Magnetic and anticorrosion properties of two-powder (Pr, Nd)12.6Fe81.3B6.1-type sintered magnets with additions of (Pr, Nd)32.5Fe62.0CU5.5

被引：10
作者：
Ni, Junjie [1 ,2 ]
Yan, Mi [2 ]
Ma, Tianyu [2 ]
Zhang, Wenwang [3 ]
机构：
[1] Liaocheng Univ, Sch Mat Sci & Engn, Inst Nonferrous Met, Liaocheng 252059, Peoples R China
[2] Zhejiang Univ, Dept Mat Sci & Engn, State Key Lab Silicon Mat, Hangzhou 310027, Zhejiang, Peoples R China
[3] Shandong Shangda Rare Earth Mat Co Ltd, Guanxian 252400, Peoples R China
来源：
MATERIALS CHEMISTRY AND PHYSICS | 2015年 / 151卷
基金：
中国博士后科学基金;
关键词：
Magnetic materials; Magnetic properties; Corrosion; Microstructure; CORROSION-RESISTANCE; MICROSTRUCTURE; BEHAVIOR; NDFEB; HEAT; NB; CO;
D O I：
10.1016/j.matchemphys.2014.11.046
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
Aiming to improve the corrosion resistance without sacrificing magnetic properties, two-powder magnets were fabricated by additions of (Pr, Nd)(32.5)Fe62.0Cu5.5 aid alloys to (Pr, Nd)(12.6)Fe81.3B6.1 master alloys. It was found that these two-powder magnets have similarly comprehensive magnetic properties and even the magnet with 12 wt% additives possesses better magnetic/anticorrosion properties than contrastive one-powder magnets of (Pr, Nd)(14.5)Fe79.5B6.0 and (Pr, Nd)(14.5)Fe79.5Cu0.5B5.5. Higher corrosion resistance of the two-powder magnets are related to the replacement of (Pr, Nd)-rich intergranular phase by (Pr, Nd)(6)Fe13Cu. It is due to the higher corrosion stability of (Pr, Nd)(6)Fe13Cu, which inhibits the formation of active reaction channels, thus decreasing the corrosion current density and improving the corrosion resistance. (C) 2014 Elsevier B.V. All rights reserved.
引用
收藏
页码：126 / 132
页数：7
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