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Double-principal-phase yttrium-contained permanent magnet and preparing method of double-principal-phase yttrium-contained permanent magnet

A dual main-phase, permanent magnet technology, applied in the manufacture of magnetic objects, permanent magnets, inductors/transformers/magnets, etc., can solve the problem that the B magnet cannot meet the performance requirements, achieve high component adjustable degrees of freedom, and improve cost performance , the effect of reducing production costs

Inactive Publication Date: 2014-01-29
赣州诚正稀土新材料股份有限公司 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] due to Y 2 Fe 14 Anisotropy field H of B A much lower than Nd 2 Fe 14 B, Y ​​prepared by traditional preparation method 2 Fe 14 B magnets cannot meet the performance requirements of users, and it is urgent to develop a new type of permanent magnet alloy

Method used

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  • Double-principal-phase yttrium-contained permanent magnet and preparing method of double-principal-phase yttrium-contained permanent magnet
  • Double-principal-phase yttrium-contained permanent magnet and preparing method of double-principal-phase yttrium-contained permanent magnet
  • Double-principal-phase yttrium-contained permanent magnet and preparing method of double-principal-phase yttrium-contained permanent magnet

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Experimental program
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Effect test

Embodiment 1

[0028] According to the preparation method of the present invention, the composition according to the design is [Y 0.6 Nd 0.3625 Ho 0.0375 ] 30 Fe bal B1 tm o. 67 (TM=Ga, Co, Cu, Nb, Al) (wt.%) double main phase yttrium-containing permanent magnet, the specific steps are as follows:

[0029] (1) Prepare two different main phase alloys, according to the composition of the first main phase alloy, the mass percentage is Nd 30 Fe bal B 1 tm 0. 67 (TM=Ga, Co, Cu, Nb, Al) (wt.%), the composition of the second main phase alloy is [Y 0.8 Nd 0.15 Ho 0.05 ] 30 Fe bal B 1 tm 0.67 (TM=Ga, Co, Cu, Nb, Al) (wt.%), prepare raw materials respectively;

[0030] (2) The prepared raw materials are smelted as follows: first, put the raw materials into the crucible of the medium frequency induction melting furnace, and when the vacuum degree reaches 10 -2 Preheat with low power when Pa is above, and wait until the vacuum degree reaches 10 again. -2 Stop vacuuming and fill high-...

Embodiment 2

[0040] According to the preparation method of the present invention, the composition according to the design is [Y 0.48 PR 0.1 Nd 0.4 Dy 0.02 ] 30 Fe bal B 1 tm o. 67 (TM=Ga, Co, Cu, Nb, Al) (wt.%) double main phase yttrium-containing permanent magnet, the specific steps are as follows:

[0041] (1) Prepare two different main phase alloys, the composition of the first main phase alloy is (Pr 0.25 Nd 0.75 ) 30 Fe bal B 1 tm 0. 67 (TM=Ga, Co, Cu, Nb, Al) (wt.%), the composition of the second main phase alloy is [Y 0.8 Nd 0.167 Dy 0.033 ] 30 Fe bal B 1 tm 0.67 (TM=Ga, Co, Cu, Nb, Al) (wt.%), prepare raw materials respectively;

[0042] (2) The prepared raw materials are smelted as follows: first, put the raw materials into the crucible of the medium frequency induction melting furnace, and when the vacuum degree reaches 10 -2 Preheat with low power when Pa is above, and wait until the vacuum degree reaches 10 again. -2 Stop vacuuming and fill high-purity A...

Embodiment 3

[0052] According to the preparation method of the present invention, the composition according to the design is [Y 0.2 Nd 0.8 ] 30 Fe bal B 1 tm o. 67 (TM=Ga, Co, Cu, Nb, Al) (wt.%) double main phase yttrium-containing permanent magnet, the specific steps are as follows:

[0053] (1) Prepare two different main phase alloys, the composition of the first main phase alloy is Nd by mass percentage 30 Fe bal B 1 tm 0. 67 (TM=Ga, Co, Cu, Nb, Al) (wt.%), the composition of the second main phase alloy is (Y 0.3 Nd 0.7 ) 30 Fe bal B 1 tm 0.67 (TM=Ga, Co, Cu, Nb, Al) (wt.%), prepare raw materials respectively;

[0054] (2) The prepared raw materials are smelted as follows: first, put the raw materials into the crucible of the medium frequency induction melting furnace, and when the vacuum degree reaches 10 -2 Preheat with low power when Pa is above, and wait until the vacuum degree reaches 10 again. -2 Stop vacuuming and fill high-purity Ar after the Pa is above, so ...

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Abstract

The invention discloses a double-principal-phase yttrium-contained permanent magnet, and belongs to the technical field of rare earth permanent magnetic materials. The chemical formula of the double-principal-phase yttrium-contained permanent magnet is (YetaRe1-eta)alphaFe100-alpha-beta-gammaBbetaTMgamma according to the mass percent, wherein the eta is larger than or equal to 0.05 and smaller than or equal to 0.6, the alpha is larger than or equal to 29 and smaller than or equal to 33, the beta is larger than or equal to 0.8 and smaller than or equal to 1.4, the gamma is larger than or equal to 0.5 and smaller than or equal to 3.6, the Re is one or more of elements of Nd, Pr, Dy, Tb and Ho, and the TM is one or more of elements of Ga, Co, Cu, Nb and Al. The double-principal-phase yttrium-contained permanent magnet is of the double-principal-phase structure comprising a (Y, Re)-Fe-B principal phase and a (Nd, Pr)-Fe-B principal phase. According to the double-principal-phase yttrium-contained permanent magnet prepared by a double-principal-phase alloy method, the good magnetic performance is kept, meanwhile, the Nd and the Pr can be greatly replaced by the relatively abundant Y, and the production cost of the double-principal-phase yttrium-contained permanent magnet is greatly reduced.

Description

technical field [0001] The invention belongs to the technical field of rare earth permanent magnet materials, and in particular relates to a dual main phase yttrium-containing permanent magnet and a preparation method thereof. Background technique [0002] As an important part of the new material industry, rare earth permanent magnet materials are widely used in energy, transportation, machinery, medical, IT, home appliances and other industries, such as manufacturing various permanent magnet motors, vibration motors, permanent magnet instruments, electronics industry, nuclear magnetic resonance Devices, audio equipment and magnetic therapy equipment, etc., its products involve many fields of the national economy. [0003] At present, the rare earth raw materials used to prepare NdFeB rare earth permanent magnet materials are mainly neodymium, praseodymium, dysprosium, terbium, etc. With the increasing use of NdFeB rare earth permanent magnet materials, rare earth metals su...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01F7/02H01F1/053H01F41/02C22C1/02B22F3/16
Inventor 彭光怀赖诚明钟文尖廖明活贾小武
Owner 赣州诚正稀土新材料股份有限公司
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