Title :
Production of bulk materials of an Nd4Fe77.5B 18.5 alloy and their magnetic properties
Author_Institution :
Dept. of Metall. Eng., Chiba Inst. of Technol., Narashino, Japan
fDate :
7/1/2001 12:00:00 AM
Abstract :
Amorphous melt-spun ribbons of an Nd4Fe77.5B 18.5 alloy were consolidated into bulk materials by shock compaction. The resultant bulk materials showed a low coercivity as expected for amorphous Nd-Fe-B materials. Heat treatment of the bulk materials above the crystallization temperature resulted in the formation of metastable Fe3B phase together with Nd2 Fe14B phase. The resultant bulk magnets showed a coercivity as high as 2.7 kOe as was the case for the annealed melt-spun ribbons
Keywords :
annealing; boron alloys; coercive force; crystallisation; densification; ferromagnetic materials; iron alloys; melt spinning; neodymium alloys; permanent magnets; Fe3B metastable phase; Nd2Fe14B phase; Nd4Fe77.5B18.5; Nd4Fe77.5B18.5 alloy; amorphous melt-spun ribbon; annealing; bulk material; coercivity; crystallization; heat treatment; magnetic properties; permanent magnet; shock compaction; Amorphous magnetic materials; Amorphous materials; Coercive force; Compaction; Crystalline materials; Electric shock; Iron alloys; Magnetic materials; Neodymium; Production;
Journal_Title :
Magnetics, IEEE Transactions on
