序言永磁材料做为一种磁源,主要应用于无线电通讯、测量仪表及各种电机中。在宇航工业中,它是控制、遥测、计量系统和静力试验中大量使用的材料。目前广泛应用的永磁材料主要是AlNiCo系永磁合金。但此类合金既硬又脆,除磨削外不能进行其它机械加工,同时,在热处理和加工过程中常发生崩裂。这样不仅大大降低了生产效率,而且往往由于零件大量 Preamble Permanent magnetic materials as a magnetic source, mainly used in radio communications, measuring instruments and a variety of motor. In the aerospace industry, it is a widely used material in control, telemetry, metrology systems and static tests. Currently widely used permanent magnet materials are mainly AlNiCo permanent magnet alloys. However, these alloys are hard and brittle, except for grinding can not be carried out other mechanical processing, at the same time, heat treatment and processing often crack. This not only greatly reduces the production efficiency, and often due to a large number of parts