After adding element Al, Nd 2Fe 15 Al 2 phases segregate near to the grain boundary of the magnetic Nd 2Fe 14 B phase, which leads to the improvement of coercivity of magnets.

• 对于晶间添加Al元素的磁体 ,Al溶入晶间形成Nd2 Fe15Al2 相弥散地分布在晶界上 ,这有益于磁体矫顽力的提高 ;