33%, Gd6%, Ho 0.04%, V 0.3%, Ru 0.03%, Al 7%, P 2%, the rest For Co. Its preparation process is with embodiment one.

technical field

[0001] The invention belongs to the technical field of metal materials, and relates to a cobalt-nickel-based microcrystalline magnetic material with high effective magnetic permeability and a preparation method. Background technique

[0002] Application No. 200910096940.4 discloses a cobalt-based bulk amorphous alloy. The simplified molecular formula of the alloy is CoaFebNbcB22.4Si5.6, and satisfies 60<a<65, 2<b<5, 3<c<7. The invention also discloses a preparation method of the cobalt-based bulk amorphous alloy. The saturation magnetic induction Is of the obtained alloy is above 0.1T and below 0.8T; the coercive force Hc is below 0.8A / m and above 0.1A / m; the effective magnetic permeability, μc (1KHz) is above 10000 and below 60000. The disadvantage of this alloy is that the effective magnetic permeability is not high enough, and the cobalt content is large. Contents of the invention

[0003] The purpose of the present invention is to pr...

Examples

Embodiment 1

[0026] The preparation method of the high effective magnetic permeability cobalt nickel base microcrystalline magnetic material of the present invention, concrete steps are as follows:

[0027] (1) First, according to the weight percentage: Fe 18%, Ni 30%, Gd 4%, Ho 0.01%, V 0.1%, Ru 0.01%, Al 6%, P1%, and the rest is Co for batching. The purity of Fe, Ni, Ho, V, Ru, Al, and Co in the raw materials is greater than 99.9%, Gd is added in the form of iron-gadolinium master alloy, and the weight percentage of Gd in the iron-gadolinium alloy is 35%; P is made of iron-phosphorus master alloy The way to add, the weight percentage of P in the iron-phosphorus alloy is 25%.

[0028] (2) Melting the raw materials in a vacuum induction furnace at a melting temperature of 1520°C, pouring and cooling to obtain a master alloy;

[0029] (3) Then put the master alloy into the remelting tubular crucible for remelting, the remelting temperature is 1505°C; the remelting tubular crucible vacuum i...

Embodiment 2

[0032] High effective permeability cobalt-nickel-based microcrystalline magnetic material alloy composition weight percent: Fe 22%, Ni 35%, Gd 7%, Ho 0.05%, V 0.5%, Ru 0.05%, Al 9%, P 3%, The rest are Co. Its preparation process is with embodiment one.

Embodiment 3

[0034] High effective permeability cobalt-nickel-based microcrystalline magnetic material alloy composition weight percent: Fe 20%, Ni 33%, Gd6%, Ho 0.04%, V 0.3%, Ru 0.03%, Al 7%, P 2%, the rest For Co. Its preparation process is with embodiment one.

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