Corrosion resistance and magnetostrictive properties of(Tb_(0.3)Dy_(0.7))Fe_2 alloy modified by nitrogen ion implantation  

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 

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

出　　处：《Journal of Rare Earths》2015年第6期629-632,共4页稀土学报（英文版）

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)

摘　　要：The corrosion resistance and magnetostriction of （Tb0.3Dy0.7）Fe2 alloy were investigated for different nitrogen doses of 5Х 1015, 5Х 1016, 5Х 1017, 1 Х 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% NaC1 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 5x1017 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 ni- trogen ion implantation on the magnetostrictive properties turned out to be small. Finally, a model was applied to interpret the influ- ence of nitrogen implantation on the magnetostriction in the light of the information provided by the experimental results in this study.The corrosion resistance and magnetostriction of （Tb0.3Dy0.7）Fe2 alloy were investigated for different nitrogen doses of 5Х 1015, 5Х 1016, 5Х 1017, 1 Х 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% NaC1 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 5x1017 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 ni- trogen ion implantation on the magnetostrictive properties turned out to be small. Finally, a model was applied to interpret the influ- ence of nitrogen implantation on the magnetostriction in the light of the information provided by the experimental results in this study.

关 键 词：MAGNETOSTRICTION ion implantation corrosion concentration distribution rare earths 1 

分 类 号：TG174.4[金属学及工艺—金属表面处理]