Title :
Coercivity dependency of sintered NdFeB magnets on Al content and the alloying route
Author_Institution :
Philips Components Ltd., Southport, UK
fDate :
9/1/1990 12:00:00 AM
Abstract :
A significant effect on the intrinsic coercivity (iHc) of sintered magnets was observed while comparing two methods of doping Al into NdFeB alloy at the preparation stage. Adding 0.25% Al by weight via FeB resulted in a 20% increase of i Hc over doping pure Al. It is believed that changes in the sintered microstructure are responsible for the observed effect
Keywords :
alloying additions; aluminium alloys; boron alloys; coercive force; crystal microstructure; ferromagnetic properties of substances; iron alloys; neodymium alloys; permanent magnets; Al content; NdFeBAl; alloying route; coercivity dependency; intrinsic coercivity; microstructure; preparation stage; sintered magnets; Alloying; Coercive force; Doping; Iron alloys; Magnetic analysis; Magnetic anisotropy; Magnets; Perpendicular magnetic anisotropy; Plasma measurements; Saturation magnetization;
Journal_Title :
Magnetics, IEEE Transactions on
