Effect of Ball-Milling Time on Nanostructured Fe-33at.%Si Alloy Powders

Abstract

The structural and magnetic properties of nanostructred Fe-33at.%Si alloy powders were investigated. Commercial Fe-33at.%Si alloy powders (Hoeganaes Co., USA) with 99.9% purities were used to fabricate the nanostructure Fe-Si alloy powders through a high-energy ball milling process. The alloy powders were fabricated at 400 rpm for 50 h, resulting in an average grain size of 16nm. The nanostructure powder was characterized by fcc-Fe3Si and hcp-Fe5Si3 phases and exhibited a minimum coercivity of approximately 50 Oe.