Effect of annealing on microstructural changes of Nd-rich phases and magnetic properties of Nd-Fe-B sintered magnet
- Authors
- Park, D. W.; Kim, Tae-Hoon; Lee, Seong-Rae; Kim, D. H.; Jang, T. S.
- Issue Date
- 1-5월-2010
- Publisher
- AMER INST PHYSICS
- Citation
- JOURNAL OF APPLIED PHYSICS, v.107, no.9
- Indexed
- SCIE
SCOPUS
- Journal Title
- JOURNAL OF APPLIED PHYSICS
- Volume
- 107
- Number
- 9
- URI
- https://scholar.korea.ac.kr/handle/2021.sw.korea/116469
- DOI
- 10.1063/1.3348479
- ISSN
- 0021-8979
- Abstract
- The microstructural changes of Nd-rich interface phases during postsintering annealing were investigated. A mixture of very fine (about 2-3 nm) crystallites of hexagonal h-Nd(2)O(3), cubic Ia (3) over bar -Nd(2)O(3) (C-Nd(2)O(3)), and amorphous phases were observed at the interface phase in the as-sintered magnet and after the first postsintering annealing process. The transformation from h-Nd(2)O(3) to C-Nd(2)O(3) occurred during the second postsintering annealing process, and the resulting C-Nd(2)O(3) has the proper crystallographic relation with the main phase. The reduced lattice mismatch between the (110) plane of C-Nd(2)O(3) interface phase and the (001) or (100) plane of Nd-Fe-B main phase after the second postsintering annealing process is the primary reason for the enhancement in the magnetic properties. (C) 2010 American Institute of Physics. [doi: 10.1063/1.3348479]
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Collections - College of Engineering > Department of Materials Science and Engineering > 1. Journal Articles
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