Hard magnetic properties of melt-spun nanocomposite Y_(16)Fe_(78)B_(6)ribbons  

作　　者：Liang Sun Kuo-She Li Hong-Wei Li Dun-Bo Yu Yang Luo Jin-Ling Jin Shuo Lu Ning-Tao Quan 

机构地区：[1]GRIREM Advanced Materials Ltd,General Research Institute for Nonferrous Metals,Beijing,100088,China

出　　处：《Rare Metals》2023年第2期602-605,共4页稀有金属（英文版）

基　　金：financially supported by the National Natural Science Foundation of China(No.51401028);the Science and Technology Project of Xicheng District,Beijing(No.XCKJJH2013-33)。

摘　　要：Melt-spun Y_(16)Fe_(78)B_(6)ribbons were prepared by the melt-spinning technique with pure elements Y,Fe and Fe-B alloy n argon.The ribbons are mainly composed of Y_(2)Fe_(14)B,YFe_(2)andα-Fe phases.Amorphous phase appears at the wheel velocity of>35 m·s^(-1).For the ribbons prepared at optimum wheel velocity and heat treatments,the coercivity,remanence and maximum energy product are239.5 kA·m^(-1),0.61 T and 32.7 kJ·m-3,respectively.By an investigation of Henkel plots of ribbons,it is found that intergrain exchange coupling leads to the enhancement of remanence.The coercivity mechanism of ribbons prepared at 35 m·s^(-1)is mainly controlled by inhomogeneous pinning of domain walls.The phase component and magnetic properties change with annealing temperature and time.The optimum magnetic properties are obtained with the ribbon quenched at 35 m·s^(-1)and annealed at 700℃for10 min.

关 键 词：Melt spinning Permanent magnets Y-Fe-B alloys Magnetic hardening 

分 类 号：TB33[一般工业技术—材料科学与工程]