Mechanical synthesis and rapid consolidation of a nanocrystalline 3.3Fe0.6Cr0.3Al0.1-Al2O3 composite by high frequency induction heating

Nanopowders of 3.3Fe0.6Cr0.3Al0.1 and Al2O3 were synthesized from Fe2O3, Cr, and Al powders by high-energy ball milling. A high density nanocrystalline 3.3Fe0.6Cr0.3Al0.1-Al2O3 composite was consolidated by a high frequency induction heated sintering (HFIHS) method within 3 min from mechanically synthesized powders of Al2O3 and 3.3Fe0.6Cr0.3Al0.1. The average grain sizes of Al2O3 and 3.3Fe0.6Cr0.3Al0.1 were 84 and 32 nm, respectively.