Copper matrix composites have a vast industrial application because of their unique properties like high thermal
and electrical conductivity and good wear resistance. They can be produced by dispersing hard particles like oxides,
carbides or nitrides into the copper matrix either by liquid or solid state techniques, Tjong and Lau (2000), Ping Liu
et al. (2006), Sheibani et al. (2009). Mechanochemical processing is a novel technique for preparation of nano-sized
materials. In this method, powder particles are subjected to severe mechanical deformation during collisions with