In this way, after the micro-grinding process and before the forming process in the magnetic field, the evaporation process is added and performed on the fine powder, so that sinterability of the powder drastically changes, thereby achieving the objective of manufacturing a high-coercivity, high-rectangularity, and high-heat-resistance magnet.
本发明公开了基于蒸镀处理的稀土磁铁用合金粉末的制造方法和稀土磁铁的制造方法,其包括如下的步骤:稀土磁铁用合金粗粉碎后再通过微粉碎制成细粉,将所述细粉和蒸发材料在真空或惰性气体气氛中蒸镀处理后获得,其中蒸镀到所述细粉上的所述蒸发材料与所述细粉的重量比为10-6 -0.05:1。 其是在微粉碎工序之后,磁场中成形工序之前,增加细粉蒸镀处理工序,以使粉末的烧结性发生剧变,达到制成高矫顽力、高方形度、高耐热性的磁铁的目的。patents-wipo patents-wipo