In this work NbC was added to AISI M2 high speed steel by a suitable procedure of
mechanical alloying using two different types of attritor Mills: A horizontal Zoz Atritor and a
vertical atritor developed in our laboratory types. 6% in mass of niobium carbide (NbC) was
additioned to AISI M2 HSS in these two atritor Mills using a ball to powder ratio of 10:1. The
efficiency of the milling procedures were evaluated by SEM and EDS techniques