Surface modification of （Tb,Dy）Fe_2 alloy by nitrogen ion implantation

Effects of nitriding modification on surface phase structure, morphology, corrosion resistance and magnetostriction of （Tb,Dy）Fe2 alloy were investigated by nitrogen ion implantation. Results showed that the surface REFe2 phase gradually decomposed and transformed into REN, α-Fe and Fe8N phases with...

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Published in中国稀土学报：英文版 Vol. 29; no. 9; pp. 878 - 882
Main Author 王海波 张世荣 于敦波 李扩社 罗阳
Format Journal Article
LanguageEnglish
Published 2011
Subjects
合金
抗腐蚀特性
氮离子注入
磁致伸缩性能
离子注入剂量
表面形态
表面改性
铽
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Summary:Effects of nitriding modification on surface phase structure, morphology, corrosion resistance and magnetostriction of （Tb,Dy）Fe2 alloy were investigated by nitrogen ion implantation. Results showed that the surface REFe2 phase gradually decomposed and transformed into REN, α-Fe and Fe8N phases with the increase of nitrogen ion implantation dose. The surface morphology of the alloy had an obvious change after nitrogen ion implantation. The corrosion resistance properties of the alloy in acidic, alkaline and chloridion environment were also greatly improved. In addition, the magnetostriction performance of the alloy was almost not affected by ion implantation as the nitrided layer was quite thin and the operating temperature was very low. The results proved that nitrogen ion implantation was an effective method for surface modification of （Tb,Dy）Fe2 alloy.
Bibliography:WANG Haibo, ZHANG Shirong, YU Dunbo, LI Kuoshe, LUO Yang （National Engineering Research Center Jot Rare Earth Materials, General Research Institute for Nonferrous Metals, and Grirem Advanced Materials Co., Ltd., Beijing 100088, China）
11-2788/TF
magnetostriction TbDyFe nitriding ion implantation surface modification rare earths
Effects of nitriding modification on surface phase structure, morphology, corrosion resistance and magnetostriction of （Tb,Dy）Fe2 alloy were investigated by nitrogen ion implantation. Results showed that the surface REFe2 phase gradually decomposed and transformed into REN, α-Fe and Fe8N phases with the increase of nitrogen ion implantation dose. The surface morphology of the alloy had an obvious change after nitrogen ion implantation. The corrosion resistance properties of the alloy in acidic, alkaline and chloridion environment were also greatly improved. In addition, the magnetostriction performance of the alloy was almost not affected by ion implantation as the nitrided layer was quite thin and the operating temperature was very low. The results proved that nitrogen ion implantation was an effective method for surface modification of （Tb,Dy）Fe2 alloy.
ISSN:1002-0721
2509-4963