| 简介 |
[PROBLEMS] To improve the strength of a formed article without the deterioration of magnetic characteristics. [MEANS FOR SOLVING PROBLEMS] A method for producing a sintered rare earth magnet wherein a raw fine alloy powder containing a rare earth element, a transition element and boron is sintered, wherein the raw fine alloy powder is added with an additive metal powder and then formed and sintered, the additive meal powder being one or more selected from among, for example, an Al powder, an Ni powder, a Zr powder, an Mn powder, an Fe powder, a Co powder, a Cu powder, a Zn powder, an Ag powder, an Sn powder and a Bi powder, wherein when the method has a rough pulverization step of roughly pulverizing a raw material alloy and a fine pulverization step of pulverizing finely, the additive metal powder is added after the fine pulverization step or after the rough pulverization step, in an amount of 0.01 mass % or more. The additive metal powder preferably has the shape of a plate having a thickness of 10 μm or less. |
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