Effect of Al_(82.8)Cu_(17)Fe_(0.2) alloy doping on structure and magnetic properties of SmCo5-based ribbons  

作　　者：Zhixin Dong Shu Wang Siyi Chen Yunfei Cao Zihui Ge Jibing Sun 

机构地区：[1]Key Lab.for New Type of Functional Materials in Hebei Province,Hebei University of Technology,Tianjin 300401,China

出　　处：《Journal of Rare Earths》2022年第1期93-101,共9页稀土学报（英文版）

基　　金：Project supported by the National Natural Science Foundation of China(51671078);the Natural Science Foundation of Hebei Province,China(E2019202035)。

摘　　要：This work tries to improve the magnetic properties by multi-element doping in the form of a ternary alloy.SmCo_(5+)χwt%Al-Cu-Fe(x=0-7)ribbons melt-spun at 40 m/s were produced by adding Al_(82.8)Cu_(17)Fe_(0.2)alloy into SmCo_(5) matrix,and their phases,microstructure,and magnetic properties were investigated.The results show that both x=0 and 3 ribbons form a cellular microstructure.Al-Cu-Fe addition reduces the content of the Sm_(2)(Co,M)_(7) cell wall,narrows its width,and forms the local disordered micro-regions and solute-segregation nanoclusters in the Sm(Co,M)_(5) grains.With x increasing to5,Al-Cu-Fe addition promotes the phase separation between and within grains of the SmCo_(5)-based alloy.The Al-Cu-Fe addition can simultaneously improve the coercivity and magnetization of the SmCo_(5)-based ribbons,in particular,the magnetization of the x=3 ribbons increases by 35%,while the coercivity of the x=5 ribbons increases by 3.9 times.Finally,the microstructure evolution models are built up,and the relationship between the microstructure and the magnetic properties is discussed.

关 键 词：Rare earth alloys and compounds Rapid solidification Crystal structure Phase transitions Microstructure Magnetic property 

分 类 号：TG132[一般工业技术—材料科学与工程]