Magnetostriction and corrosion resistance of Tb_0.3Dy_0.7(Fe_1−xSi_x)_1.95 alloys

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• 作者：Lihong Xu ; Chengbao Jiang ; Chungen Zhou ; Huibin Xu
• 关键词：Magnetostriction ; Corrosion ; Si addition ; TbDyFe alloy
• 刊名：Journal of Alloys and Compounds
• 出版年：2008
• 期刊代码：45_09258388
• 类别：ms
• 出版时间：8 May 2008
• 卷：455
• 期：1-2
• 页码：203-206
• 文件大小：635 K

摘要

Magnetostriction and corrosion resistance in 3.5%NaCl solution of as-cast Tb_0.3Dy_0.7(Fe_1−xSi_x)_1.95 (x = 0, 0.025 and 0.10) alloys were studied. With little Si addition, Tb_0.3Dy_0.7(Fe_0.975Si_0.025)_1.95 alloy possesses both giant magnetostriction and improved corrosion resistance. The reason for improved corrosion resistance is suggested to be the increased natural corrosion potential E_corr for the rare earth-rich phase and the reduced electrochemical potential difference between the rare earth-rich phase and the matrix phase in TbDyFeSi alloys.