Structure and properties of Tb_(0.3)Dy_(0.7)Fe_(2) alloys modified by surface nitriding  

作　　者：Hong-Chuan Yang Shi-Rong Zhang Dun-Bo Yu Kuo-She Li Yuan-Fei Yang Quan-Xia Hu Yang Luo Hong-Wei Li 

机构地区：[1]National Engineering Research Center for Rare Earth Materials,General Research Institute for Nonferrous Metals,Beijing 100088,China [2]Grirem Advanced Materials Co.,Ltd.,Beijing 100088,China

出　　处：《Rare Metals》2021年第5期1198-1202,共5页稀有金属（英文版）

基　　金：financially supported by the National High Technology Research and Development Program of China(No.2011AA03A404);the National Natural Science Foundation of China(No.50801006)。

摘　　要：The surface of Tb_(0.3)Dy_(0.7)Fe_(2) alloys was modified by microwave electron-cyclotron-resonance chemical vapor deposition(MW-ECR-CVD)and ion implantation technology,respectively.The microstructure and corrosion resistance of nitrided layers were investigated by means of optical microscope(OM),X-ray diffractomer(XRD),auger electron spectroscopy(AES),and electrochemical workstation.After modified by MW-ECR-CVD,the nitrogen concentration of the nitrided layers decreases gradually with the depth increasing,while the nitrogen concentration modified by ion implantation process exhibits Gaussian distribution.The self-corrosion electric potential of the sample modified by ion implantation is higher than that modified by MW-ECR-CVD,which reveals that the samples modified by ion implantation process have a better resistance to corrosion.The magnetostrictions are assessed for the samples placed in the air for one year,which further confirms that the ion implantation process is more helpful to maintain the magnetostrictions.

关 键 词：MAGNETOSTRICTION NITRIDING Corrosion resistance Ion implantation Microwave electron-cyclotron-resonance chemical vapor deposition 

分 类 号：TG132[一般工业技术—材料科学与工程]