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Enhanced thermal stability of sintered (Nd,Dy)(Fe,Co)B magnets by the addition of Ta or Ti

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6 Author(s)
Chin, T.S. ; Dept. of Mater. Sci. & Eng., Tsing Hua Univ., Hsinchu, Taiwan ; Lin, C.H. ; Huang, Y.H. ; Yau, J.M.
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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

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Magnetics, IEEE Transactions on  (Volume:29 ,  Issue: 6 )