Development of Nd-Fe-B Anisotropic Bonded Magnet With 27 MGOe

N. Hamada, C. Mishima, H. Mitarai, Y. Honkura

研究成果: Article査読

40 被引用数 (Scopus)


The maximum energy product of bonded magnets is advancing every year. The highest maximum energy product of any bonded magnet achieved is 25 MGOe (200 kJ/m3) in the Nd-Fe-B system by d-HDDR treatment. There is a great demand for even higher energy bonded magnets with the desire for smaller, more efficient electric motors. Bonded magnets made from d-HDDR treated anisotropic magnet powder have low squareness due to low squareness of the powder. The authors developed a method to increase squareness of d-HDDR powder, and succeeded in developing the world's highest energy bonded magnet with 26.6 MGOe (213 kJ/m3). This was achieved through Dy-diffusion treatment followed by d-HDDR treatment, as well as an increase in the density of the bonded magnet. This magnet has little aging loss after being held at 393 K for 878 h.

ジャーナルIEEE Transactions on Magnetics
5 II
出版ステータスPublished - 2003 9月

ASJC Scopus subject areas

  • 電子材料、光学材料、および磁性材料
  • 電子工学および電気工学


「Development of Nd-Fe-B Anisotropic Bonded Magnet With 27 MGOe」の研究トピックを掘り下げます。これらがまとまってユニークなフィンガープリントを構成します。