Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

High-performance Nd-Fe-B permanent magnet material and preparation method thereof

A permanent magnet material, neodymium iron boron technology, applied in the direction of magnetic materials, inductors/transformers/magnet manufacturing, magnetic objects, etc., can solve problems such as unsatisfactory performance, low magnetic performance, large usage, etc., to increase the maximum magnetic energy product , Improve the impact toughness, the effect of low price and cost

Active Publication Date: 2016-11-16
宁波雄海稀土速凝技术有限公司
View PDF5 Cites 7 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] However, at present, most of the permanent magnet materials with relatively low magnetic properties are used in the Chinese market. Due to the unsatisfactory performance during use, it will cause a large amount of use and increase the cost.

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • High-performance Nd-Fe-B permanent magnet material and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] The permanent magnet material is composed of the following components in weight percentage: PrNd: 32%, Gd1%, Ga 0.1%, Zr0.1%, B 1%, Co0.3%, Al 0.3%, Cu 0.08%, Mo0. 15%, Ti 0.1%, LaCe 0.3%, and the balance is Fe.

[0024] The above-mentioned PrNd in the present invention is a PrNd alloy, wherein the Nd content is 2%.

[0025] The present invention also provides a method for preparing the above-mentioned NdFeB permanent magnet material, the preparation steps are:

[0026] (1) According to the composition and mass percentage of NdFeB magnets, the raw materials are mixed and smelted. After the smelting is complete, it is poured and cooled to form strips;

[0027] (2) carrying out hydrogen crushing and jet milling to the above-mentioned obtained strips to make powder;

[0028] (3) Putting the above-mentioned powder into a forming press mold under the protection of an inert gas and applying a magnetic field to carry out orientation, and press molding after orientation;

[...

Embodiment 2

[0035] The permanent magnet material is composed of the following components in weight percentage: PrNd: 32.5%, Gd 0.70%, Ga0.09%, Zr 0.08%, B 1.0%, Co 0.30%, Al 0.30%, Cu0.08%, Mo0 .20%, Ti 0.20%, LaCe 0.3%, and the balance is Fe.

[0036] Method is with embodiment 1.

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

PropertyMeasurementUnit
thicknessaaaaaaaaaa
thicknessaaaaaaaaaa
Login to View More

Abstract

The invention relates to a high-performance Nd-Fe-B permanent magnet material. The permanent magnet material is characterized by comprising the following constituents by weight percent: 31-35% of PrNd, 0.5-1% of Gd, 0.05-0.15% of Ga, 0.05-0.15% of Zr, 0.8-1.6% of B, 0.2-0.5% of Co, 0.1-0.4% of Al, 0.05-0.2% of Cu, 0.05-0.3% of Mo, 0.05-0.3% of Ti and 0.1-0.5% of LaCe with the balance being Fe. In the permanent magnet material, the PrNd content and the Nd content are reasonably controlled, meanwhile, elements such as rear earth and Zr are added, thus, the integral maximum magnetic energy product of a magnet is improved, the usage amount of the magnet is reduced, and the permanent magnet material is lighter and is lower in cost.

Description

technical field [0001] The invention relates to the technical field of permanent magnet materials, in particular to a high-performance (maximum energy product of more than 390MGOe) NdFeB permanent magnet material and a preparation method thereof. Background technique [0002] NdFeB magnets are by far the strongest permanent magnets. NdFeB is called the third-generation rare earth permanent magnet material, and it is the permanent magnet material with the highest magnetic energy product today. In 1983, it was first successfully developed by Sumitomo Special Metals Corporation of Japan and General Motors Corporation of the United States. With the development of industries such as computers and communications, the preparation and application of NdFeB permanent magnet materials have developed rapidly. Its application can greatly reduce the volume and quality of the whole machine, such as the application on the disk, which can make the disk drive miniaturized and have better per...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Applications(China)
IPC IPC(8): H01F1/057H01F41/02
CPCH01F1/0573H01F1/0576H01F1/0577H01F41/0266
Inventor 路河树
Owner 宁波雄海稀土速凝技术有限公司
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com