MECHANICAL ALLOYING OF NITROGEN INTO IRON POWDERS

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 conce ntration of nitrogen in the iron powder far in excess of the bcc-Fe la ttice low nitrogen solubility, however most of the infused nitrogen re sides on the nano-size grain boundaries and in nano-size bct-fe that f orms during mechanical alloying.