Influence of the Electrolytic Dy-Cu alloy on the Coercivity of Sintered Nd-Fe-B Magnet

被引：0
|
作者：
Liao, Chun-fa [1 ,2 ]
Zhou, Xun [1 ,2 ]
Jiang, Peng [1 ,2 ]
Zeng, Zhiyong [1 ,2 ]
Que, Lianghua [1 ,2 ]
机构：
[1] Jiangxi Univ Sci & Technol, Fac Mat Met & Chem, Ganzhou 341000, Peoples R China
[2] Jiangxi Univ Sci & Technol, Natl Innovat Ctr Rare Earth Funct Mat, Ganzhou 341000, Peoples R China
来源：
JOURNAL OF MAGNETICS | 2022年 / 27卷 / 04期
基金：
中国国家自然科学基金;
关键词：
sintered Nd-Fe-B magnets; molten salt electrolysis; grain boundary diffusion; heat treatment time; coercivity; GRAIN-BOUNDARY DIFFUSION; ENHANCEMENT; MICROSTRUCTURE;
D O I：
10.4283/JMAG.2022.27.4.366
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
The fluorine salt oxide molten-salt electrolytic Dy-Cu alloy was used as a grain boundary diffusion source instead of the doped Dy-Cu alloy. The microstructure and coercivity of the GBDPed magnets with the different diffusion times were studied. The results show that the coercivity increased with the increase in the GBDP time. The ability of the electrolytic Dy-Cu alloy to improve the coercivity of Nd-Fe-B is more advantageous than that of the doped Dy-Cu alloy. Microstructure analysis shows that the segregation and metal inclusion, a small amount of Dy2O3, and the poor synergy diffusion between Dy and Cu lead to the unsatisfactory performance of the doped Dy-Cu alloy to improve the coercivity. The diffusion rate and depth of the GBD source improved by replacing the doped alloy with an electrolytic alloy.
引用
收藏
页码：366 / 372
页数：7
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