Title :
Property enhancement for hot deformed Fe-Nd-B magnets by modification of composition of the Nd-rich phase
Author :
Leonowicz, M. ; Davies, H.A. ; Al-Khafaji, M.A. ; Keates, T.A. ; Crabbe, M.W.
Author_Institution :
Dept. of Eng. Mater., Sheffield Univ., UK
fDate :
3/1/1994 12:00:00 AM
Abstract :
The magnetic properties of hot pressed and die-upset forged Fe-Nd-B magnets were modified by addition of Cu or Zn. The additional elements caused a substantial increase of coercivity without remarkable changes of remanence and maximum energy product. A small reduction of the mean grain size and improvement of the temperature characteristics for the copper containing samples was observed. A high Cu content within the Nd-rich phase, resulting in a change of the physical properties of this phase, was demonstrated and discussed
Keywords :
boron alloys; coercive force; grain size; iron alloys; neodymium alloys; permanent magnets; powder metallurgy; remanence; Cu content; Fe-Nd-B; Nd-rich phase; coercivity; die-upset forged magnets; grain size; hot deformed Fe-Nd-B magnets; remanence; Coercive force; Copper alloys; Magnetic properties; Magnets; Microstructure; Powders; Remanence; Scanning electron microscopy; Temperature; Zinc;
Journal_Title :
Magnetics, IEEE Transactions on
