Structure and properties of Tb0.3Dy0.7Fe2 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
• 来源期刊: 稀有金属（英文版）
• 年，卷（期）: 2021,（5）
• 所属期刊栏目: ORIGINAL ARTICLES
• 页码范围: 1198-1202
• 页数: 5页
• 语种: 英文

摘要

The surface of Tb0.3Dy0.7Fe2 alloys was mod-ified 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 mag-netostrictions are assessed for the samples placed in the air for one year,which further confirms that the ion implan-tation process is more helpful to maintain the magnetostrictions.