Study on Two-phase Nanocrystalline Nd_(8.5)Fe_(74)Co_5Cu_1Nb_1Zr_3Cr_1B_(6.5) Permanent Magnet

摘要

Nd_(8.5)Fe_(74)Co_5Cu_1Nb_1Zr_3Cr_1B_(6.5) bonded magnets were prepared by melt-spun and subsequent heat treatment. Magnetic properties of B_r=0.68 T, JHc=716 kA/m, (BH)(max)=77 kJ/m~3 were achieved. The addition of Cr element shows to be significantly advantageous in reducing grain size and increasing the intrinsic coercivity.