Effect of Nd₂Fe₁₄B/α-Fe nanocomposite permanent magnets with a combined Co and Nb additions

Abstract

Influence of Co+Nb on the Nd₈Fe₈₂Co₃Nb₁B₆ nanocomposite magnets was investigated by adding Co element combined with Nb element. Results show that the high temperature stability of two phases is increased. Adding Co+Nb could improve the glass forming ability of the alloy, reduce the size of grains, increase the exchange coupling ability of two phases, and obviously increase the magnetic properties of the alloy. The optimal magnetic properties are B _r=1.14 T, H _cj=320 kA/m, (BH)max-109.3 kJ/m³.

Keywords

nanocomposite permanent magnets / glass forming ability / exchange coupling ability / magnetic properties

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