The effects of Co on the enhancement of magnetic properties by modifying the intergranular phase in Nd-Fe-B alloys.

ABSTRACT: In Nd₂Fe₁₄B-based permanent materials, the intergranular phase has a strong influence on magnetic properties. Here, we study the effect of partial substitution of Fe by Co on the microstructure to gain insight into the mechanism of enhancing magnetic properties of (Nd_0.8Pr_0.2)_2.2Fe_14-xCo_xB (x = 0, 1.75, 2, 2.25) alloys. Our results show that the substitution Co for Fe changes the magnetic properties obviously by tuning the chemistry and distribution of the intergranular phase between hard magnetic grains. In particular, for (Nd_0.8Pr_0.2)_2.2Fe₁₂Co₂B (x = 2) alloy, no obvious intergranular phase is observed. And the through-thickness homogeneity and ultrafine mic

SUBMITTER: Liang Y 

PROVIDER: S-EPMC6370840 | biostudies-literature | 2019 Feb

REPOSITORIES: biostudies-literature