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Magnetic copper-nickel-iron-cobalt alloy thin strip and preparation method therefor

A technology of magnetic alloys and iron-cobalt alloys, applied in the fields of magnetic materials, magnetic objects, inductors/transformers/magnets, etc., can solve ingot segregation, copper-nickel-iron magnetic alloy strips have not been seen, and are not suitable for thermal processing and other problems, to achieve the effect of high remanence and saturation magnetization

Inactive Publication Date: 2017-08-18
HEBEI UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The magnetic properties of copper-nickel-iron alloys with existing elemental components still need to be further improved, and the ingots have serious segregation problems, which are not suitable for hot processing. In addition, there have been no literature reports on copper-nickel-iron magnetic alloy strips

Method used

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  • Magnetic copper-nickel-iron-cobalt alloy thin strip and preparation method therefor
  • Magnetic copper-nickel-iron-cobalt alloy thin strip and preparation method therefor
  • Magnetic copper-nickel-iron-cobalt alloy thin strip and preparation method therefor

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0049] Prepare the element composition formula as Cu 35 Ni 25 Fe 20 co 20 Copper-nickel-iron-cobalt magnetic alloy thin strip product, the thickness of the thin strip is 63μm, and the magnetic properties are measured on a vibrating sample magnetometer with an external magnetic field of 20kOe. The coercive force is 368.3Oe, the remanence is 6.6emu / g, and the saturation The magnetization is 102.6emu / g.

[0050] The first step is to prepare raw materials:

[0051] Calculate the element composition formula Cu according to the atomic percentage of the element 35 Ni 25 Fe 20 co 20 The mass percentage of the constituent elements in the mass percentage, take the required amount of component raw materials according to the mass percentage: pure Cu, pure Ni, pure Fe, pure Co, thus complete the preparation of raw materials;

[0052] The second step is to melt the raw materials to prepare copper-nickel-iron-cobalt master alloy ingots:

[0053] Put all the raw materials prepared in...

Embodiment 2

[0062] Prepare the element composition formula as Cu 50 Ni 20 Fe 15 co 15 Copper-nickel-iron-cobalt magnetic alloy thin strip product, the thickness of the thin strip is 65μm, and the magnetic properties are measured on a vibrating sample magnetometer with an external magnetic field of 20kOe. The coercive force is 325.4Oe, the remanence is 7.5emu / g, and the saturation The magnetization is 90.9emu / g.

[0063] The first step is to prepare raw materials:

[0064] Calculate the element composition formula Cu according to the atomic percentage of the element 50 Ni 20 Fe 15 co 15 The mass percentage of the constituent elements in the mass percentage, take the required amount of component raw materials according to the mass percentage: pure Cu, pure Ni, pure Fe, pure Co, thus complete the preparation of raw materials;

[0065] The second step is to melt the raw materials to prepare copper-nickel-iron-cobalt master alloy ingots:

[0066] Put all the raw materials prepared in ...

Embodiment 3

[0075]Prepare the element composition formula as Cu 55 Ni 17.5 Fe 13.75 co 13.75 Copper-nickel-iron-cobalt magnetic alloy thin strip product, the thickness of the thin strip magnet product is 58μm, and the magnetic properties are measured on a vibrating sample magnetometer with an external magnetic field of 20kOe. The coercive force is 353.4Oe and the residual magnetism is 6.6emu / g , The saturation magnetization is 85.0emu / g.

[0076] The first step is to prepare raw materials:

[0077] Calculate the element composition formula Cu according to the atomic percentage of the element 55 Ni 17.5 Fe 13.75 co 13.75 The mass percentage of the constituent elements in the mass percentage, take the required amount of component raw materials according to the mass percentage: pure Cu, pure Ni, pure Fe, pure Co, thus complete the preparation of raw materials;

[0078] The second step is to melt the raw materials to prepare copper-nickel-iron-cobalt master alloy ingots:

[0079] Put...

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Abstract

The invention discloses a magnetic copper-nickel-iron-cobalt alloy thin strip and a preparation method therefor and relates to a copper base alloy in which cobalt is a secondary major ingredient. The general formula of the elemental composition of the magnetic copper-nickel-iron-cobalt alloy thin strip is CuxNiyFezCow; the preparation method of the thin strip comprises the steps of changing the proportioning of the composition of a magnetic copper-nickel-iron-cobalt alloy and adopting a melt-spun preparation method to prepare the magnetic copper-nickel-iron-cobalt alloy thin strip with better magnetism and composition uniformity, so as to overcome the problems of a copper-nickel-iron alloy of an existing elemental composition that the magnetism needs to be improved while a cast ingot has serious segregation, and the defect that the existing copper-nickel-iron alloy is not suitable for hot working is also overcome.

Description

technical field [0001] The technical solution of the invention relates to a copper-based alloy with cobalt as the secondary main component, specifically a copper-nickel-iron-cobalt magnetic alloy strip and a preparation method thereof. Background technique [0002] Copper-nickel-iron permanent magnet alloy is not only an important milestone in the development of permanent magnet materials, but also will be widely used in many electromagnetic devices, such as sensors, speakers, listening devices and earphones. Compared with other permanent magnet materials, copper-nickel-iron Permanent magnetic alloy has the advantages of wide hysteresis loop, high coercive force and high remanence, and is favored because of its excellent mechanical properties and does not contain expensive rare earth elements. [0003] In 1935, Newman proposed the copper-nickel-iron permanent magnet alloy for the first time and studied its magnetic properties. In the early 1950s, Geisler (Geisler A H. Coerc...

Claims

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Application Information

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IPC IPC(8): H01F1/047H01F41/00H01F41/02C22C30/02C22C9/06C22C1/03B22D11/06
CPCB22D11/06C22C1/03C22C9/06C22C30/02H01F1/047H01F41/0253
Inventor 孙继兵张策步绍静殷福星崔春翔张磊
Owner HEBEI UNIV OF TECH
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