| 简介 |
A magnet manufacturing method has a step of preparing mixed powder of magnetic powder 1 of a hard magnetic material, which includes one or more of an Fe-N-based compound and an R-Fe-N-based compound (R : rare earth element) and a lubricant 2 that allows formation of an adsorption film 3 on a surface of the magnetic powder, a step S3 of heating the mixed powder at a temperature T1 that is equal to or higher than a melting point T3 of the lubricant and that is lower than a decomposition temperature T2 of the magnetic powder to form the adsorption film of the lubricant on the surface of the magnetic powder, a step S4 of pressurizing and molding the magnetic powder in order to obtain a primary molding 5, and a step S5 of heating the primary molding at a temperature that is lower than the decomposition temperature of the magnetic powder. |
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