Abstract
The effects of variations in the hydrogenation-disproportionation-desorption-recombination (HDDR) processing parameters on the size of Nd-Fe-B ultrafine powders were investigated. The ultrafi ne powders were fabricated by hydrogen decrepitation and jet milling of the HDDR alloys. Before pulverization, the crystal grain size of the HDDR alloys obtained by changing the HD processing temperature (THD) varied from 0.27 to 0.55 μ m, and decreased as THD was lowered. The ultrafine powder of the HDDR alloy became finer as THD decreased, with sizes in the range of 0.33 to 0.58 μ m.
Original language | English |
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Pages (from-to) | 129-134 |
Number of pages | 6 |
Journal | Materials Transactions |
Volume | 56 |
Issue number | 1 |
DOIs | |
Publication status | Published - 2014 Jan 1 |
Keywords
- Helium jet mill
- Hydrogenation-disproportionation-desorption-recombination
- Ultra fine neodymium-iron-boron powders
ASJC Scopus subject areas
- Materials Science(all)
- Condensed Matter Physics
- Mechanics of Materials
- Mechanical Engineering