Preparation method of Si-doped low-Sm-content Sm-Co amorphous matrix magnetic alloy

A magnetic alloy, sm-co technology, applied in the direction of magnetic materials, magnetic objects, electrical components, etc., can solve the problem of difficult to obtain amorphous

Active Publication Date: 2015-12-02
HEBEI UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] However, there are still some limitations in the prior art of preparing Sm-Co amorphous magnetic alloys with low Sm content by high-energy ball milling or melt rapid quenching. For example, it is difficult to obtain Sm-Co alloys with low Sm content Amorphous; the room temperature coercive force of the obtained existing Sm-Co type amorphous alloys needs to be further improved, and it is necessary to develop new preparation methods for Sm-Co-based alloys with low Sm content and to develop effective New Composed Sm-Co-Based Alloys with Low Sm Content

Method used

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  • Preparation method of Si-doped low-Sm-content Sm-Co amorphous matrix magnetic alloy
  • Preparation method of Si-doped low-Sm-content Sm-Co amorphous matrix magnetic alloy
  • Preparation method of Si-doped low-Sm-content Sm-Co amorphous matrix magnetic alloy

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Effect test

Embodiment 1

[0054] Si-doped low Sm content Sm-Co type amorphous base magnetic alloy (Sm 12 co 60 Fe 8 Zr 5 Nb 5 Al 6 B 4 ) 99.9 Si 0.1 preparation.

[0055] The first step, raw material preparation:

[0056] According to the ratio of raw materials (Sm 12 co 60 Fe 8 Zr 5 Nb 5 Al 6 B 4 ) 99.9 Si 0.1 The composition range of the elements defined by atomic percentage in the formula is used to weigh the raw materials involved in the formula: pure Sm, pure Co, pure Fe, pure Zr, pure Nb, pure Al, B-Fe alloy and pure Si The dosage, thus complete the preparation of raw materials;

[0057] The second step is to melt the raw materials to prepare master alloy ingots:

[0058] Put all the raw materials prepared in the first step into the crucible of vacuum arc melting furnace or vacuum induction melting furnace. -3 Pa, the furnace temperature rises to higher than 1600°C until all the raw materials are melted evenly, and then poured into the mold to cool, that is, (Sm 12 co 60 Fe ...

Embodiment 2

[0066] Si-doped low Sm content Sm-Co type amorphous base magnetic alloy (Sm 12 co 60 Fe 8 Zr 5 Nb 5 al 6 B 4 ) 97 Si 3 preparation.

[0067] The first step, raw material preparation:

[0068] According to the ratio of raw materials (Sm 12 co 60 Fe 8 Zr 5 Nb 5 al 6 B 4 ) 97 Si 3 The composition range of the elements defined by atomic percentage in the formula is used to weigh the raw materials involved in the formula: pure Sm, pure Co, pure Fe, pure Zr, pure Nb, pure Al, B-Fe alloy and pure Si The dosage, thus complete the preparation of raw materials;

[0069] The second step is to melt the raw materials to prepare master alloy ingots:

[0070] Put all the raw materials prepared in the first step into the crucible of vacuum arc melting furnace or vacuum induction melting furnace. -3 Pa, the furnace temperature rises to higher than 1600°C until all the raw materials are melted evenly, and then poured into the mold to cool, that is, (Sm 12 co 60 Fe 8 Zr 5...

Embodiment 3

[0078] Si-doped low Sm content Sm-Co type amorphous base magnetic alloy (Sm 12 co 60 Fe 8 Zr 5 Nb 5 al 6 B 4 ) 94 Si 6 preparation.

[0079] The first step, raw material preparation:

[0080] According to the ratio of raw materials (Sm 12 co 60 Fe 8 Zr 5 Nb 5 al 6 B 4 ) 94 Si 6 The composition range of the elements defined by atomic percentage in the formula is used to weigh the raw materials involved in the formula: pure Sm, pure Co, pure Fe, pure Zr, pure Nb, pure Al, B-Fe alloy and pure Si The dosage, thus complete the preparation of raw materials;

[0081] The second step is to melt the raw materials to prepare master alloy ingots:

[0082] Put all the raw materials prepared in the first step into the crucible of vacuum arc melting furnace or vacuum induction melting furnace. -3 Pa, the furnace temperature rises to higher than 1600°C until all the raw materials are melted evenly, and then poured into the mold to cool, that is, (Sm 12 co 60 Fe 8 Zr 5...

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Abstract

The invention provides a preparation method of a Si-doped low-Sm-content Sm-Co amorphous matrix magnetic alloy and relates to magnetic materials containing both rare-earth metals and magnetic transition metals. The preparation method comprises the following steps: preparing raw materials according to the raw material matching formula of (Sm12Co60Fe8Zr5Nb5Al6B4)(100-x)Six(X=0.1-8.0); melting the raw materials to prepare a master alloy ingot; preparing a (Sm12Co60Fe8Zr5Nb5Al6B4)(100-x)Six ribbon magnet; and performing isothermal annealing treatment of the Sm12Co60Fe8Zr5Nb5Al6B4)(100-x)Six ribbon magnet to finally obtain the Si-doped low-Sm-content Sm-Co amorphous matrix magnetic alloy. The preparation method overcomes the shortcoming in the prior art that amorphism is very hard to obtain during the preparation of a low-Sm-content Sm-Co amorphous magnetic alloy, and further improves the room-temperature coercivity of the Sm-Co amorphous alloy.

Description

technical field [0001] The technical scheme of the invention relates to a magnetic material containing rare earth metals and magnetic transition metals, in particular to a method for preparing Si-doped Sm-Co type amorphous base magnetic alloy with low Sm content. Background technique [0002] Sm-Co permanent magnets have excellent high-temperature comprehensive magnetic properties. So far, there are mainly two types of Sm-Co permanent magnets, one is sintered magnets prepared by powder metallurgy, and the other is bonded magnets prepared by melt quenching and bonding. Karyotype and pinning type. [0003] For samarium-based amorphous alloys (see literature LuC.L., LiuH.M., WangK.F., etal.MagneticpropertiesofSm-basedbulkmetallicsglasses[J].JMagnMagnMater, 2010,322:2845-2850), someone in Sm-Co- The high Sm (55-70% Sm) low melting point eutectic region of Al and Sm-Fe-Al has been prepared by rapid quenching and copper mold casting method to prepare Sm-based amorphous alloys, s...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C45/00C22C45/04C22F1/10C22F1/16H01F1/153
Inventor 孙继兵步绍静詹利江段秀丽崔春翔吴珊珊
Owner HEBEI UNIV OF TECH
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