In situ neutron diffraction study of the nitrogenation process applied to NdFe10.5V1.5 alloys
- 1. Laboratoire de Cristallographie, CNRS, 25 avenue des Martyrs, 38042 Grenoble cedex (France) and CRETA, CNRS, 25 avenue des Martyrs, 38042 Grenoble cedex (France)
- 2. CRETA, CNRS, 25 avenue des Martyrs, 38042 Grenoble cedex (France)
- 3. Laboratoire de Cristallographie, CNRS, 25 avenue des Martyrs, 38042 Grenoble cedex (France)
Description
The RFe12-XM X compounds (R = Pr, Nd; M = Ti, V, Cr, Mn, Mo, Nb), known as the 1:12 phases, are interesting as potential permanent magnets due to their high magnetisation level. For example, the NdFe10.5V1.5N y phase present higher intrinsic magnetic properties than the Nd2Fe14B phase when the compound is fully and homogeneously nitrogenated. The in situ neutron diffraction allowed us to identify two different mechanisms for the nitrogenation reaction of NdFe10.5V1.5 samples that can account for the necessary temperature optimisation of the nitrogenation step. Two different behaviours observed on nitrogenation of annealed or HDDR-processed powders also suggest that the starting microstructure of the powder is a key parameter in the nitrogenation process
Additional details
Identifiers
- DOI
- 10.1016/j.jallcom.2006.03.075;
- PII
- S0925-8388(06)00377-X;
Publishing Information
- Journal Title
- Journal of Alloys and Compounds
- Journal Volume
- 428
- Journal Issue
- 1-2
- Journal Page Range
- p. 44-48
- ISSN
- 0925-8388
- CODEN
- JALCEU
INIS
- Country of Publication
- Netherlands
- Country of Input or Organization
- International Atomic Energy Agency (IAEA)
- INIS RN
- 39013171
- Subject category
- S36: MATERIALS SCIENCE;
- Descriptors DEI
- ANNEALING; IRON ALLOYS; MAGNETIC PROPERTIES; MAGNETIZATION; MICROSTRUCTURE; NEODYMIUM ALLOYS; NEUTRON DIFFRACTION; NITROGEN; PERMANENT MAGNETS; POWDERS; PRASEODYMIUM ALLOYS; VANADIUM ALLOYS
- Descriptors DEC
- ALLOYS; COHERENT SCATTERING; DIFFRACTION; ELEMENTS; EQUIPMENT; HEAT TREATMENTS; MAGNETS; NONMETALS; PHYSICAL PROPERTIES; RARE EARTH ALLOYS; SCATTERING; TRANSITION ELEMENT ALLOYS
Optional Information
- Copyright
- Copyright (c) 2006 Elsevier Science B.V., Amsterdam, The Netherlands, All rights reserved.