Characteristics of nanostructured Fe-33 at. Percent Si alloy powders produced by high-energy ball milling

摘要

The structural and magnetic properties of nanostructued Fe-33 at. Percent Si alloy powders were investigated. Commercial Fe-33 at. Percent Si alloy powders (Hoeganaes Co., USA) with 99.9 percent 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 16 nm. The nanostructure powder was characterized by fee Fe_3Si and hcp Fe_5Si_3 phases and exhibited a minimum coercivity of approximately 50 Oe.