Published December 2004
| Version v1
Journal article
Novel nanostructures in microalloyed Pr-Fe-B nanocomposite permanent magnets
Creators
- 1. Department of Mechanical Engineering, University of Nebraska, Lincoln 68588, NE (United States) and Center for Materials Research and Analysis, N 104 WSEC, University of Nebraska, Lincoln, NE (United States)
- 2. Center for Materials Research and Analysis, N 104 WSEC, University of Nebraska, Lincoln, NE (United States)
- 3. Department of Mechanical Engineering, University of Nebraska, Lincoln 68588, NE (United States)
Description
Microalloying of Pr-Fe-B nanocomposite permanent magnets with refractory metals have resulted in the development of very fine two-phase nanostructures. Energy-filtered transmission electron microscopy has been used to characterize the phase and chemistry distributions in the nanostructures. With Hf and Ti additions, α-Fe and Pr2Fe14B form as discrete phases, forming a granular nanocomposite. However, with Nb additions grains with a discrete chemical segregation pattern were formed. The grain interiors were found to be poor in Fe and rich in Pr, while the grain shells were found to be poor in Pr and rich in Fe, Co and B. An increased coercivity was attributed to this unique structure
Additional details
Identifiers
- DOI
- 10.1016/j.jmmm.2004.06.049;
- PII
- S0304-8853(04)00726-7;
Publishing Information
- Journal Title
- Journal of Magnetism and Magnetic Materials
- Journal Volume
- 284
- Journal Issue
- 3
- Journal Page Range
- p. L1-L6
- ISSN
- 0304-8853
- CODEN
- JMMMDC
INIS
- Country of Publication
- Netherlands
- Country of Input or Organization
- International Atomic Energy Agency (IAEA)
- INIS RN
- 36070425
- Subject category
- S36: MATERIALS SCIENCE;
- Descriptors DEI
- BORON ALLOYS; COERCIVE FORCE; HAFNIUM ADDITIONS; IRON ALLOYS; IRON-ALPHA; NANOSTRUCTURES; PERMANENT MAGNETS; PRASEODYMIUM ALLOYS; REFRACTORY METALS; SEGREGATION; SOLIDIFICATION; TITANIUM ADDITIONS; TRANSMISSION ELECTRON MICROSCOPY
- Descriptors DEC
- ALLOYS; ELECTRON MICROSCOPY; ELEMENTS; EQUIPMENT; HAFNIUM ALLOYS; IRON; MAGNETS; METALS; MICROSCOPY; PHASE TRANSFORMATIONS; RARE EARTH ALLOYS; TITANIUM ALLOYS; TRANSITION ELEMENT ALLOYS; TRANSITION ELEMENTS
Optional Information
- Copyright
- Copyright (c) 2004 Elsevier Science B.V., Amsterdam, The Netherlands, All rights reserved.