Rare earth permanent magnetic alloy and magnetic phase composite preparation method thereof

A rare earth permanent magnet and permanent magnet alloy technology, applied in magnetic materials, magnetic objects, electrical components, etc., can solve the problems of complex process, high equipment cost, limited application and promotion, etc., to reduce sintering temperature, reduce production cost, Achieving the effect of mass production

Active Publication Date: 2013-07-03
CENT IRON & STEEL RES INST
View PDF3 Cites 21 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the diffusion and infiltration Dy technology has complicated process, high equipment cost, and is also limited by size and thermal deformation, and its main equipment, technology and patents are owned by Japan, which seriously limits the application and promotion of this technology

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
  • Rare earth permanent magnetic alloy and magnetic phase composite preparation method thereof
  • Rare earth permanent magnetic alloy and magnetic phase composite preparation method thereof
  • Rare earth permanent magnetic alloy and magnetic phase composite preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] Adopt the method of the present invention to prepare chemical composition to be (Nd 0.9 Dy 0.1 ) 30 Fe bal B 1 Rare earth permanent magnet alloy with composite magnetic phase, wherein bal is the balance, and the mass percentage of heavy rare earth Dy is 3%.

[0037] Step 1: According to the mass percentage Nd 30 Fe bal B 1 and (Nd 0.8 Dy 0.2 ) 30 Fe bal B 1 Prepare raw materials separately.

[0038] Step 2: Melt the prepared raw materials separately to prepare quick-setting belts. First put the raw materials into the crucible of the quick-setting furnace, and conduct vacuum induction melting under the protection of argon. After the raw materials are fully melted to form an alloy, keep the temperature at 1500°C, and pour the alloy liquid onto a water-cooled copper roller with a line speed of 3 m / s. Above, two quick-setting sheets with a thickness of 0.3 mm were prepared.

[0039] Step 3: crushing powder: Nd prepared in step 2 30 Fe bal B 1 and (Nd 0.8 D...

Embodiment 2

[0044] Low temperature sintering preparation design composition is (Nd 0.8 Ce 0.2 ) 30 Fe bal B 1 The magnet, wherein the rare earth Nd mass percentage content is 24%, the mass percentage content of Ce is 6%, and the total rare earth content is 30%.

[0045] Step 1: According to the mass percentage Nd 30 Fe bal B 1 and (Nd 0.7 Ce 0.3 ) 30 Fe bal B 1 Prepare raw materials separately.

[0046] Step 2: Melt the prepared raw materials separately to prepare quick-setting belts. First put the raw materials into the crucible of the quick-setting furnace, and conduct vacuum induction melting under the protection of argon. After the raw materials are fully melted to form an alloy, keep the temperature at 1400 ° C, and pour the alloy liquid onto a water-cooled copper roller with a line speed of 3 m / s Above, two quick-setting sheets with a thickness of 0.3 mm were prepared.

[0047] Step 3: Crushing and milling: the produced Nd 30 Fe bal B 1 and (Nd 0.7 Ce 0.3 ) 30 Fe...

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
densityaaaaaaaaaa
densityaaaaaaaaaa
Login to view more

Abstract

The invention relates to the technical field of a rare earth permanent magnetic material and relates to a magnetic phase composite rare earth permanent magnetic alloy and a preparation method thereof. The permanent magnetic alloy comprises the following chemical components in mass percentage: REaFe99-a-bB1Mb, wherein a is more than or equal to 28, but less than or equal to 32, b is more than 0, but less than or equal to 10, RE comprises at least two selected rare earth elements from La, Ce, Pr, Nd, Pm, Sm, Eu, Gd, Tb, Dy, Ho, Er, Tm, Yb and Lu, and M is one or more from Co, AL, Cu, Ga, Nb, Mo, Ti, Zr and V. Magnetic phase composite preparation is performed on the permanent magnetic alloy by crushing, mixing, sintering and thermally treating at least two rapid hardening strips with different components, wherein the rapid hardening strips are at least two 2-14-1-type magnetic main phases (RE) 2Fe14B containing different rare earths respectively. Through mutual proportioning of different proportions of rapid hardening strips, a magnet containing designed components is prepared; the magnet comprises two or more 2-14-1-type magnetic phases consisting of different rare earths, including a 2-14-1-type magnetic phase consisting of a single rare earth; and good comprehensive magnetic property is obtained on the premise of reducing the heavy rare earth content.

Description

technical field [0001] The invention relates to the technical field of rare earth permanent magnet materials, and relates to a rare earth permanent magnet alloy and a magnetic phase compound preparation method thereof. Background technique [0002] NdFeB permanent magnet materials are widely used in high-tech fields such as aerospace, information and new energy, and are one of the important basic materials of modern industry. Rare earth elements are the key to NdFeB permanent magnet materials, and account for more than 80% of the cost of raw materials. Due to the limited resources of rare earth elements, and the gradual increase in demand in recent years, the price has risen rapidly. Therefore, improving the magnetic properties of rare earth permanent magnet materials and reducing the amount of rare earth elements, especially the amount of heavy rare earth elements, is one of the hotspots in the rare earth permanent magnet industry around the world. one. [0003] In recent...

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): H01F1/053C22C38/00C22C33/02
Inventor 冯海波李安华朱明刚李卫黄书林李岩峰
Owner CENT IRON & STEEL RES INST
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

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

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap