Corrosion resistance and magnetostrictive properties of(Tb0.3Dy0.7)Fe2 alloy modified by nitrogen ion implantation
来源期刊：Journal of Rare Earths2015年第6期
论文作者：杨红川 张世荣 于敦波 李扩社 胡权霞 杨远飞 张坤 李红卫
文章页码：629 - 632
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.
杨红川，张世荣，于敦波，李扩社，胡权霞，杨远飞，张坤，李红卫
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.
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