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

A kind of nanocrystalline complex-phase rare earth-transition group metal-b permanent magnet alloy magnetic powder and its manufacturing method

A technology of transition group metals and permanent magnet alloys, applied in the direction of magnetic materials, magnetic objects, inorganic materials, etc.

Active Publication Date: 2016-08-17
沈阳新橡树磁性材料有限公司
View PDF3 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

That is to say, the magnetic performance potential of the magnetic powder of the rapidly quenched nanocrystalline dual-phase rare earth (RE)-transition metal (TM)-B permanent magnet alloy has yet to be tapped.

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

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] .The preparation method and technological process of the quick-quenching nanocrystalline composite phase rare earth (RE)-transition metal (TM)-B permanent magnetic alloy magnetic powder are as follows:

[0028] 1. Alloying

[0029] Using Nd, Fe, Pt and BFe (containing B19wt%) with a purity of 99.9% as raw materials, according to the alloy composition ratio: Nd: 21wt%, .Pt: 7.1wt%, BFe alloy (containing B19wt%): 4.1wt% , Weigh the ingredients with the remaining Fe, then evacuate, and under the protection of argon, use an intermediate frequency induction furnace to melt into a rare earth (RE)-transition metal (TM)-B master alloy ingot.

[0030] 2.Quick quenching belt, milling

[0031] Put the rare earth (RE)-transition group metal (TM)-B master alloy ingot into a quartz tube with a small hole at the bottom, vacuum it, and melt it by medium frequency induction under the protection of argon. The molten alloy is sprayed on a water-cooled metal molybdenum roller that rotate...

Embodiment 2

[0036]Using Nd, Fe, Pt and BFe (containing B19wt%) with a purity of 99.9% as raw materials, according to the alloy composition ratio: Nd: 18.5wt%, .Pt: 6.2wt%, BFe alloy (containing B19wt%): 3.6wt %, surplus Fe weighs batching, and processing condition is with embodiment one, and the magnetic property that obtains magnetic powder is:

[0037] Br: 1.16kGs Hci: 5.83kOe(BH)max: 14.17MGOe.

Embodiment 3

[0039] With a purity of 99.9% Nd, Fe, Pt and BFe (containing B19wt%) as raw materials, according to the alloy composition ratio: Nd: 20wt%, .Pt: 13.5wt%, BFe alloy (containing B19wt%): 4wt%, Surplus Fe weighs batching, and processing condition is the same as embodiment one, and the magnetic property that obtains magnetic powder is:

[0040] Br: 8.79kGs Hci: 7.72kOe(BH)max: 11.78MGOe.

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

No PUM Login to View More

Abstract

The invention relates to nanocrystalline multi-phase rare earth-transition metal-B permanent magnet alloy magnetic powder and a preparing method thereof. The RE2TM14B hard magnetic phase serves as a base body of the rapid quenching nanocrystalline multi-phase rare earth (RE)-transition metal (TM)-B permanent magnet alloy magnetic powder, a small number of soft magnetic phases are highly dispersed and evenly distributed on the rapid quenching nanocrystalline multi-phase rare earth (RE)-transition metal (TM)-B permanent magnet magnetic powder, and the rapid quenching nanocrystalline multi-phase rare earth (RE)-transition metal (TM)-B permanent magnet magnetic powder and the base body are in coherency. The soft magnetic phases are formed by Fe3Pt or two phases including Fe3Pt and alpha-Fe. The grain size sum of all phases is smaller than 50 nm.

Description

technical field [0001] The invention relates to a nanocrystalline multi-phase structure produced by a rapid quenching process, containing Fe 3 Rare earth (RE)-transition metal (TM)-B permanent magnet alloy magnetic powder with Pt soft magnetic phase. It belongs to the technical field of rare earth permanent magnet materials. Background technique [0002] The rapid quenching rare earth (RE)-transition metal (TM)-B permanent magnet alloy magnetic powder is a major invention in the 1980s. Because the bonded permanent magnet made of it has good magnetic properties and excellent processing accuracy, it has been widely used in the fields of computers, consumer electronics and household appliances. [0003] There are two types of rapidly quenched rare earth (RE)-transition metal (TM)-B permanent magnet alloy magnetic powder produced at present, according to the phase structure, one is single-phase; the other is dual-phase, which we call Rapidly quenched nanocrystalline dual-phas...

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 Patents(China)
IPC IPC(8): H01F1/057H01F1/06B22F9/04
Inventor 高利群
Owner 沈阳新橡树磁性材料有限公司
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