Method for manufacturing permanent magnet
AssigneeKorea University Research and Business Foundation
InventorsSeong-Rae Lee, Tae-Hoon Kim, Tae-Suk Jang
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Abstract
Provided is a method for manufacturing an Nd—Fe—B-based permanent magnet having an improved coercive force while reducing the amount of Dy used. A method for manufacturing a permanent magnet according to an embodiment of the present invention may comprise the steps of: preparing powder including Nd, Fe, B, and Cu; preparing a shaped body by forming a specific magnetic field in the powder; sintering the shaped body at a specific sintering temperature; and subjecting the sintered, shaped body to annealing at a annealing temperature determined according to the content of Cu.
Claims5
A method for manufacturing a permanent magnet, which comprises:
- preparing powder including Nd, Fe, B and Cu;
- preparing a shaped body by forming a specific magnetic field in the powder;
- sintering the shaped body at a specific sintering temperature;
- and subjecting the sintered, shaped body to annealing at an annealing temperature determined according to the Cu content.
Dependencies are inferred from the claim text.