Sintered Nd-Fe-B Magnets with Improved Fracture Toughness

New sintered Nd-Fe-B magnets with improved fracture toughness have been successfully developed at UDRI.  The improvement is as high as 75% as compared with conventional sintered Nd-Fe-B magnets.  At such a high level of fracture toughness, some new sintered Nd-Fe-B magnets can be even cut or drilled by a lathe.

This work was conducted in UDRI’s Magnetic Materials  group. To learn more, please contact Dr. Sam Liu.

Sintered magnet specimens cut and drilled by a lathe.

A comparison of fracture toughness of commercial sintered Nd-Fe-B magnets and newly developed Nd-Fe-B magnets with improved fracture toughness.