Affiliation:
1. Hebei University of Engineering
2. China University of Mining and Technology (Beijing)
Abstract
Influence of nanoflakes and melt-spun ribbons on the nitrogenation temperature f Sm2Fe17 was investigated. The microstructure, phase structure, properties of the specimens before and after nitrogenation have been discussed. It is interesting found that hard magnetic Sm2Fe17N3 flakes have been synthesized by surfactant-assisted high energy ball milling and nitriding Sm2Fe17 in 3 psi of N2 gas at lower temperature 300 °C and 350 °C for 3 h. The synthesized Sm2Fe17N3 flakes still retained nanostructure and obtained a coercivity of 3.56 kOe. For the melt-spun ribbons, it needs a higher nitrogenation temperature and longer time to obtain the same coercivity values as the nanoflakes.
Publisher
Trans Tech Publications, Ltd.