Influence of low-temperature nitridation on low-frequency magnetization of Fe82Nb7B10Cu1 nanocrystalline alloy ribbons
(1.上海市宝山钢铁股份有限公司特钢事业部2.School of Basic Medical Science, Nanjing Medical University, Nanjing 210029, China3.Department of Physics, Fujian Normal University, Fuzhou 350007, China4.中南大学材料系，长沙4100835.Department of Materials Science and Engineering, Nanjing University of Science and Technology, Nanjing 210094, China6.National Laboratory of Solid State Microstructure, Nanjing University, Nanjing 210093, China)
Abstract: The nanocrystalline Fe82Nb7B10Cu1 soft magnetic ribbons were treated with the mixture gas flow of ammonia and hydrogen at 673 K. The influence of the nitridation treatment was studied by the low-frequency permeability spectra. The result shows that this kind of nitridation treatment can improve the soft magnetic properties under some application conditions. The reason for the improvement of the soft magnetic properties by slight nitridation was discussed on the basis of domain wall bulging model. Therefore for the Fe-based nanocrystalline soft magnetic alloy ribbons, the nitridation treatment can be used as an effective and easy method to control the magnetic properties.
Key words: Fe82Nb7B10Cu1 alloy; nitridation; magnetization; permeability; soft magnetic materials