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Toward High Energy Product Nd-Fe-B Magnets

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1 Author(s)
Hirosawa, S. ; Sumitomo Special Metals Co., Ltd.

Developments in the field of high-energy Nd-Fe-B magnets are reviewed and discussed. The highest value of the maximum energy product (BH)max reported so far for sintered Nd-Fe-B magnets is 416 kJ/m3 (52 MGOe), while a (BH)max of 360 kJ/m3 (45 MGOe) has been realized in commercial production. The highest (BH)max value obtained by means of rapid solidification and got-pressing processes is around 380 kJ/m3 (48 MGOe). Rapidly solidified isotropic magnets with high squareness are also described.

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Magnetics in Japan, IEEE Translation Journal on  (Volume:8 ,  Issue: 10 )