Published December 1988
| Version v1
Journal article
Microstructure and coercivity in (Nd, Dy)-(Fe, Co)-B based sintered permanent magnets with minor Nb and Ga additions
- 1. Academia Sinica, Shenyang (China). Inst. of Metal Research
Description
The microstructure of both Nb and (Nb, Ga)-containing (Nd, Dy)-(Fe, Co)-B based magnets was examined. A new phase (Fe, Co)NbB, having CoNbB-type orthorhombic structure, was found. Dislocations were visible in the vicinity of the Fe2Nb precipitates in the (Nb, Ga)-containing magnet. The pinning of domain walls through Cottrell-atmosphere around the dislocations and the Ga-improved wettability of Nd-rich phase with respect to the matrix, as possible mechanisms, account for greater increase of coercivity in (Nb, Ga)-containing magnet than in that containing Nb alone
Additional details
Publishing Information
- Journal Title
- Journal de Physique (Les Ulis), Colloque
- Journal Volume
- 49
- Journal Issue
- C8
- Series
- J. Phys. (Les Ulis), Colloq.
- Journal Page Range
- C8.573-C8.574
- ISSN
- 0449-1947
- CODEN
- JPQCA
Conference
- Title
- International Conference on Magnetism. Volume 1.
- Dates
- 25-29 Jul 1988.
- Place
- Paris (France).
INIS
- Country of Publication
- France
- Country of Input or Organization
- France
- INIS RN
- 21035043
- Subject category
- S36: MATERIALS SCIENCE; S36: MATERIALS SCIENCE;
- Resource subtype / Literary indicator
- Conference
- Descriptors DEI
- BORIDES; COBALT ALLOYS; DISLOCATIONS; DYSPROSIUM ALLOYS; INTERMETALLIC COMPOUNDS; IRON ALLOYS; MAGNETIC PROPERTIES; MICROSTRUCTURE; NEODYMIUM ALLOYS; PHASE STUDIES
- Descriptors DEC
- ALLOYS; BORON COMPOUNDS; CRYSTAL DEFECTS; CRYSTAL STRUCTURE; LINE DEFECTS; PHYSICAL PROPERTIES; RARE EARTH ALLOYS