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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: 2018-01-12
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

[0029] The preparation method of the high magnetic energy product material of the present invention comprises the following steps:

[0030] 1) According to the following mass percentages, Nd 24%, Ce 5.2%, Eu 1.6%, Sn 0.6%, B 3%, P 0.08%, Au 0.005%, Ni 0.7%, In 0.045%, and the rest are Fe, among which Nd, Ce, Eu, Sn, Au, Ni, and In are added in the form of pure elemental substances, B is added in the form of an iron-boron alloy containing 25% B by mass, P is added in the form of a phosphorus-iron alloy containing 25% by mass of phosphorus, and the rest The amount of Fe is added in the form of pure metal;

[0031]2) Add the prepared raw materials into the crucible in the vacuum induction furnace, heat it to 1500°C, hold it for 20 minutes, pour it into the ingot mold, and naturally cool it to obtain an alloy ingot containing rare earth materials;

[0032] 3) The high magnetic energy product material is obtained by subjecting the rare earth material alloy ingot prepared above thr...

Embodiment 2

[0038] The preparation method of the high magnetic energy product material of the present invention comprises the following steps:

[0039] 1) According to the following mass percentages: Nd 28%, Ce5.8%, Eu 1.9%, Sn 0.9%, B 7%, P 0.12%, Au 0.007%, Ni 0.9%, In 0.060%, and the rest are Fe, among which Nd, Ce, Eu, Sn, Au, Ni, and In are added in the form of pure elemental substances, B is added in the form of an iron-boron alloy containing 25% of B by mass, and P is added in the form of a phosphorus-iron alloy containing 25% by mass of phosphorus. , the remainder Fe is added in pure metal form;

[0040] 2) Add the prepared raw materials into the crucible in the vacuum induction furnace, heat it to 1530°C, hold it for 20 minutes, pour it into the ingot mold, and cool it naturally to obtain an alloy ingot containing rare earth materials;

[0041] 3) The high magnetic energy product material is obtained by subjecting the rare earth material alloy ingot prepared above through the pr...

Embodiment 3

[0047] The preparation method of the high magnetic energy product material of the present invention comprises the following steps:

[0048] Nd 26%, Ce5.5%, Eu 1.8%, Sn 0.8%, B 5%, P 0.11%, Au 0.0067%, Ni 0.8%, In0.049%, the rest are Fe; other conditions and preparation process are the same as the 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 complicated process, difficult infiltration and retention of 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 based on the composition of Sm2Fe17 and the Sm powder ratio of 1-30 mass% is added on the basis of Sm2Fe17, that is, the final mass percentage is 25-30% Sm, 70- 75% Fe. In order to increase the infiltration amount of nitrogen, an element (such as at least one of Cr, Ni, Co, etc.) that promotes nitriding can also be added, and the mass percentage is 0.1-2% of the total amount of SmFe. After preliminarily mi...

Claims

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Application Information

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Patent Type & Authority Patents(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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