High magnetic energy product material and preparation method

A technology of high magnetic energy product and rare earth materials, applied in the direction of magnetic materials, magnetic objects, electrical components, etc., can solve the problem of insufficient magnetic energy product of materials, achieve the effect of simplifying the process, uniform structure, and improving corrosion resistance

Active Publication Date: 2016-07-27
SHANXI RAY WHEAT ELECTRONICS TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the magnetic energy product of the material prepared by this method is not high enough to meet the needs of the current market.

Method used

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  • High magnetic energy product material and preparation method

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Experimental program
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Effect test

Embodiment 1

[0030] The preparation method of the high magnetic energy product material of the present invention, the method comprises the following steps:

[0031] 1) According to the following mass percentages, Nd24%, Ce5.2%, Eu1.6%, Sn0.6%, B3%, P0.08%, Au0.005%, Ni0.7%, In0.045%, and the rest are Fe, where Nd, Ce, Eu, Sn, Au, Ni, In are added as pure elemental substances, B is added as an iron-boron alloy containing 25% by mass of B, and P is added as a phosphorus-iron alloy with a mass fraction of 25% of phosphorus Add in the form of Fe, and the balance Fe is added in the form of pure metal;

[0032]2) Put the prepared raw materials into the crucible in the vacuum induction furnace, heat to 1500°C, keep it warm for 20 minutes, pour it into the ingot mold, and cool naturally to obtain the rare earth material alloy ingot;

[0033] 3) The rare earth material alloy ingot prepared above is subjected to strip making, pretreatment, nitriding powder making, pressing and sintering to obtain a...

Embodiment 2

[0039] The preparation method of the high magnetic energy product material of the present invention, the method comprises the following steps:

[0040] 1) According to the following mass percentage ingredients: Nd28%, Ce5.8%, Eu1.9%, Sn0.9%, B7%, P0.12%, Au0.007%, Ni0.9%, In0.060%, the rest It is Fe, wherein Nd, Ce, Eu, Sn, Au, Ni, In are added in the form of pure elemental substances, B is added in the form of an iron-boron alloy containing 25% by mass of B, and P is added in the form of phosphorus with a mass fraction of 25% of phosphorus It is added in the form of iron alloy, and the rest Fe is added in the form of pure metal;

[0041] 2) Add the prepared raw materials into the crucible in the vacuum induction furnace, heat to 1530°C, keep it warm for 20 minutes, pour it into the ingot mold, and cool naturally to obtain the rare earth material alloy ingot;

[0042] 3) The rare earth material alloy ingot prepared above is subjected to strip making, pretreatment, nitriding p...

Embodiment 3

[0048] The preparation method of the high magnetic energy product material of the present invention, the method comprises the following steps:

[0049] Nd26%, Ce5.5%, Eu1.8%, Sn0.8%, B5%, P0.11%, Au0.0067%, Ni0.8%, In0.049%, the rest is Fe; other conditions and preparation process Same as embodiment one. The material also contains 0.065% by mass of N and 0.4% by mass of S.

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Abstract

The invention provides a high magnetic energy product material and a preparation method. The method comprises following steps of preparing materials according to following mass percent: 24-28% of Nd, 5.2-5.8% of Ce, 1.6-1.9% of Eu, 0.6-0.9% of Sn, 3-7% of B, 0.08-0.12% of P, 0.005-0.007% of Au, 0.7-0.9% of Ni and 0.045-0.060% of In, and the remainder being Fe; adding the prepared raw materials to the crucible in a vacuum induction furnace; heating to 1500-1530 degrees centigrade; keeping warm for 20 minutes; pouring the prepared materials into an ingot mould; naturally cooling, thus obtaining alloy ingot containing rare earth materials; carrying out tape preparation, preprocessing, nitriding, powder preparation, compression moulding and sintering technologies on the prepared alloy ingot containing the rare earth materials, thus obtaining the high magnetic energy product material.

Description

technical field [0001] The invention belongs to the field of metal materials, and relates to a high magnetic energy product material and a preparation method. Background technique [0002] Application No. CN03150162.1 provides a method for preparing SmFeN permanent magnet material by mechanical alloying method, which solves the problems of complex process, difficulty in infiltrating and maintaining nitrogen, and high cost in the preparation of SmFeN. [0003] The process for preparing the SmFeN permanent magnet material is as follows: the pure Sm powder and Fe powder are composed of Sm2Fe17 and Sm powder ratio of 1 to 30% by mass is added on the basis of Sm2Fe17, that is, the final mass percentage is 25 to 30% Sm, 70 to 70% by mass. 75% Fe. In order to increase the infiltration amount of nitrogen, an element (such as at least one of Cr, Ni, Co, etc.) that can promote nitriding can also be added, and the mass percentage is 0.1-2% of the total amount of SmFe. After prelimi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01F1/059C22C38/08
CPCC22C38/002C22C38/005C22C38/008C22C38/08C22C38/32H01F1/059
Inventor 孙锐卢俊丽孙学中
Owner SHANXI RAY WHEAT ELECTRONICS TECH
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