固溶处理对Sm_(2)Co_(17)磁体微结构及磁性能的影响  

Effect of Solution Parameters on Microstructure and Magnetic Properties of Sm_2Co_(17) Magnet

作　　者：贾淑琳 史慧刚 向俊尤 Jia Shulin;Shi Huigang;Xiang Junyou(School of Physics Science and Technology,Lanzhou University,Gansu Lanzhou 730000,China;Division of the Permanent magnet materials,Hangzhou Kede Magnetic Components Co.,Ltd,Hangzhou 310000,China)

机构地区：[1]兰州大学物理科学与技术学院,甘肃兰州730000 [2]杭州科德磁业有限公司永磁材料事业部,浙江杭州310000

出　　处：《中国稀土学报》2025年第1期87-95,共9页Journal of the Chinese Society of Rare Earths

摘　　要：采用粉末冶金法制备不同固溶温度与固溶时间的Sm_(2)Co_(17)磁体样品,研究了固溶温度与时间对磁体的微观组织结构及宏观磁性能的影响。结果表明:不同固溶处理温度与时间条件下,2:17H相与1:7H相相互转化。固溶温度升高,固溶时间延长,磁体晶粒尺寸均呈逐渐长大趋势。相同固溶温度下,经9 h固溶处理磁体磁畴的宽度均比6 h固溶处理磁体的小,且均匀性明显改善。固溶处理9 h后磁体样品的磁性能为:(BH)_(max)=32.11 MGOe, H_(cj)=26.56 kOe, B_(r)=11.45 kGs, S_(q)=73.1%。Sm_(2)Co_(17) magnet samples with different solution temperature and solution time were prepared by powder metallurgy method. The effects of solution temperature and solution time on the microstructure and macroscopic magnetic properties of magnet were studied. The results show that the 2∶17H phase and 1∶7H phase are mutually transformed under different solution temperature and time. With the solution temperature increases and the solution time prolongates, the grain size of the magnet increases gradually. At the same solution temperature, the width of the magnetic domains treated with 9 h solution is smaller than that of the magnets treated with 6 h solution, and the uniformity of the domains is obviously improved. The magnetic energy of the magnet sample after 9 h solution treatment is(BH)_(max)=32.11 MGOe, H_(cj)=26.56 kOe, B_(r)=11.45 kGs, S_(q)=73.1 %.

关 键 词：Sm_(2)Co_(17)永磁体 固溶温度 固溶时间 微观结构 磁性能 

分 类 号：TM273[一般工业技术—材料科学与工程]