Title :
Enhanced thermal stability of sintered (Nd,Dy)(Fe,Co)B magnets by the addition of Ta or Ti
Author :
Chin, T.S. ; Lin, C.H. ; Huang, Y.H. ; Yau, J.M. ; Heh, S.J. ; King, F.D.
Author_Institution :
Dept. of Mater. Sci. & Eng., Tsing Hua Univ., Hsinchu, Taiwan
fDate :
11/1/1993 12:00:00 AM
Abstract :
The addition of 2 at.% Ta or 1 at.% Ti into a (Nd,Dy)-(Fe,Co)-B alloy is very effective in improving room temperature coercivity and thermal stability. The Ta containing alloy shows 30% higher coercivity value than that of a Ta-free alloy at temperatures higher than 100°C. Both Ta and Ti alloying greatly reduce the high temperature reversible losses at temperatures of up to 225°C. They are thus potential in high temperature applications
Keywords :
alloying additions; boron alloys; cobalt alloys; coercive force; dysprosium alloys; ferromagnetic properties of substances; iron alloys; magnetic leakage; neodymium alloys; permanent magnets; tantalum alloys; titanium alloys; 100 degC; 225 degC; NdDyFeCoBTa; NdDyFeCoBTi; Ta containing alloy; high temperature applications; high temperature reversible losses; room temperature coercivity; sintered (Nd,Dy)(Fe,Co)B magnets; thermal stability; Coercive force; Heat treatment; Iron; Magnetic anisotropy; Magnetic properties; Magnets; Niobium; Temperature; Thermal stability; Titanium alloys;
Journal_Title :
Magnetics, IEEE Transactions on
