Abstract
A new type of HDDR (Hydrogénation, Disproportionation, Desorption, Recombination) processing route, in which alloys are heated up under a low pressure of H2 for the disproportionate] stage, was found to be an effective way of obtaining high remanence Nd-Fe-B ternary powders, with no large decrease in coercivity (which was the problem with the previous HDDR processing route, in which the alloys were heated under vacuum). The alloys with 0. 5 % Ga addition exhibited high coercivities of 1. 0 MAm'1 with no degradation in remanence CBr = 1. 4T).
Original language | English |
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Pages (from-to) | 3274-3276 |
Number of pages | 3 |
Journal | IEEE Transactions on Magnetics |
Volume | 35 |
Issue number | 5 PART 2 |
DOIs | |
Publication status | Published - 1999 |
Keywords
- Anisotropic powder
- HDDR
- High coercivity
- Nd-fe-b
ASJC Scopus subject areas
- Electronic, Optical and Magnetic Materials
- Electrical and Electronic Engineering