| 简介 |
FIELD : metallurgy.
SUBSTANCE : alloy R-T-B containing Dy, where R is at least one of Sc, Y, La, Ce, Pr, Nd, Pm, Sm, Eu, Gd, Tb, Ho, Er, Tm, Yb and Lu, and T is transition metal containing not less, than 80 wt % Fe; B is composition containing not less, than 50 wt % B and from 0 to less, than 50 wt % at least one from C and N. Alloy has a main phase R2T14B to facilitate magnet properties, a rich R phase, wherein R is concentrated in comparison with its share in general contents of alloy and a rich Dy region formed near a rich R phase, wherein Dy is concentrated in comparison with its share in a general contents of alloy. Alloy is produced by casting on a cooled rotating roller.
EFFECT : high coercive force and good magnet characteristics of alloy.
7 cl, 25 dwg, 1 tbl, 1 ex |
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