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High-performance rare earth permanent magnet material

A rare earth permanent magnet, high-performance technology, applied in the field of alloys, can solve the problems of low coercivity, limit the application of magnets, increase the processing cost of magnets, etc., achieve the improvement of mechanical properties and coercivity, easy to large-scale industrial production, realize The effect of large-scale industrial production

Inactive Publication Date: 2015-12-16
南通长江电器实业有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The tensile strength and bending strength of NdFeB rare earth permanent magnet materials are low, and the coercive force is also low, which makes the magnet easy to crack and slag during processing, which greatly reduces the yield and processing accuracy of the magnet, and improves the quality of the magnet. The processing cost of magnets limits the application of magnets in high-precision motors

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] A high-performance rare earth permanent magnet material, including rare earth elements, iron, boron, magnesium, manganese, titanium, nickel, cadmium, aluminum, the weight percentage of each component is: boron 1.0%, magnesium 0.1%, manganese 3%, titanium 1.5%, nickel 0.3%, cadmium 0.2%, aluminum 3%, neodymium 22.5%, cerium 0.75%, lanthanum 0.75%, praseodymium 3%, the balance is iron and unavoidable impurities.

Embodiment 2

[0030] A high-performance rare earth permanent magnet material, including rare earth elements, iron, boron, magnesium, manganese, titanium, nickel, cadmium, aluminum, the weight percentage of each component is: boron 1.2%, magnesium 0.14%, manganese 2%, titanium 2%, nickel 0.15%, cadmium 0.4%, aluminum 2%, neodymium 19.5%, cerium 0.65%, lanthanum 0.65%, praseodymium 2.6%, and the balance is iron and unavoidable impurities.

Embodiment 3

[0032] A high-performance rare earth permanent magnet material, including rare earth elements, iron, boron, magnesium, manganese, titanium, nickel, cadmium, aluminum, the weight percentage of each component is: boron 1.4%, magnesium 0.06%, manganese 1%, titanium 2.5%, nickel 0.45%, cadmium 0.1%, aluminum 4.5%, neodymium 27%, cerium 0.9%, lanthanum 0.9%, praseodymium 3.6%, and the balance is iron and unavoidable impurities.

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PUM

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Abstract

The invention relates to a high-performance rare earth permanent magnet material which comprises, by weight, 20-35% of rare earth elements, 0.8-1.5% of boron, 0.02-0.2% of magnesium, 0.5-5% of manganese, 0.1-3% of titanium, 0.02-0.5% of nickel, 0.02-0.5% of cadmium, 0.5-5% of aluminum, inevitable impurities and the balance ferrum. The mechanical performance and coercive force of the rare earth permanent magnet material are greatly improved, the cost is low, the manufacturing stability is high, the manufacturing method is simple, and large-scale industrial production is easy to achieve.

Description

technical field [0001] The invention belongs to the field of alloys, and in particular relates to a high-performance rare earth permanent magnet material with greatly improved mechanical properties and coercive force. Background technique [0002] Since 1966, a new member has been added to the permanent magnet material, which is "rare earth permanent magnet". Due to the excellent properties of rare earth permanent magnet materials, its appearance has opened a new door for applications. In particular, the third-generation rare earth permanent magnet material NdFeB, which came out in 1983, has always been the most magnetic permanent magnet material in the world today. [0003] NdFeB rare earth permanent magnet materials are important basic materials supporting modern society and are closely related to people's lives. As small as watches, cameras, tape recorders, CD players, VCD players, computer hard disks, CD drives, as large as automobiles, generators, suspension trains, m...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01F1/053C22C38/14C22C33/02
Inventor 方志平钱黎峰陈晓宇李卓奇仝进峰
Owner 南通长江电器实业有限公司
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