Mechanical Alloying of Nitrogen into Iron Powders

Abstract

Mechanical alloying of nitrogen into bcc-Fe powder is a very effective and efficient means of obtaining very high concentration of nitrogen in micron-size iron particles. Mechanical alloying increases the concentration of nitrogen in the iron powder far in excess of the bcc-Fe lattice low nitrogen solubility, however most of the infused nitrogen resides on the nano-size grain boundaries and in nano-size bct-Fe that forms during mechanical alloying.