一、前言随着国防工业和尖端技术的迅速发展,对永磁材料在数量上、性能上都提出了更高的要求。稀土钴合金是最近几年才发展起来的高性能永磁材料,由于能达到相当高的矫顽力和磁能积,比重小,对于缩小产品体积,减轻重量有很大意义。我国有丰富的稀土资 I. Introduction With the rapid development of national defense industry and cutting-edge technologies, higher requirements are put forward on the quantity and performance of permanent magnetic materials. Rare-earth cobalt alloy is a high-performance permanent magnet material developed in recent years. Due to its high coercivity and magnetic energy product, small specific gravity, it is of great significance to reduce product volume and reduce weight. Our country is rich in rare earth resources