论文摘要
Pr83Cu17（wt%） grain boundary reconstruction was applied to prepare sintered NdFeB magnets. The effects of addition amount and annealing on the bending strength were investigated. The results show that Pr83Cu17 can not only effectively enhance the bending strength, but also change the mechanical anisotropy in two directions parallel and perpendicular to c-axis. The bending strength perpendicular to c-axis reaches 404 MPa in 10 wt% addition magnet, higher than 348 MPa along parallel direction. This change is attributed to the preferred distribution of boundary phases, i.e., ductile（Nd,Pr）-Fe-Cu phase along perpendicular direction to c-axis and（Nd,Pr）-Fe phase along parallel direction. Moreover, the Cu migration during 480 ℃ annealing is found to be related to this boundary phase distribution.
论文目录
文章来源
类型: 期刊论文
作者: Minghui Tang,Xiaoqian Bao,Xuejiao Zhang,Xing Mu,Kechao Lu,Jiheng Li,Xuexu Gao
来源: Journal of Rare Earths 2019年04期
年度: 2019
分类: 工程科技Ⅰ辑
专业: 金属学及金属工艺
单位: State Key Laboratory for Advanced Metals and Materials, University of Science and Technology Beijing,School of Metallurgical and Ecological Engineering,University of Science and Technology Beijing
基金: supported by National Natural Science Foundation of China(51401021),the State Key Laboratory Advanced Metals and Materials(20162-14)
分类号: TG111
页码: 393-397
总页数: 5
文件大小: 1121K
下载量: 41
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