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A kind of multi-rare earth phase material and preparation method thereof

A technology of rare earth and permanent magnet materials, applied in the direction of magnetic materials, inorganic materials, magnetic objects, etc., can solve the problem of insufficient magnetic energy product, achieve the effects of improving the environment, flexible composition ratio, and high social value

Active Publication Date: 2017-09-05
XUZHOU NANFANG YONGCI MATERIAL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

But the energy product of the material is not high enough

Method used

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  • A kind of multi-rare earth phase material and preparation method thereof
  • A kind of multi-rare earth phase material and preparation method thereof
  • A kind of multi-rare earth phase material and preparation method thereof

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] A preparation method of multiple rare earth phase materials, comprising the following steps:

[0020] 1) Dosing according to the following mass percentages: Nd 15%, Ir 3%, Ga 4.5%, Cr 6%, Pr 3%, Gd 0.15%, Sr 0.3%, B 2%, Co 0.45%, Mn 0.01%, Mo 0.0%, the rest is Fe;

[0021] 2) Add the above-mentioned prepared raw materials into the crucible of the vacuum induction furnace, heat up to 1560-1580°C, the vacuum degree of the vacuum induction furnace is required to be less than 0.1Pa, keep it warm for 20-30 minutes, pour it into the ingot mold, and cool naturally to obtain Multi-rare-earth phase permanent magnet material alloy ingot; after making strips, the above-mentioned multi-rare-earth phase material alloy strips are powder-milled, pressed and formed, and sintered to obtain the multi-rare-earth phase permanent magnet material. When making strips, the obtained multi-rare-earth phase permanent magnet material alloy ingot is put into a remelting tubular crucible in a vacuu...

Embodiment 2

[0023] A preparation method of multiple rare earth phase materials, comprising the following steps:

[0024] 1) Dosing according to the following mass percentages: Nd 20%, Ir4%, Ga 6%, Cr8.0%, Pr4%, Gd0.20%, Sr 0.4%, B5%, Co0.60%, Mn 0.04%, Mo0 .04%, the balance being Fe;

[0025] 2) Add the above-mentioned prepared raw materials into the crucible of the vacuum induction furnace, heat up to 1560-1580°C, the vacuum degree of the vacuum induction furnace is required to be less than 0.1Pa, keep it warm for 20-30 minutes, pour it into the ingot mold, and cool naturally to obtain Multi-rare-earth phase permanent magnet material alloy ingot; after making strips, the above-mentioned multi-rare-earth phase material alloy strips are powder-milled, pressed and formed, and sintered to obtain the multi-rare-earth phase permanent magnet material. When making strips, the obtained multi-rare-earth phase permanent magnet material alloy ingot is put into a remelting tubular crucible in a vacu...

Embodiment 3

[0027] A preparation method of multiple rare earth phase materials, comprising the following steps:

[0028] 1) Dosing according to the following mass percentage: Nd 18%, Ir 3.5%, Ga 5%, Cr 7%, Pr 3.5%, Gd 0.18%, Sr 0.35%, B 4%, Co 0.5%, Mn 0.03%, Mo 0.03 %, the rest is Fe;

[0029] 2) Add the above-mentioned prepared raw materials into the crucible of the vacuum induction furnace, heat up to 1560-1580°C, the vacuum degree of the vacuum induction furnace is required to be less than 0.1Pa, keep it warm for 20-30 minutes, pour it into the ingot mold, and cool naturally to obtain Multi-rare-earth phase permanent magnet material alloy ingot; after making strips, the above-mentioned multi-rare-earth phase material alloy strips are powder-milled, pressed and formed, and sintered to obtain the multi-rare-earth phase permanent magnet material. When making strips, the obtained multi-rare-earth phase permanent magnet material alloy ingot is put into a remelting tubular crucible in a va...

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Abstract

The invention discloses a multi-rare-earth-phase material and a preparation method thereof. The material comprises the following components in percentage by mass: 15-20% of Nd, 3-4% of Ir, 4.5-6% of Ga, 6.0-8.0% of Cr, 3-4% of Pr, 0.15-0.20% of Gd, 0.3-0.4% of Sr, 2-5% of B, 0.45-0.60% of Co, 0.01-0.04% of Mn, 0.01-0.04% of Mo, and the balance of Fe. The material disclosed by the invention has the advantages of uniform texture and robust structure; in addition, the material is improved in corrosion resistance and magnetic property. The material is prepared by using the preparation method disclosed by the invention. The simple and effective anti-oxidation method can ensure a small difference in oxygen content between the surface and inside of a magnetic body and therefore makes the preparation of a high-performance rare earth material possible. The permanent magnet material disclosed by the invention has excellent stability and practicability, can be widely applied to various fields such as electronic devices, aerospace technology, computer equipment, magnetic separators, communication equipment, medical equipment, electric bicycles, electronic toys.

Description

technical field [0001] The invention belongs to the field of metal materials, and in particular relates to a multi-rare earth phase material and a preparation method. Background technique [0002] Modern magnetic materials have been widely used in our lives, such as using permanent magnet materials as motors, core materials used in transformers, magneto-optical disks used as memories, magnetic recording floppy disks for computers, etc. According to Dabit Information, magnetic materials are closely related to informatization, automation, mechatronics, national defense, and all aspects of the national economy. It is generally believed that magnetic materials refer to substances that can directly or indirectly generate magnetism from excessive elements such as iron, cobalt, nickel and their alloys. Magnetic materials can be divided into soft magnetic materials and hard magnetic materials according to the difficulty of demagnetization after magnetization. The material that is ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01F1/057H01F1/08C22C33/02C22C38/18C22C38/10C22C38/04C22C38/12
CPCC22C33/02C22C38/002C22C38/005C22C38/04C22C38/10C22C38/12C22C38/18H01F1/0571H01F1/0575
Inventor 王玲陶诏灵赵浩峰张仕昭王巧玲张泽中刘妍慧阿穷李树岭王槐亮牟雯婷汪修双何晨晨
Owner XUZHOU NANFANG YONGCI MATERIAL
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