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Meeting 2018 TMS Annual Meeting & Exhibition
Symposium Powder Metallurgy of Light, Reactive and Other Non-ferrous Metals
Presentation Title Optimization of Manufacturing Process for the High Magnetic Properties of Nd-Fe-B Bonded Magnets Using High-energy Compaction Method
Author(s) Dong-won Shin, Dong-soo Kim, Jar-myung Koo, Soon-jik Hong
On-Site Speaker (Planned) Dong-won Shin
Abstract Scope In this study, high-energy compaction method is used to improve the density as well as the magnetic properties of a shaped/compacted body by optimization of binder content and the compaction pressure. Gas-atomized Nd-Fe-B magnetic powders were applied to high-energy compaction with various binder contents and at different compaction pressures. The influence of binder content and applied pressure on the density and magnetic properties of the Nd-Fe-B bonded magnet was systematically investigated. The relative density increased with increasing pressure and the highest density of 6.9 g/cm3 was achieved at a pressure of 3 GPa. The optimized binder content and pressure were found to be 1 wt.% and 3 GPa, respectively. The remanence and maximum energy product of the Nd-Fe-B magnets gradually increased with increasing density. The top of remanence of 6.635 kG and the maximum energy product of 8.5 MGOe were achieved as a result of the significant increase in density.
Proceedings Inclusion? Planned: Supplemental Proceedings volume

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