Effect of boron addition on the magnetic properties of the Fe-Nd-Al alloys prepared by suction casting

摘要

The microstructure and magnetic properties of the Fe-Nd-Al alloys prepared by suction casting with boron addition have been investigated. The increasing boron content in the Fe-Nd-Al alloys significantly increases the intrinsic coercivity (_iH_c) and decreases the proportion of the amorphous phase. The magnetization at the maximum applied field (σ′_s) of the Fe-Nd-Al-B alloys decreases, while the coercivity increases markedly after annealing. The high intrinsic coercivity is due to the presence of the Nd_2Fe_(14)B phase.