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Corrosion resistance and magnetostrictive properties of(Tb0.3Dy0.7)Fe2 alloy modified by nitrogen ion implantation

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【作者】 杨红川张世荣于敦波李扩社胡权霞杨远飞张坤李红卫

【Author】 YANG Hongchuan;ZHANG Shirong;YU Dunbo;LI Kuoshe;HU Quanxia;YANG Yuanfei;ZHANG Kun;LI Hongwei;National Engineering Research Center for Rare Earth Materials, General Research Institute for Nonferrous Metals,and Grirem Advanced Materials Co., Ltd.;

【机构】 National Engineering Research Center for Rare Earth Materials, General Research Institute for Nonferrous Metals,and Grirem Advanced Materials Co., Ltd.

【摘要】 The corrosion resistance and magnetostriction of(Tb0.3Dy0.7)Fe2 alloy were investigated for different nitrogen doses of 5×1015, 5×1016, 5×1017, 1×1018 ions/cm2 and average ion energy of 140 kV. The phase and elements concentration in the implanted layer were examined by X-ray diffraction and auger electron spectroscopy, respectively. The aqueous corrosion studies were carried out in 3.5% NaCl solutions. It was found that corrosion resistance had improved substantially with respect to the untreated substrates. The corrosion resistance was maximum at a dose of 5×1017 ions/cm2, and saturation in corrosion improvement was noticed at a higher dose, 10×1017 ions/cm2. In contrast, the results of magnetostriction tests before and after ion implantation showed that the influence of nitrogen ion implantation on the magnetostrictive properties turned out to be small. Finally, a model was applied to interpret the influence of nitrogen implantation on the magnetostriction in the light of the information provided by the experimental results in this study.

【Abstract】 The corrosion resistance and magnetostriction of(Tb0.3Dy0.7)Fe2 alloy were investigated for different nitrogen doses of 5×1015, 5×1016, 5×1017, 1×1018 ions/cm2 and average ion energy of 140 kV. The phase and elements concentration in the implanted layer were examined by X-ray diffraction and auger electron spectroscopy, respectively. The aqueous corrosion studies were carried out in 3.5% NaCl solutions. It was found that corrosion resistance had improved substantially with respect to the untreated substrates. The corrosion resistance was maximum at a dose of 5×1017 ions/cm2, and saturation in corrosion improvement was noticed at a higher dose, 10×1017 ions/cm2. In contrast, the results of magnetostriction tests before and after ion implantation showed that the influence of nitrogen ion implantation on the magnetostrictive properties turned out to be small. Finally, a model was applied to interpret the influence of nitrogen implantation on the magnetostriction in the light of the information provided by the experimental results in this study.

【基金】 supported by the National High Technology Research and Development Program of China(863 program,2011AA03A404);the National Natural Science Foundation of China(50801006)
  • 【文献出处】 Journal of Rare Earths ,稀土学报(英文版) , 编辑部邮箱 ,2015年06期
  • 【分类号】TG174.4
  • 【被引频次】5
  • 【下载频次】28
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