Effect of Intergranular Addition of Cu85Sn15 on Magnetic and Anti-corrosion Properties of NdFeB Magnets

被引：0
|
作者：
Ni Junjie [1 ,2 ]
Wang Yongkang [2 ]
Jia Zhengfeng [2 ]
Wang Changzheng [2 ]
Huang Baoxu [2 ]
Yin Yibin [2 ]
Zhou Shutai [3 ]
机构：
[1] Shandong Univ, Jinan 250061, Peoples R China
[2] Liaocheng Univ, Liaocheng 252059, Peoples R China
[3] Shandong Shangda Rare Earth Mat Co Ltd, Guanxian 252400, Peoples R China
来源：
RARE METAL MATERIALS AND ENGINEERING | 2016年 / 45卷 / 08期
关键词：
NdFeB; magnetic properties; corrosion; microstructure; B SINTERED MAGNETS; CORROSION;
D O I：
暂无
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
Effects of Cu85Sn15 intergranular additions on the magnetic and anti-corrosion properties of (Pr,Nd)(12.6)Dy0.9FebalB5.9 were investigated. Results show that when 0.16 wt% Cu85Sn15 is added, the NdFeB magnet possesses the maximum magnetic properties and anti-corrosion resistance. The higher magnetic properties mainly stem from the densification of the materials and the optimized distribution of intergranular phase. Also the aforementioned optimization of structure factors benefits the anti-corrosion performance of NdFeB. Additionally, in the Cu85Sn15 doped magnet the occurrence of (Pr,Nd)(6)Fe13Cu and the decrease in the amount of (Pr, Nd)-rich phase reduce the active reaction channels in the anodic intergranular regions, thus increasing the charge transfer resistance. As a result, the corrosion current density decreases and the corrosion resistance is enhanced.
引用
收藏
页码：2111 / 2115
页数：5
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