SMCO5 permanent magnet strip magnet and preparation method thereof

A technology of thin strips and permanent magnets, applied in the direction of magnetic objects, inductance/transformer/magnet manufacturing, magnetic materials, etc., can solve the problems of great difference in performance theoretical values, degradation of other performances, and no rules to follow, so as to improve the correction Coercive force, increase magnetization, and increase the effect of magnetocrystalline anisotropy

Inactive Publication Date: 2018-11-27
HEBEI UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] The technical problem to be solved by the present invention is: to provide SmCo 5 Permanent thin strip magnet and its preparation method, the SmCo 5 The general formula of the element composition of the permanent thin strip magnet is Sm x co y al z Cu u Fe v , through the SmCo 5 Al-Cu-Fe alloys are added in different amounts in the alloy composition, which is equivalent to the SmCo 5 Al-Cu-Fe alloy composition elements are regularly added in multi-elements in the alloy to form a multi-element and multi-phase strengthening mechanism, and the general formula of the element composition is Sm x co y al z Cu u Fe v SmCo 5 Permanent thin-strip magnets overcome the existing technology by adding a single element, while improving one or a limited number of properties of the magnet material, it often leads to a reduction or change in other properties, so that the properties are far from the theoretical value. When adding multiple elements at the same time, there is no rule to follow, which brings inconvenience to the follow-up research

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  • SMCO5 permanent magnet strip magnet and preparation method thereof
  • SMCO5 permanent magnet strip magnet and preparation method thereof
  • SMCO5 permanent magnet strip magnet and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0040] Prepare the element composition formula as Sm 15.76 co 77.78 al 5.35 Cu 1.09 Fe 0.01 SmCo 5 Permanent thin strip magnet product, the thickness of the thin strip is 46μm, its intrinsic coercive force is 30.7kOe at room temperature, the residual magnetization is 55.4emu / g, and the saturation magnetization is 70.5emu / g.

[0041] The first step, raw material preparation:

[0042] According to the atomic percentage, the element composition formula is calculated as Sm 15.76 co 77.78 al 5.35 Cu 1.09 Fe 0.01 The mass percentage of the constituent elements in the composition, weigh the required amount of component raw materials according to the mass percentage: pure Sm, pure Co, pure Al, pure Cu, pure Fe, and additionally add the pure The mass percentage of Sm is 5% pure Sm, thus completes the raw material preparation;

[0043] The second step is to melt the raw materials to prepare master alloy ingots:

[0044] Put the raw materials prepared in the first step into the...

Embodiment 2

[0051] Prepare the element composition formula as Sm 15.76 co 77.78 al 5.35 Cu 1.09 Fe 0.01 SmCo 5 Permanent thin strip magnet products, the thickness of the thin strip is 84μm, the intrinsic coercive force is 16.2kOe, the residual magnetization is 32.4emu / g, and the saturation magnetization is 38.2emu / g at room temperature.

[0052] The first step, raw material preparation:

[0053] With embodiment 1;

[0054] The second step is to melt the raw materials to prepare master alloy ingots:

[0055] With embodiment 1;

[0056] The third step, SmCo 5 Preparation of quick-quenched ribbon:

[0057] Sm obtained in the second step 15.76 co 77.78 al 5.35 Cu 1.09 Fe 0.01 The master alloy ingot is placed in a vacuum quenching furnace, and the furnace body is evacuated until the vacuum degree in the furnace body reaches 5×10 -2 Below Pa, then fill it with argon, re-melt the master alloy ingot by arc melting, and then quench the melt on a cooling copper roller rotating at a p...

Embodiment 3

[0062] Prepare the element composition formula as Sm 15.76 co 77.78 al 5.35 Cu 1.09 Fe 0.01 SmCo 5 Permanent thin strip magnet product, the thickness of the thin strip is 62μm, its intrinsic coercive force is 21.8kOe at room temperature, the residual magnetization is 46.2emu / g, and the saturation magnetization is 54.4emu / g.

[0063] The first step, raw material preparation:

[0064] With embodiment 1;

[0065] The second step is to melt the raw materials to prepare master alloy ingots:

[0066] With embodiment 1;

[0067] The third step, SmCo 5 Preparation of quick-quenched ribbon:

[0068] Sm obtained in the second step 15.76 co 77.78 al 5.35 Cu 1.09 Fe 0.01 The master alloy ingot is placed in a vacuum quenching furnace, and the furnace body is evacuated until the vacuum degree in the furnace body reaches 5×10 -2 Below Pa, then fill it with argon, re-melt the master alloy ingot by arc melting, and then quench the melt on a cooling copper roller rotating at a pe...

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Abstract

The invention provides a SmCo5 permanent magnet ribbon magnet and a preparation method thereof, and relates to magnets of hard magnetic material containing rare earth metals and magnetic transition metals, the composition general formula of the elements of the ribbon magnets is SmxCoyAlzCuuFev, through the addition of different amounts of Al-Cu-Fe alloy in SmCo5 alloy composition, which is equivalent to regularly adding Al-Cu-Fe alloy composition elements in a multi-component mode in the SmCo5 series alloy, to form a multi-element multi-phase strengthening mechanism, the SmCo5 permanent magnet ribbon magnet whose element composition general formula is SmxCoyAlzCuuFev is prepared. The shortcomings are overcome for such cases when in the existing technology after single elements are added, while improvements are made on one or limited several performances of the magnet material, often other performances result in reductions or changes, so that the performance has large differences from the theoretical value, and when a variety of elements are added, no rules can be followed, and inconveniences are brought to the subsequent research.

Description

technical field [0001] The technical solution of the present invention relates to magnets of hard magnetic materials containing rare earth metals and magnetic transition metals, specifically SmCo 5 Permanent thin-strip magnet and its preparation method. Background technique [0002] So far, SmCo 5 Permanent magnets are magnetic materials with the largest magnetocrystalline anisotropy among intermetallic compounds. Compared with Nd-Fe-B permanent magnets, SmCo 5 Permanent magnets have the characteristics of high Curie temperature, low temperature coefficient of coercive force, good chemical stability and good corrosion resistance, so they are widely used in machinery, electronic devices, medical, aerospace and other fields. [0003] Improve SmCo 5 The coercivity and magnetization of permanent magnets are the main research directions of many scholars. reasonably to the SmCo 5 Adding other alloying elements to permanent magnets is a common way to increase their coercive f...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01F1/055H01F41/02C22C19/07B22D18/06C21D8/12B22D11/06
CPCB22D11/06B22D18/06C21D8/1211C22C19/07H01F1/0551H01F41/0253
Inventor 孙继兵边璐鹏步绍静殷福星崔春翔张磊
Owner HEBEI UNIV OF TECH
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