制备工艺对Pr_2Fe_(14)B/α-Fe纳米复合永磁材料组织与磁性的影响  

Effect of Experimental Parameters on Microstructure and Magnetic Properties of Nanocomposite Pr_2Fe_(14)B/α-Fe Permanent Alloys

作　　者：包小倩[1] 周寿增[1] 王佐诚[1] 乔祎[1] 张茂才[1] 刘湘华[1] 

机构地区：[1]北京科技大学新金属材料国家重点实验室,北京100083

出　　处：《中国稀土学报》2003年第1期27-30,共4页Journal of the Chinese Society of Rare Earths

基　　金：国家自然科学基金资助项目(10074005)

摘　　要：用XRD,TEM和VSM等方法研究了快淬法制备的Pr2Fe14B/α Fe纳米复合永磁薄带的显微结构与磁性。比较了直接快淬和非晶晶化两种制备工艺对合金薄带显微结构和磁性能的影响。通过对Pr8Dy1Fe74.5Co10Nb0.5B6合金薄带高压退火,获得了Br=1.11T,Hci=816.0kA·m-1和(BH)max=188.8kJ·m-3的高性能。Microstructure and magnetic properties of nanocomposite Pr2Fe14B/αFe ribbons prepared by meltspinning were studied by the methods of XRD,TEM, Mssbauer and VSM. Effects of spinning and annealing parameters and compositions on microstructure and magnetic properties of the ribbons were systematically investigated. Br=1.11 T, Hci=816.0 kA·m-1 and (BH)max=188.8 kJ·m-3 are achieved in the ribbons with Pr8Dy1Fe74.5Co10Nb0.5B6 annealed under high pressure.

关 键 词：金属材料 纳米复合永磁 熔体快淬 高压退火 稀土 

分 类 号：TG132.2[一般工业技术—材料科学与工程] TM274[金属学及工艺—合金]