Coercivity, microstructure, and thermal stability of sintered Nd–Fe–B magnets by grain boundary diffusion with TbH3 nanoparticles

Coercivity, microstructure, and thermal stability of sintered Nd–Fe–B magnets by grain... Grain boundary diffusion technique with TbH3 nanoparticles was applied to fabricate Tb-less sintered Nd–Fe–B permanent magnets with high coercivity. The magnetic properties and microstructure of magnets were systematically studied. The coercivity and remanence of grain boundary diffusion magnet are improved by 112 % and reduced by 26 % compared with those of the original magnet, respectively. Meanwhile, both the remanence temperature coefficient (α) and the coercivity temperature coefficient (β) of the magnets are improved after diffusion treatment. Microstructure shows that Tb element enriches in the surface region of Nd2Fe14B grains and is expected to exist as (Nd,Tb)2Fe14B phase. Thus, the magneto-crystalline anisotropy field of the magnet improves remarkably. As a result, the sintered Nd-Fe-B magnets by grain boundary diffusion with TbH3 nanoparticles exhibit enhanced coercivity. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Rare Metals Springer Journals

Coercivity, microstructure, and thermal stability of sintered Nd–Fe–B magnets by grain boundary diffusion with TbH3 nanoparticles

Loading next page...
 
/lp/springer_journal/coercivity-microstructure-and-thermal-stability-of-sintered-nd-fe-b-JlEKh9zcIG
Publisher
Nonferrous Metals Society of China
Copyright
Copyright © 2014 by The Nonferrous Metals Society of China and Springer-Verlag Berlin Heidelberg
Subject
Materials Science; Metallic Materials; Nanotechnology; Ceramics, Glass, Composites, Natural Materials; Surfaces and Interfaces, Thin Films; Inorganic Chemistry; Physical Chemistry
ISSN
1001-0521
eISSN
1867-7185
D.O.I.
10.1007/s12598-014-0295-2
Publisher site
See Article on Publisher Site

Abstract

Grain boundary diffusion technique with TbH3 nanoparticles was applied to fabricate Tb-less sintered Nd–Fe–B permanent magnets with high coercivity. The magnetic properties and microstructure of magnets were systematically studied. The coercivity and remanence of grain boundary diffusion magnet are improved by 112 % and reduced by 26 % compared with those of the original magnet, respectively. Meanwhile, both the remanence temperature coefficient (α) and the coercivity temperature coefficient (β) of the magnets are improved after diffusion treatment. Microstructure shows that Tb element enriches in the surface region of Nd2Fe14B grains and is expected to exist as (Nd,Tb)2Fe14B phase. Thus, the magneto-crystalline anisotropy field of the magnet improves remarkably. As a result, the sintered Nd-Fe-B magnets by grain boundary diffusion with TbH3 nanoparticles exhibit enhanced coercivity.

Journal

Rare MetalsSpringer Journals

Published: Jun 28, 2014

References

You’re reading a free preview. Subscribe to read the entire article.


DeepDyve is your
personal research library

It’s your single place to instantly
discover and read the research
that matters to you.

Enjoy affordable access to
over 18 million articles from more than
15,000 peer-reviewed journals.

All for just $49/month

Explore the DeepDyve Library

Search

Query the DeepDyve database, plus search all of PubMed and Google Scholar seamlessly

Organize

Save any article or search result from DeepDyve, PubMed, and Google Scholar... all in one place.

Access

Get unlimited, online access to over 18 million full-text articles from more than 15,000 scientific journals.

Your journals are on DeepDyve

Read from thousands of the leading scholarly journals from SpringerNature, Elsevier, Wiley-Blackwell, Oxford University Press and more.

All the latest content is available, no embargo periods.

See the journals in your area

DeepDyve

Freelancer

DeepDyve

Pro

Price

FREE

$49/month
$360/year

Save searches from
Google Scholar,
PubMed

Create lists to
organize your research

Export lists, citations

Read DeepDyve articles

Abstract access only

Unlimited access to over
18 million full-text articles

Print

20 pages / month

PDF Discount

20% off