TRIBOCHEMICAL EQUILIBRIUM IN MECHANICAL ALLOYING OF METALS

The structure of the product in mechanical alloying depends both on the elemental composition and the milling conditions. An increase of ball energy led to more pronounced crystallinity of the product. Mechanical alloying at small ball energy leads to the formation of amorphous alloys for Zr-Co and Cu-Ti systems. Demixing of Ti3Cu4 into crystalline TiCu and TiCu4 and demixing of Zr50Co50 into Zr3Co and ZrCo2 was found. The results are explained on the basis of the concept of tribochemical equilibrium.