Abstract
The magnetic and structural properties of FINEMET [Fe73.5Si13.5B9Nb3Cu1 wt %] amorphous powder were investigated after nitrification and mechanical milling. Fe-based amorphous powder was nitrified and crystallized simultaneously at 550oC by using ammonia(NH3) gas. Nitrified powder exhibits iron nitride phases such as Y'-Fe4N, Fe3N and alpha’’-Fe16N2. Nitrified particles were more brittle than raw particles. As a result, nanometer sized nitride powder was fabricated by a high energetic ball milling method. The saturation magnetization (Ms) and coercivity (He) of nitrified powder were increased due to nitride phases.
