Published February 2013
| Version v1
Journal article
Coercivity enhancement of rapidly solidified Nd–Fe–B magnet powders
- 1. National Institute for Materials Science, Tsukuba 305-0047 (Japan)
- 2. Daido Corporate Research and Development Center, Daido Steel Co. Ltd., Nagoya 457-8545 (Japan)
Description
A high coercivity of 2.6 T is achieved in melt-spun Nd–Fe–B isotropic magnet powders by the grain boundary diffusion process using Nd80Cu20 and Nd82Al18 alloys. δM measurements indicate that Nd2Fe14B nanocrystals are magnetically decoupled after the diffusion process. Transmission electron microscopy revealed that the exchange decoupling is due to the formation of a thin Nd-rich phase at the grain boundaries. The mechanism of the coercivity enhancement is discussed based on microstructure observations and micromagnetic simulations.
Availability note (English)
Available from http://dx.doi.org/10.1016/j.scriptamat.2012.10.005Additional details
Identifiers
- DOI
- 10.1016/j.scriptamat.2012.10.005;
- PII
- S1359-6462(12)00626-4;
Publishing Information
- Journal Title
- Scripta Materialia
- Journal Volume
- 68
- Journal Issue
- 3-4
- Journal Page Range
- p. 167-170
- ISSN
- 1359-6462
- CODEN
- SCMAF7
INIS
- Country of Publication
- United Kingdom
- Country of Input or Organization
- International Atomic Energy Agency (IAEA)
- INIS RN
- 45025186
- Subject category
- S36: MATERIALS SCIENCE;
- Descriptors DEI
- ALUMINIUM ALLOYS; BORON ALLOYS; COERCIVE FORCE; COMPUTERIZED SIMULATION; COPPER ALLOYS; DECOUPLING; DIFFUSION; GRAIN BOUNDARIES; IRON ALLOYS; MAGNETIC MATERIALS; MAGNETS; NANOSTRUCTURES; NEODYMIUM ALLOYS; POWDERS; TRANSMISSION ELECTRON MICROSCOPY
- Descriptors DEC
- ALLOYS; ELECTRON MICROSCOPY; EQUIPMENT; MATERIALS; MICROSCOPY; MICROSTRUCTURE; RARE EARTH ALLOYS; SIMULATION; TRANSITION ELEMENT ALLOYS
Optional Information
- Copyright
- Copyright (c) 2012 Elsevier Science B.V., Amsterdam, The Netherlands, All rights reserved.