HDDR法制备各向同性SmFeN永磁体的研究  

Research of Isotropic SmFeN Permanent Magnets by HDDR

作　　者：李芳[1] 刘颖[1] 杨锦[1] 李军[1] 高升吉[1] 涂铭旌[1] 

机构地区：[1]四川大学材料科学与工程学院,四川成都610065

出　　处：《稀土》2005年第2期22-25,共4页Chinese Rare Earths

摘　　要：研究了HDDR法制备各向同性Sm2Fe17Nx磁体的制备、结构与磁性能,发现SmFe铸态组织主要由Sm2Fe17、SmFe2、SmFe3和α-Fe四种相组成,而经过1050℃均匀化退火13h后形成了所需要的接近单相组织的Sm2Fe17相合金。铸锭经过粉碎球磨、HDDR、渗氮处理后,经压制成型得到各向同性的高矫顽力的Sm2Fe17Nx磁体。获得的磁体矫顽力达到了1300kA/m。The preparation,microstructure and magnetic properties of isotropic Sm_2Fe_(17)N_x magnets by HDDR are studied. It is shown that the microstructure of SmFe ingot is mainly comprised of Sm_2Fe_(17),SmFe_2,SmFe_3 and α-Fe. After homogeneous annealing at 1050℃ for 13h,the alloy ingot mainly containing Sm_2Fe_(17) phase. The isotropic Sm_2Fe_(17)N_x magnets with high coercivity will be obtained via pre-milling,HDDR,nitrogenation and compression moulding, and the coercivity of the magnets will reach 1300kA/m.

关 键 词：Sm2Fe17Nx磁体 HDDR 各向同性 矫顽力 

分 类 号：TM273[一般工业技术—材料科学与工程]