| 简介 |
FIELD : metallurgy.
SUBSTANCE : invention can be used for production of high-energy permanent magnets based on rare-earth-alloys (rare earth metals), and alloys, in particular, based on neodymium, iron and boron (Nd-Fe-B alloy). The method for production of high-coercive magnets from Nd-Fe-B-based alloys includes crushing the base alloy, mixing the alloy and an additive for correction of alloy composition, pressing a mixture of powders in magnetic field, sintering the blank and cooling. The additive for correction of alloy composition is hydrides of rare-earth metals-Fe, and sintering of magnet is carried out in vacuum or at residual pressure for 1-2 h.
EFFECT : invention makes it possible to increase coercive force and residual induction of produced magnets.
2 cl, 2 dwg |
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